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Staff Profiles

Terrence Conlon (Former Employee)

Regional Science Coordinator

Northwest-Pacific Islands Region

Science and Products

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January 22, 2020

Evaluation of hydrologic impact of an irrigation curtailment program in the Upper Klamath Lake Basin using Landsat satellite data

Upper Klamath Lake (UKL) is the source of the Klamath river that flows through southern Oregon and northern California. The UKL basin is home to two endangered species and provides water for 81,000+ ha (200,000+ acres) of irrigation on the United States Bureau of Reclamation (USBR) Klamath Project located downstream of the UKL basin. Irrigated agriculture also occurs along the tributaries to UKL.

Authors

Naga Manohar Velpuri, Gabriel Senay, Matthew Schauer, C. Amanda Garcia, Ramesh Singh, MacKenzie Friedrichs, Stefanie Bohms, Jonathan V. Haynes, Terrence D. Conlon

Water Resources Mission Area, Earth Resources Observation and Science (EROS) Center , Oregon Water Science Center

May 31, 2017

Hydrogeologic framework and selected components of the groundwater budget for the upper Umatilla River Basin, Oregon

Executive SummaryThis report presents a summary of the hydrogeology of the upper Umatilla River Basin, Oregon, based on characterization of the hydrogeologic framework, horizontal and vertical directions of groundwater flow, trends in groundwater levels, and components of the groundwater budget. The conceptual model of the groundwater flow system integrates available data and information on the gr

Authors

Nora B. Herrera, Kate Ely, Smita Mehta, Adam J. Stonewall, John C. Risley, Stephen R. Hinkle, Terrence D. Conlon

Water Resources Mission Area, Oregon Water Science Center

October 6, 2014

Simulation of groundwater flow and the interaction of groundwater and surface water in the Willamette Basin and Central Willamette subbasin, Oregon

Full appropriation of tributary streamflow during summer, a growing population, and agricultural needs are increasing the demand for groundwater in the Willamette Basin. Greater groundwater use could diminish streamflow and create seasonal and long-term declines in groundwater levels. The U.S. Geological Survey (USGS) and the Oregon Water Resources Department (OWRD) cooperated in a study to develo

Authors

Nora B. Herrera, Erick R. Burns, Terrence D. Conlon

Water Resources Mission Area, Oregon Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center

March 2, 2012

Evaluation of long-term water-level declines in basalt aquifers near Mosier, Oregon

The Mosier area lies along the Columbia River in northwestern Wasco County between the cities of Hood River and The Dalles, Oregon. Major water uses in the area are irrigation, municipal supply for the city of Mosier, and domestic supply for rural residents. The primary source of water is groundwater from the Columbia River Basalt Group (CRBG) aquifers that underlie the area. Concerns regarding th

Authors

Erick R. Burns, David S. Morgan, Karl K. Lee, Jonathan V. Haynes, Terrence D. Conlon

Water Resources Mission Area, Oregon Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center

November 11, 2009

Hydrogeology of the Columbia River Basalt Group in the northern Willamette Valley

No abstract available.

Authors

W Burt, Terrence D. Conlon, T.L. Tolan, R. E. Wells, J Melady

Geology, Minerals, Energy, and Geophysics Science Center

November 25, 2005

Ground-water hydrology of the Willamette basin, Oregon

The Willamette Basin encompasses a drainage of 12,000 square miles and is home to approximately 70 percent of Oregon's population. Agriculture and population are concentrated in the lowland, a broad, relatively flat area between the Coast and Cascade Ranges. Annual rainfall is high, with about 80 percent of precipitation falling from October through March and less than 5 percent falling in July an

Authors

Terrence D. Conlon, Karl C. Wozniak, Douglas Woodcock, Nora B. Herrera, Bruce J. Fisher, David S. Morgan, Karl K. Lee, Stephen R. Hinkle

Water Resources Mission Area, Oregon Water Science Center

December 1, 2003

Heat as a tool for studying the movement of ground water near streams

Stream temperature has long been recognized as an important water quality parameter. Temperature plays a key role in the health of a stream’s aquatic life, both in the water column and in the benthic habitat of streambed sediments. Many fish are sensitive to temperature. For example, anadromous salmon require specific temperature ranges to successfully develop, migrate, and spawn [see Halupka and

