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Watershed

Flood Control District Permits

Submittal Requirements

    The Los Angeles County Flood Control District's (LACFCD) core responsibilities are to provide flood protection and water conservation in over 3,000 square miles within the County of Los Angeles. To achieve this and effectively serve the residents of the county, the LACFCD owns, operates and maintains a number of major dams, debris basins, open channels, underground storm drains, catch basins, spreading grounds, and sea water barrier projects among other facilities, and the associated rights of way. As such, in order to protect these investments by ensuring their integrity is preserved while accommodating the needs of future development, and pursuant to Los Angeles County Code, any work, encroachment, or activity within or affecting the LACFCD right-of-way, facilities, interests or jurisdiction requires a Flood Permit. Following is information on the requirements to obtain said permit.

    It is highly recommended that project proponents seek information and guidance specific to the scope of their project/needs prior to the submittal of a permit request to avoid processing delays as only complete submittal packages will be accepted. LACFCD staff will be able to answer crucial questions and facilitate helpful guidance and information. They can be consulted by visiting the Permits Counter located on the 8th floor of 900 S. Fremont Ave., Alhambra, CA 91803, or by calling (626) 458-3129.

    Access

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to access its rights of way or facilities for activities NOT involving construction work—activities such as inspection of privately-owned utilities in District right of way; access to transport construction material to an adjoining property, or removal of green waste; access for collection of water samples; access to perform trash pick-up by non-profit groups or volunteers; access to perform scouting for possible filming in District right of way; etc. Initial submittals must include items 1 and 2 - incomplete submittals will not be accepted. Other requirements may be applied during the review as determined by specifics of your project.

    1. Application Form The Flood Permit Application must be completed and signed by the project owner or party seeking access, and include a detailed description the reason for the access needed (i.e. "Access the District’s right of way along the Los Angeles River at its intersection with Main Street, in Los Angeles, to perform survey for the City’s future bridge enhancement project—no construction involved”). Please print the complete street address and telephone number of the owner and the agent (if any), the site address, and the Thomas Guide page and grid.
    2. Permit Fee A payment for the permit must be submitted (cash or check and made payable to "LA County Department of Public Works"). The fee amount can be determined from the tabulated values in current Fee Ordinance. An issuance, plan review, and inspection fees will apply. You may also contact a permit engineer at 626 458-3129 to request the fee.
    3. Liability Insurance Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.
    Connection Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (LACFCD) to connect new storm drainage for conveyance of storm run-off into an existing LACFCD facility. Initial submittals must include items 1 thru 7 - incomplete submittals will not be accepted. Please refer to the Guidelines For Connection Permits for specific requirements such as drawing details and analysis approach that the submittal documents must include. Other requirements may be applied during the review as determined by specifics of your project.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the connection to be permitted (i.e. "construction of a 10-inch PVC connection to existing LACFCD catch basin, at mainline Sta. 45+87"). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit four sets (seven if connecting to a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the LACFCD right-of-way and facility labeled with its name and station, all necessary details, construction notes, and SPPWC Standards, and a profile view for the proposed connection identifying the party responsible for maintenance. Refer to Section V of the Guidelines For Connection Permits and the Connection Sample plan for plan requirements.

    3. Allowable “Q"

    Submit an allowable flow-rate value (allowable “Q”). It can be requested by calling 626 458-7894. Size the connection such that the allowable “Q” is transmitted by gravity with the pipe flowing full.

    4. Hydrology Report

    Submit 2 sets of a Hydrology Report signed and stamped by a civil engineer registered in California. The report must include the following: (a) allowable “Q”; (b) existing hydrology and hydraulic data for the affected facility; (c) hydrology calculations; (d) hydraulic calculations that show the proposed connection has been sized to limit the discharge to the allowable “Q”; (e) hydrology map; (f) hydrograph calculations showing excess flow; and (g) calculations that demonstrate adequate storage volume to detain excess flow. Please refer to Sections VI, VII, and VIII of the Guidelines For Connection Permits for additional requirements.

