Unity Reservoir in Baker County, Oregon, was chemically treated with liquid rotenone on October 17, 1962. Approximately 136 miles of streams and diversion ditches and seven small ponds, tributary to the reservoir, were treated with liquid rotenone prior to work on the reservoir. The reservoir at time of treatment contained...
South Twin Lake in Deschutes County, Oregon was chemically treated September 14, 1965, to eliminate a population of Tui Chub (Siphateles bicolor). A total of 605 gallons of liquid synergized rotenone and 9,750 pounds of powdered rotenone was applied to the lake. It was estimated that 130,000 mature chub were...
The project objectives were to determine the possibility of raising the subterranean water in adequate amounts by installation of an underground weir; to determine what type of structure would be most feasible; and to formulate a biological evaluation program if the first two objectives were accomplished. Tex Creek, tributary to...
Clear Creek, tributary of North Fork John Day River, is a mountain stream located in the Blue Mountains of eastern Oregon. It joins Granite Creek about 1.5 miles below the old abandoned mining town of Granite. Gravel removed from Clear Creek by gold dredging activity was replaced in a 3.37-mile...
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...
A segment of the Crooked River, Crook County, Oregon, was chemically treated along with sections of Ochoco Creek, McKay Creek, and Dry River from August 13 to November 5, 1963.' A total of 860 gallons of liquid synergized rotenone (Pro-Noxfish) was used to obtain toxicities up to 2.0 ppm in...
The following projects were completed between July 1, 1965, and June 30, 1966, under the stream clearance segment of the State-wide Stream Improvement Program. The larger segments were initiated by requesting competitive bids with the contract for logjam removal awarded to the lowest acceptable bid. The smaller projects were undertaken...
Upper Cow Lake located in Malheur County, Oregon has a surface area of 975 acres and a volume of 7,150 acre-feet of water. Chemical treatment of the lake was completed September 11, 1963 to remove an abundant population of coarsescale suckers, bridgelip suckers, squawfish, black bullhead, shiners and dace.
Approximately...
Malheur Reservoir located in Malheur County, Oregon, was chemically treated with liquid rotenone on October 11, 1962 to eliminate an abundant population of black crappie and a smaller population of fine scale suckers and redside shiners.
Tests for toxicity indicated the reservoir had detoxified prior to December 1, 1962.
A...
Malheur Reservoir in Malheur County, Oregon, was chemically treated on October 11, 1962, to eliminate an abundant population of black crappie and a smaller population of finescale suckers and redsided shiners. A total of 1,100 gallons of liquid synergized rotenone (Pro-Noxfish) was used to establish a toxicity of 1.5 p.p.m....