HYDROPOWER 2-11 



System Operation 2-11 



Columbia River Treaty 2-12 



Pacific Northwest Coordination 



Agreement 2-12 



Northwest Power Pool 2-13 



Headwater Payments 2-14 



Benefits and Costs to Western Montana 



and the Northwest Region 2-14 



MUNICIPAL WATER SUPPLIES 2-18 



INDUSTRIAL/MUNICIPAL WASTEWATER DISPOSAL 2-19 



WATER RESERVATIONS 2-20 



Introduction 2-20 



Upper Clark Fork Water Reservations 



Proceedings 2-21 



RECREATION AND AESTHETICS 2-22 



MACROINVERTEBRATES 2-24 



Silver Bow Creek to Milltown Dam 2-2 4 



Milltown Dam to the Confluence of 



the Flathead River 2-2 5 



Confluence of the Flathead River 



to the Idaho Border 2-27 



FISHERIES 2-27 



Introduction 2-27 



Upper Clark Fork Fishery 



(Headwaters to Milltown Dam) 2-28 



Fish Species Composition 2-28 



Trout Population Estimates. , 2-28 



Trout Spawning and Rearing 



Habitat 2-29 



Tributary Trout Spawning 



Migrations 2-30 



Middle Clark Fork Fishery 



(Milltown Dam to Flathead River) .... 2-31 



Fish Species Composition 2-31 



Trout Population Estimates 2-31 



Trout Spawning and Rearing 



Habitat 2-33 



Tributary Trout Spawning 



Migrations 2-35 



Lower Clark Fork Fishery 



(Flathead River to Lake Pend Oreille) . 2-35 



Cabinet Gorge Reservoir 2-36 



Noxon Rapids Reservoir 2-36 



Fisherman Use and Benefits 2-38 



ii 



