ITEM: |
INFORMATIONAL
ITEM/STAFF REPORT |
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23. |
CARMEL RIVER FISHERY REPORT FOR SEPTEMBER
2020 |
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Meeting Date: |
October 19, 2020 |
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: |
Beverly Chaney |
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: Carmel
River flows held relatively steady in September, providing fair rearing
conditions for steelhead young-of-the-year (YOY) in the mid to upper watershed
and poor conditions in the lower valley.
September’s mean daily streamflow at the Sleepy
Hollow Weir ranged from 6.6 to 8.6 cubic-feet-per-second (cfs) (monthly mean 7.8 cfs)
resulting in 449 acre-feet (AF) of runoff. Mean daily streamflow at the Highway
1 gage is still trickling at 0.07 to 0.35 cfs (monthly mean 0.16 cfs)
resulting in 9 acre-feet (AF) of runoff.
There were 0.00 inches of rainfall in September
as recorded at the San Clemente gauge. The rainfall total for WY 2020
(which started on October 1, 2019) is 17.57 inches, or 82.8% of the long-term
year-to-date average of 21.22 inches.
CARMEL RIVER
LAGOON: The lagoon mouth closed
for the summer on June 16, 2020. During September, the lagoon water surface
elevation (WSE) ranged from approximately 6 to 8 feet as seawater overtopped
the sand berm late in the month (North American Vertical Datum of 1988; NAVD 88) (See graph below).
Water quality
depth-profiles were conducted at five sites on September 28, 2020 while the
lagoon mouth was closed, water surface elevation was 7.75 feet, and river
inflow was <0.1 cfs. Steelhead rearing conditions were generally “fair”. Salinity
ranged from 8 - 27 ppt, dissolved oxygen (DO) levels were variable ranging
from 0.6 – 13 mg/l, and water temperatures were slightly cooler, ranging from 59
- 70 degrees F.
SLEEPY HOLLOW STEELHEAD
REARING FACILITY: Facility
upgrades were completed in mid-July and the first rescued fish were brought to
the facility on July 27, 2020. By the end of September, 5,098 fish had
been placed in the rearing channel including: 123 large fish (age 1+ years
[1+]), 669 medium sized 1+ fish, and 4,306 young-of-the-year (YOY) fish.
Overall facility survival is currently 68%. Very hot weather and warm river
water contributed to the mortalities.
Carmel River Lagoon Plot:
U:\staff\Boardpacket\2020\20201019\InformationalItems\23\Item-23.docx