
Central Valley Steelhead
By Dougald Scott
There appears to be a concerted effort to remove central valley steelhead from the protections of the Endangered Species Act. The story just gets more and more bizarre. Recall from my previous columns that California DFG sent a letter to National Marine Fisheries Service (NMFS under the Department of Commerce) recommending that Sacramento Valley steelhead be delisted from their current "threatened" status under the Endangered Species Act. They based this recommendation on population estimates of resident rainbow trout, not steelhead, in the Sacramento River drainages below dams. These population estimates were scientifically flawed because they were made using estimates of rainbow trout densities in rivers above dams where no steelhead occur.

In the past, NMFS has managed the steelhead form of O. mykiss, while Fish and Wildlife Service (Department of Interior) has managed the resident rainbow trout form, where steelhead do not occur. Now it appears that the FWS is claiming jurisdiction over resident rainbow trout in the steelhead habitat managed by NMFS.
Since steelhead and resident rainbow trout are genetically indistinguishable forms of O. mykiss, it appears that both forms would be delisted if it were up to FWS. In a letter to NMFS, the Director of FWS indicates that he does not see a need for the listing of O. mykiss under the Endangered Species Act. He then states that NMFS does not have the authority to list resident rainbow trout under the ESA even if they wanted to.
It seems like DFG and FWS are singing from the same hymn book: de-list Central Valley steelhead based on the abundance of resident rainbow trout. What really troubles me is that the effort is clearly not based on scientific data. I suspect that the motivation for delisting is based on making it easier to extract more water from our rivers.
Young coho salmon found in Davenport's Laguna Creek.
Fisheries scientists surveying Laguna Creek, just north of Santa Cruz, found 62 young coho salmon. The age of the young salmon suggests that spawning occurred both last year and this year. According to the scientists, it is the first time coho spawning has been documented this far south, and is the southernmost stream where spawning has occurred recently in the United States.
The research was part of a three-year project backed by the Santa Cruz Resource Conservation District, which is partnering with state, federal and local researchers to examine the overall health of lagoons at Scott, Laguna, San Vincente, Soquel and Aptos creeks along with the San Lorenzo River.