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This data release consist of the annual sediment depositional volume at five floodplain and five point bar sites on Powder River in southeastern Montana from 1979 through 2017. These 10 sites are a subgroup of a larger group of cross-sections established in 1975 and 1977 to monitor the channel changes along a 90-kilometer reach of Powder River. In addition to the sediment deposition data, characteristic of the annual peak flood are listed. The data are in 1 Excel files containing worksheets (10) corresponding to each channel cross-section .
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This shapefile contains a representation of the Canyon coal bed outcrop or clinker contact in the Decker coalfield, Powder River Basin, Montana. This area is part of the National Coal Assessment Rocky Mountain and Northern Great Plains Region.
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This ArcView shapefile contains a polygon representation of the Knobloch coal resource unit - main coal bed split. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
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This ArcView shapefile contains a polygon representation of numerous themes for the Decker coalfield. These themes are listed in the process steps. Its sole purpose is to allow the users to perform multiple theme queries. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
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These ArcView shapefiles contain: 1) a representation of thickness of overburden above the Anderson-Canyon coal zone, and 2) a representation of exposed zone for the Anderson-Canyon coal zone in the Decker coalfield, Powder River Basin, Montana. These themes were created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
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The USGS Wyoming-Montana Water Science Center (WY–MT WSC) completed a report (Sando and McCarthy, 2018) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 66.7-, 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for selected USGS streamgages. This data release presents peak-flow frequency analyses for selected streamgages in Dawson and Richland Counties, and the Powder River Basin, based on data through water year 2022, using methods described by Sando and McCarthy (2018).
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This ArcView shapefile contains a polygon representation of numerous themes for the Knobloch coal resource assessment unit. These themes are listed in the process steps. Its sole purpose is to allow the users to perform multiple theme queries. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
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This ArcView shapefile is a polygon representation of the overburden thickness above the Knobloch coal resource unit in the Powder River Basin. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
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This ArcView shapefile contains a representation of clinker in the Decker coalfield area. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
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The USGS Wyoming-Montana Water Science Center (WY–MT WSC) completed a report (Sando and McCarthy, 2018) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines (England and others, 2019). The methods are used to provide estimates of peak-flow quantiles for 66.7-, 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities (AEPs) for selected USGS streamgages. This data release presents peak-flow frequency analyses for selected streamgages in Carter, Custer, Fallon, Powder River, and Prairie Counties, and the Powder River Basin, based on data through water year 2022, using methods described by Sando and McCarthy (2018).
This data release consists of tables with the thickness and particle-size characteristics of overbank sediment deposited in May 1978 along the valley of Powder River in southeastern Montana. About 900 sediment samples were collected at regularly-spaced distances from 20 valley transects along a 90-kilometer reach of Powder River between Moorhead and Broadus, Montana. The decrease in sediment thickness and particle size with distance from the main channel showed weak trends, which were caused by the variability introduced by vegetation sediment traps and subsidiary channels.
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This is land use and land coverage digital data collected by the U.S. Geological Survey. The data was converted to an ARC/INFO coverage by the Environmental Protection Agency. The individual coverages were merged by the USGS to form a single coverage. This theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region.
map background search result map search result map Sediment Deposition on Floodplains and Point Bars of Powder River in Southeastern Montana from 1979 through 2017 Decker coalfield clinker from 1999 National Coal Resource Assessment (dkclkg.shp) Canyon coal bed outcrop and clinker contact from 1999 National Coal Resource Assessment (dkcnocg.shp) Unioned layer for the the Decker coalfield, Montana (dkfing.shp) Unioned layer for the Knobloch coal resource unit, Montana (knfing.shp) Coal overburden thickness of Knobloch coal zone from 1999 National Coal Resource Assessment (knovbg.shp) Knobloch coal resource unit - main coal bed split, 1999 National Coal Resource Assessment (knsplitg.shp) Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp) Wyodak-Anderson clinker in the Powder River Basin, Wyoming and Montana (prbclkg.shp) U.S. Forest Service land in the Powder River Basin (prbfsg.shp) Wyodak-Anderson mine and lease areas in the Powder River Basin, Wyoming and Montana (prbleasg.shp) Land use and land cover in the Powder River Basin area (prblulcg.shp) Tribal boundaries in the Powder River Basin area (prbtlg.shp) Unioned layer for the Wyodak-Anderson coal zone in the Powder River Basin, Montana and Wyoming (wafing.shp) Overburden above the Wyodak-Anderson coal zone in the Powder River Basin, Wyoming and Montana, 1999 (waovbg.shp) Trace elements, stratigraphic data, and proximate analysis samples in the Wyodak-Anderson coal zone, Powder River Basin, Wyoming and Montana (waptg) Decker overburden and exposed zone for the Anderson-Canyon coal zone, 1999 National Coal Resource Assessment Thickness and characteristics of overbank sediment deposited during an extreme flood in May 1978 along Powder River, Montana, USA Results of peak-flow frequency analyses for selected streamgages in Dawson and Richland Counties, and the Powder River Basin, Montana, based on data through water year 2022 Results of peak-flow frequency analyses for selected streamgages in Carter, Custer, Fallon, Powder River, and Prairie Counties, and the Powder River Basin, Montana, based on data through water year 2022 Knobloch coal resource unit - main coal bed split, 1999 National Coal Resource Assessment (knsplitg.shp) Coal overburden thickness of Knobloch coal zone from 1999 National Coal Resource Assessment (knovbg.shp) Unioned layer for the Knobloch coal resource unit, Montana (knfing.shp) Thickness and characteristics of overbank sediment deposited during an extreme flood in May 1978 along Powder River, Montana, USA Decker overburden and exposed zone for the Anderson-Canyon coal zone, 1999 National Coal Resource Assessment Sediment Deposition on Floodplains and Point Bars of Powder River in Southeastern Montana from 1979 through 2017 Decker coalfield clinker from 1999 National Coal Resource Assessment (dkclkg.shp) Canyon coal bed outcrop and clinker contact from 1999 National Coal Resource Assessment (dkcnocg.shp) Unioned layer for the the Decker coalfield, Montana (dkfing.shp) Tribal boundaries in the Powder River Basin area (prbtlg.shp) Results of peak-flow frequency analyses for selected streamgages in Carter, Custer, Fallon, Powder River, and Prairie Counties, and the Powder River Basin, Montana, based on data through water year 2022 Wyodak-Anderson clinker in the Powder River Basin, Wyoming and Montana (prbclkg.shp) U.S. Forest Service land in the Powder River Basin (prbfsg.shp) Trace elements, stratigraphic data, and proximate analysis samples in the Wyodak-Anderson coal zone, Powder River Basin, Wyoming and Montana (waptg) Unioned layer for the Wyodak-Anderson coal zone in the Powder River Basin, Montana and Wyoming (wafing.shp) Overburden above the Wyodak-Anderson coal zone in the Powder River Basin, Wyoming and Montana, 1999 (waovbg.shp) Results of peak-flow frequency analyses for selected streamgages in Dawson and Richland Counties, and the Powder River Basin, Montana, based on data through water year 2022 Wyodak-Anderson mine and lease areas in the Powder River Basin, Wyoming and Montana (prbleasg.shp) Land use and land cover in the Powder River Basin area (prblulcg.shp) Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp)