Red Bluff Technical Report Abstract Johnson, R.R., and C.D.
Martin, 1997. Abundance and Seasonal Spatial and Diel
Distribution Patterns of Juvenile Salmonids Passing the Red
Bluff Diversion Dam, Sacramento River, 1994, Red Bluff Research
Pumping Plant Report Series, Volume 2, United States Department
of the Interior, Fish and Wildlife Service and Bureau of
Reclamation, Red Bluff, California. 64 pp. This report
summarizes information for the pilot year of juvenile salmonid
outmigration monitoring in the Sacramento River at Red Bluff
Diversion Dam (RBDD), Red Bluff, California. The Northern
Central Valley Fish and Wildlife Office is using up to four
rotary screw traps (traps) in a transect line across the river
to evaluate absolute, relative, temporal, spatial and diel
patterns of abundance. The study period for this report began
with the first trap deployment on 18 July 1994 until 30 June
1995. During this period over 90 thousand fish representing 28
species were sampled. Over 90% of the sampled fish were chin