Marshall Gannett
Marshall Gannett is a Scientist Emeritus at the USGS Oregon Water Science Center.
My interests center on quantitative characterization and numerical simulation of regional-scale groundwater flow systems, quantification of ground-water and surface-water interactions, and understanding the hydrologic response to climate change and other external stresses
My recent focus has included development of a coupled groundwater and surface-water model for upper Deschutes Basin in central Oregon and on understanding the hydrogeology of groundwater-dependent ecosystems. Previous projects include development of a regional groundwater model and coupled management model for the upper Klamath Basin in Oregon and California, and basin-scale studies of the Willamette Valley in western Oregon.
Science and Products
Filter Total Items: 28
Groundwater simulation and management models for the upper Klamath Basin, Oregon and California
The upper Klamath Basin encompasses about 8,000 square miles, extending from the Cascade Range east to the Basin and Range geologic province in south-central Oregon and northern California. The geography of the basin is dominated by forested volcanic uplands separated by broad interior basins. Most of the interior basins once held broad shallow lakes and extensive wetlands, but most of these areas
Authors
Marshall W. Gannett, Brian J. Wagner, Kenneth E. Lite
Ground-Water Hydrology of the Upper Klamath Basin, Oregon and California
The upper Klamath Basin spans the California-Oregon border from the flank of the Cascade Range eastward to the Basin and Range Province, and encompasses the Klamath River drainage basin above Iron Gate Dam. Most of the basin is semiarid, but the Cascade Range and uplands in the interior and eastern parts of the basin receive on average more than 30 inches of precipitation per year. The basin has s
Authors
Marshall W. Gannett, Kenneth E. Lite, Jonathan L. La Marche, Bruce J. Fisher, Danial J. Polette
Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA
Stable isotope (??D and ??18O) signatures of three principal groundwater recharge areas in the 21,000-km2 upper Klamath Basin are used to infer recharge sources for aquifers in the interior parts of the basin. Two of the principal recharge areas, the Cascade Range on the western and southern margin of the basin and uplands along the eastern margin, are defined by mean annual precipitation that exc
Authors
P.C. Palmer, M. W. Gannett, S.R. Hinkle
An evaluation and review of water-use estimates and flow data for the Lower Klamath and Tule Lake National Wildlife Refuges, Oregon and California
The Lower Klamath and Tule Lake National Wildlife Refuges, located in the upper Klamath Basin of Oregon and California, encompass approximately 46,700 and 39,100 acres, respectively. Demand for water in the semiarid upper Klamath Basin has increased in recent years, resulting in the need to better quantify water availability and use in the refuges. This report presents an evaluation of water-use e
Authors
John C. Risley, Marshall W. Gannett
An analysis of statistical methods for seasonal flow forecasting in the Upper Klamath River basin of Oregon and California
No abstract available.
Authors
John C. Risley, Marshall W. Gannett, Jolyne K. Lea, Edwin A. Roehl
Simulation of regional ground-water flow in the Upper Deschutes Basin, Oregon
This report describes a numerical model that simulates regional ground-water flow in the upper Deschutes Basin of central Oregon. Ground water and surface water are intimately connected in the upper Deschutes Basin and most of the flow of the Deschutes River is supplied by ground water. Because of this connection, ground-water pumping and reduction of artificial recharge by lining leaking irrigati
Authors
Marshall W. Gannett, Kenneth E. Lite
Hydrogeology of the upper Deschutes Basin, central Oregon; a young basin adjacent to the Cascade volcanic arc
no abstract available.
