Terrence Conlon

Terrence Conlon has over 20 years of experience in ground-water hydrology. As Studies Chief of the Oregon Water Science Center, he supervises more than 40 hydrologists and technicians conducting a wide range of scientific studies of surface water and groundwater quality and quantity, geomorphology, and aquatic ecosystems. Terrence conducted studies of ground-water availability in the Willamette and Umatilla Basins in Oregon, and in the Fox River Valley, Waukesha, Sheyboygan, and Menominee areas in Wisconsin with the USGS. Before joining the USGS, he worked as an environmental consultant and with the U.S. Environmental Protection Agency. He has undergraduate (Wesleyan University) and graduate (University of Wisconsin-Madison) degrees in geology.

Publications

Herrera, N.B., Burns, E.R., and Conlon, T.D., 2014, Simulation of groundwater flow and the interaction of groundwater and surface water in the Willamette Basin and Central Willamette subbasin, Oregon: U.S. Geological Survey Scientific Investigations Report 2014–5136, 152 p., http://dx.doi.org/10.3133/sir20145136.

Burns, E.R., Morgan, D.S., Lee, K.K., Haynes, J.V., and Conlon, T.D., 2012, Evaluation of long-term water-level declines in basalt aquifers near Mosier, Oregon: U.S. Geological Survey Scientific Investigations Report 2012–5002, 134 p. http://pubs.usgs.gov/sir/2012/5002/

Conlon, Terrence D.; Wozniak, Karl C.; Woodcock, Douglas; Herrera, Nora B.; Fisher, Bruce J.; Morgan, David S.; Lee, Karl K.; Hinkle, Stephen R., 2005. Ground-water hydrology of the Willamette basin, Oregon. Scientific Investigations Report 2005-5168, 95 p. : ill.; 1 plate [Link]

Edited by Stonestrom, David A.; Constantz, Jim, 2003. Heat as a tool for studying the movement of ground water near streams. Circular 1260, 96 p. [Link]

Conlon, T. D., 1998. Hydrogeology and simulation of ground-water flow in the Sandstone Aquifer, northeastern Wisconsin. U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], Water-Resources Investigations Report 97-4096, v, 60 p. :ill., map ;28 cm.

Conlon, T. D., 1996. Hydrogeology of the sand and gravel aquifer in the vicinity of the Wild Rose State Fish Hatchery, north-central Waushara County, Wisconsin. U.S. Geological Survey ; Branch of Information Services [distributor], Water-Resources Investigations Report 96-4213, iii, 14 p. :ill., maps ;28 cm.

Conlon, T. D., 1995. Hydrogeology of southwestern Sheboygan County, Wisconsin, in the vicinity of the Kettle Moraine Springs fish hatchery. U.S. Geological Survey ; Earth Science Information Center, Open-Files Reports Section, Water-Resources Investigations Report 94-4106, iv, 17 p. :ill., maps ;28 cm.

Krohelski, J. T.; Kammerer, P. A.; Conlon, Terrence D., 1994. Water resources of the Menominee Indian Reservation of Wisconsin. U.S. Geological Survey, Water-Resources Investigations Report 93-4053, v, 54 p. :ill., maps ;28 cm.

Batten, W. G.; Conlon, T. D., 1993. Hydrogeology of glacial deposits in a preglacial bedrock valley, Waukesha County, Wisconsin. U.S. Geological Survey ; Books and Open-File Reports Section [distributor], Water-Resources Investigations Report 92-4077, iv, 15 p. :ill., maps ;28 cm.

Other publications:

Burt, W., Conlon, T., Tolan, T.L., Wells, R.E., and Melady, J., 2009, Hydrology of the Columbia River Basalt Group in the northern Willamette Valley, Oregon, in O’Connor, J.E., Dorsey, R.J., and Madin, I.P., eds., Volcanoes to Vineyards: Geologic field trips through the dynamic landscape of the Pacific Northwest: Geological Society of America Field Guide 15, Boulder, CO, /. doi: 10.1130/2009.fld015, http://rock.geosociety.org/Bookstore/toc/fld015.htm

Conlon, T.D., Lee, K.K., and Risley, J.R., 2003, Heat tracing in streams in the Central Willamette Basin, Oregon, in Constantz, Jim, ed., Heat as a tool for studying the movement of ground water near streams: U.S. Geological Survey Circular 1260, 96 p. http://pubs.er.usgs.gov/usgspubs/cir/cir1260.