    5. As-built Drawings

    Submit three copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/). Mark the correct location for the proposed connection on the as-built plan.

    6. Right-of-Way Map

    If the proposed connection affects LACFCD right of way, submit three copies of the right-of-way map for the facility. The maps are available from Survey/Mapping and Property Management Division of the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    7. Permit Fee

    A payment for processing the request and for inspection of the connection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The fee will be determined by the Permit engineer based on the current Fee Ordinance and the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the payment amount.

    8. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    9. Water Quality Agreement

    Submit a completed and notarized Water Quality Agreement. Public agencies may be exempt.

    10. SUSMP Approval

    A copy of an approved SUSMP Plan is required. The local building department shall set the design requirements. The engineering plans must show the devices necessary to meet SUSMP requirements (i.e. catch basin filters, stormwater treatment units (CDS), bioswales, etc.)

    11. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Structural BMP (CB Retrofit) Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to install structural Best Management Practices (BMPs) devices such as Automatic Retractable Screens and Connector Pipe Screens inside its catch basins, to meet Total Maximum Daily Loads (TMDL) requirements imposed by the Regional Water Quality Control Board. Initial submittals must include items 1, 2, and 3 - incomplete submittals will not be accepted. Other requirements may be applied during the review. You may contact the Department’s Design Division at (626) 458-7894 to see if the Department has a list of pre-approved vendors for retrofit devices.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description for the number and type of inserts to be installed (i.e. "installation of 50 ARS and 45 CPS units in District existing catch basins within the City of Los Angeles to meet compliance with TMDL requirements"). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. CB List (Spreadsheet)

    Submit two hard copies and two electronic copies listing the catch basins being proposed for retrofit, by using the CB Retrofit Spreadsheet. Be sure to include ALL the information required on the spreadsheet. The catch basin identification numbers can be requested from the Department’s Design Division by calling 626 458-7894. Variables like CB width, depth, pipe size, locations, etc. must be determined by conducting field investigations. Please reference the ARS & CPS Requirements for further detail.

    3. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The processing and inspection charges will be on an “actual cost” basis, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the Permit engineer, as authorized by the current Fee Ordinance, basing the estimation on the number of retrofits. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the deposit amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    4. Shop Drawings

    Upon acceptance of the list of catch basins to be retrofitted, shop drawings for the devices to be installed will be required. They must be tailored to fit each specific catch basin.

    5. Operation and Maintenance Agreement

    An agreement for the operation and maintenance of the proposed inserts will be required prior to the issuance of a permit. The agreement can be processed working with the Department’s Watershed Management Division concurrently with permit reviews.

    6. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the City requesting the permit.

    7. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Catch Basin Relocation Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to relocate, reconstruct, replace, or modify its existing catch basins. Initial submittals must include items 1 thru 5 - incomplete submittals will not be accepted. Other requirements may be applied during the review as determined by specifics of your project.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the catch basin modifications requested (i.e. "relocation ‘in kind’ of a District catch basin 5 feet behind its existing location to accommodate new road widening”). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit four sets of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District right of way (if any), the affected catch basin and mainline labeled with its name and station, all necessary details, construction notes, applicable SPPWC Standards, variables (like “W”, “V”, “H”, pipe diameter and strength, etc.), and a profile view for the proposed work identifying the party responsible for maintenance of the new catch basin. Refer to Section V.M.4 of the Guidelines For Connection Permits for more requirements that the plans must address.

    2. Engineering Plans

    Submit four sets of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District right of way (if any), the affected catch basin and mainline labeled with its name and station, all necessary details, construction notes, applicable SPPWC Standards, variables (like “W”, “V”, “H”, pipe diameter and strength, etc.), and a profile view for the proposed work identifying the party responsible for maintenance of the new catch basin. Refer to Section V.M.4 of the Guidelines For Connection Permits for more requirements that the plans must address.