Authors
David R. Sherrod, Marshall W. Gannett, George W. Moore
Geologic framework of the regional ground-water flow system in the Upper Deschutes Basin, Oregon
Ground water is increasingly relied upon to satisfy the needs of a growing population in the upper Deschutes Basin, Oregon. Hydrogeologic studies are being undertaken to aid in management of the ground-water resource. An understanding of the geologic factors influencing ground-water flow is basic to those investigations. The geology of the area has a direct effect on the occurrence and movement of
Authors
Kenneth E. Lite, Marshall W. Gannett
Ground-Water Hydrology of the Upper Deschutes Basin, Oregon
The upper Deschutes Basin is among the fastest growing regions in Oregon. The rapid population growth has been accompanied by increased demand for water. Surface streams, however, have been administratively closed to additional appropriation for many years, and surface water is not generally available to support new development. Consequently, ground water is being relied upon to satisfy the growth
Authors
Marshall W. Gannett, Kenneth E. Lite, David S. Morgan, Charles A. Collins
Surface-water-quality assessment of the Yakima River basin in Washington: Spatial and temporal distribution of trace elements in water, sediment, and aquatic biota, 1987-91
The report describes the distribution of trace elements in sediment, water, and aquatic biota in the Yakima River basin, Washington. Trace elements were determined from streambed sediment, suspended sediment, filtered and unfiltered water samples, aquatic insects, clams, fish livers, and fish fillets between 1987 and 1991. The distribution of trace elements in these media was related to local geol
Authors
Gregory J. Fuhrer, Daniel J. Cain, Stuart W. McKenzie, Joseph F. Rinella, J. Kent Crawford, Kenneth A. Skach, Michelle I. Hornberger, Marshall W. Gannett
Surface-water-quality assessment of the Yakima River basin, Washington: Overview of major findings, 1987-91
Surface-water-quality conditions were assessed in the Yakima River Basin, which drains 6,155 square miles of mostly forested, range, and agricultural land in Washington. The Yakima River Basin is one of the most intensively farmed and irrigated areas in the United States, and is often referred to as the “Nation’s Fruitbowl.” Natural and anthropogenic sources of contaminants and flow regulation con
Authors
Jennifer L. Morace, Gregory J. Fuhrer, Joseph F. Rinella, Stuart W. McKenzie, Marshall W. Gannett, Karen L. Bramblett, Ted R. Pogue, Kenneth A. Skach, Sandra S. Embrey, Thomas F. Cuffney, Michael R. Meador, Stephen D. Porter, Martin E. Gurtz
Geologic framework of the Willamette Lowland aquifer system, Oregon and Washington
This report describes the Cenozoic geology of the Willamette Lowland physiographic province, and the geologic framework of the regional ground-water flow system. Five regional hydrogeologic units are identified and described. The report includes maps showing the altitude of the top and the thickness of each hydrogeologic unit.
Authors
Marshall W. Gannett, Rodney R. Caldwell
Science and Products
- Publications
Filter Total Items: 28
Groundwater simulation and management models for the upper Klamath Basin, Oregon and California
The upper Klamath Basin encompasses about 8,000 square miles, extending from the Cascade Range east to the Basin and Range geologic province in south-central Oregon and northern California. The geography of the basin is dominated by forested volcanic uplands separated by broad interior basins. Most of the interior basins once held broad shallow lakes and extensive wetlands, but most of these areasAuthorsMarshall W. Gannett, Brian J. Wagner, Kenneth E. LiteGround-Water Hydrology of the Upper Klamath Basin, Oregon and California
The upper Klamath Basin spans the California-Oregon border from the flank of the Cascade Range eastward to the Basin and Range Province, and encompasses the Klamath River drainage basin above Iron Gate Dam. Most of the basin is semiarid, but the Cascade Range and uplands in the interior and eastern parts of the basin receive on average more than 30 inches of precipitation per year. The basin has sAuthorsMarshall W. Gannett, Kenneth E. Lite, Jonathan L. La Marche, Bruce J. Fisher, Danial J. PoletteIsotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA
Stable isotope (??D and ??18O) signatures of three principal groundwater recharge areas in the 21,000-km2 upper Klamath Basin are used to infer recharge sources for aquifers in the interior parts of the basin. Two of the principal recharge areas, the Cascade Range on the western and southern margin of the basin and uplands along the eastern margin, are defined by mean annual precipitation that excAuthorsP.C. Palmer, M. W. Gannett, S.R. HinkleAn evaluation and review of water-use estimates and flow data for the Lower Klamath and Tule Lake National Wildlife Refuges, Oregon and California