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1998

Hydrogeology and simulation of ground-water flow in the Sandstone Aquifer, northeastern Wisconsin

Municipalities in the lower Fox River Valley in northeastern Wisconsin obtain their water supply from a series of permeable sandstones and carbonates of Cambrian to Ordovician age. Withdrawals from this "sandstone aquifer" have resulted in water levels declining at a rate of more than 2 feet per year. The U.S. Geological Survey, in cooperation with the major water utilities in the Fox Cities area,

Authors

T.D. Conlon

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1996

Hydrogeology of the sand and gravel aquifer in the vicinity of the Wild Rose State Fish Hatchery, north-central Waushara County, Wisconsin

The sand and gravel aquifer in the vicinity of the Wild Rose State Fish Hatchery is approximately 200 feet thick. The aquifer consists mostly of sand that was deposited as glacial till and outwash approximately 15,000 years ago. Hydraulic conductivity of the aquifer at the hatchery, calculated from slug tests, is approximately 18 feet per day. Ground water recharges west of the hatch ery, flows fr

Authors

T.D. Conlon

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1995

Hydrogeology of southwestern Sheboygan County, Wisconsin, in the vicinity of the Kettle Moraine Springs fish hatchery

This report describes the hydrogeology of the dolomite aquifer of Silurian age and its relation to springs in a study area in southwestern Sheboygan County, Wisconsin. The study was conducted at the Kettle Moraine Springs fish hatchery in cooperation with the Wisconsin Department of Natural Resources. The dolomite aquifer is overlain by more than 60 feet of glacial deposits. Fine-grained glacial d

Authors

T.D. Conlon

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1994

Water resources of the Menominee Indian Reservation of Wisconsin

Water resources of the Menominee Indian Reservation, Wisconsin, were investigated during the period October 1981 through September 1987. The report presents baseline data and some interpretation of ground- and surface-water hydrology and quality of the Reservation. The area stratigraphy consists of basal Precambrian crystalline bedrock and overlying till and sand and gravel deposits. In the Reserv

Authors

J. T. Krohelski, P.A. Kammerer, Terrence D. Conlon

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1993

Hydrogeology of glacial deposits in a preglacial bedrock valley, Waukesha County, Wisconsin

This report describes the areal extent, thickness, and hydraulic properties of glacial deposits in a preglacial bedrock valley south of the city of Waukesha in southeastern Wisconsin. In the 40- square-mile study area, the preglacial bedrock valley underlies an area across which the Fox River flows. A previous regional study of the area indicated that extensive glacial sand and gravel deposits may

Authors

W. G. Batten, T.D. Conlon

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Label

link

December 15, 2017

Groundwater of the Umatilla River Basin

Water management in the arid Umatilla Basin has become increasingly complex in recent years. Competing demands from society for generating hydro-electric power, maintaining and restoring fisheries, restoring watershed health, providing water for growing communities, and increasing agricultural production through irrigation, have put water resources in the Umatilla Basin and throughout the...

Oregon Water Science Center

link

December 15, 2017

Groundwater of the Umatilla River Basin

Learn More

link

August 30, 2017

Upper Klamath Basin Groundwater Studies

Since the late 1990s the USGS has worked to characterize the regional groundwater hydrology of the upper Klamath Basin. Research focuses on collecting data to help evaluate the state of the groundwater system and its response to external stresses, and to develop computer models to provide insights useful for water management. These efforts build on earlier USGS studies in the basin going back to...

Oregon Water Science Center

link

August 30, 2017

Upper Klamath Basin Groundwater Studies

Learn More

link

May 16, 2017

Groundwater in the Upper Deschutes Basin, Oregon

Groundwater monitoring in the Deschutes Basin shows water-level declines are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining, and other human influences.

Oregon Water Science Center

link

May 16, 2017

Groundwater in the Upper Deschutes Basin, Oregon

Learn More

link

October 10, 2000

Willamette Basin Groundwater Study

The U.S. Geological Survey (USGS) studies the water resources of the Willamette River Basin. Here you will find a description of the study, as well as information and data resulting from this work.

