Technical Report Archive & Image Library (TRAIL) - 170 Matching Results

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The Ecology of Stream and Riparian Habitats of the Great Basin Region

Description: "The purpose of this profile is to summarize the ecological information available for and relevant to stream and riparian habitats of the Great Basin. The Great Basin comprises the northern half of the Basin and Range physiographic province and covers most of Nevada and western Utah and portions of California, Oregon, and Idaho. The entire basin actually consists of numerous subbasins and mountain ranges which present an extremely diverse physical setting" (p. iii).
Date: September 1989
Creator: Minshall, G. Wayne; Jensen, Sherman E. & Platts, William S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fourier Grain-Shape and Mineralogic Analyses of Coastal and Inner Shelf Sand Samples: Dana Point to the United-States-Mexico Border

Description: From introduction: The principal purpose of this report is to determine the local sediment sources of beach sand samples from the Oceanside, Mission Beach, and Silver Strand littoral cells.
Date: May 1989
Creator: Osborne, Robert H.; Ahlschwede, Kelly S.; Broadhead, Sean D.; Cho, Kyung H.; Compton, Eleanor A. & Yeh, Chia-Chen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tectonically Controlled Fan Delta and Submarine Fan Sedimentation of Late Miocene Age, Southern Temblor Range, California

Description: From introduction: The objectives of this report are to (1) document the stratigraphic framework of the Santa Margarita Formation and part of the Monterey Shale in the southern Temblor Range, (2) interpret the environments of deposition and depositional processes of the above units, and (3) evaluate the influence of tectonism on Santa Margarita sedimentation, with special attention given to testing the hypothesis of Berry and others (1968).
Date: 1989
Creator: Ryder, Robert T. & Thomson, Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sweetwater River Channel Improvement Project, San Diego County, California: Hydraulic Model Investigation

Description: From abstract: A study of the proposed channel alignment project was conducted using a fixed-bed model constructed at a scale of 1:40 to study the effect of downstream waves and disturbances caused by the curvilinear flow conditions.
Date: February 1988
Creator: Turner, Herman O., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bitumen-Bearing Deposits of the United States

Description: The following report summarizes the locations, resources, and petrophysical data of known bitumen-bearing deposits located primarily in Alabama, California, Kentucky, Texas, and Utah.
Date: 1988
Creator: Crysdale, Bonnie L. & Schenk, Christopher J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mineral Resources of the Turtle Mountains Wilderness Study Area, San Bernardino County, California

Description: From abstract: At the request of the U.S. Bureau of Land Management, approximately 105,200 acres of the Turtle Mountains Wilderness Study Area (CDCA-307) were evaluated for mineral resources (known) and resource potential (undiscovered). In this report, the area studied is referred to as "the wilderness study area" or simply "the study area"; any reference to the Turtle Mountain Wilderness Study Area refers only to that part of the wilderness study area for which a mineral survey was requested … more
Date: 1988
Creator: Howard, Keith A.; Nielson, Jane E.; Simpson, Robert W.; Hazlett, Richard W.; Alminas, Henry V.; Nakata, John K. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mineral Resources of the Whipple Mountains and Whipple Mountains Addition Wilderness Study Areas, San Bernardino County, California

Description: From abstract: At the request of the U.S. Bureau of Land Management, approximately 85,100 acres of the Whipple Mountains Wilderness Study Area (CDCA-312) and 1,380 acres of the Whipple Mountains Addition Wilderness Study Area (AZ-050-010) were evaluated for identified mineral resources (known) and mineral resource potential (undiscovered). In this report, the Whipple Mountains and Whipple Mountains Addition Wilderness Study Areas are referred to as simply "the study area."
Date: 1988
Creator: Marsh, Sherman P.; Raines, Gary L.; Diggles, Michael F.; Howard, Keith A.; Simpson, Robert W.; Hoover, Donald B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isabella Dam Spillway, Kern River, California: Hydraulic Model Investigation

Description: Abstract: "Tests were conducted on a 1:50-scale model of Isabella Dam Spillway to determine the adequacy of proposed spillway, dam, and channel improvements. The model reproduced an area of the reservoir 800 ft wide by 1,100 ft long, the spillway, and the entire length of the exit channel. Unsatisfactory flow conditions were observed in the vicinity of the spillway crest due to approach conditions to the spillway. Large cross waves, present in the exit channel just downstream of the spillway, r… more
Date: August 1987
Creator: Davis, W. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mineral Resources of the Fort Piute Wilderness Study Area, San Bernardino County, California

