ITEM: |
INFORMATIONAL ITEMS/STAFF REPORT |
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19. |
CARMEL RIVER FISHERY REPORT FOR JULY 2025 |
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Meeting Date: |
August 18, 2025 |
Budgeted: |
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: |
Cory Hamilton |
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: This
action does not constitute a project as defined by the California
Environmental Quality Act Guidelines Section 15378. |
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AQUATIC HABITAT AND FLOW CONDITIONS: During July, river flows
continuously decreased throughout the entire month creating stranding conditions
in parts of the lower river. Tributaries
of the Carmel River continued to dry up and the mainstem became intermittent
around the Palo Corona area. The lagoon mouth was closed for the entire month (see
graphic below). Rearing conditions were adequate
in the upper river but are continuing to degrade in the lower river as flows continue
to decrease. Los Padres Reservoir stopped spilling on June 13, 2025 and we began using storage to meet flow
requirements. The water surface
elevation at the end of the month was 1033.59 feet. Flow out of the reservoir
at the end of the month was 6.7 cfs, while the
incoming flow into the reservoir was 2.7 cfs.
July’s streamflow at the Sleepy Hollow Weir gaging station ranged from 7.7 to 9.9 cfs (mean 8.4 cfs), while
flows at the Highway 1 gage ranged from 0.56 to 3.6 cfs
(mean 1.7 cfs).
There was no measurable rainfall in July as
recorded at the San Clemente gauge. The total rainfall for Water Year (WY)
2025 (which started October 1, 2024) is 16.68 inches, which is 79% of normal to date.
FISH RESCUE: On May 16, 2025, District staff started fish rescues due to
drying conditions in the tributaries. On
June 27, 2025, staff started conducting fish rescues in the mainstem Carmel
River in the Crossroads area to the Rancho San Carlos Bridge area, due to
degrading conditions. As of the end of July, a total of 5,185
fish have been rescued (4,562 YOY, 606 1+ year olds, 1
adult kelt and 16 mortalities).
CARMEL RIVER LAGOON: In July, the lagoon’s Water Surface Elevation
(WSE) ranged from approximately 9.3 to 7.4 feet (NGVD 1988) (see graph below). Water
quality depth-profiles were conducted at five sites on July 15, 2025, while the
lagoon mouth was closed, water surface elevation was 8.5 feet at the time of
sampling, and river inflow was approximately 1.6 cfs.
The north arm of the lagoon remains
dry. Lagoon stratification was observed
at about 2 meters depth only in the south arm. Salinity levels ranged from 0.7-20.8
parts per thousand (ppt), throughout the lagoon. Water temperatures ranged from 69-78 degrees
Fahrenheit, and dissolved oxygen (DO) levels ranged from 4.3 -13.6 mg/l.
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