Frequently Asked Questions (FAQ)

Where can I obtain the PDF files for the LA County Hydrology Design Manual appendices?

The Hydrology Manual consists of more than 120 Acrobat (.pdf) files. Each appendix and its components, if any, are separate files. In order to download a file, such as an appendix or its component, you have to open it first. Download the file by selecting the diskette icon in the acrobat window and "save a copy" of the selected file.

The entire manual is also available on CD-ROM and can be purchased from our cashiers office (about $39). Our cashiers office is located on the mezzanine (M) level of our Headquarters at 900 South Fremont Avenue, Alhambra, CA 91803, Tel. No. 626-458-6397. It is open Monday through Thursday.

Hydrology WRD SWE hydrology sedimentation hydraulic hydrological wells groundwater rainfall conservation depth precipitation alert gauges stormwater engineering