GSP Annual Report
5-022.12 TULARE LAKE
2022 (OCT. 2021 - SEP. 2022)
Single Annual Report
GSP Annual Report Information Comments
03/31/2023 3:50 PM
2022 (OCT. 2021 - SEP. 2022)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
549,066
Water Use Sectors
24,160
0
516,716
0
0
0
8,190
Rural Domestic
B Groundwater Extraction Methods
Meters
24,160
Direct
0-5 %
Total data available from meters
Estimated
Electrical Records
0
Land Use
516,716
Estimate
10-20 %
Ag Pumping - Step 1: Determine Cropping Pattern; Step 2: Determine total crop demand (Total Crop Demand = Annual Crop Acreage * Annual Crop ETc); Step 3: Adjust for effective precipitation and irrigation efficiency [Farm Demand = (Total Crop Demand - Effective Precipitation) / Irrigation Efficiency]; Step 4: Calculate Un-met Demand (Un-met Demand = Farm Demand - Surface Water Deliveries)
Crop ET estimated from model. Outside of Agricultural lands estimated with best available data.
Groundwater Model
0
Other
8,190
Estimate
10-20 %
Other - Step 1: Find rural population for current year; Step 2: Multiply Rural Pop by 179 gal per capita (Assumed value from Public Policy Institute of California's Water and the Future of the San Joaquin Valley February 2019 )
Population pulled from Census Bureau; Per capita volume uses estimate made from 2017 drought period
C Surface Water Supply
Total Surface Water Supply (AF)
202,776
Methods Used to Determine
Measured volumes using weirs, flumes, and flow meters.
Water Source Types
0
21,010
0
113,117
68,649
0
0
0
D Total Water Use
Total Water Use (AF)
851,315
Methods Used to Determine
Sum of surface water deliveries, groundwater extraction, and effective precipitation.
Water Source Types
549,066
204,458
0
0
0
Water Use Sectors
24,160
0
818,965
0
0
0
8,190
Rural Domestic
E Change in Storage
Method used to calculate change in storage
Total subsidence was set equal to subsidence determined from ground elevation change. The volume difference between InSAR raster datasets from Spring 2021 to Spring 2022 was found using ESRI CutFill tool in ArcMap. The storage change from InSAR was found to be -115759. Storage Change in the A and B zone storage change was found using kriged water surface elevation data rasters from spring 2021 to spring 2022 using the same ESRI cutfill tool in ArcMap. The Czone storage change was found by subtraction: Czone = Total - (Azone+ Bzone storage change).
