GSP Annual Report
4-004.07 SANTA CLARA RIVER VALLEY EAST
2021 (OCT. 2020 - SEP. 2021)
Single Annual Report
GSP Annual Report Information Comments
03/31/2022 2:36 PM
2021 (OCT. 2020 - SEP. 2021)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
35,824
Water Use Sectors
24,752
0
7,610
0
0
0
3,462
Rural domestic use was estimated at 500 AF. A small public water system (non-urban) recorded use of 1,431 AF. Golf courses used 1,048 AF. An additional 483 AF was used for groundwater quality remediation pumping.
B Groundwater Extraction Methods
Meters
35,324
Direct
Other
Municipal groundwater extraction is metered by SCV Water and the Los Angeles County Department of Waterworks District 36. Non-municipal groundwater extraction is metered by a small public water system, golf courses, agricultural users, and the Whittaker-Bermite Contaminant Treatment/Extraction System.
The level of accuracy was rated on a qualitative scale of low, medium, and high. The accuracy of most metered data was considered high. The accuracy of metered data for golf courses and agriculture was rated medium and low, respectively, for this water year only, because pumping volumes for January 2021 through September 2021 were not yet available at the time of preparation of the annual report.
Electrical Records
0
Land Use
0
Groundwater Model
500
Estimate
Other
Rural domestic groundwater extractions are based on volumes cited in the model development report and the water budget analysis for the GSP.
The accuracy level of the rural domestic groundwater extractions is low to medium because direct data from small domestic pumpers was not available.
Other
0
C Surface Water Supply
Total Surface Water Supply (AF)
46,758
Methods Used to Determine
Imported surface water and recycled water are metered.
Water Source Types
0
35,877
0
0
10,415
466
0
0
D Total Water Use
Total Water Use (AF)
85,582
Methods Used to Determine
All water sources and water use sectors are metered, except for the rural domestic water use sector. Some groundwater users (golf courses and agriculture) are metered but data was not yet available for the full water year, so volumes for the 2021 water year were estimated for these water use sectors.
Water Source Types
35,824
46,292
466
0
0
Water Use Sectors
71,510
0
7,610
0
0
0
3,462
Rural domestic use was estimated at 500 AF. A small public water system (non-urban) recorded use of 1,431 AF. Golf courses used 1,048 AF. An additional 483 AF was used for groundwater quality remediation pumping.
E Change in Storage
Method used to calculate change in storage
Calculations of changes in storage were made using the regional groundwater flow model tool.
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 |
|---|---|---|---|---|
| 4-004.07_PMA_3 | Promoting best water use practices | Santa Clarita Valley GSA | 0 | |
| 4-004.07_PMA_2 | Monitoring, reporting, and outreach | Santa Clarita Valley GSA | 0 | |
| 4-004.07_PMA_1 | Addressing Data Gaps | Santa Clarita Valley GSA | 0 | |
| 4-004.07_PMA_4 | Actions if minimum thresholds are reached or undesirable results confirmed | Santa Clarita Valley GSA | 0 | |
| 4-004.07_PMA_5 | Actions if Groundwater Dependent Ecosystem (GDE) triggers are reached | Santa Clarita Valley GSA | 0 |
