WorldCat Identities

Hydraulics Laboratory (U.S.)

Works: 936 works in 1,547 publications in 1 language and 15,581 library holdings
Genres: Bibliography 
Roles: Originator, Monitor
Classifications: TA7, 307.14
Publication Timeline
Most widely held works about Hydraulics Laboratory (U.S.)
Most widely held works by Hydraulics Laboratory (U.S.)
Intake structure operation study, Lost Creek Dam, Oregon by Stacy, E Howington( Book )

4 editions published between 1989 and 1990 in English and held by 166 WorldCat member libraries worldwide

An investigation was made into reservoir release operations at the Lost Creek Dam, located on the pristine Rogue River which provides habitat to a valuable anadromous fishery. This fishery is highly temperature sensitive. Multiple-level selective withdrawal technology is presently used to meet established downstream temperature targets that would best suit the fishery. These target temperatures are adequately approximated in the releases for part of the year; however, in the fall, winter, and early springs, the releases are warmer than desired. This problem is thought to be contributing to a lower-than- desirable survival rate among the young salmonids. This study provided a means of predicting the intake port openings to meet the desired release temperature most closely and investigated the potential for improving the long-term operational strategies for this structure. To develop a prediction capability for the intake structure, the site-specific characteristics of selective withdrawal and simultaneous multiple-level withdrawal were studied. A 1:80-scale physical model was tested in both density stratified and homogeneous density environments. An optimization routine was used to evaluate the effects of short- term operational modifications on the reservoir's long-term ability to meet release targets. An alternative set of target temperatures provides inherent resource conservation when used on a daily basis in lieu of the original targets
Particle size distributions of bed sediments along the thalweg of the Mississippi River, Cairo, Illinois, to Head of Passes, September 1989 Potomology Program (P-1), report 7 by Carl F Nordin( Book )

3 editions published in 1992 in English and held by 144 WorldCat member libraries worldwide

Changes in Mississippi River bed material gradations between Cairo, IL, and head of Passes, LA, between 1932 and 1989 were determined. In September 1989, bed material samples were collected from the thalweg of the river along the 955-mile reach. In all, 504 samples were collected at 417 locations. Results were compared to a similar sampling program conducted in 1932. In general, the 1989 bed contained less coarse sand and gravel and less very fine sand than the 1932 lied. Upstream of the Old River Structure near river mile 300 the bed was generally finer in 1989 than in 1932. Downstream from river mile 300 the median grain size was about the same, but the distribution was more uniform, with less very fine sand
A numerical mud discharge plume model for offshore drilling operations by Roger H Multer( Book )

2 editions published in 1985 in English and held by 113 WorldCat member libraries worldwide

Mathematical modeling of three-dimensional coastal currents and sediment dispersion : model development and application by Y. Peter Sheng( Book )

5 editions published in 1983 in English and held by 102 WorldCat member libraries worldwide

Technical report HL by Hydraulics Laboratory (U.S.)( )

in English and held by 96 WorldCat member libraries worldwide

Practical riprap design by Stephen T Maynord( Book )

6 editions published in 1978 in English and held by 95 WorldCat member libraries worldwide

Determination of stable riprap size is a problem that has been studied extensively but not yet solved. Existing design methods are based on the shear stress exerted by the flowing water on the channel boundaries. The various methods available for computing the shear stress do not agree. Determination of the amount of shear stress a given size riprap can withstand depends upon which investigator's coefficient is used in the Shields' equation. The objective of this investigation was to develop a riprap design procedure based on known or easily calculated variables that properly describes riprap stability. Model tests or riprap stability were used in this investigation to insure that the proposed design procedure is applicable to the higher turbulence levels found in decelerating flow in open channels. Design curves for bottom riprap and side slope riprap in straight channels are presented. Tentative criteria for riprap in channel bends are discussed. (Author)
Muddy Creek grade control structures, Muddy Creek, Mississippi and Tennessee : hydraulic model investigation by Charles H Tate( Book )

6 editions published in 1988 in English and held by 91 WorldCat member libraries worldwide

Red River waterway sedimentation study downstream from Lock and Dam no. 1 : numerical model investigation by Ronald R Copeland( Book )

5 editions published in 1988 in English and held by 91 WorldCat member libraries worldwide

The effect of recently constructed and proposed channel improvements on sedimentation in the Red River downstream from Lock and Dam NO. 1 were investigated. A one-dimensional numerical model (HEC-6) was used to evaluate the effect of contraction works on dredging requirements in the navigation channel. A two-dimensional numerical model (TABS-2) was used to evaluate proposals to reduce deposition in the downstream lock approach channel at Lock and Dam No. 1. Recommendations were made to reduce sediment problems in the study reach. (FR)
Technical supplement to dredged material disposal study, US Navy Home Port, Everett, Washington by Stephen A Adamec( Book )

5 editions published in 1987 in English and held by 90 WorldCat member libraries worldwide

