San Gabriel River


The San Gabriel River flows 60.6 miles through Los Angeles County. Its watershed is deep in the San Gabriel Mountains within the Angeles National Forest north of the Los Angeles Basin. The river flows across the San Gabriel Valley south through Downey, Norwalk, Bellflower, Cerritos, Cypress, Long Beach, Seal Beach, and then into Alamitos Bay and the Pacific Ocean. The San Gabriel River watershed is a habitat for the endangered Steelhead trout and the Mountain Yellow-Legged frog which was once threatened with extinction. The San Gabriel River basin was occupied by the Tongva People for thousands of years before the area was claimed by Spain and later by Mexico.


Morris Dam and Reservoir

Samuel B. Morris Dam

The Morris Dam is a concrete gravity dam, 245 feet high and 750 feet long, completed in 1934 in the Angeles National Forest, north east of Azusa, California in northern Los Angeles County. The dam, built on the San Gabriel River, impounds the Morris Reservoir which has a surface area of 417 acres and is approximately three miles long. During World War II, and until the early 1990s, the reservoir was used to test navel weapons. The military facilities have been removed except for several large concrete foundations which are visible from State Route 39.


San Gabriel Dam

The San Gabriel Dam, completed in 1939, is a rock-fill dam on the San Gabriel River within the Angeles National Forest in northeastern Los Angeles County approximately 4.9 miles north of Glendora. The 315 foot high, 1,520 foot long dam created the 525-acre San Gabriel Reservoir. The dam provides hydroelectricity for the San Gabriel valley section of eastern Los Angeles County and flood control. It is stocked with rainbow trout, bluegill, carp, catfish, smallmouth bass, brown trout, and bream. Fishing is permitted with a license.


San Gabriel River Watershed

The San Gabriel River Watershed, consisting of approximately 640 square miles, is located in the eastern area of Los Angeles County. It is bounded by the San Gabriel Mountains to the north, parts of Orange County and San Bernardino County to the east, the division of the Los Angeles River from the San Gabriel River to the west, and the Pacific Ocean to the south. The San Gabriel River runs from the San Gabriel Mountains above the San Gabriel Valley south to the Pacific Ocean. The major tributaries to the San Gabriel River include Walnut Creek, San Jose Creek, and Coyote Creek.


Council for Watershed Health

Los Angeles & San Gabriel Rivers Watershed Council

The Council for Watershed Health, previously known as the Los Angeles & San Gabriel Rivers Watershed Council, was formed in 1996. Its objective is to bring together representatives from all water agencies, government regulatory agencies, citizens, and other responsible, interested parties, in order to help preserve, restore, and enhance the Los Angeles River, the San Gabriel River, and their watersheds. The organization is supported primarily by tax dollars. Council members are from the following: Los Angeles Flood Control District, Metropolitan Water District of Southern California, Sanitation Districts of Los Angeles County, County of Los Angeles Flood Control District, California Coastal Conservancy, United States Bureau of Reclamation, Rivers and Mountains Conservancy, California Department of Water Resources, and the Annenberg Foundation. The non-profit organization is headquartered in Downtown Los Angeles.


San Gabriel River Bike Trail

The San Gabriel River Bike Trail is a 38 mile bicycle path along the San Gabriel River. It starts at the base of the San Gabriel Mountains, extends through the El Dorado Park in Long Beach, and terminates at the Pacific Ocean in Seal Beach, Orange County.


Coyote Creek

Coyote Creek is a major tributary of the San Gabriel River that flows through San Bernardino County, Riverside County, Los Angeles County, and Orange County. It joins the San Gabriel River near the City of Long Beach. Tributaries of Coyote Creek include Brea Creek, Carbon Creek, and Fullerton Creek. The river flows 13.7 miles and flows past Brea, Buena Park, Fullerton, La Habra, and La Palma.


Fullerton Creek

Fullerton Creek is a 10.5 mile long, tributary of Coyote Creek which is a lower tributary of the San Gabriel River. The creek originates at Fullerton Dam. Brea Creek is to the north and Carbon Creek is to the south. Both are tributaries of Coyote Creek.


Fullerton Creek Greenbelt

Fullerton Creek Greenbelt is a 7.86 acre open space greenbelt that overlooks Fullerton Creek.


Brea Creek

Brea Creek is an 11.7 mile creek and major tributary of the Coyote Creek which is a major tributary of the much larger San Gabriel River. The creek flows from Brea and Anaheim to Whittier where it joins the Coyote Creek. Brea Creek drains parts of Orange County, San Bernardino County and Riverside County. The Tongva Indians made their homes along the Brea Creek, Coyote Creek, and San Gabriel River for thousands of years before the area was claimed by Spain and later by Mexico.


Southern California Watersheds

A watershed is an area of land that collects water whenever it rains or snows and from irrigation. Through gravity, water channeled into soils, groundwater, creeks, and lakes, drain into larger bodies of water and eventually to the ocean. Due to the large volume of storm water, it cannot be treated before it reaches the ocean. Since we all live in a watershed, we can all help in keeping our area free of harmful chemicals and other waste.


Tongva Indian Villages

Tongva Indian Villages were located in the Los Angeles Basin for thousands of years. These villages were located near and around the ever changing Los Angeles River, San Gabriel River, Santa Ana River, and the coastal areas.