GSP Annual Report
1-003 BUTTE VALLEY
2023 (OCT. 2022 - SEP. 2023)
Single Annual Report
GSP Annual Report Information
Correspondences
Comments
03/27/2024 9:37 AM
2023 (OCT. 2022 - SEP. 2023)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
66,400
Water Use Sectors
400
0
63,000
3,000
0
0
0
B Groundwater Extraction Methods
Meters
0
Electrical Records
0
Land Use
0
Groundwater Model
63,000
Estimate
60-70 %
Butte Valley Integrated Hydrologic Model
Model results are estimated to have medium accuracy due to documented data gaps.
Other
3,400
Estimate
80-90 %
Population data from DWR (https://gis.water.ca.gov/app/bp-dashboard/final/) to estimate urban water demand. Wetland pumping estimated by the amount needed to flood and maintain about 2,000 acres.
Data source 2010 US Census for basin population. Estimate an average annual water use of 1 acre-foot per 3.5 persons. Wetland estimate from CDFW.
C Surface Water Supply
Total Surface Water Supply (AF)
0
Methods Used to Determine
None. All streams entering the groundwater basin had no functional stream gages in WY 2022 and thus surface water supply cannot be estimated.
Water Source Types
0
0
0
0
0
0
0
0
D Total Water Use
Total Water Use (AF)
66,400
Methods Used to Determine
Methods for groundwater use is the Butte Valley Integrated Hydrologic Model and an estimate based on the Census population in the groundwater basin. Managed wetland water use estimate supplied by CDFW. Applied surface water is a data gap in WY 2023 and an estimate cannot be determined. Applied water for native vegetation water use sector is a data gap.
Water Source Types
66,400
0
0
0
0
Water Use Sectors
400
0
63,000
3,000
0
0
0
E Change in Storage
Method used to calculate change in storage
The WY 2023 change in storage was calculated by the Butte Valley Integrated Hydrologic Model (BVIHM).
