18 HYDRO REVIEW / July 2017 www.hydroworld.com
using a drag conveyor to pass fsh downstream.
Te system may ofer continuous and rapid
transport and may manage pressure within the
chambers, minimizing the trauma to the fsh.
Other research Reclamation is conducting
includes development of an environmental
impact statement for the Shasta Dam fsh
passage evaluation project, which evaluates the
near-term actions of reintroducing federally
listed endangered winter-run chinook salmon
and potentially spring-run chinook salmon to
tributaries above Shasta Dam. Te near-term
goal is to increase the geographic distribution
and abundance of the fsh and the long-term
goal is to increase abundance, productivity,
and spatial distribution, as well as improve
the life history, health and genetic diversity
of the species.
Reclamation released a draft pilot imple-
mentation plan for this dam, which impounds
water for a 663-MW hydro facility, in 2016.
Tis plan provided a general overview of win-
ter-run chinook reintroduction to historical
habitats in the study area. Reclamation prepared
a preliminary draft environmental assessment in
2017 as part of the planning process to evaluate
and disclose potential environmental efects
association with the fsh passage evaluation
projects’ implementation of a pilot study to
assess the feasibility of the reintroduction of
chinook in tributaries above Shasta Lake.
Te federal agency also is conducting
work regarding adult fsh passage, such as
the proposed Fremont Weir Adult Fish
Passage Modifcation Project. Tis project is
intended to improve fsh passage by modifying
an existing fsh ladder and improving fsh
passage within the channel both upstream and
downstream of the Fremont Weir.
Te weir is located in the northern portion
of the Yolo Bypass, which provides valuable
rearing habitat for downstream-migrating
juvenile salmon while also providing a fsh
migration corridor for adult anadromous
fsh. Reclamation says structures within the
Yolo Bypass have delayed and prevented
adult special status fsh species — such as
chinook, steelhead and green sturgeon — from
migrating upstream through the bypass and
returning to the Sacramento River.
In addition, Reclamation, PacifCorp and
the National Fish and Wildlife Foundation
announced in early May they were seeking
applications for funding to implement coho
habitat restoration projects within the Klamath
River and its tributaries downstream of
PacifCorp’s Iron Gate Dam, which impounds
water for an 18-MW hydro powerhouse.
Grants of $1.1 million will be available
during 2017, funded by Reclamation’s
Klamath River Coho Habitat Restoration
Program ($645,000) and PacifCorp’s Klamath
River Coho Enhancement Fund ($450,000).
Successful proposals will provide access to
cold water habitat, create or enhance instream
habitat, remove barriers or otherwise improve
access, or provide water conservation.
Reclamation operates 492 dams that
impound 338 lakes, as well as 53 hydro plants.
Fish passage at Corps facilities
Te U.S. Army Corps of Engineers also is
performing signifcant work to improve fsh
passage at its dams and hydropower projects.
One situation requiring signifcant work is
the sea lion “problem” at the 1,242-MW