A5029351609- Hydrology and Watershed Management Studies
- Water Quality and Resources Studies
- Soil and Water Nutrient Dynamics
- Coastal wetland ecosystem dynamics
- Groundwater and Isotope Geochemistry
- Groundwater flow and contamination studies
- Peatlands and Wetlands Ecology
- Flood Risk Assessment and Management
- Hydrology and Sediment Transport Processes
- Archaeology and Natural History
- Land Use and Ecosystem Services
- Global Health and Surgery
- Water Quality Monitoring Technologies
- Climate Change, Adaptation, Migration
- Economic, financial, and policy analysis
- Groundwater and Watershed Analysis
- Underwater Acoustics Research
- Water Quality Monitoring and Analysis
- Wildlife-Road Interactions and Conservation
- Water resources management and optimization
- Heavy metals in environment
- Rangeland and Wildlife Management
- Soil erosion and sediment transport
- Ecology and biodiversity studies
- Archaeology and ancient environmental studies
United States Geological Survey
2003-2019
Denver Federal Center
2003-2017
Abstract Understanding the factors that affect water quality and ecological services provided by freshwater ecosystems is an urgent global environmental issue. Predicting how will respond to changes not only requires data, but also information about context of individual bodies across broad spatial extents. Because lake usually sampled in limited geographic regions, often for time periods, assessing controls compilation many data sets regions into integrated database. LAGOS-NE accomplishes...
Understanding hydrologic connectivity between wetlands and perennial streams is critical to understanding the reliance of stream flow on inputs from wetlands. We used isotopic evaporation signal in water remote sensing examine wetland-stream within Pipestem Creek watershed, North Dakota, a watershed dominated by prairie-pothole exhibited an evaporated-water that had approximately half isotopic-enrichment found most evaporatively enriched Groundwater adjacent values indicated recharge winter...
Hydrograph separations were performed using the PART, HYSEP 1, 2, and 3, BFLOW UKIH methods on 104,293 years of daily streamflow records from 3,936 streamflow-gaging stations in Ontario, Canada eight Great Lakes States Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, Wisconsin to estimate base-flow index (BFI) base flow. BFI ranged an average 0.24 depending which hydrograph-separation method was used. data 959 selected with a combined 28,784 used relate surficial geology...
Abstract Representing hydrologic connectivity of non‐floodplain wetlands (NFWs) to downstream waters in process‐based models is an emerging challenge relevant many research, regulatory, and management activities. We review four case studies that utilize developed simulate NFW hydrology. Models range from a simple, lumped parameter model highly complex, fully distributed model. Across studies, we highlight appropriate application each model, emphasizing spatial scale, computational demands,...
This report describes the Great Lakes hydrologic system and methods used to quantify individual components of water balance. Potential sources uncertainty are identified and, where appropriate, alternate or additional data, models, estimation suitable for reducing uncertainties discussed. Finally, approximate all identified, compared, assessed within context net basin supply. Results indicate that average in monthly estimates water-balance may range from 1.5 percent 45 percent. These cause...
Research into processes governing the hydrologic connectivity of depressional wetlands has advanced rapidly in recent years. Nevertheless, a need persists for broadly applicable, non-site-specific guidance to facilitate further research. Here, we explicitly use landscapes theoretical framework develop applicable conceptual knowledge depressional-wetland connectivity. We used numerical model simulate groundwater flow through five generic landscapes. Next, inserted and repeated modeling...
Cottonwood Lake area wetlands, North Dakota, U.S.A. Fluctuations in pond permanence, size, and salinity are key features of prairie-pothole wetlands that provide a variety wetland habitats for waterfowl the northern prairie America. Observation water-level fluctuations semi-permanent over 20-year period, included periods when occasionally was dry, as well wetter years depth surface extent doubled while volume increased 10 times. Compared to all other measured budget components, groundwater...
This report presents the results of first known integrated study long-term average ground-water recharge to shallow aquifers (generally less than 100 feet deep) in United States and Canada for Great Lakes, upper St. Lawrence, Ottawa River Basins. The approach used was consistent throughout area allows direct comparison rates disparate parts area. Estimates are based on base-flow estimates streams Lakes Basin assumption that base flow a given stream is equal amount surrounding watershed,...
Abstract Williams and Shingobee lakes are at opposite ends of the local ground water flow system in River Headwaters Area (SRHA) north‐central Minnesota. Lake, situated near highest point system, has no surface inlet or outlet, precipitation only sources water. lowest as an outlet. Ground directly contributes estimated one‐fourth input to Lake. The also receives large amounts discharge along its reach Lake providing a large, indirect source lake. Differences nutrient concentrations reflect...
First posted October 17, 2022 For additional information, contact: Director, Northern Prairie Wildlife Research CenterU.S. Geological Survey8711 37th Street Southeast Jamestown, ND 58401Contact Pubs Warehouse Depressional wetlands in the Pothole Region of North America have a long history investigation owing to their importance maintaining migratory-bird populations, especially waterfowl. One area particularly intensive study is Cottonwood Lake Stutsman County, Dakota. Studies at began 1967...
As part of the Lake St. Clair Regional Monitoring Project, this report describes numerous cooperative water-resources monitoring efforts conducted in River/Lake Basin over last 100 years. Cooperative is a tool used to observe and record changes water quantity quality time. This for streamflows flood magnitudes, past present water-quality conditions, significant human-health threats, flow-regime that are result changing land use. Water-resources long-term effort can be made cost-effective by...
Vast expanses of sedge fen in Schoolcraft County Michigan's Upper Peninsula were ditched and diked the early to mid-1900s promote agricultural development create waterfowl habitat. Unintended consequences these actions far reaching included deposition large amounts sand Manistique River. In 2002, U.S. Fish Wildlife Service, which now manages much wetland as part Seney National Refuge, attempted restore streamflow Walsh Creek overland flow downgradient Ditch, near C-3 Pool. Streamflow data...