    3. As-built Drawings

    Submit two copies of the as-built plans for the affected District catch basin, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    4. Right-of-Way Map

    If the affected catch basin is located in District right of way, submit two copies of the right-of-way map. The maps are available from Survey/Mapping and Property Management Division of the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    5. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The fee will be determined by the permit engineer based on the current Fee Ordinance and the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the payment amount.

    6. Hydrology Report/Hydraulic Calculations

    If the relocation involves an increase to the flows tributary to the catch basin due to an increase in tributary area (as in curb relocations over 10 feet) and consequently the catch basin needs to be enlarged, submit 2 sets of a Hydrology Report signed and stamped by a civil engineer registered in California. The report must analyze the additional flows generated and show calculations for sizing the new catch basin. Changing the dimensions, construction Standard, local depression, or connector pipe size will require hydraulic calculations, however, relocations that are made “in kind” (using identical catch basin and local depression, etc.) do not require hydrology calculations/analysis.

    7. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    8. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Discharge Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to discharge non-storm water directly into an existing District facility. Initial submittals must include items 1 thru 5 - incomplete submittals will not be accepted. Other requirements may be applied during the review as determined by specifics of your project. However, keep in mind that the District only allows gravity discharge, during dry weather, and only if permitted by the Regional Water Quality Control Board under a National Pollutant Discharge Elimination System (NPDES) Permit or a waiver. Discharge during rainy weather or high flows may be considered if hydraulically justified.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the proposed discharge (i.e. "discharge up to 2500 gpm of treated ground water during well development into the existing catch basin for approximately 5 days"); provide the flowrate, approximate total volume, and time and duration. Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Drawing Detail

    Submit four copies of a sketch showing the piping set up to be used for the discharge. The detail must show the District’s facility labeled with its name and station for the point of discharge. Only gravity flow is accepted and it must be fed from a settling tank. The detail should also include a north arrow and a vicinity map with Thomas Guide page and grid.

    3. RWQCB Approval

    Submit two copies of a National Pollutant Discharge Elimination System (NPDES) Permit or waiver issued by the Regional Water Quality Control Board specifically for the project generating the water being discharged.

    4. As-built Drawings

    Submit three copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/). Mark the correct location for the proposed discharge point on the as-built plan.

    5. Permit Fee

    Submit the permit fee in cash or check made payable to "LA County Department of Public Works". The fee will be determined by the permit engineer based on the current Fee Ordinance and the scope of the proposal. Please visit the Permits Counter or contact an engineer at 626 458-3129to request the payment amount.

    6. Hydraulic Calculations IF proposing to discharge during periods of rainy weather or when flows are present in the District storm drain, submit two sets of hydraulic calculations demonstrating that the District’s system can accommodate the discharge without causing critical hydraulic impact. Information on the existing hydraulic condition of the District’s drain can be requested by calling the Department’s Design Division at 626 458-7860.

    7. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    8. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Bridge Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to construct bridges over its facilities. Initial submittals must include items 1 thru 7 - incomplete submittals will not be accepted. Please refer to the Guidelines For Overbuilding and Air Rights for guidance, clearances, and analysis approach that the submittal documents must include. Other requirements may be applied during the review.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the propose bridge (i.e. "widen exiting Main St. bridge over Rubio Wash each side by 10 feet, by extending the existing abutments and center pier"). Please print the complete name, street address, and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit five sets (seven if affecting a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District right-of-way and facility labeled with its name and stations, all necessary details, construction notes, and cross sections showing the channel and proposed bridge improvements. Please refer to the Guidelines For Overbuilding and Air Rights for required details and minimum clearances.

