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The Tlikakila River is located in Lake Clark National Park and Preserve and drains an area of 1,610 square kilometers (622 square miles). Runoff from the Tlikakila River Basin accounts for about one half of the total inflow to Lake Clark. Glaciers occupy about one third of the basin and affect the runoff characteristics of the Tlikakila River. As part of a cooperative study with the National Park Service, glacier changes and runoff characteristics in the Tlikakila River Basin were studied in water years 2001 and 2002.
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A raster dataset representing conifer cover within the Western United States. This dataset was made reclassifying the LANDFIRE 1.3 EVT layer into "Conifer-dominated Ecological Systems with Little to No Sagebrush", and "Conifer-dominated Ecological Systems Likely to Expand into Sagebrush".
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A raster dataset of the percent of tilled agriculture within a 5km radius moving window. This dataset was made by reclassifying the 2014 National Agricultural Statistics Service Cropland Datalayer into to include values of only tilled agriculture, then conductding a moving window analysis on the resulting raster to provide a dataset depicting amount of tilled agriculture within a 5km radius of each 30m pixel. This data was published July 2016.
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A raster dataset of the percent of precipitation that falls during summer (July-September). This dataset was made by dividing the 30-year Normal summer (July - September) precipitation value by the 30-year Normal Annual precipitation value. Data is provided at a 900m resolution. This data was published July 2016.
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The Cook Inlet Basin study unit of the U.S. Geological Survey National Water-Quality Assessment Program comprises 39,325 square miles in south-central Alaska. Data were collected at eight fixed sites to provide baseline information in areas where no development has taken place, urbanization or logging have occurred, or the effects of recreation are increasing. Collection of water-quality, biology, and physical-habitat data began in October 1998 and ended in September 2001 (water years 1999-2001). The climate for the water years in the study may be categorized as slightly cool-wet (1999), slightly warm-wet (2000), and significantly warm-dry (2001). Total precipitation was near normal during the study period, and...
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Scientific measurements at Wolverine Glacier, on the Kenai Peninsula in south-central Alaska, began in April 1966. At three long-term sites in the research basin, the measurements included snow depth, snow density, heights of the glacier surface and stratigraphic summer surfaces on stakes, and identification of the surface materials. Calculations of the mass balance of the surface strata - snow, new firn, superimposed ice, and old firn and ice mass at each site were based on these measurements. Calculations of fixed-date annual mass balances for each hydrologic year (October 1 to September 30), as well as net balances and the dates of minimum net balance measured between time-transgressive summer surfaces on the...
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This volume of the annual hydrologic data report of Alaska is one of a series of annual reports that document hydrologic data gathered from the U.S. Geological Survey's surface- and ground- water data-collection networks in each state, Puerto Rico, and the Trust Territories. These records of stream flow, ground-water levels, and water quality provide the hydrologic information needed by state, local, and Federal agencies, and the private sector for developing and managing our Nation's land and water resources.
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A raster dataset representing the resilience and resistance classes combined with greater sage-grouse breeding habitat probabilities. It was created to represent greater sage-grouse breeding habitat probabilities within each resilience and resistance class. It was created to be incorporated into a larger landscape scale geospatial data modeling effort, the Conservation and Restoration Strategy. The R&R and the GRSG Breeding Habitat Probability raster were incorporated; the resulting raster contained 12 values: 26 - Unsuitable Probability and High R&R 27 - Unsuitable Probability and Moderate R&R 28 - Unsuitable Probability and Low R&R 51 - Low Probability and High R&R 52 - Low Probability and Moderate R&R 53...
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This report describes the analysis of priority-pollutant trace element concentrations in streambed sediment samples collected in the Cook Inlet Basin during 1998 and 2000.
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The U.S. Geological Survey and the Alaska Department of Transportation and Public Facilities undertook a cooperative multiphase study of streambed scour at selected bridges in Alaska beginning in 1994. Of the 325 bridges analyzed for susceptibility to scour in the preliminary phase, 54 bridges were selected for a more intensive analysis that included site investigations. Cross- section geometry and hydraulic properties for each site in this study were determined from field surveys and bridge plans. Water- surface profiles were calculated for the 100- and 500-year floods using the Hydrologic Engineering Center's River Analysis System and scour depths were calculated using methods recommended by the Federal Highway...
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Dataset contains locations of drainage tile permits in North Dakota obtained from the State Water Commission as of October 2013. This dataset provides the latitude and longitude of the location given on the permit, which is not provided by the State Water Commission database. Additionally, overlap of permit polygons (if depicted in a geospatial application) is possible from two permits that share the same area. Permit applications that were marked as denied or that did not require a permit as determined by the State Water Commission were removed from this database.
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This product is the Water Resources Data for the 2003 water year for Alaska and consists of records of stage, discharge, and water quality of streams; stages of lakes; and water levels and water quality of ground water. This volume contains records for water discharge at 118 gaging stations; stage or contents only at 4 gaging stations; water quality at 28 gaging stations; and water levels for 53 observation wells. Also included are data for 66 crest-stage partial-record stations. Additional water data were collected at various sites not involved in the systematic data- collection program and are published as miscellaneous measurements and analyses. Some data collected during 2003 will be published in subsequent...
