Dale M Robertson
Dale Robertson is a Research Hydrologist with the Upper Midwest Water Science Center.
Dale is an Adjunct Professor at the University of Wisconsin-Green Bay, Michigan Technological University, and University of Toledo, and a Honorary Fellow with the Center for Limnology at the University of Wisconsin-Madison. His current research with the USGS deals with modeling eutrophication and mixing in lakes, estimating loads and concentrations of nutrients and sediment in streams over large geographic areas, such as the Great Lakes and Mississippi River Basins, developing nutrient criteria for streams and rivers, and examining the effects of climate change on the physical dynamics, ice cover, and productivity of lakes.
AREAS OF EXPERTISE
- Biogeochemistry - Hydrology/Limnology
- Eutrophication - Nutrient Transport and Fate
- Limnology
- Water-quality modeling in Lakes
- Watershed modeling (SPARROW)
- Influence of environmental factors, watershed management strategies, and in-lake management alternatives on the water quality of rivers and lakes
- Climate Change - Ice as climatic indicators
- Regional loading estimates
Education and Certifications
Post-Doctoral Research Fellow, in Reservoir Modeling - Centre for Water Research, University of Western Australia, Perth. 1989-1991.
Ph.D Oceanography and Limnology - University of Wisconsin-Madison.
Dissertation: "The Use of Lake Water Temperature and Ice Cover as Climatic Indicators", 1984-1989.
M.S. Oceanography and Limnology-University of Wisconsin-Madison.
Thesis:"Interbasin Separation and Its Impact on the Annual Heat Budgets of the Individual Basins in Trout Lake, Wisconsin," 1981-1984.
B.S. Biology, Chemistry, and Mathematics - St. Norbert College, DePere, Wisconsin, 1976-1981.
Science and Products
USGS library for S-PLUS for Windows -- Release 4.0
Nutrient inputs to the Laurentian Great Lakes by source and watershed estimated using SPARROW watershed models
Hydrology, phosphorus, and suspended solids in five agricultural streams in the Lower Fox River and Green Bay Watersheds, Wisconsin, Water Years 2004-06
Response in the trophic state of stratified lakes to changes in hydrology and water level: potential effects of climate change
Sedimentary phosphorus cycling and a phosphorus mass balance for the Green Bay (Lake Michigan) ecosystem
A multi-agency nutrient dataset used to estimate loads, improve monitoring design, and calibrate regional nutrient SPARROW models
Hydrology, water quality, and response to changes in phosphorus loading of Minocqua and Kawaguesaga Lakes, Oneida County, Wisconsin, with special emphasis on effects of urbanization
Trends in Streamflow and Nutrient and Suspended-Sediment Concentrations and Loads in the Upper Mississippi, Ohio, Red, and Great Lakes River Basins, 1975-2004
Water Quality and Hydrology of Silver Lake, Barron County, Wisconsin, With Special Emphasis on Responses of a Terminal Lake to Changes in Phosphorus Loading and Water Level
Water Quality and Hydrology of Whitefish (Bardon) Lake, Douglas County, Wisconsin, With Special Emphasis on Responses of an Oligotrophic Seepage Lake to Changes in Phosphorus Loading and Water Level
Incorporating uncertainty into the ranking of SPARROW model nutrient yields from Mississippi/Atchafalaya River basin watersheds
Dynamics in phosphorus retention in wetlands upstream of Delavan Lake, Wisconsin
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USGS library for S-PLUS for Windows -- Release 4.0
Release 4.0 of the U.S. Geological Survey S-PLUS library supercedes release 2.1. It comprises functions, dialogs, and datasets used in the U.S. Geological Survey for the analysis of water-resources data. This version does not contain ESTREND, which was in version 2.1. See Release 2.1 for information and access to that version. This library requires Release 8.1 or later of S-PLUS for Windows. S-PLAuthorsDavid L. Lorenz, Elizabeth A. Ahearn, Janet M. Carter, Timothy A. Cohn, Wendy J. Danchuk, Jeffrey W. Frey, Dennis R. Helsel, Kathy Lee, David C. Leeth, Jeffrey D. Martin, Virginia L. McGuire, Kathleen M. Neitzert, Dale M. Robertson, James R. Slack, J. Jeffrey Starn, Aldo V. Vecchia, Donald H. Wilkison, Joyce E. WilliamsonNutrient inputs to the Laurentian Great Lakes by source and watershed estimated using SPARROW watershed models
Nutrient input to the Laurentian Great Lakes continues to cause problems with eutrophication. To reduce the extent and severity of these problems, target nutrient loads were established and Total Maximum Daily Loads are being developed for many tributaries. Without detailed loading information it is difficult to determine if the targets are being met and how to prioritize rehabilitation efforts. TAuthorsDale M. Robertson, David A. SaadHydrology, phosphorus, and suspended solids in five agricultural streams in the Lower Fox River and Green Bay Watersheds, Wisconsin, Water Years 2004-06
A 3-year study was conducted by the U.S. Geological Survey and the University of Wisconsin-Green Bay to characterize water quality in agricultural streams in the Fox/Wolf watershed in northeastern Wisconsin and provide information to assist in the calibration of a watershed model for the area. Streamflow, phosphorus, and suspended solids data were collected between October 1, 2003, and September 3AuthorsDavid J. Graczyk, Dale M. Robertson, Paul D. Baumgart, Kevin FermanichResponse in the trophic state of stratified lakes to changes in hydrology and water level: potential effects of climate change
