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Yellowstone River Basin
Yellowstone Impact Study Prepared for the Old West Regional Commission, July 1977
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The Yellowstone Impact Study, conducted by the Water Resources Division of the Montana Department of Natural Resources and Conservation and financed by the Old West Regional Commission, was designed to evaluate the potential physical, biological and water use impacts of water withdrawals and water development on the middle and lower reaches of the Yellowsone River Basin in Montana. The study's plan of operation was to project three possible levels of future agricultural, industrual and municipal development in the Yellowstone Basin and the streamflow depletions associated with that development. Impacts on river morphology and water quality were then assessed and finally the impacts of altered streamflow, morphology and water quality on such factors as migratory birds, furbearers, recreation and existing water users were analyzed.
The study began in the fall of 1974. By its conclusion in December of 1976, the information generated by the study had already been used for a number of moratorium-related projects — the EIS on reservations of water in the Yellowstone Basin, for example (Montana DNRC 1976). The study resulted in a final report summarizing all aspects of the study and in eleven specialized technical reports:
| Report No. 1 | Future Development Projections and Hydrologic Modeling in the Yellowstone River Basin, Montana |
| Report No. 2 | The Effect of Altered Streamflow on the Hydrology and Geomorphology of the Yellowstone River Basin, Montana |
| Report No. 3 | The Effect of Altered Streamflow on the Water Quality of the Yellowstone River Basin, Montana |
| Report No. 4 | The Adequacy of Montana's Regulatory Framework for Water Quality Control |
| Report No. 5 | Aquatic Invertebrates of the Yellowstone River Basin, Montana |
| Report No. 6 | The Effect of Altered Streamflow on Furbearing Mammals of the Yellowstone River Basin, Montana |
| Report No. 7 | The Effect of Altered Streamflow on Migratory Birds of the Yellowstone River Basin, Montana |
| Report No. 8 | The Effect of Altered Streamflow on Fish of the Yellowstone and Tongue Rivers, Montana |
| Report No. 9 | The Effect of Altered Streamflow on Existing Municipal and Agricultural Users of the Yellowstone River Basin, Montana |
| Report No. 10 | The Effect of Altered Streamflow on Water-Based Recreation in the Yellowsone River Basin, Montana |
| Report No. 11 | The Economics of Altered Streamflowin the Yellowstone River Basin, Montana |
Final Order of the Board of Natural Resources and Conservation Establishing Water Reservations, 1979
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| Chuck Dalby |
Yellowstone River Basin Map - USGS
Table of Contents
Municipal Reservations
Irrigation Reservations
Multipurpose Reservations
Instream Reservations
Findings of Fact and Conclusions of Law -
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City of Livingston City of Big Timber City of Columbus City of Laurel City of Billings Miles City City of Glendive Town of Broadus Park Conservation District Sweet Grass CD Stillwater CD Carbon CD Yellowstone CD Big Horn CD Treasure CD Rosebud CD North Custer CD Powder River CD Prairie CD Dawson CD |
Richland CD Little Beaver CD Buffalo Rapids Project Dept of State Lands (9931-r) Dept of State Lands (9933-r) Dept of State Lands (9934-r) Bureau of Land Mgmt. (12334-01-r) Bureau of Land Mgmt. (12334-02-r) Dept. of Natural Resources Bureau of Reclamation (12330-r42KJ) Bureau of Reclamation (12332-r42K) Bureau of Reclamation (12331-r43Q) Fish and Game Commission Dept. of Health and Environmental Sciences North Custer CD (Instream) (12334-03-r) Bureau of Land Mgmt. (12334-03-r) Huntley Project Bureau of Reclamation (12333-r43P) Bureau of Land Mgmt. (Instream) (12334-r) Order Modifying Reservation |
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