ITEM: |
INFORMATIONAL ITEM/STAFF REPORT |
||||
|
|||||
20. |
CARMEL RIVER FISHERY REPORT FOR FEBRUARY 2021 |
||||
|
|||||
Meeting Date: |
March 15, 2021 |
Budgeted: |
N/A |
||
|
|||||
From: |
David J. Stoldt, |
Program/ |
N/A |
||
|
General Manager |
Line Item No.: |
|
||
|
|
|
|||
Prepared By: |
Beverly Chaney |
Cost Estimate: |
N/A |
||
|
|||||
General Counsel Review: N/A |
|||||
Committee Recommendation: N/A |
|||||
CEQA Compliance: This
action does not constitute a project as defined by the California
Environmental Quality Act Guidelines Section 15378. |
|||||
AQUATIC HABITAT AND FLOW CONDITIONS: Following the only large storm to date of the
rainy season in late January, dry weather returned in February. By month’s end,
Los Padres Reservoir was barely spilling, and river flows had dropped to 30 cubic-feet-per-second
(cfs). Migration conditions for both
upstream adults and downstream juveniles degraded from excellent in early
February to poor by the end of the month.
January’s mean daily streamflow at the Sleepy Hollow Weir decreased from 143 to 30 cfs (monthly mean 55.0 cfs)
resulting in 3,060 acre-feet (AF) of runoff while the Highway 1 gage decreased
from 154 to 27 cfs (monthly mean 55 cfs) resulting in 3,060 AF of runoff.
There were 0.41 inches of rainfall in February as recorded at
the San Clemente gauge. The rainfall total for WY 2021 (which started on
October 1, 2020) is 9.85 inches, or 64% of the long-term year-to-date average
of 15.46 inches.
CARMEL RIVER LAGOON: The lagoon opened January 26, 2021. During
February, the lagoon water surface elevation (WSE) rose and fell several times
as the low river flow was insufficient to keep the sandbar open. The lagoon
filled twice before breaching (the second time in early March) raising the WSE from
approximately 3.5 to 11.8 feet and backwatering the river to the HW1 reach (North American Vertical Datum of
1988; NAVD 88) (See graph below).
Water quality depth-profiles were conducted at
five sites on February 19, 2021 while the lagoon mouth was closed with tidal overwash, water surface elevation was 5.5 feet, and river
inflow was 36 cfs. Steelhead rearing conditions were generally “good”. Salinity
ranged from 1 - 22 ppt, dissolved oxygen (DO) levels were variable ranging
from 5 – 11 mg/l, and water temperatures were cool, ranging from 50 - 56
degrees F.
RESISTANCE BOARD WEIR: As part of the District’s steelhead
life cycle monitoring program, FishBio Consulting
was hired to design and install a fish weir in the lower river to temporarily
trap migrating adult steelhead for tagging and measurement. The installation
was completed in January and after repairing minor damage to the weir from the
high flows was fully operational the first week of February as the adult migration
began.
The first fish were captured on February 3, 2021
and as of February 28th 50 adult, ocean-run steelhead had been captured, with
36 of those being PIT tagged. There was one recaptured fish that had been
tagged in 2019.
Carmel River Lagoon Plot:
U:\staff\Boardpacket\2021\20210315\Informational
Items\20\Item-20.docx