To determine how climate-induced changes in hydrology and water level may affect the trophic state (productivity) of stratified lakes, two relatively pristine dimictic temperate lakes in Wisconsin, USA, were examined. Both are closed-basin lakes that experience changes in water level and degradation in water quality during periods of high water. One, a seepage lake with no inlets or outlets, has aAuthorsDale M. Robertson, William J. RoseSedimentary phosphorus cycling and a phosphorus mass balance for the Green Bay (Lake Michigan) ecosystem
The tributaries of Green Bay have long been recognized as major sources of phosphorus in the Lake Michigan basin. The status of Green Bay as a sink or source of phosphorus for Lake Michigan proper has been less well defined. The bay receives nearly 70% of its annual load of phosphorus ( 700 metric tons (t) · year-1) from a single source: the Fox River. Most of this phosphorus is deposited in sedimAuthorsJ.V. Klump, D. N. Edgington, P.E. Sager, Dale M. RobertsonA multi-agency nutrient dataset used to estimate loads, improve monitoring design, and calibrate regional nutrient SPARROW models
Stream‐loading information was compiled from federal, state, and local agencies, and selected universities as part of an effort to develop regional SPAtially Referenced Regressions On Watershed attributes (SPARROW) models to help describe the distribution, sources, and transport of nutrients in streams throughout much of the United States. After screening, 2,739 sites, sampled by 73 agencies, wereAuthorsD. A. Saad, G. E. Schwarz, Dale M. Robertson, N.L. BoothHydrology, water quality, and response to changes in phosphorus loading of Minocqua and Kawaguesaga Lakes, Oneida County, Wisconsin, with special emphasis on effects of urbanization
Minocqua and Kawaguesaga Lakes are 1,318- and 690-acre interconnected lakes in the popular recreation area of north-central Wisconsin. The lakes are the lower end of a complex chain of lakes in Oneida and Vilas Counties, Wis. There is concern that increased stormwater runoff from rapidly growing residential/commercial developments and impervious surfaces from the urbanized areas of the Town of MinAuthorsHerbert S. Garn, Dale M. Robertson, William J. Rose, David A. SaadTrends in Streamflow and Nutrient and Suspended-Sediment Concentrations and Loads in the Upper Mississippi, Ohio, Red, and Great Lakes River Basins, 1975-2004
Many actions have been taken to reduce nutrient and suspended-sediment concentrations and the amount of nutrients and sediment transported in streams as a result of the Clean Water Act and subsequent regulations. This report assesses how nutrient and suspended-sediment concentrations and loads in selected streams have changed during recent years to determine if these actions have been successful.AuthorsDavid L. Lorenz, Dale M. Robertson, David W. Hall, David A. SaadWater Quality and Hydrology of Silver Lake, Barron County, Wisconsin, With Special Emphasis on Responses of a Terminal Lake to Changes in Phosphorus Loading and Water Level
Silver Lake is typically an oligotrophic-to-mesotrophic, soft-water, terminal lake in northwestern Wisconsin. A terminal lake is a closed-basin lake with surface-water inflows but no surface-water outflows to other water bodies. After several years with above-normal precipitation, very high water levels caused flooding of several buildings near the lake and erosion of soil around much of the shoreAuthorsDale M. Robertson, William J. Rose, Faith A. FitzpatrickWater Quality and Hydrology of Whitefish (Bardon) Lake, Douglas County, Wisconsin, With Special Emphasis on Responses of an Oligotrophic Seepage Lake to Changes in Phosphorus Loading and Water Level
Whitefish Lake, which is officially named Bardon Lake, is an oligotrophic, soft-water seepage lake in northwestern Wisconsin, and classified by the Wisconsin Department of Natural Resources as an Outstanding Resource Water. Ongoing monitoring of the lake demonstrated that its water quality began to degrade (increased phosphorus and chlorophyll a concentrations) around 2002 following a period of hiAuthorsDale M. Robertson, William J. Rose, Paul F. JuckemIncorporating 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 that mostAuthorsDale M. Robertson, Gregory E. Schwarz, David A. Saad, Richard B. AlexanderDynamics in phosphorus retention in wetlands upstream of Delavan Lake, Wisconsin
A phosphorus budget was constructed for Delavan Lake Inlet, a perennial riverine wetland with submersed and floating aquatic vegetation in southeastern Wisconsin, to better understand the phosphorus dynamics in natural wetlands and the role of wetlands in lake-rehabilitation efforts. During the growing season, the inlet served as a net source of phosphorus, primarily due to the release of phosphorAuthorsDale M. Robertson, John F. Elder, Gerald L. Goddard, William F. James - Web Tools
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