Figure l. — Location of Columbia and Snake River hydroelectric dams. 



the Dalles (Monan and Liscom see footnote 3), and 

 Rock Island ( French and Wahle 1956) Dams on the 

 Columbia River and at Lower Monumental (Mo- 

 nan and Liscom^; Gray and Haynes'^) and Lower 

 Granite (Liscom and Monan^) Dams on the Snake 



1971. Northwest Fisheries Center, Natl. Mar. Fish. Serv., 

 NOAA, Seattle, Wash., 24 p. 



^Monan, G. E., and K. L. Liscom. 1973. Final report, radio 

 tracking of adult spring chinook salmon below Bonneville and 

 the Dalles Dams, 1972. Northwest Fish. Cent., Natl. Mar. Fish. 

 Serv., NOAA, Seattle, 37 p. 



"Monan, G. E., and K. L. Liscom. 1974. Radio tracking 

 studies of fall chinook salmon to determine effect of peaking on 

 passage at Bonneville Dam, 1973. Northwest Fish. Cent., Natl. 

 Mar. Fish. Serv., NOAA, Seattle, 28 p. 



^Monan, G. E., and K. L. Liscom. 1975. Final report, radio 

 tracking studies to determine the effect of spillway deflectors and 

 fallback on adult chinook salmon and steelhead trout at Bon- 

 neville Dam, 1974. Northwest Fish. Cent., Natl. Mar. Fish. 

 Serv., NOAA, Seattle, 38 p. 



«Monan, G. E., and K.L. Liscom. 1974. Final report, radio 

 tracking of spring chinook salmon to determine effect of spillway 

 deflectors on passage at Lower Monumental Dam, 

 1973. Northwest Fish. Cent., Natl. Mar. Fish. Serv., NOAA, 

 Seattle, 20 p. 



■'Gray,R.H.,andJ.M.Haynes. 1976. Upstream movement 

 of adult salmonids in relation to gas supersaturated water. In 

 Pacific Northwest Laboratory Annual Report for 1975, p. 73-76. 

 Vol. I, Life Sciences, Part 2, Ecological Sciences. Battelle, 

 Pacific Northwest Laboratories, Richland, Wash. 



*Liscom, K.L., and G.E. Monan. 1976. Final report, radio 



186 



River. However, delays of upstream migrants 

 were generally not considered excessive. We used 

 radiotelemetry to evaluate effects of Little Goose 

 Dam on upstream movements of chinook salmon, 

 Oncorhynchus tshawytscha, in the lower Snake 

 River, and compared our results with those of pre- 

 vious studies at other dams. 



Materials and Methods 



Our telemetry equipment was developed at the 

 Bioelectronics Laboratory, University of Min- 

 nesota (Tester and SinifP; Winter et al.^"). 

 Transmitters were pressure-sensitive and permit- 

 ted determination of salmon location and swim- 



tracking studies to evaluate the effects of the spillway deflectors 

 at Lower Granite Dam on adult fish passage, 1975. Northwest 

 Fish. Cent., Natl. Mar. Fish Serv., NOAA, Seattle, 18 p. 



^Tester, J. R., and D. B. Siniff. 1976. Vertebrate behavior 

 and ecology progress report for period July 1, 1975-June 30, 

 1976. COO-1332-123. Prepared for U.S. Energy Research and 

 Development Administration. Contract No. E(ll-1)-1332. Uni- 

 versity of Minnesota, Minneapolis, 63 p. 



i"Winter, J. D., V. B. Kuechle, D. B. Siniff, and J. R. Tes- 

 ter. 1978. Equipment and methods for radio tracking fresh- 

 water fish. Univ. Minn. Agric. Exp. Stn. Misc. Rep. 152-1978, 

 18 p. 



