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• 1. [Article] Habitat Improvement Project, No. 2

  "The construction of Illinois Falls fish ladder on the Illinois River in Oregon was completed in November 1961. The ladder was opened and operated during the winter of 1961-62. Final cleanup and rock removal ...

  Citation × Citation Citation Abstract Copy Title: Habitat Improvement Project, No. 2 Author: Oregon. State Game Commission. Fishery Division, Borovicka, Robert L., Jacobson, Donald M. "The construction of Illinois Falls fish ladder on the Illinois River in Oregon was completed in November 1961. The ladder was opened and operated during the winter of 1961-62. Final cleanup and rock removal was completed in the fall of 1962. The ladder was installed on a natural barrier where fish passage was delayed by low and moderately high river levels. The facility installed was a concrete vertical baffle-type fishway patterned after the Hells Gate fishway in use on the Fraser River in Canada. Since the ladder has been installed, salmon and steelhead have arrived at upper river areas much earlier than previously recorded. Concentrations of fish have not been observed below the falls." (Abstract from Author) Title: Habitat Improvement Project, No. 2 Author: Oregon. State Game Commission. Fishery Division, Borovicka, Robert L., Jacobson, Donald M. "The construction of Illinois Falls fish ladder on the Illinois River in Oregon was completed in November 1961. The ladder was opened and operated during the winter of 1961-62. Final cleanup and rock removal was completed in the fall of 1962. The ladder was installed on a natural barrier where fish passage was delayed by low and moderately high river levels. The facility installed was a concrete vertical baffle-type fishway patterned after the Hells Gate fishway in use on the Fraser River in Canada. Since the ladder has been installed, salmon and steelhead have arrived at upper river areas much earlier than previously recorded. Concentrations of fish have not been observed below the falls." (Abstract from Author) Close

• 2. [Article] Habitat Improvement Project, No. 8

  "Miller Lake was chemically treated with toxaphene on September 16, 1958 to destroy a population of parasitic lamprey (E.tridentatus) and Tui Chub (Siphatelep bicolor). Toxaphene was applied at the rate ...

  Citation × Citation Citation Abstract Copy Title: Habitat Improvement Project, No. 8 Author: Oregon. State Game Commission. Fishery Division, Borovicka, Robert L., Gerlach, Arthur H. "Miller Lake was chemically treated with toxaphene on September 16, 1958 to destroy a population of parasitic lamprey (E.tridentatus) and Tui Chub (Siphatelep bicolor). Toxaphene was applied at the rate of 0.04 ppm. No lamprey or fish have been collected in the lake since the chemical treatment. Work since 1959 has been in the form of testing the water for residual toxaphene and toxicity to trout. Materials and water were analyzed by Charlton Laboratories in Portland, Oregon by paper chromatography. The Agricultural Chemistry Department at Oregon State University conducted the majority of the analyses by gas chromatography. The detailed information on the chemical treatment was reported in a progress report February 13, 1959. Testing of Miller Lake will continue under Federal Aid Project No. F-20-D-20." (Abstract from Author) Title: Habitat Improvement Project, No. 8 Author: Oregon. State Game Commission. Fishery Division, Borovicka, Robert L., Gerlach, Arthur H. "Miller Lake was chemically treated with toxaphene on September 16, 1958 to destroy a population of parasitic lamprey (E.tridentatus) and Tui Chub (Siphatelep bicolor). Toxaphene was applied at the rate of 0.04 ppm. No lamprey or fish have been collected in the lake since the chemical treatment. Work since 1959 has been in the form of testing the water for residual toxaphene and toxicity to trout. Materials and water were analyzed by Charlton Laboratories in Portland, Oregon by paper chromatography. The Agricultural Chemistry Department at Oregon State University conducted the majority of the analyses by gas chromatography. The detailed information on the chemical treatment was reported in a progress report February 13, 1959. Testing of Miller Lake will continue under Federal Aid Project No. F-20-D-20." (Abstract from Author) Close