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Map of water storage and delivery facilities as well as major rivers and cities in the state of California. Central Valley Project systems are in red, and State Water Project in blue. California's interconnected water system serves almost 40 million people and irrigates over 5,680,000 acres (2,300,000 ha) of farmland. [1]
Cordilleras Creek is a 3.8-mile-long (6.1 km) [4] northward-flowing stream originating in the Pulgas Ridge Open Space Preserve in the foothills of the Santa Cruz Mountains.It forms the border between San Carlos and Redwood City in San Mateo County, California, United States before entering Smith Slough where its waters course to Steinberger Slough and thence to San Francisco Bay.
The Novato Creek watershed is known to support 10 extant fish species (6 native and 4 introduced). Native species include California roach, Sacramento pikeminnow, Sacramento sucker, steelhead, threespine stickleback, and Prickly sculpin. Introduced species include rainwater killifish, western mosquitofish, striped bass, and green sunfish. [4]
California region, with its 10 4-digit subregion hydrologic unit boundaries. The California water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey in the United States hydrologic unit system, which is used to divide and sub-divide the United States into successively smaller hydrologic units.
The Laguna Creek watershed consists of 25.1 square miles (100 km 2) of land within northern California's Alameda County. The watershed drains the foothills of the Diablo Range south of Niles Canyon. To the southeast, the area of Mission Peak Regional Preserve around Mission Peak is included. Agua Caliente, Canada del Aliso, Mission, Morrison ...
The watershed experiences a moderately wet Mediterranean climate, with a mean annual rainfall of 24 to 29 inches (610 to 740 mm). [ 7 ] The East Fork of San Luis Obispo Creek is the largest sub-basin, and drains most of the southern part of the city of San Luis Obispo.
From 1800s to the mid 1900s, mercury was mined free of environmental regulation causing an influx of the element within Cache Creek. [8] In 2001, the Central Valley Regional Water Quality Control Board and the U.S. Geological Survey confirmed that Cache Creek was a contributor to the increase of mercury levels within the Sacramento River. [9]
On the west side of the town, the creek is joined by Olema Creek, the largest tributary in the Lagunitas Creek watershed. Olema Creek receives Bear Valley Creek, and mainstem Olema Creek flows for 9 miles (14 km) along the San Andreas Fault Zone, with a catchment area of 14.5 square miles (38 km 2). [5]