Analysis of 1997-2008 Groundwater Level Changes in the Upper Deschutes Basin, Central Oregon

Analysis of 1997-2008 Groundwater Level Changes in the Upper Deschutes Basin, Central Oregon

Author: Marshall W. Gannett

Publisher: CreateSpace

Published: 2014-07-16

Total Pages: 40

ISBN-13: 9781500551469

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Groundwater-level monitoring in the upper Deschutes Basin of central Oregon from 1997 to 2008 shows water-level declines in some places that are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining (which decreases recharge), and other human influences. Between the mid-1990s and mid-2000s, water levels in the central part of the basin near Redmond steadily declined as much as 14 feet. Water levels in the Cascade Range, in contrast, rose more than 20 feet from the mid-1990s to about 2000, and then declined into the mid-2000s, with little or no net change.


Book Synopsis Analysis of 1997-2008 Groundwater Level Changes in the Upper Deschutes Basin, Central Oregon by : Marshall W. Gannett

Download or read book Analysis of 1997-2008 Groundwater Level Changes in the Upper Deschutes Basin, Central Oregon written by Marshall W. Gannett and published by CreateSpace. This book was released on 2014-07-16 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater-level monitoring in the upper Deschutes Basin of central Oregon from 1997 to 2008 shows water-level declines in some places that are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining (which decreases recharge), and other human influences. Between the mid-1990s and mid-2000s, water levels in the central part of the basin near Redmond steadily declined as much as 14 feet. Water levels in the Cascade Range, in contrast, rose more than 20 feet from the mid-1990s to about 2000, and then declined into the mid-2000s, with little or no net change.


Ground-water Hydrology of the Upper Deschutes Basin, Oregon

Ground-water Hydrology of the Upper Deschutes Basin, Oregon

Author:

Publisher:

Published: 2001

Total Pages: 92

ISBN-13:

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Book Synopsis Ground-water Hydrology of the Upper Deschutes Basin, Oregon by :

Download or read book Ground-water Hydrology of the Upper Deschutes Basin, Oregon written by and published by . This book was released on 2001 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Chemical Study of Regional Ground-water Flow and Ground-water/surface-water Interaction in the Upper Deschutes Basin, Oregon

Chemical Study of Regional Ground-water Flow and Ground-water/surface-water Interaction in the Upper Deschutes Basin, Oregon

Author: Rodney R. Caldwell

Publisher:

Published: 1998

Total Pages: 62

ISBN-13:

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Book Synopsis Chemical Study of Regional Ground-water Flow and Ground-water/surface-water Interaction in the Upper Deschutes Basin, Oregon by : Rodney R. Caldwell

Download or read book Chemical Study of Regional Ground-water Flow and Ground-water/surface-water Interaction in the Upper Deschutes Basin, Oregon written by Rodney R. Caldwell and published by . This book was released on 1998 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Simulation of regional ground-water flow in the upper Deschutes basin, Oregon

Simulation of regional ground-water flow in the upper Deschutes basin, Oregon

Author:

Publisher: DIANE Publishing

Published:

Total Pages: 95

ISBN-13: 1428984658

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Book Synopsis Simulation of regional ground-water flow in the upper Deschutes basin, Oregon by :

Download or read book Simulation of regional ground-water flow in the upper Deschutes basin, Oregon written by and published by DIANE Publishing. This book was released on with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Simulation of Regional Ground-water Flow in the Upper Deschutes Basin, Oregon

Simulation of Regional Ground-water Flow in the Upper Deschutes Basin, Oregon

Author: Marshall W. Gannett

Publisher:

Published: 2004

Total Pages: 96

ISBN-13:

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Book Synopsis Simulation of Regional Ground-water Flow in the Upper Deschutes Basin, Oregon by : Marshall W. Gannett

Download or read book Simulation of Regional Ground-water Flow in the Upper Deschutes Basin, Oregon written by Marshall W. Gannett and published by . This book was released on 2004 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon

Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon

Author: J. T. Krohelski

Publisher:

Published: 2002

Total Pages: 90

ISBN-13:

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Book Synopsis Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon by : J. T. Krohelski

Download or read book Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon written by J. T. Krohelski and published by . This book was released on 2002 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon

Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon

Author: Kenneth E. Lite

Publisher:

Published: 2002

Total Pages: 62

ISBN-13:

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Book Synopsis Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon by : Kenneth E. Lite

Download or read book Geologic Framework of the Regional Ground-water Flow System in the Upper Deschutes Basin, Oregon written by Kenneth E. Lite and published by . This book was released on 2002 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:


Model Analysis of the Hydrologic Response to Climate Change in the Upper Deschutes Basin, Oregon

Model Analysis of the Hydrologic Response to Climate Change in the Upper Deschutes Basin, Oregon

Author: Michael Scott Waibel

Publisher:

Published: 2011

Total Pages: 142

ISBN-13:

