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Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin. It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.
The newer delineation work on watersheds and subwatersheds was done using 1:24,000 scale maps and data. As a result, the subbasin boundaries were changed and adjusted in order to conform to the higher resolution watersheds within them. Changes to subbasin boundaries resulted in changes in area sizes.
Pages in category "Watersheds of California" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes. C.
The Santa Ana water resource basin is a third-level subdivision of the United States hydrologic unit system. [1] The Santa Ana basin is approximately 2,680 sq mi (6,900 km 2; 1,720,000-acre) and includes the drainage into the Pacific Ocean from the San Gabriel boundary to the Moro Canyon drainage boundary near Laguna Beach. [1]
Cottonwood Creek is a major stream and tributary of the Sacramento River in Northern California.About 68 miles (109 km) long measured to its uppermost tributaries, the creek drains a large rural area bounded by the crest of the Coast Ranges, traversing the northwestern Sacramento Valley before emptying into the Sacramento River near the town of Cottonwood.
The Calero Reservoir. The Guadalupe River watershed consists of 170 square miles (400 km 2) of land within northern California's Santa Clara County.The surface runoff from this area drains into the Guadalupe River, its tributary streams, reservoirs or other bodies of water which all eventually gets carried into the San Francisco Bay (indicated below, with surrounding counties in red).
The Santa Clara River (Spanish: Río Santa Clara) is an 83 mi (134 km) long [5] river in Ventura and Los Angeles counties in Southern California.It drains parts of four ranges in the Transverse Ranges System north and northwest of Los Angeles, then flows west onto the Oxnard Plain and into the Santa Barbara Channel of the Pacific Ocean.
The watershed is approximately 19 miles (31 km) long and 13 miles (21 km) wide with the City of Petaluma near its center. At 2,295 feet (700 m), Sonoma Mountain is the highest point in the watershed, and its western slopes drain to the Petaluma River by way of tributaries such as Lichau Creek, Lynch Creek, Washington Creek, and Adobe Creek. The ...