By John Goraj
I wanted to give you a quick update on the initial “trout scout” that Arroyo Seco Foundation and volunteers did last week at Switzer’s Falls on Feb. 11. Please keep in mind that this first trip was not meant to be a technical, scientific survey, but rather to get a general idea of the habitat conditions for native trout and stream ecology/hydrology at the moment. But, the next few trips will become more technical as time goes on, employing GIS, DNA extraction and using snorkeling and wetsuit gear to look for trout.
We walked about two miles down the trail, stopping several times along the way to survey conditions and look for evidence of life. One thing is for certain — the Arroyo Seco has not flowed this turbulently in several years! I would guess that the streamflow was close to 50-75 cubic feet per second. It was so wonderful to see. We had to jump over the stream on rocks and downed logs several times along the way. There were several three-to-four-foot-deep pools as we made our way through the canyon. Many of these pools possessed some critical habitat features needed for rainbow trout: clean gravel beds; in-stream woody debris and boulders that create additional pools, turbulent, cool water and overhanging vegetation creating cover. Additionally, the strong root systems of white alder and cottonwood trees that line the stream have established solid banks, which is another key component of healthy mountain streams needed to sustain trout species.
Although we did not see any fish this time, the most salient observation I can make right now is that I do believe some trout are living up there. All or most of the necessary habitat conditions are present and I think it’s only a matter of time before we see some fish.
The next survey will focus on going deeper into the Bear Canyon area. I have heard from several anglers that they have seen trout up here prior to the 2009 Station Fire. The combined effects of the fire and the recent five-year drought had made seeing trout in this area improbable. But I don’t think this is case anymore. The Switzer Falls/Bear Canyon area is recovering quickly and now with all the rain and snowmelt, conditions have changed for the better.
Thank you for your interest as always and feel free to email me with any questions or comments at: email@example.com.
Friends of the Los Angeles River (FoLAR)
Sepulveda Basin Fish Survey
Tuesday, Nov. 22
CALL FOR VOLUNTEERS
8 a.m., arrive at meeting site – The park gate on Burbank Boulevard, just west of Woodley Avenue. This is the kayak loading site and it’s roughly a quarter-mile upstream from Sepulveda Dam.
8:30 a.m., William Preston Bowling will greet everyone with liability waivers. Volunteers signed in, put on waders/sunscreen, and took the fishing gear and buckets down to the river at site 1 and Anglers bring their own gear and valid fishing license.
We are collecting fish to observe and throw back, showing all your catch to biologists once caught, they will decide what species to keep for toxicity study.
This will be the second outing of the third “Los Angeles River Fish Studies” created by FoLAR. This study is in Partnership with Stillwater Sciences and the Resource Conservation District of the Santa Monica Mountains.
Check out FoLAR’s past studies here:
William Preston Bowling
FOLAR (310) 428-5085
Note: This is from Pasadena Casting Club, but has broad appeal to the fly fishing community. — Jim Burns
Dear PCC members,
As you probably know, Hot Creek has essentially crashed over the last year or more: few fish, small fish. Recent DFW electroshocking bears this out.
Dr. Mark Drew, eastern Sierra CalTrout Headwaters project director, told us at our September meeting that a perfect storm of factors is probably responsible. He listed the opening of Hot Creek to winter fishing without the promised Department of Fish and Wildlife annual health monitoring, the prolonged drought and the concomitant 50 percent decreased in the flow of the spring that feeds the stream as probable causes.
This year for the first time in memory, Mammoth Creek dried up briefly.
DFW has done a quick study and finds no issues with water quality or food availability. Under pressure from the community that would suffer economic loss if the fishery does not recover, they have decided to stock HC with diploid rainbow trout, which can mature and reproduce. CalTrout and DFW are asking for our help. Here are the details.
Monday, Sept. 26 through Friday, Sept. 30: help electroshock Mammoth Creek.
Thursday, Oct. 6: help with the placement of 6,000 fish in Hot Creek. (They plan to place 12,000 per year for several years, and do electroshock surveys to see how the spawn is doing.)
If you can participate in either or part of these scheduled tasks, please contact Dr. Mark Drew at firstname.lastname@example.org
or call him at (760) 709-1492. He will provide snacks and lunch.
Also please let me know if you are participating.
If you are free to help fish Willow Street in Long Beach on Wednesday from 6 a.m. until 10 a.m., please let William Preston Bowling at FoLAR know by RSVPing email@example.com. He’ll fill you in on the particulars, including where to meet.