The primary purpose of this project is to restore habitat in Bouquet Canyon Creek. An important component of this restoration is reestablishing the creek's flow pattern and flow-carrying capacity such that the now-dry reaches of the creek can again receive water. Reestablishing creek flows to the southern end of Bouquet Canyon would potentially increase fish habitat and replenish the groundwater wells of residents downstream of the project site. The flow pattern reestablishment would also prevent flow impacts to Bouquet Canyon Road during reservoir releases and during many storm events.
The project site is located within an unincorporated area of northern Los Angeles County and within the southern part of the Santa Clara portion of the U.S. Forest Services' Santa Clara/Mojave Rivers Rangers District of the Angeles National Forest. The project consists of an approximate 10-mile stretch of Bouquet Canyon Creek downstream of Bouquet Reservoir.
Much of Bouquet Canyon was burned by a wildfire. Major storms on the burned watershed caused significant sediment deposition within the reach of Bouquet Canyon Creek below Bouquet Reservoir, which is owned and operated by the City of Los Angeles Department of Water and Power. This deposition has greatly reduced the creek's flow-carrying capacity to the extent that even low flows migrate out of the creek. This change in flow pattern, along with prolonged drought conditions in the region, have led to reduced habitat in the creek for fish and an overall degradation of the habitat quality in and along the creek. The flow pattern change has also led to decreased releases from Bouquet Reservoir, to lessen flooding impacts to Bouquet Canyon Road. As a result of the drought and decreased reservoir releases, flows making their way to residents and the groundwater wells below the canyon have been reduced.
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This project is in the concept phase. The County of Los Angeles Department of Public Works (LACDPW) selected CDM Smith to undertake the engineering analysis necessary to develop a restoration plan for Bouquet Canyon Creek. LACDPW is also currently consulting the multiple jurisdictional agencies to ascertain the extent of their ability to partner with LACDPW on the restoration effort.