GSP Annual Report
5-021.64 NORTH AMERICAN
2023 (OCT. 2022 - SEP. 2023)
Single Annual Report
GSP Annual Report Information
Correspondences
Comments
03/29/2024 11:49 AM
2023 (OCT. 2022 - SEP. 2023)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
244,800
Water Use Sectors
42,100
18,100
181,100
0
0
0
3,500
Groundwater remediation pumping
B Groundwater Extraction Methods
Meters
63,700
Direct
90-100 %
Meters are combination of propeller and magnetic meters.
Meters are calibrated at regular intervals per meter specifications to maintain accuracy at about 5% or better.
Electrical Records
0
Land Use
0
Groundwater Model
181,100
Estimate
Other
The CoSANA model is a quasi-three-dimensional finite element model developed using the Integrated Water Flow Model 2015 software package developed by DWR. The model is calibrated over a hydrologic period from WY 1994 through WY 2018 by comparing simulated evapotranspiration, groundwater levels, and streamflow records with historical observed records.
The CoSANA model is used to estimate agricultural and other rural groundwater extractions. The estimates provided by the CoSANA model have a qualitative accuracy medium to high. This equates to about an 80% level of accuracy for agricultural extractions.
Other
0
C Surface Water Supply
Total Surface Water Supply (AF)
329,800
Methods Used to Determine
Meters and weirs, estimated
Water Source Types
0
0
0
323,800
0
6,000
0
0
D Total Water Use
Total Water Use (AF)
576,400
Methods Used to Determine
Direct through meters and weirs, estimated by groundwater model
Water Source Types
241,300
325,600
6,000
0
3,500
Groundwater remediation pumping
Water Use Sectors
128,700
55,200
387,200
0
1,800
0
3,500
Groundwater remediation pumping
E Change in Storage
Method used to calculate change in storage
The change in groundwater storage for Water Year 2023 was estimated for the entire Subbasin using the calibrated CoSANA groundwater model.