Risley, J.R. and Conlon, T.D., 2000, Miniature temperature data loggers used in the Oregon District: U.S. Geological Survey Water Resources Division Instrument News, no. 88, March, 2000.

Presentations (abstracts):

Conlon, T.D., Herrera, N., Skinner, K., Black, R., Huffman, R., and Musgrove, M., 2016, An approach to understand water quality trends in groundwater in the Columbia Plateau, Washington, Oregon, and Idaho: National Groundwater Association Connecting the Dots: Groundwater, Surface Water, and Climate Connections in the Northwest meeting, Portland, Oregon (September 8-9, 2016) (https://ngwa.confex.com/ngwa/ctd16/webprogram/meeting.html)

Herrera, N., Burns, E.,  and Conlon, T.D., 2016, Understanding effects of groundwater pumping on streams iin the Willamette Basin, Oregon: National Groundwater Association Connecting the Dots: Groundwater, Surface Water, and Climate Connections in the Northwest meeting, Portland, Oregon (September 8-9, 2016) (https://ngwa.confex.com/ngwa/ctd16/webprogram/meeting.html)

Conlon, T.D., 2015, Groundwater: An unseen resource in the Johnson Creek Watershed: 1st Johnson Creek Science Conference, Portland, Oregon (May 21, 2015) (http://jcwc.org/events/first-annual-johnson-creek-science-symposium/)

Conlon, T.D., Gall, I., and Gannett, M.W., 2014, Cooperative groundwater studies with the U.S Geological Survey: 2014 Oregon Water Resources Commission meeting, Salem, Oregon (May 29, 2014)

Conlon, T.D., 2008, Instructor of undergraduate field methods course, Portland State University, Portland, Oregon

Conlon, T.D., 2007, Ground water hydrology of the Willamette Basin, Oregon: Willamette Basin Modeling Coordinating Meeting, Nature Conservancy, Portland, Oregon (October 16, 2007)

ConlonT.D., Jacklin, T.R., and Orzol, L.L., 2007, Importance of basalt stratigraphy in hydrogeologic studies: 6^th Washington Hydrogeology Symposium, Tacoma, Washington (May 1-2, 2007)

Conlon, T.D., Orzol, L.L., Jacklin, T.R., Miller, Joseph, Wells, R.E., Tolan, T.L., and Wozniak, K.C., 2007, Compilation of basalt stratigraphy in support of geologic hazards and ground-water studies: 6^th Washington Hydrogeology Symposium, Tacoma, Washington (May 1-2, 2007)

Burns, E.R., Conlon, T.D., Wozniak, K.C., 2007, Hydraulic compartmentalization in the Columbia River Basalt Group, Umatilla Basin, Oregon: U.S. Geological Survey Pacific Northwest Science Conference, Troutdale, Oregon (January 31-February 1, 2007)

Conlon, T.D., 2006, Aquifer conditions and effect of stresses on aquifer levels: Oregon Ground Water Association Technical Meeting, Wilsonville, Oregon (March 3, 2006)

Conlon, T.D., 2005, The use of borehole geophysics in interpreting hydrologic data from wells in the Columbia River Basalt Group: Groundwater under the Pacific Northwest: Integrating research, policy and education, Stevenson, Washington, abstracts published by Washington State University Water Research Center (November 2-3, 2005)

Conlon, T.D., Orzol, L.L., Jacklin, T.R., Miller, J.P., Wells, Ray, Tolan, T.L., and Wozniak, K.C., 2005, Compilation of basalt stratigraphy in support of geologic hazards and ground-water studies: Groundwater under the Pacific Northwest: Integrating research, policy and education, Stevenson, Washington, abstracts published by Washington State University Water Research Center (November 2-3, 2005)

Conlon, T.D., Wozniak, K.C., Lee, K.K., and O’Connor, J.E., 2003, The effect of Quaternary stratigraphy on ground water and surface water resources, Willamette Valley, Oregon: Geologic Society of America Abtracts with Programs, v. 35, no. 6, September 2003.

O’Connor, Jim, Sarna-Wojcickim A.M., Wozniak, K.C., Conlon, T.D., 2003, Quaternary stratigraphic framework for hydrogeologic analysis of the Willamette Valley, Oregon: Geologic Society of America Abtracts with Programs, v. 35, no. 6, September 2003.