Oregon Water Science Center

link

October 10, 2000

Willamette Basin Groundwater Study

The U.S. Geological Survey (USGS) studies the water resources of the Willamette River Basin. Here you will find a description of the study, as well as information and data resulting from this work.

Learn More

Label

January 9, 2020

Assessing the impact of irrigation curtailment using Landsat satellite data: A case study in the Upper Klamath Lake basin

The associated geotiff rasters represents the total actual evapotranspiration (ETa) from June through September for the years 2004, 2006, 2008-2010, and 2013-2016 for the entire Klamath Basin in southern Oregon. The ETa was created using Landsat imagery and the Operational Simplified Surface Energy Balance (SSEBop) model to estimate actual ET and the Python scripts to complete that process is also

Earth Resources Observation and Science (EROS) Center

Label

link

August 29, 2023

USGS researchers and collaborators successfully host the first Pacific Northwest Native American Workshop on Bats

Dr. Ernest Valdez of USGS-FORT, New Mexico Landscapes Field Station along with USGS-Northwest Pacific Islands Region, Native American Fish and...

Read Article

link

July 31, 2023

USGS Researchers are Organizing the first Pacific Northwest Native American Workshop on Bats in Toppenish, WA, August 8-9, 2023.

Dr. Ernest Valdez of FORT, New Mexico Landscapes Field Station along with researchers from the USGS-Northwest-Pacific Islands Region, Native American...

Read Article

link

April 13, 2016

New Willamette River Flood Inundation Maps to Aid Residents and Emergency Managers

New flood inundation maps focused on the Coast Fork Willamette River near Goshen, Oregon were published online Wednesday by the U.S. Geological Survey...

Read Article

Science and Products

Publications

Label

January 22, 2020
Evaluation of hydrologic impact of an irrigation curtailment program in the Upper Klamath Lake Basin using Landsat satellite data

Upper Klamath Lake (UKL) is the source of the Klamath river that flows through southern Oregon and northern California. The UKL basin is home to two endangered species and provides water for 81,000+ ha (200,000+ acres) of irrigation on the United States Bureau of Reclamation (USBR) Klamath Project located downstream of the UKL basin. Irrigated agriculture also occurs along the tributaries to UKL.

Authors

Naga Manohar Velpuri, Gabriel Senay, Matthew Schauer, C. Amanda Garcia, Ramesh Singh, MacKenzie Friedrichs, Stefanie Bohms, Jonathan V. Haynes, Terrence D. Conlon

By

Water Resources Mission Area, Earth Resources Observation and Science (EROS) Center , Oregon Water Science Center

May 31, 2017
Hydrogeologic framework and selected components of the groundwater budget for the upper Umatilla River Basin, Oregon

Executive SummaryThis report presents a summary of the hydrogeology of the upper Umatilla River Basin, Oregon, based on characterization of the hydrogeologic framework, horizontal and vertical directions of groundwater flow, trends in groundwater levels, and components of the groundwater budget. The conceptual model of the groundwater flow system integrates available data and information on the gr

Authors

Nora B. Herrera, Kate Ely, Smita Mehta, Adam J. Stonewall, John C. Risley, Stephen R. Hinkle, Terrence D. Conlon

By

Water Resources Mission Area, Oregon Water Science Center

October 6, 2014
Simulation of groundwater flow and the interaction of groundwater and surface water in the Willamette Basin and Central Willamette subbasin, Oregon

Full appropriation of tributary streamflow during summer, a growing population, and agricultural needs are increasing the demand for groundwater in the Willamette Basin. Greater groundwater use could diminish streamflow and create seasonal and long-term declines in groundwater levels. The U.S. Geological Survey (USGS) and the Oregon Water Resources Department (OWRD) cooperated in a study to develo

Authors

Nora B. Herrera, Erick R. Burns, Terrence D. Conlon

By

Water Resources Mission Area, Oregon Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center

March 2, 2012
Evaluation of long-term water-level declines in basalt aquifers near Mosier, Oregon

The Mosier area lies along the Columbia River in northwestern Wasco County between the cities of Hood River and The Dalles, Oregon. Major water uses in the area are irrigation, municipal supply for the city of Mosier, and domestic supply for rural residents. The primary source of water is groundwater from the Columbia River Basalt Group (CRBG) aquifers that underlie the area. Concerns regarding th

Authors

Erick R. Burns, David S. Morgan, Karl K. Lee, Jonathan V. Haynes, Terrence D. Conlon

By

Water Resources Mission Area, Oregon Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center

November 11, 2009
Hydrogeology of the Columbia River Basalt Group in the northern Willamette Valley

No abstract available.

