GSP Annual Report
5-022.12 TULARE LAKE
2020 (OCT. 2019 - SEP. 2020)
Single Annual Report
GSP Annual Report Information Comments
04/01/2021 11:31 AM
2020 (OCT. 2019 - SEP. 2020)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
375,293
Water Use Sectors
27,118
0
339,474
0
0
0
8,701
Rural Domestic
B Groundwater Extraction Methods
Meters
136,606
Direct
0-5 %
Total data available from meters
Estimated
Electrical Records
0
Land Use
202,868
Estimate
10-20 %
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
0
C Surface Water Supply
Total Surface Water Supply (AF)
315,262
Methods Used to Determine
Measured volumes using weirs, flumes, and flow meters.
Water Source Types
0
45,190
0
212,594
57,478
0
0
0
D Total Water Use
Total Water Use (AF)
774,527
Methods Used to Determine
Sum of surface water deliveries, groundwater extraction, and effective precipitation.
Water Source Types
375,293
315,262
0
0
0
Water Use Sectors
27,118
0
738,708
0
0
0
8,701
Rural Domestic
E Change in Storage
Method used to calculate change in storage
Groundwater elevation contours interpolated from spring and fall measurement events were converted to elevation surfaces. ESRI ArcGIS software was used to calculate the change in aquifer volume between water years from these elevation surfaces for both the A and B zones, which collectively form the unconfined principal aquifer. These initial volume changes were multiplied by specific yields of 7% for the A zone and 2% for the B zone to obtain actual water volume changes within the aquifer for the water year. Storage changes for the confined aquifer (C zone) could not be calculated to to a lack of InSAR data for the water year.