Conlon, T.D., and Lee, K.K., 2002, Use of water and streambed temperature to quantify ground-water and surface-water interactions: American Institute of Hydrology Annual Meeting (Portland, Oregon, October 13-17).

Conlon, T.D., and Lee, K.K., 2002, Comparison of methods to estimate seepage between streams and ground water, Willamette Valley, Oregon: 98^th Annual Meeting of Cordilleran Section of Geological Society of America, GSA Abstracts with Program, v. 34, no. 5, April, 2002.

Woodcock, D.E., Wozniak, K.C., Conlon, T.D., 2002, Influence of the Willamette Silt on ground-water flow in shallow basin-fill sediments of the Willamette Valley, Oregon: 98^th Annual Meeting of Cordilleran Section of Geological Society of America, GSA Abstracts with Program, v. 34, no. 5, April, 2002.

Wozniak, K.C., Herrera, Nora, Conlon, T.D., and Woodcock, D.E., 2002, Ground-water flow in Columbia River Basalt Group aquifers of the northern Willamette Valley, Oregon: 98^th Annual Meeting of Cordilleran Section of Geological Society of America, GSA Abstracts with Program, v. 34, no. 5, April, 2002.

Conlon, T.D. and Lee, K.K., 2001, Comparison of methods to estimate stream seepage: Amercian Geophysical Union Fall 2001 Conference, San Francisco, California, December, 2001 (poster)

Conlon, T.D., 2000, The importance and quantification of groundwater/ surfacewater interactions in ground-water availability, Willamette Basin, Oregon: Western Region Ground-water Availability Workshop (invited speaker), Reno, Nevada (November 15, 2000)

Guest lecturer at Portland State University’s hydrogeology class, November 4, 2000

Conlon, T.D. and Lee, K.K, 2000, Comparison of methods to estimate stream seepage: USGS Southwest Washington/ Oregon Science Conference, Vancouver, Washington (poster, October, 4, 2000)

Conlon, T.D., 1999, Ground-water / surface-water interactions, Willamette Valley, Oregon-- instrumentation and preliminary findings: USGS Pacific Ground-Water/Surface-Water Interaction Workshop, Portland, Oregon (June 16-16, 1999) (Oral presentation and field trip leader)

Conlon, T.D., Morgan, D.S., Hinkle, S.R., Lee, K.K., Fisher, B.J., and Wozniak, K.C., 1999, Regional hydrogeology of the Willamette Valley, Oregon: National Ground Water Association Pacific Northwest Focus Ground Water Conference, abstracts with program, p. 25 (February 17-18, 1999)

Conlon, T.D., 1996, Simulation of ground-water flow in the sandstone aquifer, Northeastern Wisconsin: American Water Resources Association Wisconsin Section Meeting, abstracts with programs, p.4 (February 29-March 1, 1996).

Conlon, T.D., 1995, Hydrogeology and numerical simulation of water levels in the Lower Fox River Valley: Wisconsin Ground Water Association Meeting (November 14, 1995).

Conlon, T.D., 1995, Use of GIS to prepare input data for and evaluate results from a finite-difference ground-water flow model in northeastern Wisconsin, in Usery, E.L., ed., Proceedings of the workshop on Mapping and Environmental Applications of GIS Data, September 28-29, 1995: Madison, Wisconsin, International Society for Photogrammetry and Remote Sensing v. 30, part 4W2, p. 68-70.

Conlon, T.D., 1995, Hydrologic importance of the Sinnipee Group in the lower Fox River Valley, Wisconsin, in Peters, C.A., ed., National Water-Quality Assessment program, Western Lake Michigan drainages--summaries of liaison committee meeting, March 28-29, 1995: U.S. Geological Survey Open- File Report 95-163, p. 51.

Conlon, T.D., 1995, Hydrologic importance of the Sinnipee Group in the lower Fox River Valley, Wisconsin: American Water Resources Association Wisconsin Section Meeting, abstracts with programs, p. 1 (March 2-3, 1995).

Conlon, T.D., 1993, The ground-water resources at Copper Falls State Park, Ashland County, Wisconsin: American Water Resources Association Wisconsin Section Meeting, abstracts with programs, p. 41 (March 11-12, 1993).

Conlon, T.D., and Karl, John, 1990, The use of seismic reflection technique to map glacial deposits in Waukesha County, Wisconsin; American Water Resources Association Wisconsin Section Meeting, abstracts with programs, p. 17 (March 8-9, 1990).