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Quarry Lakes Regional Recreation Area is a regional park located in Fremont, CA that is part of the East Bay Regional Parks system. Before being converted into a park, the site was used as a gravel quarry. When water purchased by the public for groundwater recharge of the Niles Cone flooded the gravel pits, the gravel harvesters began to daily pump the seeping water down Alameda Creek into San Francisco Bay. The Alameda County Water District acquired the quarry after the pumping was declared to be an illegal waste in 1976. The Park is located roughly between Centerville and Niles. It is bounded to the northeast by the train tracks of the BART system, and to the south and west by Alameda Creek. ==History== As early as 1912, the Niles Sand and Gravel Company operated a gravel plant along the south bank of Alameda Creek in Niles, processing gravel and sand from the river bed for concrete production. In 1954, the company expanded into the area now in the park, acquiring an operation previously managed by Black Point Aggregates. By 1969, some of the gravel pits had been dug down to 120 feet below the surface, well below the water table. To continue extraction at this point, the company pumped the water flooding the pits out into adjacent Alameda Creek at a rate of five million gallons a day, enough to supply 30,000 people. In 1972, the Niles Sand and Gravel Company sued the Alameda County Water District, arguing that its groundwater recharge program constituted a damaging of their ability to use the quarry. After finding that the replenishment program served a beneficial purpose in combating seawater intrusion from the San Francisco Bay and that the gravel pits would have flooded naturally even if the program were not in place, the court ruled against the company, declaring its pumping to be an illegal waste of groundwater. Between 1975 and 1992, the EBRPD and ACWD purchased the land which would become Quarry Lakes. The two agencies began to convert the area into parkland in 1997, with the ACWD continuing to pursue restoration projects beyond 2017.〔(【引用サイトリンク】title=Quarry Lakes Regional Recreation Area )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quarry Lakes Regional Recreation Area」の詳細全文を読む スポンサード リンク
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