ITEM: |
INFORMATIONAL ITEM/STAFF REPORT |
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18. |
CARMEL RIVER FISHERY REPORT FOR JUNE 2024 |
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Meeting Date: |
July 15, 2024 |
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: Above average rainfall this spring kept river
flows well above the long-term average for this time of the year, with
comparable spring conditions observed in 1996, 2003 and 2005. Steelhead
migration conditions were adequate for both adult and juvenile fish in the main
stem, some tributaries have started to go intermittent.
To date, only four adult steelhead have been
captured in the Los Padres Dam fish trap and moved above the dam. Flows were
adequate to start annual Redd (steelhead nest) surveys on May 21. Surveys are
getting a very late start this season due to the high flows observed this
spring, causing these surveys to be conducted at the end of the migration
season and not at optimal timing for enumeration. Redd surveys were completed
up to the Page cabin (RiverMile 20) on 6/18/2024, a total of 27 steelhead
redds, 15 adults and 634 lamprey redds were observed. Fry (baby steelhead) were
observed along the stream banks in many different locations indicating that
steelhead had successfully hatched.
June’s streamflow at the Sleepy Hollow Weir gaging station ranged from 25 to 62 cfs (mean 43
cfs), while flows at the Highway 1 gage ranged from 26 to 71 cfs (mean
45).
There was no rainfall in June as recorded at the San Clemente
gauge. The total rainfall for Water Year (WY) 2024 (which started October 1,
2023) is 24.17 inches, or 115% of the long-term
year-to-date average of 21.05 inches.
FISH RESCUE: Staff conducted rescues
in three tributaries (Potrero, Hitchcock, and Cachagua Creeks) as they began to
dry back. All fish were released into
the Carmel River at the tributary’s confluence. As of the end of June, a total
of 1,187
fish have been rescued (1,040 YOY, 132 1+ year olds, and 15 mortalities).
CARMEL
RIVER LAGOON: In June, the lagoon’s Water Surface Elevation ranged
from approximately 3.4-11.1 feet (NGVD 1988) (see graph below).
Water quality depth-profiles were conducted at
five sites on June 24, 2024, while the lagoon mouth was open, water surface
elevation was 4.0 feet, and river inflow was 30 cfs. Steelhead migration conditions
were adequate but high salinity observations have reduced the amount of habitat
for juvenile fish. There is a salinity stratification layer at about 0.5 meters
depth, below this depth salinity increases sharply. Salinity levels ranged from 1-26 parts per
thousand (ppt), water temperatures ranged from 53-71 degrees Fahrenheit, and dissolved
oxygen (DO) levels ranged from 2.7-16.3 mg/l.
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