GSP Annual Report
5-022.07 DELTA-MENDOTA
2022 (OCT. 2021 - SEP. 2022)
Single Annual Report
GSP Annual Report Information Comments
03/31/2023 8:58 AM
2022 (OCT. 2021 - SEP. 2022)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
563,900
Water Use Sectors
21,900
6,400
501,600
34,000
0
0
0
B Groundwater Extraction Methods
Meters
0
Electrical Records
0
Land Use
0
Groundwater Model
0
Other
563,900
Estimate
Other
Sum of self-reported volumes from each GSA within the Delta-Mendota Subbasin across six GSP regions
Measurement method is Estimate and varies by each of the 23 GSAs in the Delta-Mendota Subbasin
C Surface Water Supply
Total Surface Water Supply (AF)
1,053,300
Methods Used to Determine
Sum of self-reported volumes from each GSA within the Delta-Mendota Subbasin across six Subbasin GSP regions
Water Source Types
837,100
500
0
4,400
81,700
18,600
0
111,000
Surface water supplies sourced from the Kings and/or San Joaquin Rivers. (Please note that Local Supplies are sourced from local creeks, which include any naturally-occurring surface water course other than Kings or San Joaquin Rivers.)
D Total Water Use
Total Water Use (AF)
1,388,300
Methods Used to Determine
Sum of self-reported volumes from each GSA within the Delta-Mendota Subbaisn across six Subbasin GSP regions; Reflects water lost through canal leakage, pipe leakage, and other percolating waters
Water Source Types
421,600
934,200
18,600
13,900
0
Water Use Sectors
16,700
2,600
1,135,500
233,500
0
0
0
E Change in Storage
Method used to calculate change in storage
Upper Aquifer change in storage estimate for the Delta-Mendota Subbasin is calculated by rolling up the change in storage estimates calculated individually by each of the six Subbasin GSP regions. Two different methods were chosen by the respective GSP regions and summed to a Subbasin total: change in groundwater elevation contours used by Aliso Water District, Farmers Water District, and Fresno County Management Areas A and B GSP regions; and representative hydrographs used by the Grassland, Northern & Central Delta-Mendota, and San Joaquin River Exchange Contractors GSP regions. Lower Aquifer change in storage estimate in the Delta-Mendota Subbasin is calculated by rolling up the change in storage estimates calculated individually by each of the six Subbasin GSP regions. Two different methods were chosen by the respective GSP regions and summed to a Subbasin total: change in land surface elevation using the best available data was used by the Aliso Water District, Grassland, Northern & Central Delta-Mendota Region, and San Joaquin River Exchange Contractors GSP regions [Source: December 2021 and December 2022 Tables, Bureau of Reclamation Static GSP Survey for Subsidence Monitoring, Central Valley California. Retrieved from http://www.restoresjr.net/science/subsidence-monitoring/; Note: Additional refinements provided by Kenneth D. Schmidt & Associates using additional local data, where the Northern & Central Delta-Mendota Region used additional data sources to provide complete spatial coverage (Sources: Nevada Geodetic Laboratory dataset retrieved from http://geodesy.unr.edu/ and local data collected by Patterson Irrigation District, West Stanislaus Irrigation District, and Tranquillity Irrigation District)]; and change in groundwater elevation at GSP monitoring wells as utilized by the Farmers Water District and Fresno Management Areas A and B GSP regions.
F Monitoring Network Module
G PMA Module
PMA Implementation Updates Implementation Update Export (CSV) PMA Export (CSV)
| PMA ID | PMA Name | Lead GSA | Status | # Updates during WY |
|---|
