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Robert Dudley

Hydrologist

Contact Info


Short Biography

I have worked with the USGS since 1992 during which I've done a variety of hydrologic, hydraulic, geophysical, and statistical-modeling studies encompassing climate-related hydrologic trends, watershed rainfall-runoff modeling, hydraulic modeling, statistical modeling, eco-hydrologic assessments, riverine and lacustrine sediment mapping, and public-water-supply water budgets. Ongoing and recent work includes: documenting historical long-term trends and modeling of future climate-related changes in streamflow and groundwater; hydraulic modeling in support of fish-passage evaluation for a dam-removal project on the Penobscot River; estimation of future inundation of salt marshes in response to sea–level rise in and around Acadia National Park; contributor to USEPA's reports of climate change indicators for the U.S. (2012 and 2014); determining effects of water temperature and lake-level variations on smallmouth bass habitat and survival on behalf of the International Joint Commission; and served as member of the Atlantic salmon DPS Recovery Team tasked with identifying priority recovery actions for USFWS and NOAA and providing input and recommendations on specific recovery issues relative to Atlantic salmon restoration and rehabilitation programs in Maine. I'm a licensed professional engineer in the State of Maine.





Publications

Dudley, R.W., and Trial, J.G., 2014, Estimates of growth and mortality of under-yearling smallmouth bass in Spednic Lake, from 1970 through 2008: U.S. Geological Survey Scientific Investigations Report 2014–5164, 15 p. [Link]

Nielsen, M.G., and Dudley, R.W., 2013, Estimates of future inundation of salt marshes in response to sea–level rise in and around Acadia National Park, Maine: U.S. Geological Survey Scientific Investigations Report 2012–5290, 20 p. [Link]

Dudley, R.W., and Hodgkins, G.A., 2013, Historical Groundwater Trends in Northern New England and Relations with Streamflow and Climatic Variables: Journal of the American Water Resources Association, DOI 10.1111/jawr.12080, 15 p. [Link]

Hodgkins, G.A., and Dudley, R.W., 2013, Modeled future peak streamflows in four coastal Maine rivers: U.S. Geological Survey Fact Sheet 2013-3021, 4 p. [Link]

Hodgkins, G.A., and Dudley, R.W., 2013, Modeled future peak streamflows in four coastal Maine rivers: U.S. Geological Survey Scientific Investigations Report 2013-5080, 18 p. [Link]

Markstrom, S.L., Hay, L.E., Ward-Garrison, C.D., Risley, J.C., Battaglin, W.A., Bjerklie, D.M., Chase, K.J., Christiansen, D.E., Dudley, R.W., Hunt, R.J., Koczot, K.M., Mastin, M.C., Regan, R.S., Viger, R.J., Vining, K.C., and Walker, J.F., 2012, Integrated watershed-scale response to climate change for selected basins across the United States: U.S. Geological Survey Scientific Investigations Report 2011–5077, 143 p. [Link]

Dudley, R.W., Hay, L.E., Markstrom, S.L., and Hodgkins, G.A., 2012, Watershed scale response to climate change—Cathance Stream Basin, Maine: U.S. Geological Survey Fact Sheet 2011–3128, 6 p. [Link]

Haro, A.J., Dudley, R.W., and Chelminski, M., 2012, Development of computational fluid dynamics—habitat suitability (CFD–HSI) models to identify potential passage—Challenge zones for migratory fishes in the Penobscot River: U.S. Geological Survey Fact Sheet 2012-3073, 2 p. [Link]

Hodgkins, G.A., Dudley, R.W., and Schalk, L.F., 2012, Relations between winter climatic variables and April streamflows in New England and implications for summer streamflows: U.S. Geological Survey Scientific Investigations Report 2012–5092, 11 p. [Link]

Dudley, R.W., and Nielsen, M.G., 2011, Inventory and protection of salt marshes from risks of sea-level rise at Acadia National Park, Maine: U.S. Geological Survey Fact Sheet 2011–0315, 4 p. [Link]

Dudley, R.W., Schalk, C.W., Stasulis, N.W., and Trial, J.G., 2011, A digital terrain model of bathymetry and shallow-zone bottom-substrate classification for Spednic Lake and estimates of lake-level-dependent habitat to support smallmouth bass persistence modeling: U.S. Geological Survey Scientific Investigations Report 2010–5255, 18 p. [Link]

Dudley, R.W., and Nielsen, M.G., 2011, Simulation of streamflow in the Pleasant, Narraguagus, Sheepscot, and Royal Rivers, Maine, using watershed models: U.S. Geological Survey Scientific Investigations Report 2010–5221, 31 p. [Link]