Authors

W Burt, Terrence D. Conlon, T.L. Tolan, R. E. Wells, J Melady

By

Geology, Minerals, Energy, and Geophysics Science Center

November 25, 2005
Ground-water hydrology of the Willamette basin, Oregon

The Willamette Basin encompasses a drainage of 12,000 square miles and is home to approximately 70 percent of Oregon's population. Agriculture and population are concentrated in the lowland, a broad, relatively flat area between the Coast and Cascade Ranges. Annual rainfall is high, with about 80 percent of precipitation falling from October through March and less than 5 percent falling in July an

Authors

Terrence D. Conlon, Karl C. Wozniak, Douglas Woodcock, Nora B. Herrera, Bruce J. Fisher, David S. Morgan, Karl K. Lee, Stephen R. Hinkle

By

Water Resources Mission Area, Oregon Water Science Center

December 1, 2003
Heat as a tool for studying the movement of ground water near streams

Stream temperature has long been recognized as an important water quality parameter. Temperature plays a key role in the health of a stream’s aquatic life, both in the water column and in the benthic habitat of streambed sediments. Many fish are sensitive to temperature. For example, anadromous salmon require specific temperature ranges to successfully develop, migrate, and spawn [see Halupka and

By

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1998
Hydrogeology and simulation of ground-water flow in the Sandstone Aquifer, northeastern Wisconsin

Municipalities in the lower Fox River Valley in northeastern Wisconsin obtain their water supply from a series of permeable sandstones and carbonates of Cambrian to Ordovician age. Withdrawals from this "sandstone aquifer" have resulted in water levels declining at a rate of more than 2 feet per year. The U.S. Geological Survey, in cooperation with the major water utilities in the Fox Cities area,

Authors

T.D. Conlon

By

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1996
Hydrogeology of the sand and gravel aquifer in the vicinity of the Wild Rose State Fish Hatchery, north-central Waushara County, Wisconsin

The sand and gravel aquifer in the vicinity of the Wild Rose State Fish Hatchery is approximately 200 feet thick. The aquifer consists mostly of sand that was deposited as glacial till and outwash approximately 15,000 years ago. Hydraulic conductivity of the aquifer at the hatchery, calculated from slug tests, is approximately 18 feet per day. Ground water recharges west of the hatch ery, flows fr

Authors

T.D. Conlon

By

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1995
Hydrogeology of southwestern Sheboygan County, Wisconsin, in the vicinity of the Kettle Moraine Springs fish hatchery

This report describes the hydrogeology of the dolomite aquifer of Silurian age and its relation to springs in a study area in southwestern Sheboygan County, Wisconsin. The study was conducted at the Kettle Moraine Springs fish hatchery in cooperation with the Wisconsin Department of Natural Resources. The dolomite aquifer is overlain by more than 60 feet of glacial deposits. Fine-grained glacial d

Authors

T.D. Conlon

By

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1994
Water resources of the Menominee Indian Reservation of Wisconsin

Water resources of the Menominee Indian Reservation, Wisconsin, were investigated during the period October 1981 through September 1987. The report presents baseline data and some interpretation of ground- and surface-water hydrology and quality of the Reservation. The area stratigraphy consists of basal Precambrian crystalline bedrock and overlying till and sand and gravel deposits. In the Reserv

Authors

J. T. Krohelski, P.A. Kammerer, Terrence D. Conlon

By

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1993
Hydrogeology of glacial deposits in a preglacial bedrock valley, Waukesha County, Wisconsin