A series of numerical model runs predicting the short-term of contaminated and uncontaminated dredged materials disposed in open water was performed. The conditions tested were intended to represent typical conditions for the disposal of material at the proposed US Navy Home Port site at Everett, Washington. Two types of disposal methods were tested: a bottom disposal of contaminated material and a capping operation with uncontaminated material using hydraulic dredging and pipe discharge. Long-term predictions of disposal mound configuration and capping thicknesses based on hand calculations were also made. Three current conditions and four dredged material clumping percentages pipe configurations and four pipe discharges with varying density were simulated for the capping operation with uncontaminated material
Lake Darling Spillway, Souris River, North Dakota : hydraulic model investigation by Deborah R Cooper( Book )

6 editions published in 1988 in English and held by 89 WorldCat member libraries worldwide

The concrete gravity ogee spillway for the Lake Darling Dam will contain five 22-ft-high by 43-ft-wide gate bays separated by 10-ft-wide pairs. Outlet works consisting of four sluices within the piers will discharge into the spillway stilling basin. A hydraulic-jump-type stilling basin will provide satisfactory dissipation of the spillway and sluice flows. A 1:36-scale model of the spillway, sluices, stilling basin, approach area, and exit channel was used to study the overall hydraulic performance of the structure. Tests indicated that flow conditions in the approach to the spillway with both uncontrolled and controlled flows were satisfactory for the full range of anticipated discharges. Eddies developed on either side of the stilling basin. Constricting the channel flare to a uniform width eliminated the eddies. The size and extent of stone protection required on the dam embankment, side slopes and bottom of the approach channel, and side slopes and bottom of the exit channel were determined by model investigations. (fr)
Old River low-sill control structure : dynamic hydraulic forces acting on the stilling basin, survey boat safety, and debris passage : hydraulic model investigation by Bobby P Fletcher( Book )

4 editions published in 1988 in English and held by 89 WorldCat member libraries worldwide

Tests were conducted in 1:36-scale section models of the high and low bays to develop guidance for rehabilitation of the existing stilling basin, to develop guidance for the safety of survey boats operating in the approach to the structure, and to evaluate characteristics of debris passage through the structure. The portion of the basin between the baffles and end still was protected with sloping modules constructed of steel and grout, and tests were conducted to determine the hydraulic forces acting on the modules. A flow spoiler design to reduce uplift forces on the modules and not increase the sliding and uplift forces on the modules and not increase the sliding and uplift forces acting on the stilling basin was also investigated. Survey boat safety tests indicated that a typical survey boat operating upstream of the gate bays should be safe with gate openings equal to or less than 30% of the head on the crest. Debris passage tests indicated that debris up to 35 ft long and 3.0 ft thick would pass through the structure with gate openings equal to or greater than about 30 -40% of the head on the crest
Safe navigation speeds and clearance at lower sill, temporary Lock 52, Ohio River by Stephen T Maynord( Book )

5 editions published in 1987 in English and held by 88 WorldCat member libraries worldwide

This investigation has identified four possible mechanisms for producing tow squat, the vertical drop of the tow due to motion, measured from the still water level, in the temporary lock at Locks and Dam 52. Based on tests with tows either self-propelled or pulled with a towing apparatus, this investigation shows that squat for entering tows is determined by different parameters from those for exiting tows. The maximum squat for almost every self-propelled test (entering or exiting) was located at the stern of the towboat. For loaded tows entering the lock, the primary mechanism producing squat was propeller squat. Because tests involving entering tows using the towing apparatus produced very little squat for entering tows. For loaded tows exiting the lock, propeller squat is still an important mechanism for producing sqat. This importance was illustrated by the acceleration tests, during which all the tows approached the sill at the same speed. Squat increased for increased propeller speed. The towing tests show tow speed to be another significant factor in defining squat for existing loaded tows. It was not determined whether this squat was displacement or piston squat. Unloaded exiting tows also have the potential for enough squat to strike the lower sill when operating at high propeller and potential for enough squat to strike the lower sill when operating at high propeller and tow speed. It is likely that displacement, propeller, and moment squat all contribute to the total squat for unloaded exiting tows. The downstream gates for the emptying flume should remain open during tow entry/exit. Entry/exit speeds were higher with the values open. For equal tow speeds, squat is considerably less with the valves open
Dredging : an annotated bibliography on operations, equipment and processes( Book )

4 editions published in 1982 in English and held by 87 WorldCat member libraries worldwide

Lock design, bottom longitudinal filling and emptying system by Thomas E Murphy( Book )

5 editions published in 1980 in English and held by 83 WorldCat member libraries worldwide

This report presents and summarizes directions for design of bottom longitudinal filling and emptying systems for navigation locks. Even though additional refinements to the system are desirable, the bottom longitudinal filling and emptying system unquestionably is the best system for intermediate- and high-lift locks used to date by the Corps of Engineers. It not only is superior when operated as planned but also is inherently safer than other systems in that it is not sensitive to faulty operation of the valves
Old River overbank structure outlet modifications : hydraulic model investigation by Ronald R Copeland( Book )

4 editions published in 1980 in English and held by 83 WorldCat member libraries worldwide