Description: From abstract: The Fort Piute Wilderness Study Area (CDCA-267) is in northeastern San Bernardino County, California, near the boundary between California and Nevada. Mineral surveys were requested for 31,371 acres of the Fort Piute Wilderness Study Area. In this report the area studied is referred to as "the study area". Examination of mines and prospects in the area was accomplished by the U.S. Bureau of Mines in 1981 and 1982. Field investigations of the area were carried out by the U.S. Geol… more
Date: 1987
Creator: Nielson, Jane E.; Frisken, James G.; Jachens, Robert C. & McDonnell, John R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Eureka Quadrangle, California: Final Report, Volume 1

Description: Report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Eureka quadrangle in California, including data acquisition methods, a summary of data and outline of data presentation, area geology, and interpretation of results.
Date: May 1985
Item Type: Refine your search to only Report
Location: None
Partner: UNT Libraries Government Documents Department
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Map Showing Outcrops of Basaltic Rocks of Early Quaternary and Tertiary Age, Basin and Range Province, Southern California

Description: From introduction: This map report is one of a series of geologic and hydrologic maps covering all or parts of States within the Basin and Range province of the western United States. The map reports contain detailed information on subjects that characterize the geohydrology of the province, including the ground-water hydrology, ground-water quality, surface distribution of selected rock types, tectonic conditions, areal geophysics, Pleistocene lakes and marches, and mineral and energy resource… more
Date: 1984
Creator: Roggensack, Kurt & Lopez, David A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for Estimating Ground-Water Return Flow to the Lower Colorado River in the Yuma Area, Arizona and California

Description: Purpose and scope: The purpose of this study was to develop a method for estimating the amount of subsurface return flow to the Colorado River in the Yuma area. This report presents a method that permits an approximate accounting of ground-water return flow from each side of the Colorado River in Yuma reach. The method presented in this report was developed specifically for application in the Yuma area. The validity of the assumptions inherent in the method was evaluated on the basis of the loc… more
Date: December 1983
Creator: Loeltz, O. J. & Leake, S. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for Estimating Ground-Water Return Flow to the Lower Colorado River in the Yuma Area, Arizona and California--Executive Summary

Description: Purpose and scope: The purpose of this study was to develop a method for estimating the amount of subsurface return flow to the Colorado River in the Yuma area. This report presents a method that will permit an accounting of ground-water return flows from each side of the Colorado River in the Yuma reach. The estimates of return flow can be used by water-management agencies in determining return-flow credits for the States of Arizona and California.
Date: December 1983
Creator: Loeltz, O. J. & Leake, S. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Summary of Ground-Water Pumpage in the Central Valley, California, 1961-77

Description: From purpose and scope: The purpose of this part of the Central Valley Aquifer Project is to gather and analyze all available information on the magnitude and distribution of ground-water pumpage in the Central Valley. These data will be used as input to a digital ground-water model, one of the products of the Central Valley Aquifer Project.
Date: October 1983
Creator: Diamond, Jonathan & Williamson, Alex K.
Item Type: Refine your search to only Report
Location: None
Partner: UNT Libraries Government Documents Department
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Injection of Treated Wastewater for Ground-Water Recharge in the Palo Alto Baylands, California, Hydraulic and Chemical Interactions--Preliminary Report

Description: From Purpose and Scope: The objectives of this study are: (1) to define, both qualitatively and quantitatively, the clogging processes associated with injection, and (2) to determine the three-dimensional migration paths of injection water and native ground water.
Date: September 1983
Creator: Hamlin, Scott N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of the San Dieguito, San Elijo, and San Pasqual Hydrologic Subareas for Reclaimed Water Use, San Diego County, California

Description: From purpose and scope: The purpose of this study was to update hydrologic data and refine understanding of the hydrologic system within the San Dieguito, San Elijo, and San Pasqual hydrologic subareas in San Diego County, Calif., and to evaluate the suitability of these areas for reclaimed water use.
Date: August 1983
Creator: Izbicki, John A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ground Water in North Monterey County, California, 1980

Description: From introduction: The purpose of this investigation is to provide the additional geohydologic information needed for Monterey County to develop plans for the optimum utilization of its water resources--particularly in the Prunedale and Aroms areas.
Date: July 1983
Creator: Johnson, Michael J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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