    3. Soils Report Submit

    Submit two copies of a soils report signed and stamped by a civil engineer registered in California

    4. Structural Report

    Submit two sets of structural calculations signed and stamped by a structural engineer registered in California. The calculations must show that the proposed improvements do not surcharge the District’s facility. If the proposed improvements are supported by caissons, they shall have sleeves down to below the channel influence lines to prevent drag forces being exerted on the storm drain facility (caisson development lengths shall not include the portion of the pile encased in sleeves). Please refer to the Guidelines For Overbuilding and Air Rights for further analysis approach.

    5. As-built Drawings

    Submit four copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    6. Right-of-Way Map

    Submit four copies of the right-of-way map for the affected District facility. The maps are available from Survey/Mapping and Property Management Division at the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    7. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The processing and inspection charges will be on an “actual cost” basis, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the permit engineer basing the estimation on the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    8. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    9. Property Rights

    Submit proof that the property rights for the proposed bridge improvements have been acquired. If the improvements being proposed encroach in property owned in “Fee” by the District, then the proponent must acquire said rights. That acquisition can be processed through the Department’s Survey/Mapping and Property Management Division, telephone 626 458-7892. Please note that during review of your permit request, you may be required to execute an agreement for the operation and maintenance of the proposed overbuild—such agreement can also be completed prior to the submittal of a permit request through the property management group. Processing an agreement or acquisition of rights can take several months. Please read the Related Information for additional information that may apply to your project.

    10. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Overbuild Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to build over its facilities. Initial submittals must include items 1 thru 7 - incomplete submittals will not be accepted. Please refer to the Guidelines For Overbuilding and Air Rights for specific guidance, clearances, and analysis approach that the submittal documents must include. Other requirements may be applied during the review.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the overbuild/air space use requested (i.e. "construction of concrete deck on caissons for parking spanning the existing rectangular channel"). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit five sets (seven if building over a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District right-of-way and facility labeled with its name and stations, all necessary details, construction notes, and cross sections showing the channel and proposed structure. Please refer to the Guidelines For Overbuilding and Air Rights for required details and minimum clearances.

    3. Soils Report

    Submit two copies of a soils report signed and stamped by a civil engineer registered in California

    4. Structural Report

    Submit two sets of structural calculations signed and stamped by a structural engineer registered in California. The calculations must show that the proposed improvements do not surcharge the District’s facility. If the proposed improvements are supported by caissons, they shall have sleeves down to below the channel influence lines to prevent drag forces being exerted on the storm drain facility (caisson development lengths shall not include the portion of the pile encased in sleeves). Please refer to the Guidelines For Overbuilding and Air Rights for further analysis approach.

    5. As-built Drawings

    Submit four copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    6. Right-of-Way Map

    Submit four copies of the right-of-way map for the affected District facility. The maps are available from Survey/Mapping and Property Management Division at the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    7. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The processing and inspection charges will be on an “actual cost” bases, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the permit engineer basing the estimation on the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    8. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    9. Property Rights

    Submit proof that the property rights for the proposed overbuild have been acquired. If the improvements being proposed encroach in property owned in “Fee” by the District, then the proponent must acquire said rights. That acquisition can be processed through the Department’s Survey/Mapping and Property Management Division, telephone 626 458-7892. Please note that during review of your permit request, you may be required to execute an agreement for the operation and maintenance of the proposed overbuild—such agreement can also be completed prior to the submittal of a permit request through the property management group. Acquisition of rights and processing an agreement can take several months.

    10. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Landscaping Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to install parkway/greenway/beautification improvements along its rights of way. Initial submittals must include items 1 thru 6 - incomplete submittals will not be accepted. Other requirements may be applied during the review.

