Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Coos Bay region of the Pacific coast area. Scale 1:250,000.

Introduction: This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the eleven holes drilled in the McDermitt caldera project during the 1981 drilling program. General information is presented regarding specific problems, including weather and logistics. A separate geologic report is being prepared and will be available through the Bendix Field Engineering Corporation Technical Library in the near future.

From abstract: Jurassic ammonites of late Bathonian to middle Callovian Age have been found in 12,000-13,000 feet (3,660-3,960 m) of strata exposed in the area near and south of Izee and Seneca in east-central Oregon. Ammonites of early Callovian Age and possibly also late Bathonian Age occur in several hundred feet of black shale exposed along Dennett Creek near Mineral, Idaho. Early Callovian ammonites also occur in similar black shale exposed on the Oregon side of Snake River Canyon about 32 miles (52 km) south of the northeast corner of Oregon.

This report follows a rotary-wing high sensitivity radiometric and magnetic survey that was flown covering a portion of the Lakeview Oregon area.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Vancouver, The Dalles, Pendleton, Walla Walla, Yakima, and Hoquiam quadrangles including background information, a description of methods, data reduction and analysis, and data presented in maps, tables, and graphical forms.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the The Dalles quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.

Report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Roseburg quadrangle in Oregon, including data acquisition methods, a summary of data and outline of data presentation, area geology, and interpretation of results.

Report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Coos Bay quadrangle in Oregon, including data acquisition methods, a summary of data and outline of data presentation, area geology, and interpretation of results.

Final report of the airborne gamma ray and total magnetic field survey for the Grangeville quadrangle, Idaho-Oregon-Washington. Sections I through IV of this report present information and results associated with this specific survey. Section V gives the data acquisition and the processing procedures.

Report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Medford quadrangle in Oregon, including data acquisition methods, a summary of data and outline of data presentation, area geology, and interpretation of results.

"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).

From abstract: The Columbia Hybrid Modeling System was applied to the mouth of the Columbia River estuary to evaluate alternatives for reducing navigation channel maintenance dredging.

Supplementary data containing geophysical logs to accompany an engineering report on the McDermitt Caladera Drilling Project in Nevada and Oregon.

Appendices containing survey data of the Klamath Falls Quadrangle in Oregon for uranium availability to accompany a report on U.S uranium resources in Oregon.

Supplementary analytical data containing elemental concentration data in surface sediment samples and ground water samples, in addition to areal distribution maps, histograms, and cumulative frequency plots. Also included is site location data for surface and ground water samples, and a user's guide. This data accompanies a report on hydrogeochemical and stream sediment reconnaissance of the Baker 1° x 2° NTMS Area, Oregon and Idaho.

Appendices containing data on uranium availability in the Vya Quadrangle to accompany a report on U.S. uranium resources in Nevada, Oregon, and California.

Appendix containing data on uranium availability in the Jordan Quadrangle to accompany a report on U.S. uranium resources in Oregon and Idaho.

Appendices containing data on uranium availability in the Baker Quadrangle to accompany a report on U.S. uranium resources in Oregon and Idaho.

From purpose and scope: This report describes methods for estimating the magnitude and frequency of floods at ungaged sites on streams with unregulated flow in eastern Oregon. The purpose is to provide a method to estimate flood magnitude and frequency and to present the supporting data. The report is based on data from nearly all unregulated streams (or data from regulated streams prior to their regulation) where gaging stations have been operated.

From introduction: Of the various hydrologic hazards in our environment, the mass movement of earth material caused by excess moisture can be one of the most destructive. These events often go unnoticed because they occur in unpopulated mountainous terrain during winter seasons. This was not the case in December 1964, when a major debris flow occurred in the Cave Creek drainage of the Oregon Caves National Monument. In March 1982, the National Park Service (NPS) requested a study be made to appraise the possibility of a recurrence of the 1964 debris flow in the interest of safeguarding the public and employees of the National Park Service.

From abstract: Precipitation in the Newberry caldera is nearly in balance with evaporation, evapotranspiration, and and streamflow. A small surplus of water, estimated to be in the range 2,500 to 6,500 acre-feet, is available annually for recharge to deep aquifers beneath the caldera floor.

The following report the the first set that documents the results of the airborne gamma radiation and total magnetic field survey flown for the Jordan Valley quadrangle in Oregon and Idaho in 1979.

The following report the the first set that documents the results of the airborne gamma radiation and total magnetic field survey flown for the Adel quadrangle in Ohio in 1979.

From introduction: The data presented here are reconnaissance data intended for use in identifying broad areas for further study. While care has been taken to provide reliable sampling and analyses, verification of individual analyses is beyond the scope of this report. The data should be viewed statistically because "one-point anomalies" may be misleading. Regional trends, however, should be reliable. This report is one of a series presenting data obtained by SRL reconnaissance.