Water Quality Management Techniques for Reservoirs
The curtailment of nutrient, organic matter, and sediment loads to reservoirs is a direct means for improving water quality. However, the recycling of nutrients and/or the failure to sufficiently...
Dredge Automation: The State-of-the-Art
Automated control systems are being developed and applied to enhance the productivity and cost-effectiveness of dredges. Referring particularly to hydraulic type dredging plants, the functions...
Cost-Effective Water Quality Management and Risks
Environmental regulations typically specify applicable streamflow conditions for compliance with water quality standards. The level of streamflow specified is one of the most significant...
Risk Analysis in Water Quality Control
Design of facilities for the control of water quality is usually predicated upon some explicit expectation of performance. In reality, unit operation efficiency, system operation, model...
Design of Selective Withdrawal Intake Structures
An overview is presented of the general methodology used by the U. S. Army Corps of Engineers in the design of selective withdrawal intake structures. Considered are the types of structures...
Report on Task Committee's Scope and Findings
A Task Committee for the Design of Outlet Control structures studied the state-of-the-art practices concerning the hydraulic function, water quality, public safety, maintenance and aesthetic...
Safety, Maintenance, and Aesthetic Considerations Associated with Outlet Control Structures for Stormwater Detention Ponds
Findings of the Task Committee for the Design of Outlet Control Structures, an ASCE Technical Committee, regarding maintenance, safety and aesthetic considerations for stormwater detention...
Outlet Hydraulics vs. Storage Requirements
In many cases developers must use a portion of their land for temporary detention of storm runoff in order to comply with local ordinances. A simple method is outlined which yields the...
Detention Pond Outlet Design for Pollution Control
Stormwater runoff detention ponds were originally developed for the control of flooding and the designs of the outlet control structure must be modified to obtain pollution control objectives....
Reservoir System Management for Water Quality
A reservoir system analysis computer model has been recently developed with the capability to simulate up to 10 reservoirs, 30 control points and 8 water quality parameters. With this...
Controlling River Ice to Alleviate Ice Jam Flooding
Many communities affected by ice jam flooding have accepted the event as unpreventable. Others have approached their problem as one of open channel flow and implemented standard projects...
Goals and Objectives in Design of Detention Outlets
Goals are the broad general purposes of the detention pond and its outlet works. A typical goal for a detention pond would be to help manage storm runoff so as to maintain historic conditions...
Design and Operation of Pipeline Control Systems
More and more of the time of the engineer involved in the design and construction of a pipeline project is devoted to problems relating to the control systems to operate and monitor the...
Checking Out Computer Programs
Instead of reading through program listings, the authors propose that you check out computer programs by acquiring and evaluating the program's user documentation, evaluating...
Asphalt: Great Expectations
A $50 million, five year research program has been proposed for research into asphalt as part of the larger ($150 million) Strategic Transportation Research Study (STRS). The research...
Superplasticized Concrete Takes Off in Dallas
Some engineers are calling superplasticized concrete the most important advance in concrete technology in over three decades. Over the past four years superplasticized concrete has begun...
Activated Sludge
A Comparison of Oxygen and Air Systems
The use of pure oxygen in biological wastewater treatment is the only major advance which has occurred in the area of activated sludge treatment since the early 1960's. Furthermore,...
Methods of Ice Control
Ice control is the practice of holding ice in place or directing its growth and movement. Methods of ice control in navigable waters including locks are presented. Ice carried downstream...
New Developments in Urban Hydrology in France from 1979 to 1982
The period of 1979-1982 is characterized by an important growth of the number of research studies, and financial investments for practical applications of research results. That growth...
Quality Assurance for Cold Regions Construction
Quality Assurance for cold regions construction begins at the design stage. Unique civil, structural, material and equipment requirements for the severe arctic environment and continuous/discontinuous...
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