As nearly half the county's water supply comes from groundwater, the district actively monitors groundwater to assess groundwater conditions and to ensure groundwater resources are sustained and protected.
The district monitors regional groundwater quality to evaluate current conditions and identify potentially adverse trends so that appropriate action can be taken to protect groundwater resources. The district also monitors the quality of water used for groundwater recharge to ensure groundwater quality is protected. Groundwater quality data is summarized in the district's Annual Groundwater Report and Groundwater Quality Summary.
The district actively monitors groundwater elevations to evaluate current groundwater conditions and land subsidence, optimize recharge efforts, assess groundwater storage, and support groundwater management efforts. The district also surveys hundreds of benchmarks each year to determine if there has been any change in the land surface elevation.
Recent monthly reports on water level conditions are available below. For prior reports, please contact the district’s Groundwater Hotline at (408) 630-2300. You can also directly search groundwater elevation data for specific areas using the link below.
|January 2021 Groundwater Condition Report||304.31 KB|
|December 2020 Groundwater Condition Report||326.89 KB|
|November 2020 Groundwater Condition Report||320.96 KB|
|October 2020 Groundwater Condition Report||320.19 KB|
|September 2020 Groundwater Condition Report||320.01 KB|
|August 2020 Groundwater Condition Report||277.27 KB|
|July 2020 Groundwater Condition Report||315.29 KB|
|June 2020 Groundwater Condition Report||313.27 KB|
|May 2020 Groundwater Condition Report||313.71 KB|
|April 2020 Groundwater Condition Report||241.98 KB|
|March 2020 Groundwater Condition Report||312.47 KB|
|February 2020 Groundwater Condition Report||290.56 KB|