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Considerable interest lies in understanding the hydrologic response to climate change in the upper Deschutes Basin, particularly as it relates to groundwater fed streams. Much of the precipitation occurring in the recharge zone falls as snow. Consequently, the timing of runoff and recharge depend on accumulation and melting of the snowpack. Numerical modeling can provide insights into evolving hydrologic system response for resource management consideration. A daily mass and energy balance model known as the Deep Percolation Model (DPM) was developed for the basin in the 1990s. This model uses spatially distributed data and is driven with daily climate data to calculate both daily and monthly mass and energy balance for the major components of the hydrologic budget across the basin. Previously historical daily climate data from weather stations in the basin was used to drive the model. Now we use the University of Washington Climate Impact Group's 1/16th degree daily downscaled climate data to drive the DPM for forecasting until the end of the 21st century. The downscaled climate data is comprised from the mean of eight GCM simulations well suited to the Pacific Northwest. Furthermore, there are low emission and high emission scenarios associated with each ensemble member leading to two distinct means. For the entire basin progressing into the 21st century, output from the DPM using both emission scenarios as a forcing show changes in the timing of runoff and recharge as well as significant reductions in snowpack. Although the DPM calculated amounts of recharge and runoff varies between the emission scenario of the ensemble under consideration, all model output shows loss of the spring snowmelt runoff / recharge peak as time progresses. The response of the groundwater system to changing in the time and amount of recharge varies spatially. Short flow paths in the upper part of the basin are potentially more sensitive to the change in seasonality. However, geologic controls on the system cause this signal to attenuate as it propagates into the lower portions of the basin. This scale-dependent variation to the response of the groundwater system to changes in seasonality and magnitude of recharge is explored by applying DPM calculated recharge to an existing regional groundwater flow model.


Book Synopsis Model Analysis of the Hydrologic Response to Climate Change in the Upper Deschutes Basin, Oregon by : Michael Scott Waibel

Download or read book Model Analysis of the Hydrologic Response to Climate Change in the Upper Deschutes Basin, Oregon written by Michael Scott Waibel and published by . This book was released on 2011 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considerable interest lies in understanding the hydrologic response to climate change in the upper Deschutes Basin, particularly as it relates to groundwater fed streams. Much of the precipitation occurring in the recharge zone falls as snow. Consequently, the timing of runoff and recharge depend on accumulation and melting of the snowpack. Numerical modeling can provide insights into evolving hydrologic system response for resource management consideration. A daily mass and energy balance model known as the Deep Percolation Model (DPM) was developed for the basin in the 1990s. This model uses spatially distributed data and is driven with daily climate data to calculate both daily and monthly mass and energy balance for the major components of the hydrologic budget across the basin. Previously historical daily climate data from weather stations in the basin was used to drive the model. Now we use the University of Washington Climate Impact Group's 1/16th degree daily downscaled climate data to drive the DPM for forecasting until the end of the 21st century. The downscaled climate data is comprised from the mean of eight GCM simulations well suited to the Pacific Northwest. Furthermore, there are low emission and high emission scenarios associated with each ensemble member leading to two distinct means. For the entire basin progressing into the 21st century, output from the DPM using both emission scenarios as a forcing show changes in the timing of runoff and recharge as well as significant reductions in snowpack. Although the DPM calculated amounts of recharge and runoff varies between the emission scenario of the ensemble under consideration, all model output shows loss of the spring snowmelt runoff / recharge peak as time progresses. The response of the groundwater system to changing in the time and amount of recharge varies spatially. Short flow paths in the upper part of the basin are potentially more sensitive to the change in seasonality. However, geologic controls on the system cause this signal to attenuate as it propagates into the lower portions of the basin. This scale-dependent variation to the response of the groundwater system to changes in seasonality and magnitude of recharge is explored by applying DPM calculated recharge to an existing regional groundwater flow model.


Identification of Economic, Social, and Policy Factors Influencing Irrigation District Participation in Water Transactions in the Deschutes Basin

Identification of Economic, Social, and Policy Factors Influencing Irrigation District Participation in Water Transactions in the Deschutes Basin

Author: Cally A. Whitman

Publisher:

Published: 2013

Total Pages: 95

ISBN-13:

