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Eastern Snake River Plain Aquifer Model calibration report. Model design and calibration document number DDM-008 Item Info

Design documents are a series of technical papers addressing specific design topics on the eastern Snake River Plain Aquifer Model upgrade. Each design document will contain the following information: topic of the design document, how that topic fits into the whole project, which design alternatives were considered and which design alternative is proposed. In draft form, design documents are used to present proposed designs to reviewers. Reviewers are encouraged to submit suggested alternatives and comments to the design document. Reviewers include all members of the Eastern Snake Hydrologic Modeling (ESHM) Committee as well as selected experts outside of the committee. The design document author will consider all suggestions from reviewers, update the draft design document, and submit the design document to the SRPAM Model Upgrade Program Manager. The Program Manager will make a final decision regarding the technical design of the described component. The author will modify the design document and publish the document in its final form in .pdf format on the SRPAM Model Upgrade web site. Final model documentation will include all of the design documents, edited to ensure that the "as-built" condition is appropriately represented. The Eastern Snake Plain aquifer consists of a series of basalt flows with interlayered pyroclastic and sedimentary material. It extends across southern Idaho in a swath about 170 mi long and 60 mi wide. The Eastern Snake Plain aquifer encompasses the broad depression extending from King Hill in the southwest to Ashton in the northeast. Its lateral boundaries are formed by contacts with less permeable rocks at the margins of the plain.Numerous investigators have modeled all or parts of the Eastern Snake Plain aquifer. Two models of particular interest include one constructed by The University of Idaho for the Idaho Department of Water Resources (IDWR) described in Cosgrove and others (1999) and one by the U.S. Geological Survey (Garabedian, 1992). The Garabedian model was constructed largely as an investigative tool to explore concepts of regional ground water flow and improve scientific understanding of the aquifer. The IDWR model was designed primarily as an aquifer planning and management tool. The modeling effort this document supports, the Eastern Snake Plain Aquifer Model Enhancement Project, was undertaken to facilitate conjunctive management of the Eastern Snake Plain aquifer. Thus, the model must necessarily represent both the Snake River and the Eastern Snake Plain aquifer as accurately as possible. The modeling process includes establishing calibration targets, identifying adjustable parameters, and quantifying known model inputs. For this effort, the calibration targets include aquifer water levels and Snake River reach gains and losses. The adjustable parameters include aquifer transmissivity, specific yield, and riverbed and drain conductance. The known inputs include precipitation, evapotranspiration, surface water irrigation, ground water pumping, seepage from rivers other than the Snake River, and underflow from tributary aquifers.

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Title:
Eastern Snake River Plain Aquifer Model calibration report. Model design and calibration document number DDM-008
Authors:
Wylie, Allan; Doherty, John
Date Created (ISO Standard):
2005-02-24
Description:
Design documents are a series of technical papers addressing specific design topics on the eastern Snake River Plain Aquifer Model upgrade. Each design document will contain the following information: topic of the design document, how that topic fits into the whole project, which design alternatives were considered and which design alternative is proposed. In draft form, design documents are used to present proposed designs to reviewers. Reviewers are encouraged to submit suggested alternatives and comments to the design document. Reviewers include all members of the Eastern Snake Hydrologic Modeling (ESHM) Committee as well as selected experts outside of the committee. The design document author will consider all suggestions from reviewers, update the draft design document, and submit the design document to the SRPAM Model Upgrade Program Manager. The Program Manager will make a final decision regarding the technical design of the described component. The author will modify the design document and publish the document in its final form in .pdf format on the SRPAM Model Upgrade web site. Final model documentation will include all of the design documents, edited to ensure that the "as-built" condition is appropriately represented. The Eastern Snake Plain aquifer consists of a series of basalt flows with interlayered pyroclastic and sedimentary material. It extends across southern Idaho in a swath about 170 mi long and 60 mi wide. The Eastern Snake Plain aquifer encompasses the broad depression extending from King Hill in the southwest to Ashton in the northeast. Its lateral boundaries are formed by contacts with less permeable rocks at the margins of the plain.Numerous investigators have modeled all or parts of the Eastern Snake Plain aquifer. Two models of particular interest include one constructed by The University of Idaho for the Idaho Department of Water Resources (IDWR) described in Cosgrove and others (1999) and one by the U.S. Geological Survey (Garabedian, 1992). The Garabedian model was constructed largely as an investigative tool to explore concepts of regional ground water flow and improve scientific understanding of the aquifer. The IDWR model was designed primarily as an aquifer planning and management tool. The modeling effort this document supports, the Eastern Snake Plain Aquifer Model Enhancement Project, was undertaken to facilitate conjunctive management of the Eastern Snake Plain aquifer. Thus, the model must necessarily represent both the Snake River and the Eastern Snake Plain aquifer as accurately as possible. The modeling process includes establishing calibration targets, identifying adjustable parameters, and quantifying known model inputs. For this effort, the calibration targets include aquifer water levels and Snake River reach gains and losses. The adjustable parameters include aquifer transmissivity, specific yield, and riverbed and drain conductance. The known inputs include precipitation, evapotranspiration, surface water irrigation, ground water pumping, seepage from rivers other than the Snake River, and underflow from tributary aquifers.
Subjects:
Aquifers Computer models
Location:
Eastern Snake Plain Aquifer; Southern Idaho
Latitude:
42.96
Longitude:
-115.13
Collection:
Boise Basin
Series:
ESPAM
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
Publisher:
Idaho Water Resources Research Institute; University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
KIT

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Preferred Citation:
"Eastern Snake River Plain Aquifer Model calibration report. Model design and calibration document number DDM-008", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-ddm008_calibrept-1.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
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