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Denniston Creek : ウィキペディア英語版 | Denniston Creek Denniston Creek is a 〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed March 15, 2011〕 coastal stream in western San Mateo County, California. Denniston Creek rises on the western slopes of Montara Mountain and discharges to the Pacific Ocean at Pillar Point Harbor somewhat north of El Granada Beach. The watershed of Denniston Creek is made up of relatively permeable sandy soils capable of significant recharge to its aquifers, which supply a moderate amount of potable water to the local area. ==Groundwater== In the headwaters reach high on Montara Mountain, coarse grained decomposed granite overlies heavily fractured granitic based bedrock aquifers.〔(Balance Hydrodgeologics Inc.,''San Mateo County Mid-Coast Aquifers: Literature Review'', prepared for San Mateo county Board of Supervisors (2002) )〕 This upper pocket groundwater complex feeds down-basin alluvial fan deposits on the coastal plain. These alluvial fans exhibit some characteristics of a confined aquifer, but also respond to pressure and recharge from precipitation.〔Geoconsultants Inc., ''Annual report 1988-1989: Groundwater Resources, Half Moon Bay, California'', prepared for the city of Half Moon Bay (1989)〕
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