ITEM: |
INFORMATIONAL
ITEMS/STAFF REPORTS |
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18. |
CARMEL RIVER FISHERY REPORT FOR AUGUST
2014 |
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Meeting Date: |
September 15, 2014 |
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: N/A |
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AQUATIC HABITAT AND FLOW
CONDITIONS: During August
2014, Carmel River streamflow at the MPWMD Highway 1 gage (HW 1) was 0
cubic-feet per second (cfs). As of August 31, the wetted front remained
near Robinson Canyon Road Bridge (River Mile, [RM], 8.46). An additional 1.5 miles of stream was dry or
intermittent in the reach between Boronda Road Bridge (RM 12.7) and Rosie’s
Bridge (Esquiline Road, RM 14.5).
Mean daily streamflow in
August at the District’s Carmel River at Sleepy Hollow Weir gaging station
ranged from 0.89 to 3.9 cfs, with a mean monthly flow of 1.93 cfs. During
August, 0.0 inches of rainfall were recorded at California American Water’s
(CAW) San Clemente Dam (SCD). The rainfall total for WY 2014 (which
started on October 1, 2013) is 10.42 inches, or 49% of the long-term annual
average (to date) of 21.15 inches.
CARMEL RIVER
LAGOON: In August 2014, the
lagoon’s water-surface elevation (WSE) remained relatively steady between 2.4 -
2.9 feet above mean sea level (see graph below). Surface inflow to
the lagoon ceased on May 24, 2013.
Water quality profiles
were conducted in late August at five sites.
Conditions are generally poor for steelhead rearing. Most of the lagoon
is very shallow with warm water temperatures ranging from 66 - 73 degrees F,
dissolved oxygen (DO) levels ranged from 0.3 – 15.5 mg/l, and salinity levels
remained low at 1 - 4 ppt.
LOWER RIVER STEELHEAD
RESCUES: Staff began steelhead smolt and juvenile rescues on March 3, 2014, the
earliest rescue start since 1991. By
the end of August, a total of 3,235 fish had been rescued, including: 873
smolts, 2,013 non-smolted juveniles, 325 young-of-year (YOY), and six
adults. The YOY fish are progeny from
non-sea run spawning adults – possibly the large fish released from the Sleepy
Hollow Steelhead Rearing Facility last fall.
The smolts and adults were acclimated to seawater then released into the
ocean at Stewart’s Cove, near the Carmel River mouth. The juveniles and YOY were transported
farther upstream and released.
SPAWNING GRAVEL
ENHANCEMENT PROJECT AT LOS PADRES:
In 2013, Staff received a $170,000 grant from the California Department
of Fish and Wildlife (CDFW) Fisheries Restoration Grant Program (FRGP) for the
purchase and placement of spawning gravels below Los Padres Dam. Natural gravel is now trapped behind the dam
causing the substrate downstream to become too coarse for adult steelhead to
spawn in. With the addition of up to
1,500 tons of 1.5 – 4 inch gravel, staff hopes to increase available spawning
habitat through the Cachagua area by 50% as the rock migrates downstream each
winter. Permitting was completed in July
2014 and gravel deliveries began on August 12th. Staff plans to begin gravel placement in late
September and October 2014.
This year’s project continues the 20-year spawning gravel enhancement
program started by the District in 1993.
With the completion of the this project, the District will have placed
approximately 4,900 tons of gravel between Los Padres Dam and Sleepy Hollow,
downstream of San Clemente Dam.
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