    Important Note:

    It is important that landscaping improvements conform to any applicable Master Plan and/or landscaping guidelines. Please refer to the References section for additional guidelines applicable to beautification/landscaping work. It is recommended that prior to submitting a permit request, the project be presented to the Department’s Watershed Management Division to ensure consistency with the District’s strategic plans. It is also important to consider that if the proposed work affects a Federally-built channel, the U.S. Army Corps of Engineers has a policy which restricts construction of improvements affecting channel levees and their influence boundaries. Please refer to the Free Vegetation Zone for specific boundary details. Furthermore, it is required that prior to submitting a Flood Permit request for improvements along the Los Angeles River within the Los Angeles City boundaries, the project proponent obtain acceptance of the project from the Los Angeles River Cooperation Committee. A representative from that committee can be reached at 626 458-4325. And last but not least, it’s beneficial to check the Related Topics section for information that may apply to your project.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the proposed landscaping improvements (i.e. "installation of parkway improvements including landscaping, irrigation, bioswales, DG path, benches, decorative fencing, fountains, interpretative signs, etc. along the District-maintained San Gabriel River"). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit five sets (seven if landscaping a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer and architect registered in California; the plans must include the following at a minimum: outline of the affected District right of way and channel/drainage facility with stationing tick marks along it centerline; and all the necessary drawing details for any planting, irrigation and appurtenant improvements, including legends, symbol definitions, quantities, notes, sections, water usage information, construction details, abbreviations, index, vicinity map, north arrow, drawing scale, etc. Preliminary or incomplete plans will not be accepted. Please refer to the Landscape Review Check List and the Landscape Sample Plan for additional/typical plan requirements.

    3. Water Efficiency Calculations

    Submit two copies of water efficiency/usage calculations. They should be included on the final construction plans. You may refer to the Landscaping Plan Check Correction List or contact 626 458-3133 for further requirement details.

    4. As-built Drawings

    Submit four copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    5. Right-of-Way Map

    Submit four copies of the right-of-way map for the affected District facility. The maps are available from Survey/Mapping and Property Management Division at the Public Works headquarters, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    6. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The processing and inspection charges will be on an “actual cost” bases, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the permit engineer basing the estimation on the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    7. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    8. Property Rights

    Submit proof that the property rights for the proposed overbuild have been acquired. If the improvements being proposed encroach in property owned in “Fee” by the District, then the proponent must acquire said rights. That acquisition can be processed through the Department’s Survey/Mapping and Property Management Division, telephone 626 458-7892. Please note that during review of your permit request, you may be required to execute an agreement for the operation and maintenance of the proposed overbuild—such agreement can also be completed prior to the submittal of a permit request through the property management group. Acquiring rights or processing an agreement can take several months.

    9. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Facility Modification Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to perform drainage facility modifications such as storm drain realignment and basin reconfiguration. Initial submittals must include items 1 thru 7 - incomplete submittals will not be accepted. Other requirements may be applied during the review.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the proposed modification (i.e. "realignment of approximately 350’ of the District 45-inch RCP to accommodate new office building"). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit five sets (seven if building over a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District existing and proposed (if applicable) right-of-way, and the existing and new facility labeled with its name and stations, all necessary details, construction notes, and profile view of the new facility.

    3. Hydraulic Analysis

    Submit two sets of a hydraulic analysis signed and stamped by a civil engineer registered in California. The calculations must show that the proposed configuration of the facility meets current District hydraulic standards, or that it is at a minimum hydraulically similar as in the existing condition. For storm drains, the calculations must be substantiated with Water Surface Pressure Gradient (WSPG) calculations extending the analysis 1000 feet beyond each construction joint. For basin modifications, the capacity must be matched, therefore, geometric calculations must show that the new configuration provides the existing capacity/volume. All calculations must be consistent with the methods per the “LACDPW Hydrology Manual 2006”

    4. As-built Drawings

    Submit four copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    5. Right-of-Way Map

    Submit four copies of the right-of-way map for the affected District facility. The maps are available from Survey/Mapping and Property Management Division at the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    6. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The processing and inspection charges will be on an “actual cost” bases, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the permit engineer basing the estimation on the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    7. Soils Report

    Depending on the scope of your proposed modification, a soils report may be required. It shall bear the stamp and signature of a civil engineer registered in California. Please contact a permits engineer who will determine if such report will be needed, at 626 458-3129.

