Publications

Occurrence, quality, and availability of ground water differ considerably from place to place in the Eola-Amity Hills area because of the highly diversified geologic and hydrologic conditions. A table relates the geologic situation to the availability of ground water for four areas--Eola-Amity Hills, east and west valley plains, and Willamette River flood plain. Tables show well and...

The Walla Walla River, whose drainage basin of about 1,330 square miles lies astride the Washington-Oregon boundary, drains westward to empty into the Columbia River. The basin slopes from the 5,000-foot crest of the Blue Mountains through a structural and topographic basin to the terraced lands adjoining the Columbia River at an altitude of about 340 feet. The main unit of the...

This collection of 44 short papers is the second published chapter of Geological Survey Research 1965. The papers report on scientific and economic results of current work by members of the Conservation, Geologic, and Water Resources Divisions of the U.S. Geological Survey.

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The purpose of this manual is to familiarize field personnel with the procedures involved in operating crest-stage gaging stations. Crest-stage gages are used to determine the elevation of a peak stage occurring at a specific location in a stream. A crest-stage gage consists of a length of 14-inch diameter pipe installed in a vertical position in the stream channel (figure 1). The pipe...

This report, made during 1959-60, provides reconnaissance data on the quality of waters in the lower Columbia River basin ; information on present and future water problems in the basin; and data that can be employed both in water-use studies and in planning future industrial, municipal, and agricultural expansion within this area. The lower Columbia River basin consists of approximately...

A multidiscipline investigation to determine the effects of logging on the ecology of three small forested tributary basins is a part of an overall study of the Alsea River basin in the Coast Range of Oregon. The investigation of these small basins will be to (1) establish pre-logging conditions, (2) determine the effects of different logging methods, and (3) study the rate of recovery...

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The upper Grande Ronde River basin is a 1,400-square-mile area in northeastern Oregon, between the Blue Mountains to the west and the Wallowa Mountains to the east. The area is drained by the Grande Ronde River, which flows northeast through this region and is tributary to the Snake River. The climate is generally moderate; temperature extremes recorded at La Grande are 22°F. below zero...

Data are presented on more than 300 wells, including many new ones whose records will not be a part of a forthcoming interpretative report on the occurrence of ground water in this area. A brief description of the geomorphic features is given, and the characteristics of the rock units are summarized in a table. Principal aquifers are beds of loose sand and gravel in the early Pliocene...