Mastin, M.C., Chase, K.J., and Dudley, R.W., 2011. Changes in spring snowpack for selected basins in the United States for different climate-change scenarios: Earth Interactions, volume 15, issue 23, pp. 1–18. [Link]

Hodgkins, G. A., and R. W. Dudley, 2011, Historical summer base flow and stormflow trends for New England rivers, Water Resources Research, 47, W07528, doi:10.1029/2010WR009109 [Link]

Dudley, Robert W.; Hodgkins, Glenn A.; Shanley, James B.; Mack, Thomas J., 2010. Quantifying effects of climate change on the snowmelt-dominated groundwater resources of northern New England. U.S. Geological Survey Fact Sheet 2010-3104, 4 p. [Link]

Hodgkins, Glenn A.; Lent, Robert M.; Dudley, Robert W.; Schalk, Charles W., 2009. Framework for a U.S. Geological Survey Hydrologic Climate-Response Program in Maine. U.S. Geological Survey Fact Sheet 2009-3044, 2 p. [Link]

Hodgkins, Glenn A.; Lent, Robert M.; Dudley, Robert W.; Schalk, Charles W., 2009. Framework for a U.S. Geological Survey Hydrologic Climate-Response Program in Maine. U.S. Geological Survey Open-File Report 2009-1115, vi, 24 p. [Link]

Dudley, Robert W.; Hodgkins, Glenn A.; Letcher, Benjamin H., 2008. Impacts of Low-Flow and Stream-Temperature Changes on Endangered Atlantic Salmon - Current Research. Geological Survey (U.S.) Fact Sheet 2008-3044, 4 p. [Link]

Dudley, Robert W., 2008. Simulation of the Quantity, Variability, and Timing of Streamflow in the Dennys River Basin, Maine, by Use of a Precipitation-Runoff Watershed Model. U.S. Geological Survey Scientific Investigations Report 2008-5100, vi, 37 p. [Link]

Hodgkins, Glenn A.; Stewart, Gregory J.; Cohn, Timothy A.; Dudley, Robert W., 2007. Estimated Magnitudes and Recurrence Intervals of Peak Flows on the Mousam and Little Ossipee Rivers for the Flood of April 2007 in Southern Maine. Geological Survey (U.S.) Open-File Report 2007-1146, 13 p. [Link]

Hodgkins, Glenn A.; Dudley, Robert W.; Aichele, Stephen S., 2007. Historical Changes in Precipitation and Streamflow in the U.S. Great Lakes Basin, 1915-2004. Geological Survey (U.S.) Scientific Investigations Report 2007-5118, iv, 31 p. [Link]

Schalk, Charles W.; Dudley, Robert W., 2007. Scoping of Flood Hazard Mapping Needs for Penobscot County, Maine. Geological Survey (U.S.) Open-File Report 2007-1129, 235 p. [Link]

Schalk, Charles W.; Dudley, Robert W., 2007. Scoping of Flood Hazard Mapping Needs for Androscoggin County, Maine. Geological Survey (U.S.) Open-File Report 2007-1131, 78 p. [Link]

Schalk, Charles W.; Dudley, Robert W., 2007. Scoping of Flood Hazard Mapping Needs for Hancock County, Maine. Geological Survey (U.S.) Open-File Report 2007-1128, 147 p. [Link]

Schalk, Charles W.; Dudley, Robert W., 2007. Scoping of Flood Hazard Mapping Needs for Lincoln County, Maine. Geological Survey (U.S.) Open-File Report 2007-1130, 111 p. [Link]

Dudley, Robert W.; Stewart, Gregory J., 2006. Estimated Effects of Ground-Water Withdrawals on Streamwater Levels of the Pleasant River near Crebo Flats, Maine, July 1 to September 30, 2005. Scientific Investigations Report 2006-5268, vi, 14 p. [Link]

Dudley, Robert W.; Schalk, Charles W., 2006. Scoping of flood hazard mapping needs for Cumberland County, Maine. Open-File Report 2006-1098, 267 p. [Link]

Dudley, Robert W.; Schalk, Charles W., 2006. Scoping of flood hazard mapping needs for Somerset County, Maine. Open-File Report 2006-1100, 131 p. [Link]

Dudley, Robert W.; Schalk, Charles W., 2006. Scoping of flood hazard mapping needs for Kennebec County, Maine. Open-File Report 2006-1099, 120 p. [Link]

Hodgkins, G. A., and Dudley, R. W., 2006, Changes in the timing of winter-spring streamflows in eastern North America, 1913-2002: Geophysical Research Letters, v. 33, L06402, doi:10.1029/2005GL025593. [Link]

