GSP Annual Report
3-049 MONTECITO
2024 (OCT. 2023 - SEP. 2024)
Single Annual Report
GSP Annual Report Information
Correspondences
Comments
03/20/2025 4:31 PM
2024 (OCT. 2023 - SEP. 2024)
Single Annual Report
A Groundwater Extraction
Total Groundwater Extractions (AF)
943
Water Use Sectors
123
0
0
0
0
0
820
approx. 161 AF extracted by water companies within the Basin; approx. 659 AF extracted by private well operators that primarily use groundwater for landscape irrigation.
B Groundwater Extraction Methods
Meters
271
Direct
90-100 %
MWD operates a network of municipal extraction wells and maintains meters on each well. In addition, MWD maintains meters on a subset of privately owned and operated wells within the Basin.
Regular maintenance and calibration
Electrical Records
0
Land Use
0
Groundwater Model
0
Other
672
Estimate
70-80 %
In 2022, to better characterize groundwater usage by private well owners, MWD initiated a water use study in which they developed detailed water budgets for each parcel within their service area. The water budgets were based on high-resolution imagery of irrigable acreage, land use/cropping, average per capita demands, and metered MWD water deliveries. Using a three-year average of the difference between MWD-deliveries and the individual parcel budget, MWD developed estimates of average annual groundwater usage by private owners in the Basin. To adjust for climatological effects, the average annual groundwater usage was scaled by evapotranspiration measurements collected by CIMIS in nearby in Santa Barbara.
Estimated based on comparison between individual parcel-budget estimates and recently metered wells.
C Surface Water Supply
Total Surface Water Supply (AF)
3,615
Methods Used to Determine
Surface water deliveries are metered by MWD.
Water Source Types
0
0
0
2,220
0
0
0
1,395
Delivery of in-kind desalinated water via water supply agreement between Montecito Water District and the City of Santa Barbara
D Total Water Use
Total Water Use (AF)
4,310
Methods Used to Determine
Metered deliveries of surface water, in-kind water delivered under the existing water supply agreement with the City of Santa Barbara, and municipal groundwater extractions. Groundwater extractions from private well owners largely estimated.
Water Source Types
943
2,220
0
0
1,395
Delivery of in-kind desalinated water via water supply agreement between Montecito Water District and the City of Santa Barbara
Water Use Sectors
3,490
0
0
0
0
0
820
Domestic use (approx. 161 AF; groundwater extracted by water companies within the Basin); Primarily Landscape Irrigation (approx. 659 AF; groundwater extracted by private well operators)
E Change in Storage
Method used to calculate change in storage
Water year 2024 change in groundwater in storage within the Montecito Groundwater Basin was calculated using the Montecito Basin Numerical Model, a coupled watershed (PRMS-IV) and numerical groundwater flow (MODFLOW) model developed for the Montecito Groundwater Basin.
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 |
|---|
