Monitoring and Design of Stormwater Control Basins
The City of Austin, Texas, has played a pioneering role in the control of urban nonpoint source pollution by enacting watershed and stormwater ordinances, overseeing detailed monitoring...
Multiple Treatment System for Phosphorus Removal
Detention ponds, wetlands, and infiltration basins have each been shown to reduce constituent loads carried by urban stormwater, including phosphorus. Design recommendations are presented...
Load-Detention Efficiencies in a Dry-Pond Basin
Inflow and outflow to a dry-pond detention basin in Topeka, Kansas, were monitored for 19 storms during a 14-month period. Samples of runoff were collected automatically at two inflow...
Simulated Water-Quality Changes in Detention Basins
A study has begun to simulate movement of stormflow through detention basins at four locations in the Irondequoit Creek watershed and determine the effect on peak flow and water quality....
Water Quality Study on Urban Wet Detention
This paper summarizes results of a monitoring program conducted on three urban wet detention ponds located within the Piedmont region of North Carolina, in the city of Charlotte. Data...
Hydraulic Effect of Turbid Water Infiltration Through a Shallow Basin
A 225 m2 test basin was operated from September 1986 through October, 1987, to determine the hydraulic effects of turbid water application. Initial...
Design of Seepage Fields for Stormwater Disposal
Stricker Pond is a shallow twenty-acre kettle hole pond in south-central Wisconsin. The pond receives runoff from a closed watershed that is rapidly undergoing low density residential...
An Application of EPA EXTRAN Model to a Flood Management Study in South Florida
In performing the flood management studies, somewhat unique concerns in South Florida are the backwater conditions due to tidal or non-tidal tailwater, flow reversals from project canal...
Geographic Estimation of Runoff-Model Parameters
The U. S. Geological Survey is developing techniques to estimate and evaluate unit-hydrograph and loss-rate parameter values for rainfall-runoff models using Geographic Information System...
Rainfall-Loss Parameter Estimation for Illinois
The U. S. Geological Survey is currently conducting an investigation to estimate values of parameters for two rainfall-loss computation methods used in a commonly used flood-hydrograph...
Management Practices for Erosion and Sediment Control in Irrigated Agriculture
Basin irrigating rice can reduce suspended sediment loads in water because the basins serve as sediment retention basins. Furrow erosion causes significant suspended sediment loads in...
Regional Detention Basins as a Flood Control Solution
Through engineering studies the Harris County Flood Control District (HCFCD) has identified a feasible regional flood control project which can be constructed with local funding and would...
Flood Control, Water Conservation, and Urban Change
Los Angeles County has one of the largest, most complex and effective systems of flood control and water conservation facilities in the United States. It includes 14 major dams, 125 debris...
Best Management Practices Overview
In the general list of best management practices for stormwater control, many practices are currently being used. On-line retention and detention ponds are used frequently and their importance...
Design and Effectiveness of Urban Retention Basins
Retention basins are recommended by practicing engineers and regulatory agencies for stormwater management in new land developments. They may require considerable space which limits their...
Detention and Retention Controls for Urban Runoff
The operating principle for retention devices is the interception and capture of runoff, preventing its direct release to surface waters. The most common mechanism by which captured runoff...
Proportional Weirs for Stormwater Pond Outlets
Many jurisdictions mandate that new developments must not cause runoff to flow downstream, during and after rainfalls, at rates higher than preconstruction. A common for controlling runoff...
Use of Spreadsheets in Stormwater Modeling
The use of microcomputers is becoming more and more prevalent in both large and small design offices as their first cost continues to decrease, as their capabilities continue to increase,...
Modeling Boundary Layer Flow in Stormwater Detention Basins
An iterative procedure involving an implicit finite difference numerical scheme was implemented on an IBM personal computer for solving steady, uniform and nonuniform boundary layer flow...
Centrifugal Modeling of Phosphatic Clay Consolidation
As a by-product of beneficiation, quantities of dilute clay slurry are produced which are stored in retention ponds. One method of accelerating consolidation is to surcharge the clay with...
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