Our new Biological Assessment is out - Klamath Basin Crisis

Klamath Project Operations Biological Assessment
Coho Salmon: Effects of the Proposed Action on Coho Salmon
Table 3-23. Qualitative summary of the effects of the Proposed Action by Population Group.
Factors to be
considered in
Effects of the Proposed Action by Population Group
assessing the
impacts of the
Proposed
Lower Klamath Middle Klamath River Populations Upper Klamath River Populations
Action on coho
salmon.
Effects River Populations
Water Quantity
and Timing
Reduce rearing
habitat
Inhibit upstream
and downstream
passage
Increase water
temperatures
Minimal to no impact
on lower Klamath
River populations
Any impacts the Proposed Action may
have on the middle Klamath River
populations through water quantity would
be more prevalent for individuals and
populations within the tributaries in the
upper portion of the middle Klamath
River.
The Proposed Action may have:
(-) An adverse impact in the form of reduced
juvenile and fry habitat resulting from reduced
annual flows at IGD;
(?) an unknown impact on the availability of
thermal refugia;
(+) In the short-term, artificial propagation
programs in the upper Klamath River will have
a slight beneficial effect on ESU abundance
and spatial structure,; and
(?) neutral or uncertain effects on the ESU
productivity and diversity.
241