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Basin location [4] Basin size [4] Basin map 180701 Ventura–San Gabriel Coastal water resource basin: The drainage into the Pacific Ocean from the Rincon Creek Basin boundary to and including the San Gabriel River Basin. [5] Ventura County, Los Angeles County: 4,530 sq mi (11,700 km 2) HUC180201: 180702 Santa Ana water resource basin
California groundwater basins, subbasins, and hydrologic regions. The California Department of Water Resources recognizes 10 hydrologic regions and three additional drainage areas within the U.S. state of California. The hydrologic regions are further subdivided into 515 groundwater basins. [1]
This map of United States water resource subregion hydrologic units updated boundaries to include the ocean as well as the portions of the basins that cross international borders For the use of hydrologists, ecologists, and water-resource managers in the study of surface water flows in the United States, the United States Geological Survey ...
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.
Map of California's interconnected water system, including all eleven reservoirs over 1,000,000 acre-feet (1.2 km 3) as well as selected smaller ones. This is a list of the largest reservoirs, or man-made lakes, in the U.S. state of California.
The San Diego Creek watershed is about 80 percent of the total land draining into Newport Bay – one of the largest estuaries in Southern California – and contributes between 77 [9] and 95 percent [10] of the total fresh water inflow to the bay. The population of the Newport Bay watershed in 2000 was about 705,000, which is projected to grow ...
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]
The San Gabriel River (right of the I-605 here) changes from dirt to concrete channel in Downey, near the Rio San Gabriel Park (right center) The San Gabriel River basin drains a total of 689 square miles (1,780 km 2) [3] and is located between the watersheds of the Los Angeles River to the west, the Santa Ana River to the east, and the Mojave Desert to the north.