Gregory E Schwarz (Former Employee)
Science and Products
Filter Total Items: 68
Development of a national, dynamic reservoir-sedimentation database Development of a national, dynamic reservoir-sedimentation database
The importance of dependable, long-term water supplies, coupled with the need to quantify rates of capacity loss of the Nation’s re servoirs due to sediment deposition, were the most compelling reasons for developing the REServoir- SEDimentation survey information (RESSED) database and website. Created under the auspices of the Advisory Committee on Water Information’s Subcommittee on...
Authors
J. R. Gray, J.M. Bernard, D. W. Stewart, E.J. McFaul, K.W. Laurent, G. E. Schwarz, J.T. Stinson, M.M. Jonas, T. J. Randle, J.W. Webb
Nutrient Trends in Streams and Rivers of the United States, 1993-2003 Nutrient Trends in Streams and Rivers of the United States, 1993-2003
Trends in streamflow and concentrations and loads of total phosphorus, total nitrogen, and nitrate were determined for the period from 1993 to 2003 in selected streams and ricers of the United States. Flow-adjusted trends in concentration (the trends that would have occurred in the absence of natural chances in streamflow), non-flow-adjusted trends in concentration (the trends resulting...
Authors
Lori A. Sprague, David K. Mueller, Gregory E. Schwarz, David L. Lorenz
RESIS-II: An Updated Version of the Original Reservoir Sedimentation Survey Information System (RESIS) Database RESIS-II: An Updated Version of the Original Reservoir Sedimentation Survey Information System (RESIS) Database
The Reservoir Sedimentation Survey Information System (RESIS) database, originally compiled by the Soil Conservation Service (now the Natural Resources Conservation Service) in collaboration with the Texas Agricultural Experiment Station, is the most comprehensive compilation of data from reservoir sedimentation surveys throughout the conterminous United States (U.S.). The database is a...
Authors
Katherine V. Ackerman, David M. Mixon, Eric T. Sundquist, Robert F. Stallard, Gregory E. Schwarz, David W. Stewart
Online interactive U.S. Reservoir Sedimentation Survey Database Online interactive U.S. Reservoir Sedimentation Survey Database
In April 2009, the U.S. Geological Survey and the Natural Resources Conservation Service (prior to 1994, the Soil Conservation Service) created the Reservoir Sedimentation Survey Database (RESSED) and Web site, the most comprehensive compilation of data from reservoir bathymetric and dry basin surveys in the United States. RESSED data can be useful for a number of purposes, including...
Authors
J.B. Gray, J.M. Bernard, G. E. Schwarz, D. W. Stewart, K.T. Ray
Recent technologies usher in new era of coastal geomorphology research Recent technologies usher in new era of coastal geomorphology research
[No abstract available]
Authors
J. R. Gray, J.M. Bernard, G. E. Schwarz, D. W. Stewart, K.T. Ray
Incorporating uncertainty into the ranking of SPARROW model nutrient yields from Mississippi/Atchafalaya River basin watersheds Incorporating uncertainty into the ranking of SPARROW model nutrient yields from Mississippi/Atchafalaya River basin watersheds
Excessive loads of nutrients transported by tributary rivers have been linked to hypoxia in the Gulf of Mexico. Management efforts to reduce the hypoxic zone in the Gulf of Mexico and improve the water quality of rivers and streams could benefit from targeting nutrient reductions toward watersheds with the highest nutrient yields delivered to sensitive downstream waters. One challenge is...
Authors
Dale M. Robertson, Gregory E. Schwarz, David A. Saad, Richard B. Alexander
Science and Products
Filter Total Items: 68
Development of a national, dynamic reservoir-sedimentation database Development of a national, dynamic reservoir-sedimentation database
The importance of dependable, long-term water supplies, coupled with the need to quantify rates of capacity loss of the Nation’s re servoirs due to sediment deposition, were the most compelling reasons for developing the REServoir- SEDimentation survey information (RESSED) database and website. Created under the auspices of the Advisory Committee on Water Information’s Subcommittee on...
Authors
J. R. Gray, J.M. Bernard, D. W. Stewart, E.J. McFaul, K.W. Laurent, G. E. Schwarz, J.T. Stinson, M.M. Jonas, T. J. Randle, J.W. Webb
Nutrient Trends in Streams and Rivers of the United States, 1993-2003 Nutrient Trends in Streams and Rivers of the United States, 1993-2003
Trends in streamflow and concentrations and loads of total phosphorus, total nitrogen, and nitrate were determined for the period from 1993 to 2003 in selected streams and ricers of the United States. Flow-adjusted trends in concentration (the trends that would have occurred in the absence of natural chances in streamflow), non-flow-adjusted trends in concentration (the trends resulting...
Authors
Lori A. Sprague, David K. Mueller, Gregory E. Schwarz, David L. Lorenz
RESIS-II: An Updated Version of the Original Reservoir Sedimentation Survey Information System (RESIS) Database RESIS-II: An Updated Version of the Original Reservoir Sedimentation Survey Information System (RESIS) Database
The Reservoir Sedimentation Survey Information System (RESIS) database, originally compiled by the Soil Conservation Service (now the Natural Resources Conservation Service) in collaboration with the Texas Agricultural Experiment Station, is the most comprehensive compilation of data from reservoir sedimentation surveys throughout the conterminous United States (U.S.). The database is a...
Authors
Katherine V. Ackerman, David M. Mixon, Eric T. Sundquist, Robert F. Stallard, Gregory E. Schwarz, David W. Stewart
Online interactive U.S. Reservoir Sedimentation Survey Database Online interactive U.S. Reservoir Sedimentation Survey Database
In April 2009, the U.S. Geological Survey and the Natural Resources Conservation Service (prior to 1994, the Soil Conservation Service) created the Reservoir Sedimentation Survey Database (RESSED) and Web site, the most comprehensive compilation of data from reservoir bathymetric and dry basin surveys in the United States. RESSED data can be useful for a number of purposes, including...
Authors
J.B. Gray, J.M. Bernard, G. E. Schwarz, D. W. Stewart, K.T. Ray
Recent technologies usher in new era of coastal geomorphology research Recent technologies usher in new era of coastal geomorphology research
[No abstract available]
Authors
J. R. Gray, J.M. Bernard, G. E. Schwarz, D. W. Stewart, K.T. Ray
Incorporating uncertainty into the ranking of SPARROW model nutrient yields from Mississippi/Atchafalaya River basin watersheds Incorporating uncertainty into the ranking of SPARROW model nutrient yields from Mississippi/Atchafalaya River basin watersheds
Excessive loads of nutrients transported by tributary rivers have been linked to hypoxia in the Gulf of Mexico. Management efforts to reduce the hypoxic zone in the Gulf of Mexico and improve the water quality of rivers and streams could benefit from targeting nutrient reductions toward watersheds with the highest nutrient yields delivered to sensitive downstream waters. One challenge is...
Authors
Dale M. Robertson, Gregory E. Schwarz, David A. Saad, Richard B. Alexander