    8. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    9. Property Rights

    If the affected drainage facility is located in private property and the modification triggers a revision to its property rights, submit proof that the said rights have been dedicated. The dedication can be processed through the Department’s Survey/Mapping and Property Management Division, telephone 626 458-7892. Please note that this process can take several months.

    10. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Transfer Drain Permit Requirements

    Below is a list of submittal requirements to request a permit from the Los Angeles County Flood Control District (District) for inspection of a new storm drain intended to be transferred to the District for maintenance. Incomplete submittals will not be accepted.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner (developer), and include a description of the request (i.e. "provide inspection for the construction of new Private Drain No. XXX affecting its future transfer to the District for maintenance"). Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit two sets of the plans approved by the Department’s Land Development Division.

    3. Greensheet

    Submit a copy of the “Greensheet” issued by Land Development Division for the approval of the proposed storm drain plans.

    4. Permit Fee

    A payment for processing the permit and for inspection of the new storm drain must be submitted (cash or check and made payable to "LA County Department of Public Works"). The fee will be determined by the Permit engineer based on the bond amount per the Greensheet and a formula under the Fee Ordinance. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the payment amount.

    5. Cal-OSHA

    Submit a copy of the contractor’s Cal-OSHA certificate.

    6. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner/developer.

    7. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Filming Permit Requirements

    Requests for permission to film in a facility or rights of way operated and maintained by the Los Angeles County Flood Control District (District) must be submitted to FilmL.A. Inc. They in turn will submit the request to the District, and will collect the applicable fess. Once received by the District, other requirements that may apply will be requested. It generally takes the District two weeks to process filming requests. Please contact FilmL.A. to submit your request, they can be reached at (213) 977-8600

    Encroachment Permit Requirements

    Below is a list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) to construct privately maintained improvements encroaching in the District’s rights of way and facilities—improvements such as utility lines and poles, fire access lanes, parking improvements, storage sheds, backyard beautification, etc. Initial submittals must include items 1 thru 5 - incomplete submittals will not be accepted. Other requirements may be applied during the review.

    1. Application Form

    2. Engineering Plans

    Submit five sets (seven if affecting a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District right-of-way and facility labeled with its name and stations, all necessary details, construction notes, and cross sections showing the facility and proposed improvements.

    3. As-built Drawings

    Submit four copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    4. Right-of-Way Map

    Submit four copies of the right-of-way map for the affected District facility. The maps are available from Survey/Mapping and Property Management Division at the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    5. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The processing and inspection charges will be on an “actual cost” bases, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the permit engineer basing the estimation on the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    6. Structural Report

    If the proposed improvements introduce any new loads on the District’s facilities, submit two sets of structural calculations signed and stamped by a structural engineer registered in California. The calculations must show that the proposed improvements do not surcharge the District’s facility. As an example, if a proposal is made to construct surface parking over a District easement and storm drain, the new traffic loads (including those of the construction equipment) must be analyzed to show that they do not surcharge the storm drain critically. Any loads due to additional fills also must be considered in the analysis. Please contact a permit engineer who will determine if structural calculations (or any other engineering reports or calculations) will be required for your proposed encroachment.

    7. BMP Acknowledgement

    Submit the BMP Acknowledgement form signed by the project owner.

    8. Property Rights

    Submit proof that the property rights for the proposed encroachment have been acquired, or that alternative rights have been granted to the District, whichever the case might be. If the improvements being proposed encroach in property owned in “Fee” by the District, then the proponent must acquire rights (easement, lease, etc). That acquisition can be processed through the Department’s Survey/Mapping and Property Management Division, telephone 626 458-7892. Please note that during review of your permit request, you may be required to execute an agreement for the operation and maintenance of the proposed improvements—such agreement can also be completed prior to the submittal of a permit request through the property management group. Processing of rights or agreement can take several months.