Hodgkins, G. A., and Dudley, R. W., 2006, Changes in late-winter snowpack depth, water equivalent, and density in Maine, 1926-2004: Hydrological Processes, v. 20, p. 741 - 751. [Link]

Dudley, Robert W.; Hodgkins, Glenn A., 2005. Trends in timing, magnitude, and duration of summer and fall/winter streamflows for unregulated coastal river basins in Maine during the 20th century. Scientific Investigations Report 2005-5021, 35 p. [Link]

Dudley, Robert W., 2005. Flooding of the Androscoggin River during December 18-19, 2003, in Canton, Maine. Open-File Report 2005-1176, 13 p. [Link]

Dudley, Robert W., 2005. Streamflow statistics for the Dennys River at Dennysville, Maine, 1955-2004. Open-File Report 2005-1297, 26 p. [Link]

Hodgkins, Glenn A.; Dudley, Robert W.; Loiselle, Marc C., 2005. Historical late-winter and spring snowpack depth and equivalent water-content data for Maine. Open-File Report 2005-1259, 87 p. [Link]

Huntington, Thomas G.; Hodgkins, Glenn A.; Dudley, Robert W., 2005. Historical trend in ice thickness on the Piscataquis river, near Dover-Foxcroft, central Maine. Fact Sheet 2005-3003, 2 p. [Link]

Dudley, Robert W.; Hodgkins, Glenn A., 2005. Trends in streamflow, river ice, and snowpack for coastal river basins in Maine during the 20th century. Fact Sheet 2005-3001, 2 p. [Link]

Hodgkins, Glenn A.; Dudley, Robert W., 2005. Changes in streamflow timing in New England during the 20th century... from the National Streamflow Information Program. Geological Survey (U.S.) Fact Sheet 2005-3019, 4 p. [Link]

Hodgkins, Glenn A.; Dudley, Robert W., 2005. Changes in the magnitude of annual and monthly streamflows in New England, 1902-2002. Scientific Investigations Report 2005-5135, 44 p. [Link]

Hodgkins, G. A., Dudley, R. W., and Huntington, T. G., 2005, Changes in the number and timing of days of ice-affected flow on northern New England rivers, 1930-2000: Climatic Change, v. 71, p. 319-340. [Link]

Hodgkins, G. A., Dudley, R. W., and Huntington, T. G., 2005, Summer low flows in New England during the 20th century: Journal of the American Water Resources Association, v. 41, p. 403-412. [Link]

Dudley, Robert W. , 2004. Estimating Monthly, Annual, and Low 7-Day, 10-Year Streamflows for Ungaged Rivers in Maine. Scientific Investigations Report 2004-5026, 30 p. [Link]

Dudley, Robert W., 2004. Water Budget for Lake Auburn, Maine, May 1, 2000 through April 30, 2003. Scientific Investigations Report 2004-5106, 23 p. [Link]

Dudley, Robert W., 2004. Hydraulic-Geometry Relations for Rivers in Coastal and Central Maine. Scientific Investigations Report 2004-5042, 37 p. [Link]

Huntington, T. G., Hodgkins, G. A., Keim, B. D., and Dudley, R. W., 2004, Changes in the proportion of precipitation occurring as snow in New England (1949 to 2000): Journal of Climate, v. 17, p. 2626-2636. [Link]

Hodgkins, Glenn A.; Caldwell, James M.; Dudley, Robert W., 2003. Historical Dates of Ice-Affected Flows for 18 Rivers in New England. Open-File Report 2003-245, 55 p. [Link]

Hodgkins, G. A., Dudley, R. W., and Huntington, T. G., 2003, Changes in the timing of high river flows in New England over the 20th century: Journal of Hydrology, v. 278, p. 242-250. [Link]

Huntington, T. G., Hodgkins, G. A., and Dudley, R. W., 2003, Historical trend in river ice thickness and coherence in hydroclimatological trends in Maine: Climatic Change, v. 61, p. 217-236. [Link]

Dudley Robert W.; Hodgkins, Glenn A., 2002. Trends in Streamflow, River Ice, and Snowpack for Coastal River Basins in Maine During the 20th Century. Geological Survey (U.S.) Water-Resources Investigations Report 2002-4245, vi, 26 p. [Link]

Hansen, Bruce P.; Nichols, William J.; Dudley, Robert W., 2001. Borehole Geophysical Data From Eastland Woolen Mill Superfund Site, Corinna, Maine, March 1999. Geological Survey (U.S.) Open-File Report 2001-186, iii, 20 p. [Link]

