A Stratified Percolation Model for Saturated and Unsaturated Flow Through Natural Fractures
The geometry of the asperities of contact between the two surfaces of a fracture and of the adjacent void spaces determines fluid flow through a fracture and the mechanical deformation...

Groundwater Recharge with Inclined Turbines

Reduction of Deep Percolation and Drain Water
Management of irrigated agriculture for control of toxic trace elements in agricultural drainage waters must include consideration of a variety of factors and their interactions with one...

Deep Percolation, Drainage and Water Quality
The purpose of this study is to illustrate and and qualitatively describe results of steady and transient numerical simulations examining the influence of drain spacing and depth on shallow...

Hydrogeologic Factors Affecting Trace Element Mobility
Alluvial deposits often comprise the aquifer beneath irrigated lands in the southwestern U.S. The presence of buried stream channels in, and layering of, shallow alluvial deposits are...

Bottom Plugging Dynamics in Recharge Basins
The Orange County Water District is investigating the reasons why percolation rates in deep recharge basins rapidly decrease. The interrelationship between microbiological activities in...

Urban Stormwater Quality Enhancement
Source Control, Retrofitting, and Combined Sewer Technology
This proceedings contains the papers presented at the Engineering Foundation Conference on Urban Stormwater Quality Enhancement - Source Control, Retrofitting and Combined Sewer Technology,...

Management of Leachate from Sanitary Landfills
Sanitary landfills remain the most common form of solid waste disposal in America. However, environmentalists are concerned about the degradation of ground water by leachate, which is...

Simple Furrow Advance Ratio Evaluation Technique for Upgrading Management
A simple procedure using the Advance Ratio (AR) is presented. It utilizes on-farm gathered information of advance time, water application time, and depth applied for furrow irrigated field....

Swedish Approach to Infiltration and Percolation Design
Design of infiltration and percolation facilities is similar to detention facilities. The storage volume of an infiltration basin being the ponding volume on top of the infiltration surface...

Artificial Recharge and Water Supply in The Netherlands
In 1984 infiltration by surface spreading was 156 million m3, serving 15% of total supply of drinking water in the Netherlands. Already for some...

Wastewater Recharge: Water Quality and Operations
The Green Valley Wastewater Treatment Facility began operations in its current configuration in 1981. It treats approximately 1 million gallons per day of municipal wastewater, with disposal...

On-Farm Management Alternatives to Reduce Subsurface Drainage in the San Joaquin Valley, California‚ÄĒConstraints to Implementation
The most cost effective approach for mitigating the drainage problem is incorporating on-farm management practices that reduce percolation and seepage losses to the shallow groundwater...

Comparison of Surge and Continuous Flow Irrigation in California
With the closure of the Kesterson National Wildlife Refuge to drainwater disposal and the pending limits on tailwater flows to the San Joaquin River, decreasing deep percolation is of...

Evaluation of Basin-Furrow Irrigation Systems
The division of the total flow into basin-furrows is analyzed using both energy and momentum principles. A zero-inertia model is applied to simulate the advance phase using different infiltration...

A Linked Stream-Aquifer System Model
A linked stream-aquifer system (LISAS) model is described. This model includes a deterministic sequential flow simulation component which generates hydrographs of surface runoff and deep...

Design of Final Covers for Landfills
Final covers or caps are incorporated into a completed landfill to limit the amount of moisture percolation through waste materials. A properly designed final cover system provides the...

An Experimental Study on the Effect of Wastewater Application in Dry Wells and Its Impact on Groundwater
A study was conducted in order to gather accurate information on the effectiveness of dry wells for use in wastewater disposal and the effect of such disposal practice on groundwater....

Modeling of Microbially Active Soil Columns
A soil-based microbial treatment process for on-site treatement of hazardous industrial wastewaters has been developed. The indigenous microflora of the soil are supplemented by the addition...

Estimating Wastewater Capacity of a Cedar Swamp
The response of water table to rainfall provided the basis for estimating the wastewater capacity of a northern Michigan cedar swamp which had been used for disposal of 30 million gallons...

 

 

 

 

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