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1.. "\ 001881 t " . 1. Bighorn River at Manderson, Wyo. - discontinued Sept. 30. 2. Greybull River at Meeteetse, Wyo. - discontinued Sept. 30. 3. Platte River near Overton, Nebr. - discontinued Sept. 30. The regular field program for sediment stations supported by lfisseUJ'i. Basin project funds was continued. Three sets of field data for the transport study representing different vater temperat_ lIJId Iwdraulic conditiODS vare obtained for reaches of MiddleLoup River at Dunning, Nebr., Dismal River at Dunning, Nebr., and Middle Loup River below the confluellCe with the Dismal River. Sediment discharge data for the 1955 water year were released as completed. Review and revision of the report "Investigations of sedilllent trans- portation, Middle Loup River at Dunning, Nebr., with application of data frOlll turbulence flllll1e" was completed for publication as a water-supply paper. The progress report, "Investigations of sediment transportation, Middle Loup River at Dwmi.ng, Nebr., 1956", was completed and submitted for'open}'ile release. Sedimentation investigations in the Cheyenne River basin which were supported by funds transferred by the Bureau of Reclamation were continued. Studies of upland erosion and deposition to obtain data for land- treatment practicies were conducted ill association with hydrologic studies in the Willow Creek area nearRlrt1'eck, Mont., the Wind River and Bighorn River Basins, Wyo., and the Box Creek area of the Cheyenne River Basin, near Douglas, Wyo. Data collected during the 1956 season on sediment yields, for reservoir drainage basins were being processed for i1lC1usion in a compilation report scheduled for publication as a water-supply paper. Sedimentation investigations in the Medicine Creek baSin were con- tinued. These were supported by funds transferred by the ,Bureau of Rsclamation aa.d Agricultural Research Service and were part of a larger joint progrlllll carried on by the Bureau of Reclamation, Agricultural Research'Service, Soil COJlServation Service, Geological Survey, and University of IIl&braska. The investigations of sediment depoSition in two detention reservoirs one in lfhjtehead Subwatershed, Nebr., and one on Kiowa Creek,Colo. were con- tinued. A progress report on "Trap efficiency investigations, Whitehead Sub- watershed (Brownell Creek No.1) near ~acuse, Nebr., Gage No. 1 and Gage No. a- was completed in preliminary form. The Kiowa Creek basin program, which also includes the measurement of sediment discharge at two statioJlS., was continued. These iIIvestigations were supported by fllDds transferred by 'the Soil Couserva- tion Service. Paul. C. Benedict Regional Ebgineer Deciimber 31, 1956