Dudley, Robert W.; Hodgkins, Glenn A.; Nielsen, Joseph P., 2001. Water Budget for Sebago Lake, Maine, 1996-99. Geological Survey (U.S.) Water-Resources Investigations Report 2001-4235, iv, 18 p. [Link]

Nielsen, Martha G.; Dudley, Robert W.; Parrish, Camille S., 2001. Hydrologic data for the Eastland Woolen Mill Superfund Site, Penobscot County, Corinna, Maine, March through June 1999. Geological Survey (U.S.) Open-File Report 2001-212, iv, 19 p. [Link]

Dudley, R.W., Hodgkins, G.A., Mann, A., Chisolm, J., 2001. Evaluation of the Effects of Development on Peak-Flow Hydrographs for Collyer Brook, Maine. Geological Survey (U.S.) Water-Resources Investigations Report 2001-4156, Report: iv, 11 p.; 2 Plates [Link]

Dudley, Robert W., Giffen, Sarah E., 2001. Composition and Distribution of Streambed Sediments in the Penobscot River, Maine, May 1999. Geological Survey (U.S.) Water-Resources Investigations Report 2001-4223, iv, 30 p. [Link]

Mack, Thomas J.; Dudley, Robert W., 2001. Simulated Ground-Water-Flow Responses to Geohydrologic Characteristics, Corinna, Maine. Geological Survey (U.S.) Water-Resources Investigations Report 2001-4079, iv, 28 p. [Link]

Dudley, Robert W., Nielsen, Joseph P., 2000. Streamflow Statistics for the Narraguagus River at Cherryfield, Maine. Geological Survey (U.S.) Open-File Report 2000-95, iii, 18 p. [Link]

Dudley, R.W., Panchang, V.G., and Newell, C.R., 2000. Application of a comprehensive modeling strategy for the management of net-pen aquaculture waste transport: Aquaculture, Elsevier Science, (187) 3-4 (2000) p. 319-349. [Link]

Dudley, Robert W., 1999. Riverbed-Sediment Mapping in the Edwards Dam Impoundment on the Kennebec River, Maine By Use of Geophysical Techniques. Geological Survey (U.S.) Open-File Report 99-200, 7 p.; Plate [Link]

Dudley, R.W., Panchang, V.G., Newell, C.R., 1998. AWATS: A Net-Pen Aquaculture Waste Transport Simulator for Management Purposes. Proc. 26th US-Japan Aquaculture Symposium, Durham, New Hampshire, Nov. 1997. US-Japan Cooperative Program in Natural Resources (UJNR) Tech Report No. 26, Ed. W. H. Howell et al. pp 215-228.

Dudley, R. W., Olson, S. A., Handley, Michael, 1997. A preliminary study of runoff of selected contaminants from rural Maine highways. U.S. Dept. of the Interior, U.S. Geological Survey ; [Branch of] Information Services [distributor], Water-Resources Investigations Report 97-4041, iv, 18 p. : ill. ;28 cm.






                           

My Science Topics


Science Topic
Subtopic
Water Resourcesdrainage basins
Water Resourcesdroughts
Water Resourcesfloods
Water Resourcesground water
Water Resourcesrunoff
Water Resourcesstreamflow
Water Resourcessurface water
Water Resourceswater budget
Techniques and Methodsmathematical modeling
Techniques and Methodsmathematical simulation
Techniques and Methodsstatistical analysis
Plants and Animalsendangered species
Plants and Animalsmigratory species
Natural Resourcesfishery resources
Natural Resourcesinland fisheries
Natural Resourceswater resources
Hydrologic Processesground-water level
Hydrologic Processeshydrodynamics
Hydrologic Processeshydrology
Hydrologic Processesrunoff
Hydrologic Processesstreamflow
Hydrologic Processeswater circulation
Hydrologic Processeswater cycle
Ecology and Environmentaquatic ecosystems
Ecology and Environmentfreshwater ecosystems
Atmosphere and Climateclimate change
Atmosphere and Climateglobal change



My USGS Science Strategy Areas

A National Hazard, Risk, and Resilience Assessment Program

A Water Census of the United States

Climate Variability & Change

Understanding Ecosystems & Predicting Ecosystems Change

Hydrologic and hydraulic modeling, statistical hydrology, ecohydrology

Image of Current Focus for Hydrologic and hydraulic modeling, statistical hydrology, ecohydrology

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Contact Information

Robert Dudley
196 Whitten Road
Augusta, ME 04330-0000
rwdudley@usgs.gov
207-622-8201 x115
207-622-8204 - Fax
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