Abstract: A study was conducted for the resolution of sediment source areas in the Big Sandy River basin, southwestern Wyoming. Suspended-sediment and bedload data were collected in order to determine total sediment transport at several locations within the basin. The bedload data were compared to the Einstein bedload function and total load data were compared to the Colby method. The bedload comparison showed a higher estimation of transport rates with Helley-Smith sampler measurements than with the Einstein beadload function. The Colby method yielded higher transport rates at high flows and lower transport rates at low flows than the measured total transport rate. The Big Sandy reservoir acts as a control in the basin. The area upstream of the reservoir was interpreted separately from the area downstream for source-area determination. In the arid plains upstream of the reservoir, the amount of sediment transported increased 98 percent with an increase in runoff of only 1 percent.

From introduction: One purpose of this study was to describe streamflows of the Green River and its tributaries. In addition to describing the cause and occurrence of streamflows in the study area, a brief discussion of how streamflow data are collected and summarized is presented as background information to users of this report who may be unfamiliar with streamflow measurement. The second and primary purpose of this study was to describe hydraulic characteristics of streams in the study area.

This report describes the results of a computer model simulation of the Potomac-Raritan-Magothy aquifer system in New Jersey to see "the effects of supplementing ground water from the Delaware River. It includes tables.

Abstract: Sacramento County expected to begin operation of the Sacramento Regional Wastewater Treatment Plant in 1982. The California State Water Resources Control Board has ruled that the plant will not be allowed to release effluent into the Sacramento River when flow in the river is 4,000 cubic feet per second or less. Depending on tide condition, flows less than 4,000 cubic feet per second may occur either once or twice during each 24-hour 50-minute tide cycle when the daily mean flow is less than about 12,000 cubic feet per second. Daily mean flows less than 12,000 cubic feet per second occur about 28 percent of the time. Riverflow at the plant outfall is monitored by an acoustic streamflow measuring system. Regulation of effluent released from the plant will normally be based on real-time flow data computed by the acoustic system. A graphical method for determining the occurrence and duration of flows of 4,000 cubic feet per second and less was developed as a backup system to be used if a temporary failure in the acoustic system occurs.

From purposes of approach of study: The purposes of this study were to: (1) Define, on a reconnaissance level, current (1979) water-quality conditions in major aquifers (water-yielding rock formations) in the eastern Snake River basin; (2) present available geologic and hydrologic data to assist in understanding the natural and man-caused factors that affect water-quality conditions; and (3) establish a hydrologic base upon which future comparisons can be made to evaluate changes.

From Purpose and Scope: The objectives of the study and the purposes of this report are to provide a technique to estimate the magnitude and frequency of flood-peak discharges at ungaged sites and to determine the effects of urbanization on these flood peaks. Regression techniques were selected to make these estimates. The scope of the study is limited to streams in the Dallas-Fort Worth area.

This report evaluate the water quality of the three major tributaries to the Chesapeake Bay, the Susquehanna, Potomac, and James Rivers.

This report evaluates the quality of the ground water in seven small contiguous stream basins in the coal area of Buchanan County, Virginia.

Purpose and scope: The purpose of this study is to assess the impact of the development of Winslow Crossing on water resources., including the quantity and quality of streamflow, the quality of ground water, and water levels of the aquifer. Streamflow and water-quality data were collected for 7 years at four sites on the tributaries and the main stem of the Great Egg Harbor River. Water-quality data were also collected at an additional four surface-water sites. Water levels were recorded at four observation wells. These wells were sampled periodically for water-quality analysis. Samples were also taken from the main production well for Winslow Crossing.

From introduction: The purpose of this report is to compile the available geologic information on the Kettleman City area of the Central Valley that would aid others in the proper management of the valley's ground-water resources.