COMPLIANCE INFO_1993-1997 - Laserfiche WebLink

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�5 6 , Soil Survey O-'F ct 2- L) U S 1)y� Figure 2.—The meandering drainageways and closed depressions in this area of Redding loam,0 to 3 percent slopes,fill with water to form vernal pools in the winter. More than 50 percent of the surface is covered with cobbles.The cobbles and the ponding result in only sparse vegetation in the pools. An area of a Pentz sandy loam is on the hillslopes in the background. south to north. Large aqueducts have been constructed major reservoir in the county. Farmington Dam, on Little to export water to counties south of the survey area and Johns Creek, controls seasonal flooding by impounding have changed the natural flow of the San Joaquin River floodwater in a flood-control basin during peak flows. and the Mokelumne River through the Sacramento-San Joaquin Delta. These aqueducts and the diversions in Climate areas of the Sacramento River system in the northern BY William R. Reed and Guy J. Romito, Soil Conservation Service. part of the Central Valley have resulted in reverse flows in the Sacramento-San Joaquin Delta area and in the The climate of San Joaquin County is characterized part of the San Joaquin River in the survey area. by hot, dry summers and cool, moist winters. The Sierra Upstream dams protect areas along all of the major Nevada shields the county from the continental climatic rivers in San Joaquin County. They control the flow of extremes that are evident to the east. To the west, the the San Joaquin, Mokelumne, and Stanislaus Rivers. Coast Range moderates the effects of moisture-laden The Camanche Dam, on the Mokelumne River, weather systems from the Pacific Ocean. Summers are provides water for the Camanche Reservoir, the only hot and dry because a persistent high-pressure area