This report presents the findings of the analyses made for a fifty-eight mile stretch along the Yampa River in Colorado. It contains maps, graphs, and tables.

This report includes several photographs and illustrations, as well as text, to describe a portable unit for filtering water samples. It "is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature."

This report presents the results of a preliminary investigation into the water quality and the relationship between surface and ground-water for the Connetquot Brook basin in Long Island, New York. It contains maps, graphs, and tables.

This report examines and describes the geohydrologic status of the Albin and La Grange areas, specifically focusing on the use of irrigation wells to access ground water. Includes maps and illustrations.

From introduction: The purpose of this report is to describe the results of the data collection at these bridge sites and compare the results with existing laboratory and field data and with those results predicted from selected scour formulas.

Abstract: A time of travel study of a 106-mile (171-kilometer) reach of the Sandusky River and a 39-mile (63-kilometer) reach of Tymochtee Creek was made to determine the time required for water released from Killdeer Reservoir on Tymochtee Creek to reach selected downstream points. In general, two dye sample runs were made through each subreach to define the time-discharge relation for approximating travel times at selected discharges within the measured range, and time-discharge graphs are presented for 38 subreaches. Graphs of dye dispersion and variation in relation to time are given for three selected sampling sites. For estimating travel time and velocities between points in the study reach, tables for selected flow durations are given. Duration curves of daily discharge for four index stations are presented to indicate the low-flow characteristics and for use in shaping downward extensions of the time-discharge curves.

In this report, information is presented by means of tables and illustrations preceded by brief explanations. It includes the agencies collecting the data, the number of stations located on surface and ground waters where temperature measurements are made, the distribution of stations by States and by the 21 regions of the Water Resources Council.

Abstract: A glacial outwash aquifer of about 70 square miles in the Scioto River valley southeast of Columbus, Ohio, was modeled as a potentially major source of water. The model was constructed from available hydrologic data: Records of precipitation, well hydrographs, well logs, two ground-water level surveys, and analyses of six aquifer tests. Utilizing this array of data, water levels determined from a series of steady-state simulations of different hydraulic conductivity distributions were calibrated against measured (December 1977) ground-water levels. The simulations that provided the best matches used two hydraulic conductivity distributions: One was an areally varying hydraulic conductivity distribution; the other an areally uniform hydraulic conductivity (40 feet per day) distribution. After these more probable hydraulic conductivity distributions were found, they were utilized in steady state maximal pumping simulations. The maximal well-field yield of these simulations was 20.5 million gallons per day for the areally varying hydraulic conductivity distribution, and 11.3 million gallons per day for the areally uniform hydraulic conductivity. Sensitivity of well yield to changes in well position and streambed leakance changes was investigated also.

From introduction: The purpose of this study, made in cooperation with the Texas Department of Water Resources, was to adapt an existing model to utilize available streamflow and water quality data to compute runoff from the Houston area and to compute the concentrations and loads of selected water-quality constituents contained in the inflow to Galveston Bay.

From abstract: The objective of this project was to assess the magnitudes and types of nonpoint discharges that affect the water quality of Pequea Creek. The project included the determination of (1) the total discharge of suspended sediment, nitrogen, and phosphorus from the basin; (2) intermittent storm and base-flow discharges from six subbasin sites of varying size, geology, and land use; (3) the difference in magnitudes of the discharges during base-flow periods and storms; and (4) which variables most affect the transport of these constituents.

Report and Geographic Survey. Report reveals "relations for estimating peak flows and mean annual flow for natural streams in Wyoming using the channel-geometry method and basin-characteristics method. Also includes maps, graphs, and photographs.

The report consists of three principal sections; environmental setting, water resource management, and the hydrologic system. The environmental setting describes the land and people as related to water resources. The section on water resource management is intended to provide practical information needed for the planning and management of water resources. The section on the hydrologic system is a more technical discussion of water in the Red River basin. The section on water management can be used to locate the water, determine the amount available and its quality; whereas, the section on the hydrologic system describes the operation of the system how water moves through the system and why the quality is as it is.

From abstract: A two-dimensional digital model of the ground-water-flow system was constructed to test the conceptual model of the system ad to study the effects of development on ground-water levels and flow in the White River.

A report outlining the geology of the U12i and U12i.01 tunnels and the lithology of the U12i.01 drill hole, located at a Nevada test site. Prepared on behalf of the U.S. Atomic Energy Commission.

A report regarding monazite in part of the southern Atlantic Coastal Plain. This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

Photogeolgic maps showing the distribution of sedimentary rocks of Jurassic and Cretaceous age in the Iris and Doyleville quadrangles.

Report discussing development drilling on the Ormalian Group, Paradox District, Montrose County, Colorado.

A preliminary statement regarding Reserve Blocks H, I J, K, L, M, and N, of Outlaw Mesa, located in Mesa County, Colorado.

A preliminary reserve statement regarding Reserve Block A of Dolores Bench, located in Montrose County, Colorado

A preliminary reserve statement regarding Reserve Block C of Dolores Bench, Located in Montrose County, Colorado. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

A preliminary reserve statement regarding Reserve Block D of Spring Creek Mesa, located in Montrose County, Colorado. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

A report regarding the Robinson and Wetherly Uraniferious Pyrobitumen Deposits Near Placerville, San Miguel County, Colorado. This report concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission for the purpose of determining the uranium reserves, mode of occurrence, and extent of these deposits.

A report regarding carnotite resources of Outlaw Mesa, Mesa County, Colorado.

Discussing the geology of the Midnite Mine Area, in the Spokane Indian Reservation