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Che. Quill ty and sedi~ation ,~ ~ 11issouri River Basin , . \ 1 ~-# rrnfErrorc'r,rnfl:'n. un lb Uj ~.II Vi ["Iill JUL5-1957 COLD, WATER CONSERVATION BOARD The chemical-quality program supported by Missouri Basin project funds was continued in the upper lij,ssouri River, Yellowstone River, Grand River, Cheyenne River, Bad River, llhite River"James River, Platte River, Kansas River, and Red River of the North drainage basins, as well as on the main stem of the Missouri River. Chemical-quality data were obtained at 64 locations on streams, reservoirs, and lakes. Chemical-quality sections of three reports of ground- water-resources investigations were completed or were in progress; 12 sections, previously released in ground-water-resources reports, were reviewed and revised. the preparation of a report on the chemical quality and sedimentation of surface waters in the Grand River drainage basin, North and South Dakota was nearly completed.. . Sedimentation O~ig84 Annual Progres s Report June 1957 Chemical Quality In addition to the Missouri River Basin project program, investiga- tions of the chemical quality of the Missouri River and selected tributaries at 14 irrigation network'locations were supported by funds appropriated directly to the Geological Survey. ' InvestigatiOns of chemical quality of water were also carried on at three reservoirs in North and South Dakota in cooperation with the Corp. of Engineers. Basic data, obtained as results of the above programs, were released as compilations were completed. The sedimentation program supported by Missouri Basin project funds included investigations of sediment discharge of streams at 37'locations in the Big Hole River, Gallatin River, Marias River, Willow Creek, Yellowstone River, 'lfhite River, James River, Niobrara River, Platte River, Kansas River, and Red River of the North drainage basins; and studies of variable hydraulic parameters for sediment transport for the Middle Loup and Dismal Rivers near Dunning, NebraSka. During the second quarter of the fiscal year, program priorities resulted in discontinuance of collectiqn of sediment discharge data at three locations. The Departmental Wind River sedimentation program, that included the investigation of sediment discharge of major tributary streams with particular reference to channel and land-treatment programs, was continued.. During the first quarter of the fiscal year, 'sediment discharge was measUred at,iO sta- tions. During the second 'quarter, program priorities resulted in discontinuance of studieS: on Poison Creek, and reduced emphasis a1 the 'II'ind and Popi Agie Rivers near Riverton, Wyoming. This program was .padly supported by fuu.ds transferred by the Bureau of Reclamation. The report "Sedimentation and chemical quality of surface waters in the Wind River Basin, 1fyqming" was published as Water-Supply Paper 1373.