Journal of the American Water Resources Association

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The Role of Headwater Streams in Downstream Water Quality1
Journal of the American Water Resources Association - Tập 43 Số 1 - Trang 41-59 - 2007
Richard B. Alexander, Elizabeth W. Boyer, Richard A. Smith, Gregory E. Schwarz, Richard B. Moore
Abstract:  Knowledge of headwater influences on the water‐quality and flow conditions of downstream waters is essential to water‐resource management at all governmental levels; this includes recent court decisions on the jurisdiction of the Federal Clean Water Act (CWA) over upland areas that contribute to larger downstream water bodies. We review current watershed r...... hiện toàn bộ
Nutrient Inputs to the Laurentian Great Lakes by Source and Watershed Estimated Using SPARROW Watershed Models1
Journal of the American Water Resources Association - Tập 47 Số 5 - Trang 1011-1033 - 2011
Dale M. Robertson, David A. Saad
AN EXAMINATION OF LAND USE ‐ NUTRIENT EXPORT RELATIONSHIPS1
Journal of the American Water Resources Association - Tập 18 Số 6 - Trang 1013-1024 - 1982
Michael Beaulac, Kenneth H. Reckhow
ABSTRACT: Lake and watershed management strategies and recent environmental legislation dictate that nonpoht nutrient sources associated with storm water runoff must be assessed. Accordingly, a nutrient flu assessment for phosphorus and nitrogen is conducted through an extensive literature review of nutrient export studies. These studies are reevaluated. The nutrien...... hiện toàn bộ
The Stream‐Catchment (StreamCat) Dataset: A Database of Watershed Metrics for the Conterminous United States
Journal of the American Water Resources Association - Tập 52 Số 1 - Trang 120-128 - 2016
Ryan A. Hill, Matt Weber, Scott G. Leibowitz, Anthony R. Olsen, Darren J. Thornbrugh
AbstractWe developed an extensive database of landscape metrics for ~2.65 million stream segments, and their associated catchments, within the conterminous United States (U.S.): The Stream‐Catchment (StreamCat) Dataset. These data are publically available ( hiện toàn bộ
WATER QUALITY AND SOURCE OF FRESHWATER DISCHARGE TO THE CALOOSAHATCHEE ESTUARY, FLORIDA1
Journal of the American Water Resources Association - Tập 35 Số 4 - Trang 793-806 - 1999
Peter H. Doering, Robert H. Chamberlain
ABSTRACT: The Caloosahatchee River has two major sources of freshwater one from its watershed and the other via an artificial connection to Lake Okeechobee. The contribution of each source to the freshwater discharge reaching the downstream estuary varies and either may dominate. Routine monitoring data were analyzed to determine the effects of total river discharge...... hiện toàn bộ
Open Water Data in Space and Time
Journal of the American Water Resources Association - Tập 52 Số 4 - Trang 816-824 - 2016
David R. Maidment
AbstractAn Open Water Data Initiative has been established by the federal government to enhance water information sharing across the United States (U.S.) using standardized web services for geospatial and temporal data. In a parallel effort, the National Weather Service has established a new National Water Center on the Tuscaloosa campus of the University of Alabam...... hiện toàn bộ
ADJUSTMENT OF STREAM CHANNEL CAPACITY FOLLOWING DAM CLOSURE, YEGUA CREEK, TEXAS1
Journal of the American Water Resources Association - Tập 38 Số 6 - Trang 1521-1531 - 2002
Anne Chin, Daniel Harris, Todd H. Trice, Jeffrey L. Given
ABSTRACT: In Yegua Creek, a principal tributary of the Brazos River in Texas, surveys of a 19 km channel reach downstream of Somerville Dam show that channel capacity decreased by an average of 65 percent in a 34 year period following dam closure. The decrease corresponds with an approximately 85 percent reduction in annual flood peaks. Channel depth has changed the...... hiện toàn bộ
CHANNEL CHANGES DOWNSTREAM FROM A DAM1
Journal of the American Water Resources Association - Tập 34 Số 3 - Trang 629-637 - 1998
R. F. Hadley, William W. Emmett
ABSTRACT: A flood‐control dam was completed during 1979 on Bear Creek, a small tributary stream to the South Platte River in the Denver, Colorado, area. Before and after dam closure, repetitive surveys between 1977 and 1992 at five cross sections downstream of the dam documented changes in channel morphology. During this 15‐year period, channel width increased sligh...... hiện toàn bộ
EFFECT OF ORIENTATION OF SPATIALLY DISTRIBUTED CURVE NUMBERS IN RUNOFF CALCULATIONS1
Journal of the American Water Resources Association - Tập 36 Số 6 - Trang 1391-1400 - 2000
Glenn E. Moglen
ABSTRACT: The NRCS curve number approach to runoff estimation has traditionally been to average or “lump” spatial variability into a single number for purposes of expediency and simplicity in calculations. In contrast, the weighted runoff curve number approach, which handles each individual pixel within the watershed separately, tends to result in larger estimates o...... hiện toàn bộ
COMPOSITE VS. DISTRIBUTED CURVE NUMBERS: EFFECTS ON ESTIMATES OF STORM RUNOFF DEPTHS1
Journal of the American Water Resources Association - Tập 34 Số 5 - Trang 1015-1023 - 1998
M. La Grove, Jon Harbor, Bernard Engel
ABSTRACT: The U.S. Department of Agriculture Curve Number (CN) method is one of the most common and widely used techniques for estimating surface runoff and has been incorporated into a number of popular hydrologic models. The CN method has traditionally been applied using compositing techniques in which the area weighted average of all curve numbers is calculated f...... hiện toàn bộ
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