Six different outlet modification designs for the Old River Overbank Control Structure were evaluated. Model tests were conducted on five of the designs and design variations. A 1:24-scale section model was used to simulate discharges up to 550,000 cfs. Type 5 outlet modification design, utilizing gabions placed parallel to the flow on a 1V on 10H slope, was deemed the best of the six designs tested. Recommendations were also made to increase gabion effectiveness by improved construction and placement methods
Prototype evaluation of sluiceway aeration system, Libby Dam, Kootenai River, Montana by Richard G McGee( Book )

5 editions published in 1984 in English and held by 81 WorldCat member libraries worldwide

Tests were conducted to make a comprehensive prototype evaluation of the postmodification (i.e., aerator installation and air vent streamlining) operating conditions of the project. Prototype measurements included air vent discharges, center sluice aerator slot pressures, and invert pressures acting along the center line of the center sluice. Pressure drops from the atmosphere to the right and center sluice gate chambers were measured along with the pressure acting on the modified wall separating the center sluice gate chamber from the lower service gallery. In addition, vertical, transverse, and longitudinal structure accelerations were measured in the vicinity of the center sluice gate and on the sluice emergency gate during an emergency gate lowering operation
Design for prevention of beach erosion at Presque Isle beaches, Erie, Pennsylvania : hydraulic model investigation by William C Seabergh( Book )

4 editions published in 1983 in English and held by 79 WorldCat member libraries worldwide

Presque Isle Peninsula, Erie, Pennsylvania, is a recurved sand spit with a lakeward perimeter of 9 miles that extends a protective arm around Erie Harbor. The peninsula provides 11 recreational beaches facing Lake Erie which are part of a State park that occupies almost the entire peninsula and contains an ecological reservation and numerous recreational facilities. Over the past 150 years, the integrity of the peninsula has been threatened by erosion of the beaches due to a decreasing sand supply, and numerous efforts to halt this erosion have been ineffective. A 1:50-scale (undistorted) physical hydraulic model was constructed to aid in evaluating the use of detached offshore breakwaters as a preventive measure against shoreline erosion. The model reproduced a 9,400-ft length of shoreline which included State Park Beaches 4, 5, and 6. These beaches contained a section of shoreline with an existing groin field and a reach of shoreline with few shoreline structures as it was desired to study the interaction of the proposed structures with both types of beaches
Navigation conditions at Lock and Dam 53, Ohio River, Kentucky and Illinois : hydraulic model investigation by Louis J Shows( Book )

7 editions published in 1979 in English and held by 68 WorldCat member libraries worldwide

This study is concerned with navigation conditions in the upper approach to a temporary 110- by 1200-ft lock under construction at the existing Lock and Dam 53 on the Ohio River. It became apparent during construction that the intensity of the crosscurrents in the approach to the existing lock would be increased with the temporary lock making navigation conditions extremely difficult and hazardous. The study was undertaken to determine the conditions that would develop with the structure as planned and to develop modifications required to provide satisfactory navigation. In order to provide results before construction was completed on the original plan, a semifixed-bed model utilizing existing facilities was used for the study. The model reproduced to an undistorted scale of 1:120 the dam, upper portions of the locks, and about 2 miles of the river upstream. Results of the investigation indicated the hazardous condition that could be expected with the structures as planned. Satisfactory navigation conditions could be developed with the temporary lock by extending the upper guard wall and providing sufficient ports in the wall to pass most of the flow intercepted by the wall. (Author)
Flood control and irrigation outlet works and tailrace channel for New Melones Dam, Stanislaus River, California : hydraulic model investigation by Stephen T Maynord( Book )

4 editions published in 1981 in English and held by 60 WorldCat member libraries worldwide

This model study was conducted with the major emphasis on determining the differential pressures acting on the vanes of the valves. Pressures were measured along the vane, and the differential acting across the vane was used in a structural analysis. Flow entering the 66-in.-diam valves in the low-level outlet works was highly distorted by the combined bends located just upstream of the valves. The upstream bifurcations in the flood control and irrigation outlet system caused substantial fluctuation of flow entering the 78-in.-diam valves. Discharge characteristics of the valves showed that the eight-vaned valves (without the center connecting hub design) used in the New Melones Dam outlet works have discharge coefficients slightly higher than conventional four- and six-vaned valves with center connecting hub. Approach conduit pressures were measured at all potential low pressure zones and no low pressures were measured. The original hood design was modified to reduce backsplash on the valves. In the low-level outlet works, the backsplash plate was moved downstream 4 ft from the original location and backsplash was substantially reduced. In the flood control and irrigation outlet system a divergent cone was used in lieu of the plate to reduce backsplash. Results of the study are considered valid for use in designing against fatigue failure of the vanes. Although frequency spectra determined that predominant frequencies were low, the possibility of a resonant failure cannot be ruled out
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Alternative Names

controlled identityCoastal and Hydraulics Laboratory (U.S. Army Engineer Waterways Experiment Station)

U.S. Army Engineer Waterways Experiment Station. Hydraulics Laboratory

English (94)