This report (185 pages and 2 plates) presents new and compiled geologic, geophysical, hydrologic, and hydrochemical data to delineate the regional ground-water flow system in Curlew Valley. Decreased precipitation combined with increased agricultural pumping in the central part of Curlew Valley since the late 1960s caused a steady decline in discharge at the Locomotive Springs complex. The report includes a compiled geologic map of the Curlew Valley surface-drainage basin at 1:100,000 scale and new geologic and hydrochemical data.
This report summarizes the bedrock geology of the western part of the northern Wasatch Range in eastern Box Elder County, Utah , and its relation to ground-water resources. The southern part of the northern Wasatch Range is herein informally designated the Willard mountains; the northern part of the northern Wasatch Range is the Wellsville Mountains. Box Elder Canyon is the boundary between these mountains. The work was performed at the request of the Bear River Water Conservancy District and the Utah Division of Water Resources, and represents a preliminary step in the evaluation of groundwater resources in bedrock and their potential development in eastern Box Elder County.
This report describes the geology of the central Virgin River basin in southwestern Utah, and characterizes the structure and lithology of the Jurassic Navajo Sandstone and the thickness and stratigraphy of Quaternary-late Tertiary unconsolidated deposits, the two main aquifers in the region. Southwestern Utah has experienced rapid population growth and increased demand on water supplies during the past 15 years, and the purpose of this report is to better define the ground-water resources of the area. Ground water provides approximately half of the public water supply in southwestern Utah, so future decisions regarding water use must be based on careful geologic characterization of the aquifers and their relation to the regional hydrologic system. The results of this study will be applied to ground-water modeling, evaluating regional and local hydrogeologic conditions, and assessing sites for development of ground water. 53 pages + 7 plates
This report summarizes the bedrock geology of the western part of the northern Wasatch Range in eastern Box Elder County, Utah , and its relation to ground-water resources. The southern part of the northern Wasatch Range is herein informally designated the Willard mountains; the northern part of the northern Wasatch Range is the Wellsville Mountains. Box Elder Canyon is the boundary between these mountains. The work was performed at the request of the Bear River Water Conservancy District and the Utah Division of Water Resources, and represents a preliminary step in the evaluation of groundwater resources in bedrock and their potential development in eastern Box Elder County.
The Kamas-Coalville region is in the Middle Rocky Mountains physiographic province, about 30 miles east of the Wasatch Front urban area. Rapid population growth and increased water use are the impetus for a collaborative study of water resources in the Kamas-Coalville region, which includes geologic and hydrologic components. This study describes the geologic framework of the Kamas-Coalville region, emphasizing geologic features that most strongly influence ground-water occurrence, flow, and development. The main topics include: (1) the stratigraphy and structural geology of bedrock, (2) the nature and geometry of unconsolidated deposits in Kamas Valley, (3) the hydrostratigraphy of the study area, and (4) the structure of bedrock units below Kamas Valley. 55 pages + 15 plates
This report describes the geology of the central Virgin River basin in southwestern Utah, and characterizes the structure and lithology of the Jurassic Navajo Sandstone and the thickness and stratigraphy of Quaternary-late Tertiary unconsolidated deposits, the two main aquifers in the region. Southwestern Utah has experienced rapid population growth and increased demand on water supplies during the past 15 years, and the purpose of this report is to better define the ground-water resources of the area. Ground water provides approximately half of the public water supply in southwestern Utah, so future decisions regarding water use must be based on careful geologic characterization of the aquifers and their relation to the regional hydrologic system. The results of this study will be applied to ground-water modeling, evaluating regional and local hydrogeologic conditions, and assessing sites for development of ground water. 53 pages + 7 plates
The U.S. Environmental Protection Agency is recommending that states develop Pesticide Management Plans for four agricultural chemicals – alachlor, atrazine, metolachlor, and simazine – herbicides used in Utah in the production of corn and sorghum. This report and accompanying maps are intended to be used as part of these Pesticide Management Plans to provide local, state, and federal government agencies and agricultural pesticide users with a base of information concerning sensitivity and vulnerability of ground water to agricultural pesticides in Utah. We used existing data to produce pesticide sensitivity and vulnerability maps by applying a combined process-based and index-based model specifically tailored to the Western United States using Geographic Information System analysis methods. This is a first cut at developing pesticide sensitivity and vulnerability maps; better data and tools may become available in the future so that better maps can be produced. 40 pages + 2 plates
This report (185 pages and 2 plates) presents new and compiled geologic, geophysical, hydrologic, and hydrochemical data to delineate the regional ground-water flow system in Curlew Valley. Decreased precipitation combined with increased agricultural pumping in the central part of Curlew Valley since the late 1960s caused a steady decline in discharge at the Locomotive Springs complex. The report includes a compiled geologic map of the Curlew Valley surface-drainage basin at 1:100,000 scale and new geologic and hydrochemical data.
This report summarizes the bedrock geology of the western part of the northern Wasatch Range in eastern Box Elder County, Utah , and its relation to ground-water resources. The southern part of the northern Wasatch Range is herein informally designated the Willard mountains; the northern part of the northern Wasatch Range is the Wellsville Mountains. Box Elder Canyon is the boundary between these mountains. The work was performed at the request of the Bear River Water Conservancy District and the Utah Division of Water Resources, and represents a preliminary step in the evaluation of groundwater resources in bedrock and their potential development in eastern Box Elder County.
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This CD-ROM contains a 30 page report with 22 page appendix, and seven maps at 1:15,000 to 1:30,000 scale in easily readable PDF format that address ground-water quality in Castle Valley's valley-fill aquifer and provide recommendations for septic tank soil-absorption-system density based on potential water-quality degradation associated with use of these systems. The maps are described in detail in the report and show geology, valley-fill thickness, total-dissolved-solids concentration, nitrate concentration, ground-water quality class, potential containment sources, and recommended lot size."--Sticker on back of case.
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