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A raster dataset representing sagebrush cover within the Western United States. This dataset was made reclassifying the LANDFIRE 1.3 EVT layer into "Sagebrush-dominated Ecological Systems", and "Grass-dominated Ecological Systems with Sagebrush Components". This data was published July 2016.
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A raster dataset of the percent of developed land within a 5km radius moving window. This dataset was made by reclassifying the 2011 National Landcover Dataset Percent Impervioussness Layer into to include values of only developed land, then conducting a moving window analysis on the resulting raster to provide a dataset depicting percent of developed land within a 5km radius of each grid cell. This data was published July 2016.
This report describes the quality of nutrient data in stream and ground-water samples collected in 52 NAWQA study units during water years 1992-2001 based on an analysis of contamination bias and sampling variability. The results of this QC analysis are compared to characteristics of the environmental data and to national water-quality standards and criteria to assess the potential effects of bias and variability on interpretation of the environmental data. The NAWQA study units that provided the QC data represent a broad array of hydrologic conditions in the 48 contiguous States and Alaska and Hawaii. The data were aggregated into a national data set during the spring of 2002 and were extensively reviewed.
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INTRODUCTION A groundwater geochemical study was carried out from August 1999 to August 2000 near Fairbanks, Alaska. Groundwater samples were collected at two-month-intervals from 17 domestic water supply wells located throughout the Fairbanks (Fig 1) area to (1) comprehensively define the baseline geochemical signature of the groundwater, (2) examine the spatial variability, (3) examine any seasonal variability, and (4) determine the concentration of arsenic species in the groundwater. This report presents the methodology and analytical results for the groundwater samples taken during this study.
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A raster dataset representing the probability of the surrounding landscape (6.4km radius) supporting a greater sage-grouse lek.This dataset was made by mosaicking the probability of GRSG habitat layers (citation) and classifying them into unsuitable (0.01-0.25), low (0.25-0.50), moderate (0.50-0.65), and high (0.65-1.0) probabilities of the landscape supporting a lek. The publication date of this data is July 2016.
map background search result map search result map North Dakota Drainage Tile Permits Trace, Minor and Major Element Data for Ground Water Near Fairbanks, Alaska, 1999-2000 Water Quality, Biological, and Physical Habitat Conditions at Fixed Sites in the Cook Inlet Basin, Alaska, National Water Quality Assessment Study Unit, October 1998-September 2001 Glacial History and Runoff Components of the Tlikakila River Basin, Lake Clark National Park and Reserve, Alaska Summary and Comparison of Multiphase Streambed Scour Analysis at Selected Bridge Sites in Alaska Water Quality of Streams Draining Abandoned and Recalaimed Mined Lands in the Kantishna Hills Areas, Denali National Park and Preserve, Alaska, 2008-2011 Priority-Pollutant Trace Elements in Streambed Sediments of the Cook Inlet Basin, Alaska, 1998-2000 30-Year Record of Surface Mass Balance (1966-95) and Motion and Surface Altitude (1975-95) at Wolverine Glacier, Alaska Quality of Nutrient Data from Streams and Ground Water Sampled during Water Years 1992-2001 Western United States Conifer Cover Raster Western United States Percent of Tilled Agriculture within a 5km Radius Raster GRSG Breeding Habitat Probability Raster Western United States Percent of Developed Land within a 5km Radius Raster Western United States Percent Summer Rain Raster GRSG Breeding Habitat Probabilities within R&R Classes Raster GRSG Relative High and Low Densities within R&R Classes Raster Western United States Sagebrush Cover Raster GRSG Relative Percent of Population Raster 30-Year Record of Surface Mass Balance (1966-95) and Motion and Surface Altitude (1975-95) at Wolverine Glacier, Alaska Trace, Minor and Major Element Data for Ground Water Near Fairbanks, Alaska, 1999-2000 Glacial History and Runoff Components of the Tlikakila River Basin, Lake Clark National Park and Reserve, Alaska Water Quality of Streams Draining Abandoned and Recalaimed Mined Lands in the Kantishna Hills Areas, Denali National Park and Preserve, Alaska, 2008-2011 North Dakota Drainage Tile Permits Water Quality, Biological, and Physical Habitat Conditions at Fixed Sites in the Cook Inlet Basin, Alaska, National Water Quality Assessment Study Unit, October 1998-September 2001 Quality of Nutrient Data from Streams and Ground Water Sampled during Water Years 1992-2001 Priority-Pollutant Trace Elements in Streambed Sediments of the Cook Inlet Basin, Alaska, 1998-2000 Summary and Comparison of Multiphase Streambed Scour Analysis at Selected Bridge Sites in Alaska GRSG Relative High and Low Densities within R&R Classes Raster GRSG Breeding Habitat Probabilities within R&R Classes Raster GRSG Relative Percent of Population Raster GRSG Breeding Habitat Probability Raster Western United States Percent of Tilled Agriculture within a 5km Radius Raster Western United States Conifer Cover Raster Western United States Sagebrush Cover Raster Western United States Percent of Developed Land within a 5km Radius Raster Western United States Percent Summer Rain Raster