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Old Aswan Dam
Egypt's Aswan Dam is almost 100 years old, and engineers performed tests of the masonry, conducting petrographic and chemical analyses. The High and Aswan Dam Authority of...

Grouting Pains (Available in Geoenvironmental Engineering Special Issue)
The article focuses on a new grouting technique for filling holes drilled during site investigation. The holes are grouted as the drill is withdrawn from the hole, instead of filled later....

Journal of Geotechnical and Geoenvironmental Engineering
The Journal of Geotechnical and Geoenvironmental Engineering covers the broad area of practice known as geotechnical engineering. Papers are welcomed on topics such as foundations, retaining structures,...

Project Object
Modeling and managing water systems is a notoriously difficult task, one made simpler by PRSYM, a new object-oriented software package created by a consortium of public utilities, government...

Application of One- and Two-Dimensional Flow Models for an Evaluation of Riverine Wetland Hydrologic Functions
Preservation and restoration of wetland habitats require maintaining a desirable hydrologic regime. The criteria for such a hydrologic regime are established based on marsh inundation...

Influence of Backwater on Headcut Advance
A study was performed to examine the influence of backwater level downstream of an overfall on headcut advance. The discharge, overfall height, and soil type were held constant while varying...

Distributed Parameter Hydrologic Modeling and NEXRAD for River Forecasting: Scale Issues Facing the National Weather Service
With the advent of NEXRAD (Next Generation RADar), the National Weather Service has the opportunity to move from current lumped parameter modeling to more of a distributed parameter hydrologic...

Application of High-Resolution Schemes to Free Surface Flows in Irregular Channels
A 1-D flow model employing a high resolution scheme based on the Total Variation Diminishing concept is applied to non-prismatic channels of irregular cross-section. The hydraulic properties...

Dormant Season Evaporation: Challenges to the Current Models
Dormant season evaporation is a critical component of the hydrologic balance and can be considered as the winter period or the time in which there is not a crop actively growing. It is...

Hydraulic and Engineering Considerations in Designing Constructed Treatment Wetlands for a Lake Restoration
A 12,600 ha (31,000 acre) hypereutrophic lake in central Florida is being restored by constructing a 2,020 ha (5,000 acre) wetland filter to remove suspended sediments and particulate...

Analysis of Bank Stabilization in Steep Complex Streams Using A Two-Dimensional Model
In cases where the channel is fairly uniform, and not divided, one-dimensional hydraulic models, such as HEC-2, generally give adequate results for scour evaluations and bank protection...

Secondary Containment Design Practices
Over the past several decades the design approach to containment of spills has not been consistent resulting in release of hazardous substances into the environment. The increased discovery...

Comparative Simulation of Oil Weathering
Oil spills in the aquatic environment, an unfortunately more and more common occurrence, cause contamination effects which negatively impact water quality, health of ecosystems and water...

Concept Ecology Integrated Project Engineering and Environment; Relating a Project to the Surroundings
The selected alignment of the 27.3 km long Veterans Expressway in Tampa, Florida was constructed for better access to the downtown area from a relatively rural but fast growing area of...

Overview of Drought Response Strategies
An overview of drought response strategies in the United States is presented. The paper focuses on tactical strategies for mitigating the impacts of drought conditions. A general structure...

Water Conservation Definitions From a Hydrologic Viewpoint
The definition of water management principles needed to satisfy societys water use objectives requires the use of terms and definitions that clearly describe the effects of various water...

Rethinking Well Efficiency
Many authors have suggested ways to evaluate water well efficiency. Most of these have either compared some form of measured drawdown with theoretical drawdown or measured the fraction...

Hydrodynamic Simulations in Sediment-Carried Contaminant Modeling for the Buffalo River, New York
Accurate prediction of hydrodynamics is of great importance to modeling contaminant transport and water quality in a river and to estimating potential exposure contamination levels in...

Development of a Regional Atmospheric-Hydrologic Model for the Study of Climate Change in California
An integrated model of atmospheric and hydrologic processes at regional scale over California has been developed in order to translate the large scale atmospheric conditions of critical...

Estimation of Flash Flood Potential for Large Areas
A methodology for determining the potential for flash floods in small basins within large geographical areas is presented. Geographical Information Systems (GIS) technology is used to...

 

 

 

 

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