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Groundwater Model of Cache Valley, Utah

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Title	Groundwater Model of Cache Valley, Utah
Abstract	This report describes the development, calibration and use of a quantitative, predictive management model for the groundwater in the Utah portion of the Cache Valley in northern Utah. The quasi-three-dimensional finite difference computer model was adapted from the U.S. Geological Survey's Trescott and Larson model and simulates the groundwater levels and flows in the groundwater basin. The variable spacing grid system is 23 nodes x 38 x 2 and represents the complex natural system by a simpler approximation with one unconfined and one confined aquifer and the appropriate boundary and initial conditions. River nodes, spring nodes, and constant head nodes were developed to simulate the real interactions of the aquifers with streams, springs , and reservoirs. Evapotranspiration from the land surface is also represented by the program. The program was calibrated by adjusting the model parameters such as transmissivity, storativity, leakance, river nodes, spring nodes, etc. until the predicted values of head and flow were nearly the same as the observed conditions. Calibration was done in two stages: first a steady-state comparison with 1969 conditions and then a transient-state comparison with the water level change maps of 1969 to 1972. The calibrated model was then exercised to predict the groundwater system response to various assumed scenarios of groundwater recharge and draft. Thus the model provides a tool to guide future groundwater development and management towards the best alternatives.
Author	Clyde, Calvin G. Jeppson, Roland W. Liu, Win-Kai
Original Date	May 1984
Publisher of Original	Utah Water Research Laboratory
Location	Cache Valley (Utah and Idaho) Cache County (Utah) Utah United States
Subject (LCSH)	Groundwater--Utah--Computer programs
Time Periods	1980-1989 20th century
Material type (Local)	Reports
Source	The original of this item is located at Utah State University, Merrill-Cazier Library, Special Collections and Archives, University Archives Collection, 17.9:58r no. 19.
Part of Series	Utah Water Research Laboratory Hydraulics and Hydrology Series UWRL/H-84/04
Collection	Utah State University, Merrill-Cazier Library, Special Collections and Archives, University Archives
USU Call Number	17.9:58r no. 19
Cited by	Bear River Watershed Historical Bibliography / compiled by Utah State University Library, Special Collections and Archives, 2005
Digital Publisher	Digitized by: Utah State University, Merrill-Cazier Library
Date.Digital	2009-04
Type	Text
Format	image/jpeg
Conversion Specifications	Scanned by Utah State University Library using Epson Expression 10000 scanner, 8-bit RGB, at 400 dpi. Archival file is uncompressed TIFF (400 dpi); display file is JPEG (300 dpi) to allow some zoom, while still minimizing file space. OCR text and display pdf generated using CONTENTdm OCR Extension. If pdf does not display correctly, try switching to a different browser or different reader.
Rights	Reproduction for publication, exhibition, web display or commercial use is only permissible with the consent of the U.S.U. Merrill-Cazier Library archives curator, phone (435) 797-0894
Print Orders	http://library.usu.edu/Specol/reproductionform.html
Contributing Institution	Utah State University, Merrill-Cazier Library
Identifier	17958rno19
Search Date	1984-05
Date created	2012-10-31

Title	Front Cover
Transcript	A GROUNDWATER MODEL OF CACHE VALLEY, UTAH Calvin G. Clyde Roland W. Jeppson Win-Kai Liu en i— • o c !_ OO LTV CH { r— j — Utah Water Research Laboratory Utah State University Logan, Utah 84322 May 1984 HYDRAULICS AND HYDROLOGY SERIES UWRL/H-84/04
Date created	2009-04-22

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Groundwater Model of Cache Valley, Utah

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Groundwater Model of Cache Valley, Utah

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