This report describes the areal extent, thickness, and hydraulic properties of glacial deposits in a preglacial bedrock valley south of the city of Waukesha in southeastern Wisconsin. In the 40- square-mile study area, the preglacial bedrock valley underlies an area across which the Fox River flows. A previous regional study of the area indicated that extensive glacial sand and gravel deposits may

Authors

W. G. Batten, T.D. Conlon

By

Water Resources Mission Area, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
Science

Label

link

December 15, 2017
Groundwater of the Umatilla River Basin

Water management in the arid Umatilla Basin has become increasingly complex in recent years. Competing demands from society for generating hydro-electric power, maintaining and restoring fisheries, restoring watershed health, providing water for growing communities, and increasing agricultural production through irrigation, have put water resources in the Umatilla Basin and throughout the...

By

Oregon Water Science Center

link

December 15, 2017

Groundwater of the Umatilla River Basin

Water management in the arid Umatilla Basin has become increasingly complex in recent years. Competing demands from society for generating hydro-electric power, maintaining and restoring fisheries, restoring watershed health, providing water for growing communities, and increasing agricultural production through irrigation, have put water resources in the Umatilla Basin and throughout the...

Learn More

link

August 30, 2017
Upper Klamath Basin Groundwater Studies

Since the late 1990s the USGS has worked to characterize the regional groundwater hydrology of the upper Klamath Basin. Research focuses on collecting data to help evaluate the state of the groundwater system and its response to external stresses, and to develop computer models to provide insights useful for water management. These efforts build on earlier USGS studies in the basin going back to...

By

Oregon Water Science Center

link

August 30, 2017

Upper Klamath Basin Groundwater Studies

Since the late 1990s the USGS has worked to characterize the regional groundwater hydrology of the upper Klamath Basin. Research focuses on collecting data to help evaluate the state of the groundwater system and its response to external stresses, and to develop computer models to provide insights useful for water management. These efforts build on earlier USGS studies in the basin going back to...

Learn More

link

May 16, 2017
Groundwater in the Upper Deschutes Basin, Oregon

Groundwater monitoring in the Deschutes Basin shows water-level declines are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining, and other human influences.

By

Oregon Water Science Center

link

May 16, 2017

Groundwater in the Upper Deschutes Basin, Oregon

Groundwater monitoring in the Deschutes Basin shows water-level declines are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining, and other human influences.

Learn More

link

October 10, 2000
Willamette Basin Groundwater Study

The U.S. Geological Survey (USGS) studies the water resources of the Willamette River Basin. Here you will find a description of the study, as well as information and data resulting from this work.

By

Oregon Water Science Center

link

October 10, 2000

Willamette Basin Groundwater Study

The U.S. Geological Survey (USGS) studies the water resources of the Willamette River Basin. Here you will find a description of the study, as well as information and data resulting from this work.

Learn More
Data

Label

January 9, 2020
Assessing the impact of irrigation curtailment using Landsat satellite data: A case study in the Upper Klamath Lake basin

The associated geotiff rasters represents the total actual evapotranspiration (ETa) from June through September for the years 2004, 2006, 2008-2010, and 2013-2016 for the entire Klamath Basin in southern Oregon. The ETa was created using Landsat imagery and the Operational Simplified Surface Energy Balance (SSEBop) model to estimate actual ET and the Python scripts to complete that process is also

By

Earth Resources Observation and Science (EROS) Center
News

Label

link

August 29, 2023

USGS researchers and collaborators successfully host the first Pacific Northwest Native American Workshop on Bats

Dr. Ernest Valdez of USGS-FORT, New Mexico Landscapes Field Station along with USGS-Northwest Pacific Islands Region, Native American Fish and...

Read Article

link

July 31, 2023

USGS Researchers are Organizing the first Pacific Northwest Native American Workshop on Bats in Toppenish, WA, August 8-9, 2023.

Dr. Ernest Valdez of FORT, New Mexico Landscapes Field Station along with researchers from the USGS-Northwest-Pacific Islands Region, Native American...

Read Article

link

April 13, 2016

New Willamette River Flood Inundation Maps to Aid Residents and Emergency Managers

New flood inundation maps focused on the Coast Fork Willamette River near Goshen, Oregon were published online Wednesday by the U.S. Geological Survey...

Read Article