Dewatering for basement construction is about to get into full swing for the 2016 “season.” As of this writing, two sites have completed dewatering, including one that discharged nearly 31 million gallons into the storm drains, one that is about one-half way through the dewatering process, and three more that are imminent. The City’s Department of Public Works has updated its dewatering site map, which can be also accessed from Save Palo Alto’s Groundwater’s Maps Page. While you are on our Maps page, check out other maps relevant to Palo Alto’s groundwater, including an updated groundwater depth map from Bob Wenzlau (Terradex) that also shows the flood zone and locations of toxic plumes, a map created by Save Palo Alto’s Groundwater from data provided by Palo Alto’s Public Works Department that shows the locations of the 2015 dewatering sites, and a map from a 1995 USGS report documenting historical subsidence in the Bay Area of between 1.5 and 3 feet in Palo Alto (and much more in San Jose).
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