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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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We report chemical analyses of stream-water, stream-sediment, soil, soil-water, bedrock, and vegetation samples collected from the headwaters of the Delta River (Tangle Lakes District, Mount Hayes 1:250,000-scale quadrangle) in east-central Alaska for the period June 20-25, 2006. Additionally, we present mineralogic analyses of stream sediment, concentrated by panning. The study area includes the southwestward extent of the Bureau of Land Management (BLM) Delta River Mining District (Bittenbender and others, 2007), including parts of the Delta River Archeological District, and encompasses an area of about 500 km2(approximately bordered by the Denali Highway to the south, near Round Tangle Lake, northward to the...
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To test the response of the dry Kluane boreal forest ecosystem (Yukon, Canada) to increased rainfall as predicted from climate change scenarios I irrigated three 1.5 ha forest stands from 1995-1999, to double baseline summer rainfall levels. I tested if various biotic and abiotic components of this ecosystem would react to the reduction of the summer water deficit relative to three control stands. I predicted that in response to irrigation: (1) growth (or biomass) in some species of plants would increase, (2) red-backed voles would in turn increase in numbers with greater plant-food availability because they are food-limited herbivores, (3) mushroom biomass would increase, (4) decomposition would increase, and hence...
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Many northern lake-rich regions are undergoing pronounced hydrological change, yet inadequate knowledge of the drivers of these landscape-scale responses hampers our ability to predict future conditions. We address this challenge in the thermokarst landscape of Old Crow Flats (OCF) using a combination of remote sensing imagery and monitoring of stable isotope compositions of lake waters over three thaw seasons (2007?2009). Quantitative analysis confirmed that the hydrological behavior of lakes is strongly influenced by catchment vegetation and physiography. Catchments of snowmelt-dominated lakes, typically located in southern peripheral areas of OCF, encompass high proportions of woodland/forest and tall shrub vegetation...
map background search result map search result map Ground-water quality in the Cook Inlet basin, Alaska, 1999 Effects of water addition on biotic and abiotic components of a dry boreal forest in the Yukon Water quality in the Cook Inlet basin, Alaska, 1998-2001 Approach for Developing Water Quality Goals for United Keno Hill Mines Energy and Water Cycles in a High-Latitude, North-Flowing River System A semi-automated tool for surface water mapping with RADARSAT-1 Arsenic speciation and mobility in surface water at Lucky Shot Gold Mine, Alaska Total particulate carbon (TPC), particulate inorganic carbon (PIC), particulate organic carbon (POC), and total particulate nitrogen (TPN) Water and sediment quality in the Yukon river Basin, Alaska, during water year 2004 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 Water resources and channel geometry of Birch Creek National Wild River, Alaska Water flow dynamics of groundwater-fed streams and their ecological significance in glacierized catchment The role of permafrost in water exchange of a black spruce forest in Interior Alaska Water Resources Stewardship Report, Denali National Park and Preserve Regional Geochemical Results from Analyses of Stream-Water, Stream-Sediment, Soil, Soil-Water, Bedrock, and Vegetation Samples, Tangle Lakes District, Alaska. Prepared in cooperation with Alaska Department of Natural Resources Controls on water balance of shallow thermokarst lakes and their relations with catchment characteristics: a multi-year, landscape-scale assessment based on water isotope tracers and remote sensing in Old Crow Flats, Yukon (Canada) Deciduous trees are a large and overlooked sink for snowmelt water in the boreal forest Determining Canadian water utility preparedness for the impacts of climate change Closure Water Conveyance System Design Update Report, Minto Mine Closure Water Conveyance System Design Update Report, Minto Mine Arsenic speciation and mobility in surface water at Lucky Shot Gold Mine, Alaska Regional Geochemical Results from Analyses of Stream-Water, Stream-Sediment, Soil, Soil-Water, Bedrock, and Vegetation Samples, Tangle Lakes District, Alaska. Prepared in cooperation with Alaska Department of Natural Resources A semi-automated tool for surface water mapping with RADARSAT-1 Controls on water balance of shallow thermokarst lakes and their relations with catchment characteristics: a multi-year, landscape-scale assessment based on water isotope tracers and remote sensing in Old Crow Flats, Yukon (Canada) The role of permafrost in water exchange of a black spruce forest in Interior Alaska Approach for Developing Water Quality Goals for United Keno Hill Mines Water resources and channel geometry of Birch Creek National Wild River, Alaska Effects of water addition on biotic and abiotic components of a dry boreal forest in the Yukon Water flow dynamics of groundwater-fed streams and their ecological significance in glacierized catchment Water Resources Stewardship Report, Denali National Park and Preserve Ground-water quality in the Cook Inlet basin, Alaska, 1999 Water quality in the Cook Inlet basin, Alaska, 1998-2001 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 Total particulate carbon (TPC), particulate inorganic carbon (PIC), particulate organic carbon (POC), and total particulate nitrogen (TPN) Water and sediment quality in the Yukon river Basin, Alaska, during water year 2004 Energy and Water Cycles in a High-Latitude, North-Flowing River System Determining Canadian water utility preparedness for the impacts of climate change Deciduous trees are a large and overlooked sink for snowmelt water in the boreal forest