    9. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

    Other Permit Requirements

    Below is a general list of submittal requirements for requesting a permit from the Los Angeles County Flood Control District (District) for activities or construction of improvements affecting the District’s rights of way or facilities. In general, construction of improvements/facilities affecting the District’s interests requires the submittal of an application, engineering documents, a permit processing payment, and as-builts and right-of-way drawings for the affected facility, among other requirements that would be applied during the review process. Below is general information on what each submittal item should contain/address. However, it is particularly important to contact or meet with a permit engineer for a full list of the submittal requirements specific to your project/needs. Incomplete submittals will not be accepted. Submittal packages must be submitted in person at the permits counter, located on the 8th floor of 900 S. Fremont Ave., Alhambra, CA 91803.

    1. Application Form

    The Flood Permit Application must be completed and signed by the project owner, and include a detailed description of the proposed encroachment. Please print the complete street address and telephone number of the owner and the agent, the project site address, and the Thomas Guide page and grid.

    2. Engineering Plans

    Submit five sets (seven if affecting a U.S. Army Corps of Engineers built channel) of final construction plans size 24” x 36” (electronic copies may be required), signed and stamped by a civil engineer registered in California; showing the District right-of-way and facility labeled with its name and stations, all necessary details, construction notes, and cross sections showing the facility and proposed improvements. Depending on the scope of the proposal, a drawing sketch or scope description may suffice. A permit engineer will determine the exact detail needed.

    3. Engineering Calculations

    If the proposed improvements introduce any new loads on the District’s facilities, submit two sets of structural calculations signed and stamped by a structural engineer registered in California. The calculations must show that the proposed improvements do not surcharge the District’s facility. As an example, if a proposal is made to construct surface parking over a District easement and storm drain, the new traffic loads (including those of the construction equipment) must be analyzed to show that they do not surcharge the storm drain critically. Any loads due to additional fills also must be considered in the analysis. Structural calculations may need to be substantiated by a soils report. Furthermore, hydraulic or hydrologic calculations may be required as deemed necessary. Please contact a permit engineer who will determine if any engineering calculations will be required for your proposed work/activities.

    4. As-built Drawings

    Submit four copies of the as-built plans for the affected District facility, they are available from the Plan Room at the Department of Public Works headquarters in Alhambra, or through the Department's website (http://dpw.lacounty.gov/smpm/landrecords/).

    5. Right-of-Way Map

    Submit four copies of the right-of-way map for the affected District facility. The maps are available from Survey/Mapping and Property Management Division at the Public Works headquarters, or through the Department's website under the following link: http://dpw.lacounty.gov/smpm/landrecords/

    6. Permit Payment

    A payment for processing the request and for inspection must be submitted (cash or check and made payable to "LA County Department of Public Works"). The permit payment will be as allowed by the Fee Ordinance and based on the scope of the proposal. If payment is to be on “actual cost” bases, therefore, an up-front deposit will be required upon submittal. The deposit amount will be determined by the permit engineer basing the estimation on the scope of the project. Please visit the Permits Counter or contact an engineer at 626 458-3129 to request the amount. Monetary adjustments (refunds or additional payments) will be made throughout the process as needed.

    7. BMP Acknowledgement

    If your proposal will involve construction work, submit the BMP Acknowledgement form signed by the project owner.

    8. Property Rights

    Submit proof that the property rights for your proposal have been acquired, or that alternative rights have been granted to the District, whichever the case might be. If the proposal involves encroaching in property owned in “Fee” by the District, then the proponent must acquire rights (easement, lease, use agreement, etc). That acquisition can be processed through the Department’s Survey/Mapping and Property Management Division, telephone 626 458-7892. Please note that during review of your permit request, you may be required to execute an agreement for the operation and maintenance of any proposed improvements—such agreement can also be completed prior to the submittal of a permit request through the property management group. Processing of rights or agreement can take several months.

