Central valley of California

Two major rivers in California influenced by a Mediterranean climate are the Sacramento River and the San Joaquin River. The Sacramento River drains 72,132 km with a relief of 4,317 m. Mean discharge is 650 m /s with peak flows in the winter and early spring and with minimum flows in the late summer and early fall. The San Joaquin River drains 83,409 km with a relief of 4,418 m. Mean discharge is 130 m /s with peak flows in spring and low flows in late summer and fall. Population density is 24 people/km in the Sacramento River basin and 29 people/km in the San Joaquin basin. Agriculture in the Central Valley of California that encompasses parts of both basins is the primary user of water in both basins [1]. 

Johnson ML, Salveson A, Holmes L, et al. 1998. Environmental estrogens in agricultural drain water from the Central Valley of California. Bull Environ Contam Toxicol 60 609-614. 

Liver Subpopulation that overwintered in Central Valley of California feeding mainly on rice seeds 47 (20-87) DW 135... 

Avocet, Recurvirostra americana] south Central Valley of California 1991 Contaminated ponds (29-109 mg B/L) Egg 8.3-10.5 DW 15... 

Ambient diazinon concentrations were measured under foggy atmospheric conditions in and around the Central Valley of California (Parlier, California), which is a prime agricultural area dominated by fruit, nut, and citrus orchards (Glotfelty et al. 1990a Seiber et al. 1993 Zabik and Seiber 1993). In fog, diazinon concentration was 1.6 ng/m3 and diazoxon (the oxon transformation product) concentration was... 

Selenium pollution in the Central Valley of California, Selenium occurs naturally in sediments and soils in many parts of the Western U.S. as well as other parts of the world (e.g., China). When such soils are irrigated for agricultural purposes, this element becomes soluble and is transported in agricultural drainage waters to ponds and reservoirs where it becomes concentrated in water-borne plants and animals (up to 3000 ppm) (Frankenberger and Benson 1994). One result of this concentration process was discovered in the early 1980 s by government scientists at the Kesterson National Wildlife Refuge in Merced... 

Hardy JL. The ecology of western equine encephalomyelitis virus in the central valley of California, 1945-1985. Am J Trop Med Hyg. 1987 37(suppl) 18S-32S. 

Meadows, The Grasslands, Indian Creek, Riverbank Estates, Elk Grove Townhouses, Miwok Village. Before the Spaniards came, 300 tribes shared the Central Valley of California."... 

Before the Spaniards came, 300 tribes shared the Central Valley of California...Maidu, Miwok, Patwin. A few weeks of flooding each winter fed the great marshes and seasonal lakes, but for most of the year—the seven month dry season when Indians moved to the cooler surrounding foothills— the Great Central Valley got, and still gets, less rain than North Africa. It was the American Serengeti. 

Water is not significantly cooled by exchanging sensible heat with cold air. Most of the cooling results from the humidification of the air. If you live in the Central Valley of California, your home is likely... 

Water is not significantly cooled by exchanging sensible heat with cold air. Most of the cooling results from the humidification of the air. If you live in the Central Valley of California, your home is likely cooled with a "swamp cooler," rather than with a freon compressor. The water partially evaporates as it mixes with the dry air. The latent heat of evaporation of water is 1000 Btu/lb. If 2 percent of the water evaporates by contact with the cold air, the water loses 20 Btu/lb. The specific heat of water is one Btu/lb per 1°F. Thus, the water will be cooled by 20°F by evaporation. 

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