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ITEM: |
INFORMATIONAL
ITEM/STAFF REPORT |
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17. |
MONTHLY WATER SUPPLY AND |
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Meeting Date: |
September 15, 2025
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Budgeted:
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N/A
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From: |
David J. Stoldt, |
Program/ |
N/A |
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General Manager |
Line Item No.: |
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Prepared By: |
Jonathan Lear |
Cost Estimate: |
N/A |
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General Counsel
Review: N/A
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Committee
Recommendation: N/A
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CEQA Compliance: Exempt
from environmental review per SWRCB Order Nos. 95-10 and 2016-0016, and the
Seaside Basin Groundwater Basin adjudication decision, as amended and Section
15268 of the California Environmental Quality Act (CEQA) Guidelines, as a
ministerial project; Exempt from Section 15307, Actions by Regulatory
Agencies for Protection of Natural Resources. |
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Exhibit 17-A shows the water supply status for the Monterey Peninsula Water Resources System (MPWRS) as of September 1, 2025. This system includes the surface water resources in the Carmel River Basin, the groundwater resources in the Carmel Valley Alluvial Aquifer and the Seaside Groundwater Basin. Exhibit 17-A is for Water Year (WY) 2025 and focuses on three factors: rainfall, runoff, and storage. The rainfall and Streamflow values are based on measurements in the upper Carmel River Basin at Sleepy Hollow Weir.
Water Supply Status: Rainfall
through August 2025 totaled 0.00 inches and
brings the cumulative rainfall total for WY 2025 to 16.68 inches, which is 79%
of the long-term average through August. Estimated unimpaired runoff through August totaled 405 acre-feet (AF)
and brings the cumulative runoff total for WY 2025 to 33,916 AF, which is 49% of the long-term average through August.
Usable storage for the MRWPRS was 27,130
acre-feet, which is 94% of
average through August, and equates
to 82% of system capacity.
Production Compliance: Under State Water Resources Control Board (SWRCB) Cease and Desist Order No. 2016-0016 (CDO), California American Water (Cal-Am) is allowed to produce no more than 3,376 AF of water from the Carmel River in WY 2025. Through August, using the CDO accounting method, Cal-Am has produced 3,023 AF from the Carmel River (excluding 182 AF of Table 13 and 83 AF of Mal Paso.) In addition, under the Seaside Basin Decision, Cal-Am is allowed to produce 1,474 AF of water from the Coastal Subareas and 0 AF from the Laguna Seca Subarea of the Seaside Basin in WY 2025. Through August, Cal-Am has produced 1,395 AF from the Seaside Groundwater Basin. Through August, 716 AF of Carmel River Basin groundwater have been diverted for Seaside Basin injection; 0 AF have been recovered for customer use, 182 AF have been diverted under Table 13 water rights, and 3,435 AF of Pure Water Monterey recovered. Cal-Am has produced 8,274 AF for customer use from all sources through August. Exhibit 17-B shows production by source. Some of the values in this report may be revised in the future as Cal-Am finalizes their production values and monitoring data.
EXHIBITS
17-A Water Supply Status: Sept 1, 2025
17-B Monthly Cal-Am
production by source: WY 2025
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Items\17\Item-17.docx