# Hydrology of the Upper 12 Inches of Well Drained: Imperfectly Drained: and Poorly Drained Mineral Soil Profiles

Underground Liquid Waste Disposal

*As of mid-1973, at least 278 industrial wastewater injection wells had been constructed in 24 states. Statistics concerning these wells are presented and their environmental impact appraised....*

Hydraulic Design of Vertical Stilling Wells

*Vertical stilling wells are economical and ideally suited to dissipate high energy flow. Model studies established general design criteria for vertical stilling wells using a standard...*

South Platte River Flow Correlations

*It is pointed out that an effective management of the water resources of the South Platte River will require a quantitative prior knowledge of what effects changes will have. A computation...*

Determining Optimal Well Discharge

*The cost of pumping ground water is a major factor in water supply. It is necessary to pump a given well at the discharge that maximizes the net benefit of the operation. Previous criteria...*

Air Entrainment in Surface Rollers

*Studies indicate that surface rollers are well suited as hydraulic aeration devices for water quality enhancement. An important indicator concerning the efficiency of such devices is the...*

Concepts for Ground-Water Regulatory District

*With more use of ground water, greater attention must be given to the environmental side of well field design. Where serious environmental problems, such as lowered lake levels, are a...*

Analytical Model for Management of Alluvial Aquifers

*Under the doctrine of prior appropriation, the recent inclusion of wells in the existing priority system of water rights in Colorado has created new problems for water management in tributary...*

Radial Dispersion in Ground-Water Flow

*Singular perturbation techniques are used to obtain approximate concentration distributions that result when a recharge well discharges a finite volume of radioactive pollutant into an...*

Optimal Pumping for Aquifer Dewatering

*A method is presented for determining the optimal well locations and steady-state pumping scheme for dewatering a site. It uses the finite difference approximations of the ground-water...*

Method of Additional Seepage Resistancesâ€”Theory and Application

*The method for additional seepage resistance based on the local consideration of zones of sharp flow deformation caused by partially penetrating boundaries is described. The allowance...*

Drawdown in Compressible Unconfined Aquifer

*Elastic response of unconfined formations to pumping is considered. The nonequilibrium drawdown equation for a partially penetrating well discharging at a constant rate in an unconfined...*

Orthonormalization Applied to Ground-Water Flows

*The Gram-Schmidt orthonormalization procedure is presented as a numerical method easily adaptable to digital computation for the solution to steady-state ground-water flow problems. The...*

Transient Flow to Finite Well in Unconfined Aquifer

*The problem of a nonsteady radial flow toward a finite well in an unconfined aquifer is solved by a form of the Galerkin method. The equations are reduced to a set of coupled nonlinear...*

Contamination of Discharge Well from Recharge Well

*The recovery of waste water by a discharge well from a neighboring recharge well is studied. The wells are situated in a confined aquifer through with there is uniform flow. The local...*

Validity of Dupuit-Forchheimer Equation

*The Dupuit-Forchheimer equation describing unconfined ground-water flow is limited by the underlying assumptions inherent in its derivation. A validity criterion is developed from an analysis...*

Numerical Solution of Multiphase Well Flow

*A method is presented for numerically solving immiscible multiphase well flow considering three compressible fluids, two liquids, and one gas, and assuming isothermal conditions. Capillary...*

Well Efficiency and Skin Effect

*The purpose of this paper is to present a technique for determining the skin effect using previously derived flow equations. This technique is applicable only to wells affected by losses...*

Tensiometer Use in Shallow Ground-Water Studies

*Tensiometers installed with a ground surface or other reference can be used to determine ground-water equipotentials and the position of the water table in the field. Tensiometer determined...*

Water Well Design for Earthquake-Induced Motion

*Earthquake records indicate negligible damage to adequately constructed water wells that are located away from faults or areas of unstable ground. For nuclear power plants, three factors...*

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