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...
Pumping or Slurry Walls?Which Works Best for Groundwater Containment?
Results of a numerical optimization model capable of designing containment systems for sites with three-dimensional groundwater flow indicate that site hydrogeology and economic considerations...
Impact of Urbanization on Storm Runoff
The engineering design of hydraulic structures is directly associated with the estimation of design parameters connected with extreme events. Methods of estimating extreme events typically...
Manning's n From Experiments with Rainfall-Runoff on Portland Cement Concrete Surfaces
Experiments were conducted under artificial rainfall on Portland cement concrete (PCC) surfaces with variable mean texture depths (MTD) and slopes (S). Rain rates were varied up to 3 in/hr...
Field-Scale Research at the TVA Columbus Groundwater Research Test Site
TVA has been conducting large-scale field experiments at their Columbus Groundwater Research test site at Columbus Air Force Base since 1983. This work has been performed in cooperation...
Sophisticated Computer Tools for Water Management
Sophisticated new computer tools were applied to develop a water management plan for Nassau County, Long Island. A regional groundwater flow model and two 3-dimensional saltwater intrusion...
Urban Wetlands for Multi-Disciplinary Stormwater Management
The evaluation of a stormwater management wetlands facility, from conceptual planning stages to final construction and operation, involves the interaction of many disciplines and agencies....
County Hydrology, Regional Approach
The effort to update the regional hydrology methods of the Santa Clara Valley Water District (District) entails a series of tasks that are long and difficult. This paper enumerates the...
Future Urbanization Effects on Occoquan Dam PMF
The Fairfax County Water Authority's Occoquan dam, in northern Virginia, are being anchored at a cost of about $2 million. The reason is to increase stability due to an increased PMF estimate...
Implementation of Storm Water Management Programs in the California Land Development Process
One of the most powerful and encompassing tools for introducing storm water management programs to land development is through California's general plan process. California cities and...
Transfer Function Modeling of Evapotranspiration
The correct estimation of evapotranspiration is a fundamental step in planning, design and operation of most water resources projects. The dependence on various climatological parameters...
The Covington Master Drainage Plan
Located in the southeastern portion of King County, Washington, the 1,240-acre Covington area had been identified in 1985 as an 'urban activity center,' a place designated for regional...
Managing Urban Growth an Irrigation District's Perspective
Urban growth within the Turlock Irrigation District has converted some property from agricultural to urban use. The District has established policies and developed documents and procedures...
The Potential of Mediation for Resolving Conflicts Between Irrigation and Urban Water Users
This paper discusses the potential of mediation as a means of managing and resolving conflict productivity. Conflict over allocation and use of water may arise from technical or substantive...
Sustained Yield of the Provo Groundwater Basin
The sustained yield of the Provo Groundwater Basin has been determined by a correlation analysis of the change in groundwater levels with the April-October stream flow at the mouth of...
Parameter Sensitivity of a Non-Linear, Process-Based Soil Erosion Model
Process-based, parameter distributed models have become widely accepted tools to predict the impacts of land use changes. Unfortunately these computer models are becoming more complex...
Chaos Characteristics of Tree-Ring Series
Thirteen tree-ring series from the Salt and Verde River basins in Arizona are studied to distinguish between chaos and randomness. A chaotic moving average model that represents the time...
Probabilistic Characteristics of Elapsed Time Between Rainfalls
The elapsed time between rainfalls is analyzed statistically using the hourly rain data at two locations: the flat-plain at Urbana, Illinois and the northwestern Appalachian foothills...
Analysis of Spatial and Temporal Precipitation Data Over a Densely Gaged Experimental Watershed
Historical precipitation data from the densely gaged Walnut Gulch Experimental Watershed in southeastern Arizona are used to quantify watershed-scale properties of precipitation. Daily,...
Watershed Simulation for Characterizing Droughts Under the Influence of Climate Change
The paper describes a model for simulating soil moisture deficit on a daily basis using historical rainfall and climatic data for the analysis of droughts. Distributed parameter hydrologic...
Return to search