|
|
Westside Groundwater Basin Conjunctive Project:
The South Westside Basin Groundwater Conjunctive Use Project is a regional dry-year groundwater supply project located in northern San Mateo County. The purpose of the Project is to develop a new dry-year groundwater supply that can be utilitized at a rate of 8,100 acre-feet per year during the 7-1/2 year design drought cycle. During normal and wet years the SFPUC will deliver supplemental surface water to Daly City, San Bruno, and Cal Water (South San Francisco District) in place of groundwater pumping. Reducing such pumping in normal and wet years thereby increases the volume of groundwater in storage that can be pumped in dry years. The Alternatives Analysis Report (October 2007) present the recommended Project to achieve the WSIP Water Supply level of service.
Local Groundwater Project:
The project will update and adopt the Groundwater Management Plan for North Westside Basin, including construction of groundwater wells that can be pumped as emergency and regular supply in the Sunset District and near the Lake Merced Pump Station; and installation of a groundwater monitoring well network in the Sunset District and along the Great Highway to assess baseline conditions prior to further groundwater development. This project provides for approximately six (6) new groundwater production wells. Well pump stations, disinfection units, and piping are assumed.
Restore Lake Merced Water Levels:
This project will result in the restoration of Lake Merced water levels using a supplemental source(s) of water (treated storm water, recycled water, groundwater or SFPUC system water). An interim and long-term water level elevation range will be established. New tasks include: (1) Needed upgrades to the Lake Merced Pump Station to improve the method for adding dechlorinated system water and groundwater to the lake: (2) New instruments for measuring and reporting lake levels; (3) New bathymetry and shoreline surveying; and, (4) New studies at the Pacific Rod and Gun Club evaluating potential need for cleanup of residual lead shot prior to raising lake levels further.
Need more information?
Contact Suzanne Gautier at (415) 554-3204 or sgautier@sfwater.org
