Computer Modeling Approach to Optimize Pumping for Containment of LNAPL Contamination in Unconfined Aquifers
This paper presents an approach to optimize pumping for immobilizing a floating contaminant consisting of a light non-aqueous phase liquid in an unconfined aquifer. The approach combines...
Ground Water Management in the Salt Lake Valley, Salt Lake County, Utah
The perfected and approved water right applications in Salt Lake Valley could potentially withdraw from the principal aquifer a quantity of water far greater than the annual recharge....
Ground Water Management for Wellhead Protection in a Confined to Semiconfined Aquifer, Salt Lake County, Utah
The 1986 Amendments to the Safe Drinking Water Act (SDWA) established the first nation-wide program to protect ground water resources used for public water supplies. The SDWA seeks to...
A Framework for Integrating NPS Pollution Prevention and Optimal Perennial Groundwater Yield Planning
Water management agencies are responsible for protecting and guaranteeing the sustained availability of groundwater of adequate quality. The presented procedure helps determine water Best...
Point Precipitation Models to Simulate Water Balance at a Constructed Wetland
We compare two point precipitation models in a water balance simulation performed at a wetland constructed to treat municipal wastewater. The first precipitation model uses a simple Poisson...
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...
Climate Change: Is Trouble Ahead for Water Engineers?
Very long range forecasts of future global warming from 2 to 5?C have been made as a result of the increase in carbon dioxide and trace gases in the atmosphere due to man's activities....
The Integration and Management of Ground- and Surface-Water Resources for Drought Response in New Castle County, Delaware
This paper reports on a program for the integration and management of ground- and surface-water resources for drought management purposes in the southeastern area of the Commonwealth of...
Controlled Versus Conventional Drainage Effects on Water Quality
Fertilized cropland is a nonpoint source of nitrogen and phosphorus which can contribute to nutrient enrichment problems prevalent in many surface water ecosystems. Research has shown...
Effect of Agricultural Drainage on Water Quality in the Mid-Atlantic States
Agricultural drainage development in the form of drainage alone and controlled drainage-subirrigation (CD-SI) has created conflicts with environmental concerns. Most concerns the lack...
Models for Simulating Hydrology and Water Quality on Drained Soils
Design and operation of drainage and related water management systems should consider both agricultural production and environmental impacts. This is currently required in many locations...
Effect of Agricultural Drainage on Water Quality in the Southeastern Coastal Plain
This paper is designed to consolidate selected research and results from investigations of the impacts of agricultural drainage on water quality in North Carolina, South Carolina, and...
Evaporation Pond Hydrology
Drainwater evaporation ponds are impoundment facilities designed for drainwater disposal by evaporation. In California, these ponds are typically constructed on the clay soils of the western...
Pond Water, Sediment and Crystal Chemistry
The chemistry of pond waters is characterized with respect to TDS, major solute species and trace elements. Similar chemical characteristics are presented for pond bottom sediments as...
Design and Management of Evaporation Ponds
The evaporation ponds in use in the San Joaquin Valley were designed and constructed to dispose of agricultural drainage water in a region of low soil permeability and high water table....
Legal and Regulatory Considerations in Agricultural Drainage Water Management
The institutional and jurisdictional framework applicable to agricultural drainage limits disposal of such flows to evaporation ponds for the foreseeable future. Originally seen as an...
Alternative Drain Water Management Options
Various options are available as alternatives to the shallow, large-sized, earthen evaporation basins that are customarily constructed for disposal of agricultural drainage water in California....
Nitrate Contamination of an Alluvial Aquifer Resulting from Irrigation and Geologic Control
A nitrate sampling program was conducted in the vicinity of a rural municipality to determine the source of nitrate contamination of the municipal groundwater supply. A finite-difference...
Watertable Control and Reuse of Drain Water
One of the short term alternatives for disposal of saline groundwater is direct reuse of agricultural subsurface drainage water for irrigation of the land being drained. If the groundwater...
Subterranean Disposal of Irrigation Drainage Waters in Western San Joaquin Valley
Subsurface drainage waters in the western San Joaquin Valley of California are laden with selenium and other toxic elements and above-ground disposal creates a hazard problem (Letey et...
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