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Estimation of base flow on ungaged, periodically measured streams in small watersheds in western Pennsylvania [研究报告]
10.3133/sir20185150U.S. Geological Survey. 2019-01-01
Hittle, Elizabeth ehittle@usgs.gov;  Risser, Dennis W. dwrisser@usgs.gov
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Surface-water quality in the Lycoming Creek watershed, north-central Pennsylvania, August 1–3, 2011 [研究报告]
10.3133/sir20175154U.S. Geological Survey. 2018-01-01
Risser, Dennis W. dwrisser@usgs.gov;  Conlon, Matthew D. mconlon@usgs.gov
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Water quality and quantity and simulated surface-water and groundwater flow in the Laurel Hill Creek Basin, southwestern Pennsylvania, 1991–2007 [研究报告]
10.3133/sir20165082U.S. Geological Survey. 2017-01-01
Galeone, Daniel G. dgaleone@usgs.gov;  Risser, Dennis W. dwrisser@usgs.gov;  Eicholtz, Lee W. eicholtz@usgs.gov;  Hoffman, Scott A. shoffman@usgs.gov
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Water-budgets and recharge-area simulations for the Spring Creek and Nittany Creek Basins and parts of the Spruce Creek Basin, Centre and Huntingdon Counties, Pennsylvania, Water Years 2000???06 [研究报告]
10.3133/sir20155073U.S. Geological Survey. 2015-01-01
Fulton, John W. jwfulton@usgs.gov;  Risser, Dennis W. dwrisser@usgs.gov;  Regan, Robert S. rsregan@usgs.gov;  Walker, John F. jfwalker@usgs.gov;  Hunt, Randall J. rjhunt@usgs.gov;  Niswonger, Richard G. rniswon@usgs.gov;  Hoffman, Scott A. shoffman@usgs.gov;  Ma
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Groundwater quality and simulation of sources of water to wells in the Marsh Creek valley at the U.S. Geological Survey Northern Appalachian Research Laboratory, Tioga County, Pennsylvania [研究报告]
U.S. Geological Survey. 2012-01-01
Risser, Dennis W. dwrisser@usgs.gov;  Breen, Kevin J. kjbreen@usgs.gov
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