The Lower Klamath and Tule Lake National Wildlife Refuges, located in the upper Klamath Basin of Oregon and California, encompass approximately 46,700 and 39,100 acres, respectively. Demand for water in the semiarid upper Klamath Basin has increased in recent years, resulting in the need to better quantify water availability and use in the refuges. This report presents an evaluation of water-use eAuthorsJohn C. Risley, Marshall W. GannettAn analysis of statistical methods for seasonal flow forecasting in the Upper Klamath River basin of Oregon and California
No abstract available.AuthorsJohn C. Risley, Marshall W. Gannett, Jolyne K. Lea, Edwin A. RoehlSimulation of regional ground-water flow in the Upper Deschutes Basin, Oregon
This report describes a numerical model that simulates regional ground-water flow in the upper Deschutes Basin of central Oregon. Ground water and surface water are intimately connected in the upper Deschutes Basin and most of the flow of the Deschutes River is supplied by ground water. Because of this connection, ground-water pumping and reduction of artificial recharge by lining leaking irrigatiAuthorsMarshall W. Gannett, Kenneth E. LiteHydrogeology of the upper Deschutes Basin, central Oregon; a young basin adjacent to the Cascade volcanic arc
no abstract available.AuthorsDavid R. Sherrod, Marshall W. Gannett, George W. MooreGeologic framework of the regional ground-water flow system in the Upper Deschutes Basin, Oregon
Ground water is increasingly relied upon to satisfy the needs of a growing population in the upper Deschutes Basin, Oregon. Hydrogeologic studies are being undertaken to aid in management of the ground-water resource. An understanding of the geologic factors influencing ground-water flow is basic to those investigations. The geology of the area has a direct effect on the occurrence and movement ofAuthorsKenneth E. Lite, Marshall W. GannettGround-Water Hydrology of the Upper Deschutes Basin, Oregon
The upper Deschutes Basin is among the fastest growing regions in Oregon. The rapid population growth has been accompanied by increased demand for water. Surface streams, however, have been administratively closed to additional appropriation for many years, and surface water is not generally available to support new development. Consequently, ground water is being relied upon to satisfy the growthAuthorsMarshall W. Gannett, Kenneth E. Lite, David S. Morgan, Charles A. CollinsSurface-water-quality assessment of the Yakima River basin in Washington: Spatial and temporal distribution of trace elements in water, sediment, and aquatic biota, 1987-91
The report describes the distribution of trace elements in sediment, water, and aquatic biota in the Yakima River basin, Washington. Trace elements were determined from streambed sediment, suspended sediment, filtered and unfiltered water samples, aquatic insects, clams, fish livers, and fish fillets between 1987 and 1991. The distribution of trace elements in these media was related to local geolAuthorsGregory J. Fuhrer, Daniel J. Cain, Stuart W. McKenzie, Joseph F. Rinella, J. Kent Crawford, Kenneth A. Skach, Michelle I. Hornberger, Marshall W. GannettSurface-water-quality assessment of the Yakima River basin, Washington: Overview of major findings, 1987-91
Surface-water-quality conditions were assessed in the Yakima River Basin, which drains 6,155 square miles of mostly forested, range, and agricultural land in Washington. The Yakima River Basin is one of the most intensively farmed and irrigated areas in the United States, and is often referred to as the “Nation’s Fruitbowl.” Natural and anthropogenic sources of contaminants and flow regulation conAuthorsJennifer L. Morace, Gregory J. Fuhrer, Joseph F. Rinella, Stuart W. McKenzie, Marshall W. Gannett, Karen L. Bramblett, Ted R. Pogue, Kenneth A. Skach, Sandra S. Embrey, Thomas F. Cuffney, Michael R. Meador, Stephen D. Porter, Martin E. GurtzGeologic framework of the Willamette Lowland aquifer system, Oregon and Washington
This report describes the Cenozoic geology of the Willamette Lowland physiographic province, and the geologic framework of the regional ground-water flow system. Five regional hydrogeologic units are identified and described. The report includes maps showing the altitude of the top and the thickness of each hydrogeologic unit.AuthorsMarshall W. Gannett, Rodney R. Caldwell