. Biennial report, Montana Game and Fish Commission, State of Montana. Montana Fish and Game Commission; Game protection; Wildlife conservation; Fisheries. Fish and game personnel check the upper Madison River to determine effects of the 1959 earthquake. (Photo by George Holton.) Central Fisheries District Nineteen lakes and impoundments were surveyed during the biennium. Information on size, volume and fish numbers was gathered. Light, portable equipment is used on mountain lake surveys. (Photo by Tom Smith.) for use in future management. Fish in five streams were studied by means of an elect
. Biennial report, Montana Game and Fish Commission, State of Montana. Montana Fish and Game Commission; Game protection; Wildlife conservation; Fisheries. Fish and game personnel check the upper Madison River to determine effects of the 1959 earthquake. (Photo by George Holton.) Central Fisheries District Nineteen lakes and impoundments were surveyed during the biennium. Information on size, volume and fish numbers was gathered. Light, portable equipment is used on mountain lake surveys. (Photo by Tom Smith.) for use in future management. Fish in five streams were studied by means of an electric shocker. Sampling stations were set up on Belt Creek, and water quality standards are being established for use in determining the effects of any future mine-mill pollution. A method for measuring the ability of water to produce fish is needed. This problem is being approached from three angles: fish growth, total dissolved solids, and periphyton production. Several streams are being sampled regularly. Some phases of this study are being carried out by the department's fishery labora- tory, and the balance is being conducted in the Central Montana Fisheries District. Rehabilitation to remove rough fish and reintroduce trout was carried out on six lakes and reservoirs and one stream. Follow-up surveys were carried out on the Marias River, Kipp Lake, Eureka Reservoir and Tunnel Lake in order to determine the results of previous rehabilitation and replanting. All had good numbers of trout. Nine private ponds were rehabilitated during this period with owners paying the cost of rehabilitation and replant- ing. Cutthroat trout (Salmo clarki) originally inhabited all Montana waters in and adjacent to the mountains, except for a considerable number of small isolated virgin lakes. To aid in the management of this fine native trout, a study on the distribution of cutthroat and the factors affecting them was completed. Cut- throat were recorded from 699 streams and 244 Montana lakes.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfisheries, bookyear19
