Testing Outlet Works Gates and Valves at USBR Dams Under Unbalanced Head Conditions: Close-coupled Guard and Regulating Gates at Yellowtail and Flaming Gorge Dam
Part of the U.S. Bureau of Reclamation (USBR) program for unbalanced testing of outlet works guard gates and valves at its dams involves testing facilities with 'close-coupled' guard and...
Survival of Atlantic Salmon Smolts Bypassed Through Ice-Log Sluices Determined by the HI-Z Turb'N Tag
The HI-Z Turb'N Tag was used to assess injury and mortality incurred by Atlantic Salmon (Salmo salar) smolts bypassed through ice-log sluiceways at two stations. Both sluiceways were similar...
Automatic Control of a Sewage Interceptor
This paper presents a control system for the automatic operation of a sewage intercepter with control gates to reduce sewage discharge to the receiving waters. One of the issues of the...
A Control Method for On-Demand Operation of Open-Channel Flow
This paper proposes a control system for the automatic operation of an open channel having upstream and downstream gates. The main issue is the use of a discrete-time algorithm which computes,...
A Comprehensive Project for the Venice Lagoon
The Venice Lagoon is undergoing a severe process of environmental decay, due to increasing pollution from urban, industrial and agricultural sources. A number of projects have been launched,...
Preservation Potential of the Delaware Atlantic Coast Barrier?Backbarrier System
Volumes of Delaware Atlantic barrier and shoreface lithosomes were digitized to evaluate preservation potential during transgression. Erosion during headland retreat of less than 0.5 km...
Unique Design Used for Collapsible Gate
The collapsible gate on the Wausau Dam is unique; there is only one known that is similar in design. The collapsible gate, which looks like an inverted V, was designed by Mead and Hunt...
Double Radial Gates for the Brunau Ice-Retention Weir in Switzerland
During the springtime thaw, the River Sihl, which flows from the south into the city of Zurich, Switzerland, carries large quantities of ice flow. In 1968, to protect the footings of a...
Hydraulic Transients in the Operation of Small Hydro Plants
Adequate governing stability is a primary consideration for most large hydroelectric generating units. However, almost all small units installed recently in the United States are intended...
Position Indicator Arrangements for Gates
There are several types of position indicator arrangements that can be installed for various types of gates. These arrangements include mechanical, hydraulic and electronic types. Larger...
Design of a Self-Regulating Flap Gate
The objective of the research reported here is to improve the design of a flap gate whose function is to maintain a constant upstream water level over a wide range of flow rates. The self-regulating...
Model Study of a Hurricane Surge Barrier Gate Valve
Physical model studies were conducted to determine the hydraulic performance of a unique vertical butterfly-gated structure. These studies were also used to determine the torque on the...
The Concept of the New Waterway Storm Surge Barrier: Reliability as an Integral Part of a Nation's Sea Water Defense System
In the southwest of the Netherlands a storm surge barrier is to be built in the waterway that gives access to the port of Rotterdam. Strict design conditions ensure that only very slight...
Reliability of Miter Gates
A new approach for the reliability calculation of miter gates is presented. The reliability and hazard functions are related to the surficial wear of miter gates on their horizontal sill....
Reliability Estimation for Vertical Lift Gate at Emsworth Dam
The lift gates are composed of two horizontal trusses, two vertical girders, seven diaphragms, and two end frames. A critical element in the structural integrity of the lift gate is a...
Guard Gate Tests at Tieton Dam
The emergency gate hoist system on the guard gates at Tieton Dam, near Yakima, Washington, was tested as part of the United States Bureau of Reclamation Safety Evaluation of Existing Dams...
Innovative Spillway Design
The Lake Alan Henry Dam, near Lubbock, Texas, will consist of an earth filled embankment, a service spillway and an emergency spillway. The service spillway is designed to handle flows...
Solving Turbulent Flows with Finite Elements
A finite element computer code using the q - r turbulence model is applied to turbulent flow under a sluice gate. The addition and slow removal of artificial diffusion enhances convergence....
Effect of Barrier Beach Breaching on Harbor Dynamics and Storm Surges
This paper presents a summary of the flood insurance study, commissioned by the Federal Emergency Management Agency, to determine the 100-year flood elevation for Chatham, a seacoast town...
Aeration of a Submerged Jet-Flow Gate
Submerged operation of a jet-flow gate requires special treatment of the area downstream from the gate to avoid cavitation damage. The Bureau of Reclamation studied operation of a submerged...
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