    9. Liability Insurance

    Submit a certificate of liability insurance with a minimum $1,000,000 limit and the Los Angeles County, Department of Public Works as the certificate holder. An Additional Insured Endorsement in favor of the County and District is also required. Please refer to the example Insurance Certificate.

Related Information
    Jurisdiction

    Before submitting an application for a permit, make sure the facility or right of way affected by your project is under the jurisdiction of the Los Angeles County Flood Control District (District). Additionally, there are segments of channels within the District’s jurisdiction that are maintained by the U.S. Corps of Engineers (Corps), which involve property rights in favor of the District. In these cases, requests for a construction permit must be submitted directly to the Corps. However, upon receipt of a Corps permit, the proposed project will also require a Right of Entry or Access permit from the District. A District permit engineer can be reached at (626) 458-3129 for the submittal requirements which will include an application form, Corps approved project plans, Corps 408 Permit, and fees.

    Review Time

    Processing access and filming permits takes approximately 2 weeks; permit requests for construction of simple connections or modifications take from 3 to 5 weeks; requests needing extensive engineering review take 4 to 6 weeks per round of review. These times do not include the time needed to acquire entitlements (i.e. property rights, use agreements, leases) or outside-agency approvals (i.e. US Army Corps of Engineers, State Fish & Game, CEQA, RWQCB, etc.) that may be required.

    Conceptual Reviews

    In cases where a potential customer may wish to seek conceptual review prior to the full engineering application of a project, a request for conceptual review should be submitted to the Department’s Watershed Management Division. Please contact 626 458-4301 for coordination.

    Other Approvals

    It is the responsibility of the project proponent to obtain all the necessary approvals and clearances from other agencies and underlying property owners. Proof of some approvals may be required prior to the issuance of a Flood Permit.

    Other Agency Clearances

    Depending on the magnitude and scope of the proposed project, clearances/approvals from other agencies may be required such as the U.S. Army Corps of Engineers, California Fish and Game, U.S. Environmental Protection Agency, Agricultural Commission, The Regional Water Quality Control Board, etc. All environmental clearances must be adopted by the lead agency prior to the issuance of a District Permit.

    Entitlements/Property Rights/Agreements

    The project proponent may be required to submit proof that property rights for the proposed improvements/activities have been acquired, or to dedicate rights (easements, etc.) in favor of the District, or to complete other processes as triggered by the project scope. In certain instances, processing of the permit request and dedication/acquisition of rights of way may occur concurrently. Be advised that the right of way dedication process may take several months and is normally done directly with the Survey/Mapping and Property Management Division who will impose separate fees and requirements. Other projects that may require the execution of leases, agreements, etc., will follow a similar process. It is strongly recommended that the permit and right-of-way process be given ample time to avoid project delays.

    Army Corps Review—408 Permit

    Any project that affects a facility built by the U.S. Army Corps of Engineers (Corps) will require their approval (408 Permit). In these cases, the District will coordinate the review by both agencies, however, review will not be performed concurrently. For that reason, upon achieving DPW’s acceptance, requests may take a few additional months to obtain Corps approval. Furthermore, an operational and maintenance agreement must be executed, upon project approval by both agencies, prior to the issuance of a Flood Permit. It is strongly recommended that requests affecting Corps-built facilities be given ample time to avoid project delays.

    Los Angeles River Cooperation Committee

    Before a request for a Flood District permit can be accepted, the project proponent must obtain acceptance for the proposed project from the Los Angeles River Cooperation Committee which can be reached at 626 458-4341.

    Storm Season

    Removal of storm drain improvements will not be allowed during the storm season (from October 15 to April 14) and restricted during the dry season at the Discretion of the District engineer depending on dry-weather forecasts. Obstruction or diversion of flows must be formally approved by the District prior to their implementation. During the period from April 15 to October 15, certain work activities may be allowed in the channel. However, capacity to convey flows around any obstructions or openings in the channel lining shall be provided as follows: June 1 to August 31- 5 percent of design capacity. September 1 to October 15 - one-third design capacity.

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