Publications

The ground water within the 50,000-square-mile area of the layered basalt of the Columbia River Group is a generally uniform bicarbonate water having calcium and sodium in nearly equal amounts as the principal cations. water contains a relatively large amount of silica. The 525 chemical analyses indicate that the prevalent ground water is of two related kinds--a calcium and a sodium water. The

The Neshaminy has carved a scenic route on its way to the Delaware River, thereby helping to increase the value of land. The unabated growth of nearby metropolitan areas and the multiplying needs for water and open space for water storage and recreation in southeastern Pennsylvania have become impelling forces that mark the Neshaminy valley watershed for continued development of its land and water

For many years there has been a need for redefinition or more precise definition of certain ground-water terms used in publications by members of the U.S . Geological Survey. Another problem has been the expression of the coefficient of permeability (herein redefined as hydraulic conductivity) and the coefficient of transmissibility (herein redefined as transmissivity) in inconsistent units that i

A tracer study was conducted in Port Royal Sound to simulate the movement and ultimate pattern of concentration of a solute continuously injected into the flow. A total of 750 pounds of Rhodamine WT dye was injected by boat during a period of 24.8 hours in a line across the Colleton River. During the following 43 days, samples of water were taken at selected points in the sound, and the concentrat

This report presents the results of a fluorescent-dye-tracing study to determine the concentrations of a pollutant that would be present in the Northeast Cape Fear Estuary at various rates of continuous waste injection and freshwater inflow. Rhodamine WT dye was introduced into the estuary at a constant rate over a 24.8-hour period (two tidal cycles) at a point 6.4 miles upstream from the mouth in

No abstract available.

The Cranmoor area of central Wisconsin is the principal cranberry producing area of the State. Cranberries are grown in only about 2.5 square miles of an 80-square-mile marsh and swamp in the Cranberry Creek basin. Cranberry growers have built reservoirs and ditches throughout 25 square miles of marsh for better management of the area's natural water supply. Additional water is diverted into the b

Natrona County covers an area of 5.369 square miles in central Wyoming. The climate is arid except in the mountainous areas. The county includes parts of the Great Plains, Middle Rocky Mountains, Wyoming Basin, and Southern Rocky Mountains physiographic provinces. There is wide variation of topography. More than 30 geologic formations are exposed in the county, 28 of which are known to yield water

THE CORVALLIS-ALBANY AREA IS PART OF THE ALLUVIAL PLAIN THAT LIES BETWEEN THE CASCADE AND COAST RANGES IN THE CENTRAL WILLAMETTE VALLEY IN NORTHWESTERN OREGON. THE ALLUVIAL DEPOSITS (SAND AND GRAVEL) OF THE VALLEY PLAIN CONTAIN THE MOST PRODUCTIVE AQUIFERS IN THE AREA AND ARE CONSIDERED TO BE THE ONLY UNITS FEASIBLE FOR LARGE-SCALE DEVELOPMENT OF GROUNDWATER SUPPLIES. DURING 1971 THE SEASONAL DECL

An optical (photocell) sensing device was used to measure the relative transparency characteristics of sediment suspensions with a view toward improving our ability to measure the temporal variations of suspended-sediment concentration moving in streams. The instrument used was a commercial "falling stream" turbidimeter that measured the relative transparency of a gravity induced smooth flat sampl

During 1939-69, 836 cloudburst floods were reported in Utah. The largest number was in 1965, when 88 floods were reported; 63 floods were reported in 1968, and 56 were reported in 1961. The smallest number of floods reported was three in 1944. In 1942, 1948, and 1950, six floods were reported each year. The main source of data was newspaper reports.Cloudburst floods in Utah were experienced in the

This report presents the basic data that were collected by the U.S. Geological Survey during a study of the chemical quality of water in Flaming Gorge Reservoir. An interpretive report will follow. The basic data were collected from the reservoir during six sampling runs between October 1970 and September 1972. The reservoir was sampled for chemical analyses at 17 sites. Chemical and physical data