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GIS-Integrated Surface Hydrology System
A GIS-based stormwater management system has been developed for the Pasco County Board of County Commissioners. The model draws all spacial data including watershed parameters, network...

Water Resources Management Using a Geographic Information System over a Wide Area Network
To assist in the management of water resources in the Santa Ana River Basin, in Southern California, the Bureau of Reclamation in Denver, Colorado and the Santa Ana Watershed Project Authority...

Fate/Transport Modeling of Immiscible LNAPL in Unsaturated Aquifers
In the past ten years since enacting CERCLA and SARA regulations there is a lack of model to adequately address the fate/transport of immiscible constituents in groundwater systems. This...

Simulation of Contaminant Migration Under Conditions of Declining Ground Water Levels
A ground water flow and transport model was developed to simulate the migration of contaminants originating from an industrial site. The development and calibration of the model were based...

Design and Analysis of an Irrigation Pond Using Urban Stormwater Runoff
Stormwater held in detention ponds can be reused for irrigation. A simulation of a mass balance on pond storage volume using rainfall and evaporation data for selected areas is presented...

Retrofitting a Detention Facility for Improved Quantity Control
Historically, detention facilities in the U.S. were first designed, constructed and operated for the single purpose of flood control. This led to a second phase, in which recreation and...

Combined Sewer Overflow Abatement by Means of Detention Basins and Stormwater Infiltration
The conventional approach to abate the pollution loads from combined sewer overflows (CSO's) is to include detention basins. The same reduction in CSO loads may be obtained by infiltrating/percolating...

A Log-Triangular Design Hyetograph for Stormwater Management
A method is developed to generate a log-triangular design hyetograph from historical rainfall data. The method considers the characteristics from other commonly used methods for design...

Performance of Stormwater Ponds and Wetland Systems
The use of stormwater pond and wetland systems to improve the quality of urban stormwater runoff has become an increasingly important strategy to protect streams in developing areas. This...

Artificial Neural Networks as Unit Hydrograph Applications
A simple artificial neural network is shown to have the same structure as the application of a unit hydrograph. An artificial neural network representing such an application was constructed,...

Augmented TINFLOW: A Deterministic Runoff Model with a Stochastic Rainfall Input
Augmented TINFLOW consists of a deterministic runoff model based on a Triangulated Irregular Network (TIN) description of a watershed. The rainfall input is created by simulating convective...

Real-Time Forecast and Its Use for Bradley Lake Project
A forecast model was developed to assist the project operator to make a realistic prediction of lake inflow and to optimize the water usage in Bradley Lake which has an active storage...

Protection of a 700-GPM Municipal Well Field with a 10-GPM Barrier Well: An Update After 8 Years of Remediation
In December 1978, a municipal well field developed by the Town of Acton, Massachusetts was shut down because of contamination by 1,1-dichloroethylene. Chemicals and process wash water...

Adjustment of Groundwater Quality Models
Groundwater quality models have been used lately in solving cases dealing with groundwater flow and pollutant transport problems. Finite element method is used in such problems and is...

Ecological Concerns of Regional vs. On-site Facilities
New federal stormwater regulations are ushering in a second generation of stormwater BMP's. Traditionally designed to achieve quantity control, BMP's are now being evaluated for their...

Comprehensive Stormwater Management Planning
Prince William County, Virginia and the Environmental Protection Agency (EPA), Region III, are implementing an interagency, interdisciplinary stormwater management demonstration project....

National Weather Service Operational River Forecasting in a UNIX Environment
The mission of the National Weather Service (NWS) includes providing river and flood forecasts and warnings for protection of life and property, and providing basic hydrologic forecast...

Snow Estimation?A GIS Application for Water Resources Forecasting
In the Western United States approximately 75 percent of the annual runoff results from snowmelt. Observations of the snow cover provide an important source of information for forecasting...

In Situ Bioremediation Via Horizontal Wells
The U.S. Department of Energy, Office of Technology Development, has been sponsoring full-scale environmental restoration technology demonstrations for the past 3 years. The Savannah River...

A Semi Passive Nutrient Injection System for In Situ Bioremediation
A permeable cutoff wall is installed across the path of a contaminant plume. The water in the wall can be amended with the desired nutrient solution using pumping and injecting wells within...

 

 

 

 

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