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.(Wikipedia)