This technical memorandum constitutes a complete report on a model study of the Pryors Island reach of the Ohio River, made for the purpose of determining the most effective plan of regulating works for the further improvement and stabilization of the navigable channel.

The study reported herein was conducted in 1944 at the Waterways Experiment Station for the Bureau of Yards and Docks, U. S. Navy Department. Its purpose was to determine the best of several plans proposed for protecting the piers and dry docks at the Naval Operating Base, Terminal Island, San Pedro, California, from the effects of wave and surge action.

Summary: "This report provides data on the alluvial aquifer of the Lower Mississippi Valley in the area between Cape Girardeau, Missouri, and Port Gibson, Mississippi. Maps are presented of the Tertiary surface on which the alluvial aquifer rests as well as the geology of this surface and the areas where hydrologic recharge to the alluvial aquifer may occur. A set of piezometric-surface maps, together with hydrographs of observation wells, river stages, precipitation rates, and data on the hydrologic properties of the alluvium, makes it possible to calculate changes which take place in the aquifer. Further data are presented on the chemical quality of groundwater. The relevance of these data to engineering problems is discussed" (p. ix).

Results of hydraulic model investigations to study the proposed filling an demptying system for the Cordell Hull Luck on the Cumberland River and Tennessee. It also included tests of a multiport system and provided suggestions for improvement in the design.

Final report discussing a facility built to test californium-252 in research on moisture, density, and other properties of soil and rock in relation to engineering characteristics.

From abstract: Conventional direct sampling methods of airport pavement evaluation interfere with aircraft operations; therefore, an evaluation procedure based on nondestructive vibratory testing was developed.

Appendix containing navigation calculations and the the design specifications for buoys to be used in experimental observations at Eatons Neck. It accompanies a report on the investigation of the hydraulic regime and the physical characteristics of bottom sedimentation as part of a study to investigate the effects of disposal sites on organisms and the quality of surrounding water.

This report follows the study of the sedimentary and hydraulic processes in Long Island Sound near Green Ledge, Connecticut, and Eaton's Neck, New York with the intention of investigating was to evaluate the effects of aquatic disposal of dredged material on organisms and water quality, including the significance of physical, chemical, and biological factors that influence the rate of disposal site recolonization by benthic animals.

Appendix containing black and white reflection-profile photos. It accompanies a report on the investigation of the hydraulic regime and the physical characteristics of bottom sedimentation as part of a study to investigate the effects of disposal sites on organisms and the quality of surrounding water.

Appendix containing test results of core and grab sample data from Eatons Neck. It accompanies a report on the investigation of the hydraulic regime and the physical characteristics of bottom sedimentation as part of a study to investigate the effects of disposal sites on organisms and the quality of surrounding water.

Appendix containing profile camera photos to accompany a report on the investigation of the hydraulic regime and the physical characteristics of bottom sedimentation as part of a study to investigate the effects of disposal sites on organisms and the quality of surrounding water.

Appendix containing black and white photos of flora and fauna at the bottom of Eatons Neck site to accompany a report on the investigation of the hydraulic regime and the physical characteristics of bottom sedimentation as part of a study to investigate the effects of disposal sites on organisms and the quality of surrounding water.

The following report presents the results of a investigation to determine the baseline conditions of the phytoplankton population at the disposal site for future comparison with similar data collected after the disposal of dredged material.

"During the growing season of 1975, a field experiment was initiated on Lake Concordia, Louisiana, to test the potential effectiveness of selected organisms as control agents against waterhyacinths, Eichhornia crassipes (Mart.) Solms. [...] This report describes the experiment, presents the collected data, and summarizes the observations. Statistical analyses and interpretation of the data are also presented" (abstract).

Introduction: The purpose of this study was to assess the capabilities of the WES geophysical downhole logging equipment for obtaining in situ bulk densities and water contents in unconsolidated materials, to establish a log analysis procedure applicable from one site to another, and to compare geophysically derived properties with those obtained from laboratory analysis of samples.

Abstract: Drilling for laboratory testing of concrete and foundation rock was carried out for the U. S. Army Engineer District, Chicago, as part of a major rehabilitation program at the Starved Rock Lock and Dam.

Abstract: Physical property data of concrete and foundation rock for use in a stability analysis and the design of an anchorage system of grouted tendons are presented in this report.

Abstract: This report presents and summarizes guidance for design of bottom longitudinal filling and emptying systems for navigation locks.

Abstract: This model study was conducted to evaluate the characteristics of inflow conditions into an existing pump sump that would result with increased discharge capacity due to installation of the three proposed pumps and to develop modifications, if needed, within the confines of the present sump to improve flow distribution to the pump intakes.

From abstract: This report is intended as an aid to engineers studying alternative solutions to a coastal sand bypassing problem.

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.

A report regarding a filling and emptying system, Walter Bouldin lock, and lock culvert valve for the Coosa River Waterway, Alabama.

"This is one in a series of scientific reports documenting the findings of studies conducted under the Interagency Field Verifications of Testing and Predictive Methodologies for Dredged Material Disposal Alternatives (referred to at the Field Verification Program or FVP). This program is a comprehensive evaluation of environmental effects of dredged material disposal under conditions of upland and aquatic disposal and wetland creation."

Abstract: "A set of 12 charts are presented that relate Modified Mercalli intensity units to peak horizontal acceleration, velocity and duration for near field and far field locations, hard and soft sites, and sizes of earthquakes. Also shown is the mean, mean plus one standard deviation, mean plus two standard deviations, and the highest observed values. Ratios are provided of vertical to horizontal motions and predominant periods. These charts are for use with known fault sources and for floating earthquakes in zones where there are no identifiable causative faults. The procedure provides parameters for shaping time histories to be used for dynamic analyses."