"June 15, 1976." Cover title "Submitted by Gary J. Wicks, Director, Montana Department of Natural Resources and Conservation, 32 S. Ewing, Helena, Montana 59601 to Dr. Kenneth Blackburn, Project coordinator, Old West Regional Commission, Room 306A Fratt Building, Billings, Montana 59102" -- Cover Includes bibliographical references (p. 166-170) Introduction -- Investigation of aquatic communities -- Assessment of the impact of altered stream flows on selected migratory birds -- Assessment of the impact of altered stream flows on selected furbearing mammals -- Assessment of the impact of altered stream flows on agriculture which is dependent upon irrigation -- Assessment of the impact of altered stream flows on municipal and non-energy industrial water supplies -- Investigation of existing and potential impacts of coal development on water quality -- Investigation of water-based recreation on the Yellowstone River --Investigation of the impact of altered stream flows on channel processes and dynamics -- Water model calibration and river basin simulation -- Commencement of final impact evaluation of water withdrawals and water development on the middle and lower portions of the Yellowstone River drainage, Montana -- Commencement of economic evaluation of water withdrawals and water development on the middle and lower portions of the Yellowstone River drainage, Montana -- Evaluation of water model -- Financial information -- Literature cited 14