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Surface water in the Deschutes Basin of central Oregon has been largely over allocated since the early 1900s. Therefore, rapid population growth and urban demand for water in the upper Basin lead to an increased reliance on groundwater in the last three decades. The Oregon Department of Water Resources (OWRD) became concerned in the mid-1990s that groundwater pumping was negatively affecting senior water rights in the lower Deschutes Basin. A USGS study determined that there is a hydrologic connection between the upper and lower portions of the Deschutes Basin. As a result, OWRD banned further groundwater pumping without mitigation in the Basin. In an effort to allow further groundwater development and improve streamflows a coalition of local water users and State government personnel developed the Deschutes Groundwater Mitigation Program (DGMP). The DGMP is a voluntary market-based approach to water management that allows water rights holders to transfer excess water instream, which creates mitigation credits that other water users can purchase to offset new groundwater uses. Senior water rights holders in the Basin are primarily irrigation districts. This research uses the Institutional Analysis and Development (IAD) framework to determine the physical, cultural and institutional factors that influence irrigation district participation in water transactions and the relationships between different levels of decision-making in the Deschutes Basin. Research participants were asked to describe the relationships and interactions between operational decisions, policy formation decisions and constitutional decisions in the Deschutes Basin. Data was collected through open-ended interviews with Basin irrigation districts and a broad section of other water managers (State agencies, environmental advocacy groups, tribes, hydrogeological consultants, landowners and municipalities), and then qualitatively coded to identify important themes and relationships. Results from the operational level of analysis indicate that irrigation districts are primarily motivated by a fiduciary responsibility to their patrons. Water transfers and leases are seen as tools that can mitigate the negative consequences of urbanization and avoid enforcement of environmental regulations related to the reintroduction of anadromous fish into the Deschutes River. Conservation projects help boost instream flows and allow irrigation districts to improve their water supplies and reduce costs. At the policy level of analysis, research participants recognized the value of collaboration in developing shared goals and mutually beneficial water management policies. However, they expressed concerns about the functionality of regional water management organizations. Fort Vannoy v. OWRD, was a 2008 Oregon Supreme Court case that decided who has access to participate in the Deschutes Groundwater Mitigation Bank (DGMB). This was as a constitutional level decision that determined irrigation districts are holders of water right certificates, not landowners, and irrigation districts have the right to determine if excess agricultural water can be transferred to another use in the Basin. These results suggest that there are issues of access and equity within the Deschutes Basin that need to be further examined.


Book Synopsis Identification of Economic, Social, and Policy Factors Influencing Irrigation District Participation in Water Transactions in the Deschutes Basin by : Cally A. Whitman

Download or read book Identification of Economic, Social, and Policy Factors Influencing Irrigation District Participation in Water Transactions in the Deschutes Basin written by Cally A. Whitman and published by . This book was released on 2013 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface water in the Deschutes Basin of central Oregon has been largely over allocated since the early 1900s. Therefore, rapid population growth and urban demand for water in the upper Basin lead to an increased reliance on groundwater in the last three decades. The Oregon Department of Water Resources (OWRD) became concerned in the mid-1990s that groundwater pumping was negatively affecting senior water rights in the lower Deschutes Basin. A USGS study determined that there is a hydrologic connection between the upper and lower portions of the Deschutes Basin. As a result, OWRD banned further groundwater pumping without mitigation in the Basin. In an effort to allow further groundwater development and improve streamflows a coalition of local water users and State government personnel developed the Deschutes Groundwater Mitigation Program (DGMP). The DGMP is a voluntary market-based approach to water management that allows water rights holders to transfer excess water instream, which creates mitigation credits that other water users can purchase to offset new groundwater uses. Senior water rights holders in the Basin are primarily irrigation districts. This research uses the Institutional Analysis and Development (IAD) framework to determine the physical, cultural and institutional factors that influence irrigation district participation in water transactions and the relationships between different levels of decision-making in the Deschutes Basin. Research participants were asked to describe the relationships and interactions between operational decisions, policy formation decisions and constitutional decisions in the Deschutes Basin. Data was collected through open-ended interviews with Basin irrigation districts and a broad section of other water managers (State agencies, environmental advocacy groups, tribes, hydrogeological consultants, landowners and municipalities), and then qualitatively coded to identify important themes and relationships. Results from the operational level of analysis indicate that irrigation districts are primarily motivated by a fiduciary responsibility to their patrons. Water transfers and leases are seen as tools that can mitigate the negative consequences of urbanization and avoid enforcement of environmental regulations related to the reintroduction of anadromous fish into the Deschutes River. Conservation projects help boost instream flows and allow irrigation districts to improve their water supplies and reduce costs. At the policy level of analysis, research participants recognized the value of collaboration in developing shared goals and mutually beneficial water management policies. However, they expressed concerns about the functionality of regional water management organizations. Fort Vannoy v. OWRD, was a 2008 Oregon Supreme Court case that decided who has access to participate in the Deschutes Groundwater Mitigation Bank (DGMB). This was as a constitutional level decision that determined irrigation districts are holders of water right certificates, not landowners, and irrigation districts have the right to determine if excess agricultural water can be transferred to another use in the Basin. These results suggest that there are issues of access and equity within the Deschutes Basin that need to be further examined.


Adequacy of Available Hydrogeologic Data for Evaluation of Declining Ground-water Levels in the Fort Rock Basin, South-central Oregon

Adequacy of Available Hydrogeologic Data for Evaluation of Declining Ground-water Levels in the Fort Rock Basin, South-central Oregon

Author: William D. McFarland

Publisher:

Published: 1991

Total Pages: 60

ISBN-13:

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Book Synopsis Adequacy of Available Hydrogeologic Data for Evaluation of Declining Ground-water Levels in the Fort Rock Basin, South-central Oregon by : William D. McFarland

Download or read book Adequacy of Available Hydrogeologic Data for Evaluation of Declining Ground-water Levels in the Fort Rock Basin, South-central Oregon written by William D. McFarland and published by . This book was released on 1991 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: