| Ground Water Studies and Publications |
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| Ground Water Studies |
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Deschutes Basin Ground Water Study
This ground water investigation was a cooperative project between the U.S.Geological Survey and the Oregon Water Resources Department with contributions from local governments. The study focused on the Upper Deschutes Basin and provided a quantitative understanding of surface-water and ground-water interactions and basin ground-water hydrology for resource managers, planners, and the general public. Abstracts and published reports are available online.
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Ground Water in the Eastern Lost River Sub-Basin, Langell, Yonna, Swan Lake, and Poe Valleys of Southeastern Klamath County, Oregon (2004)
In 1996, the Oregon Water Resources Department (OWRD) issued thirty-two alternative dispute resolution (ADR) ground water permits for primary and supplemental irrigation in the 920 square mile, semi-arid eastern Lost River sub-basin east of Klamath Falls, Oregon. The permit conditions required the Department to assess the potential impact of each permit upon the Lost River and Bonanza Big Springs and to assess the long-term ground water level trends in the sub-basin. The assessment required a technical investigation to advance the state of knowledge about the ground water system in the sub-basin. The report presents the technical investigation and the assessment results.
OWRD is using the results presented in the report and Oregon water law to determine whether the ADR permits can mature to certificates. Additionally, OWRD is using the technical investigation and the assessment results to determine the fate of future applications for ground water use in the sub-basin.
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Ground-Water Hydrology of the Upper Klamath Basin, Oregon and California (2007)
The upper Klamath Basin spans the Oregon-California border from the flank of the Cascade Range eastward to the high desert. Although much of the basin is high desert, the region receives considerable runoff from the Cascade Range and uplands to the east. As a result, the area has numerous perennial streams, large shallow lakes, and extensive wetlands, and the Klamath River has historically supported anadromous fish runs. A shift in water management has resulted in increased demands for water. Owing to the limitations of other options, the increased demand has resulted in increased use of ground water in the basin. The problems associated with increased demands are exacerbated by drought.
In 1999, the U.S. Geological Survey (USGS) and the Oregon Water Resources Department (OWRD) began a cooperative study to (1) quantitatively characterize the regional ground-water flow system in the upper Klamath Basin and (2) develop a computer model to simulate regional ground-water flow that can be used to help understand the resource and test management scenarios. This report summarizes efforts to quantitatively characterize the ground-water hydrology.
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Upper Klamath Basin Ground Water Study
Increasing demands on surface-water supplies in the Upper Klamath Basin, including those for aquatic wildlife and other in-stream uses, have resulted in increased development of ground water for purposes ranging from crop irrigation to surface-water flow augmentation. Quantifying the ground-water hydrology of the Upper Klamath Basin is a necessary step to assure wise management of the resource and to sustain ground-water supplies for the diverse uses in the basin. Project information and data are available online.
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Willamette Basin Ground Water Study
Because surface-water sources are largely allocated in the Willamette Basin, ground-water sources are being developed to meet a growing water demand. Concerns regarding dwindling ground-water supplies and stream depletion due to ground-water development resulted in this cooperative ground-water investigation. The study evaluates the regional flow of ground water in the basin with a focused look at the timing and magnitude of stream depletion and seasonal ground-water fluctuations caused by ground-water development in the basin-fill sediments. Project data and reports are available online.
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| Ground Water Publications |
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Ground Water Supplies in the Willamette Basin Oct 2002 (PDF 3.2 MB)
Developed by Oregon Water Resources Department and Oregon Department of Land Conservation and Development, this report provides a synopsis of our current understanding of ground water supplies in the Willamette Valley and an outline of tools available to address ground water supply issues at the state and local level.
Umatilla Ground Water Supplies Report April 2003 (PDF 2.4 MB)
From the workshop held in Pendleton, Oregon, on April 3, 2003 titled: The Future of Ground Water Supplies and Management in the Umatilla Basin.
Land Survey Mapping Assistant (PDF 44 KB)
A document that explains how Townships are divided.
Section ID Cheat Sheet (PDF 39 KB)
A cheat sheet describing the section indexing.
Pump Test Requirements For Groundwater Right Holders (PDF 98 KB)
Many well owners in Oregon are required by law to conduct pump tests of their wells. This law was enacted to provide important statewide information on ground water resources and to provide an early warning of ground water aquifer depletion.
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