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The Lower Clear Creek Floodway Rehabilitation
Project is a multi-phased restoration project that will reverse
the severe negative impacts of gold mining, timber harvesting, road
building, upstream dams, and most significantly instream gravel
mining, which removed an estimated several hundred-thousand cubic
yards of gravel from the restoration sites in the 1970's and 1980's.
The effects of these human land uses can be seen in the form of
extensive channel incision down to the underlying clay hardpan,
an unconfined and poorly defined inflow channel, and extensive stranding
of both adult and juvenile anadramous fish.
The initial phases of the project targeted the most severe stranding
locations by filling in the largest instream gravel mining pits.
Functional floodplains were constructed in their place and revegetated
with native riparian vegetation. The latest phase relocated and
reconstructed the channel with clean spawning gravel. Large trees
and rootwads were installed to protect the new bank and provide
fish habitat. Future phases will return the creek to its historic
location at the downstream end of the project reach where it had
been diverted for past gravel mining operations. The material used
to fill the mining pits was obtained from an upstream borrow source
(Reading Bar) where the elevated floodplain rarely inundated. This
area was restored and revegetated once the excess material had been
removed.
The project is being implemented by the Western Shasta
Resource Conservation District on public lands managed by the Bureau
of Land Management. Insight and direction from cooperating government
agencies such as the BOR, CDFG, USFWS, NRCS, NMFS, and CRWQCB have
been utilized throughout the design and implementation process. The
majority of the funding for the project has been provided by the CAL-FED
Bay-Delta Program. Additional funding has also been provided by the
BOR and BLM. Funding for the project included costs for design, permitting,
construction, supervision, monitoring, reporting, and maintenance.
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