GSP Annual Report
5-021.69 WYANDOTTE CREEK
2025 (OCT. 2024 - SEP. 2025)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
40,800
Water Use Sectors
1,800
0
38,100
0
0
0
900
Rural Residential
B Groundwater Extraction Methods
Meters
1,800
Direct
5-10 %
Metered Municipal Wells
Metered connection maintained by California Water Service and Thermalito Water and Sewer District.
Electrical Records
0
Land Use
38,100
Estimate
20-30 %
Land use estimates were derived from crop mapping and CropScape survey results
Typical uncertainty for water balance calculation
Groundwater Model
0
Other
900
Estimate
10-20 %
Rural residential groundwater extraction is estimated based on California Water Service Company's 2020 Urban Water Management Plan 2020 usage of an average per capita water use of 181 gallons per capita per day. Population data from the 2020 census was coupled with water district boundary data to identify total population not serviced by municipal supplies
Uncertainties are from population estimates and gallon per capita per day estimates
C Surface Water Supply
Total Surface Water Supply (AF)
21,000
Methods Used to Determine
Diversions for local supplies are estimated based on historic State Water Resource Control Board eWRIMS (Electronic Water Rights Information Management System) data for total diversions. Surface water delivery estimates are based on historic deliveries in the area that have occurred in dry and critical years.
Water Source Types
0
0
0
21,000
0
0
0
0
D Total Water Use
Total Water Use (AF)
61,800
Methods Used to Determine
Methods used are a
combination of
estimates based on
land use and
population/ per capita
water use, metered
municipal water use,
and estimates based
on historic water rights
data for dry and
critical years
Water Source Types
40,800
21,000
0
0
0
Water Use Sectors
7,500
0
53,400
0
0
0
900
Rural Residential
E Change in Storage
Method used to calculate change in storage
Theissen Polygon Method
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 |
|---|---|---|---|---|
| 5-021.69_PMA_1 | 5.2.4.1 Residential Water Conservation | Wyandotte Creek GSA | Ongoing | 1 |
| 5-021.69_PMA_2 | 5.2.4.2 Agricultural Irrigation Efficiency | Wyandotte Creek GSA | Planning | 1 |
| 5-021.69_PMA_3 | 5.2.4.2 Flood MAR | Wyandotte Creek GSA | Planning | 1 |
| 5-021.69_PMA_4 | 5.2.4.4 Oroville Wildlife Area Robinson's Riffle Project | Wyandotte Creek GSA | Ongoing | 1 |
| 5-021.69_PMA_5 | 5.2.4.5 Streamflow Augmentation | Wyandotte Creek GSA | Planning | 1 |
| 5-021.69_PMA_6 | 5.2.4.6 TWSD Water Treatment Plant Capacity Upgrade | Wyandotte Creek GSA | Completed - Benefits Fully Realized | 1 |
| 5-021.69_PMA_7 | 5.2.4.7 Water Loss Monitoring | Wyandotte Creek GSA | No Update | 1 |
| 5-021.69_PMA_8 | 5.2.4.8 Palermo Clean Water Consolidation Project | Wyandotte Creek GSA | Ongoing | 1 |
| 5-021.69_PMA_9 | 5.2.5.1 Intra-Basin Water Transfer | Wyandotte Creek GSA | Planning | 1 |
| 5-021.69_PMA_10 | 5.2.5.2 Agricultural Surface Water Supplies | Wyandotte Creek GSA | Planning | 1 |
| 5-021.69_PMA_11 | 5.2.5.3 Well Upgrades | Wyandotte Creek GSA | No Update | 1 |
| 5-021.69_PMA_12 | 5.2.5.4 Fuel Management for Watershed Health | Wyandotte Creek GSA | No Update | 1 |
| 5-021.69_PMA_13 | 5.2.5.5 Removal of Invasive Species | Wyandotte Creek GSA | Ongoing | 1 |
| 5-021.69_PMA_14 | 5.2.6.1 Recharge Well (Injection Well) | Wyandotte Creek GSA | No Update | 1 |
| 5-021.69_PMA_15 | 5.2.6.2 Extended Orchard Replacement | Wyandotte Creek GSA | Planning | 1 |
| 5-021.69_PMA_16 | General Plans | Wyandotte Creek GSA | Ongoing | 1 |
| 5-021.69_PMA_17 | Domestic Well Mitigation | Wyandotte Creek GSA | No Update | 1 |
| 5-021.69_PMA_18 | Well Permitting Ordinance | Wyandotte Creek GSA | Ongoing | 1 |
| 5-021.69_PMA_19 | Landscape Ordinance | Wyandotte Creek GSA | No Update | 1 |
| 5-021.69_PMA_20 | Expansion of Water Purveyors' Service Area | Wyandotte Creek GSA | Ongoing | 1 |
