Revised Operation of a Dam and Reservoir to Achieve Environmental Objectives
Alamo Dam and Lake are located in the State of Arizona in the western part of the United States of America. The dam is located 62.8 km (39 mi) upstream (east) from the rivers confluence...

Tamarack Managed Groundwater Recharge Project
A managed groundwater recharge project was begun in the Fall 1996 at the Tamarack Ranch State Wildlife Area (SWA) owned by the Colorado Division of Wildlife near Crook in northeast Colorado....

Hydrogeology and Irrigated Agriculture
A review of drainage problems and groundwater processes on the west side of the San Joaquin Valley (SJV), California, provides useful perspectives on hydrogeology and irrigated agriculture....

Spatial Decision Support System for River Basin Management
MODSIM is a generalized river basin network flow model designed to simultaneously assure that water resources are allocated according to physical, hydrogeological, and institutional/administrative...

Rain and Gray Water Reuse Systems: The Hazard of Legionaries Disease
The Legionaries Disease is being more and more diagnosed. This infectious disease occurs when humans come in contact with the aerosol of contaminated water. The body of knowledge is growing...

Application of Simulated Annealing for Integrated Urban Water Systems: Infrastructure, Treatment and Re-Use Optimization
Escalating costs in providing water supply, waste water and storm water infrastructure and community concerns over the environmental impact of water harvesting and effluent disposal, have...

Finding a Better Cover
An ongoing field test at Sandia National Laboratories, in Albuquerque, New Mexico, compares a basic soil and a compacted clay landfill cover currently prescribed by Environmental Protection...

Rediscovering the Lost City
Since 1994, Kenneth R. Wright, P.E., of Wright Water Engineers, in Denver, has been studying evidence of civil engineering at the ruins of Machu Picchu—an ancient Inca city in the Andes...

Early Strength and Physical Properties in Accelerated Shotcrete

Shotcrete Lining Design Concepts for New and Rehabilitated Tunnels

Tunnel with Vision
Two tunnel boring machines that are being used to bore a pair of 6.6 km long tunnels under the Westerschelde estuary in the southern Netherlands must dig through loose sand and sticky...

Tied by Water
Water utilities in the Puget Sound region of Washington State face strict water quality standards and increasing water demands. Because of the Endangered Species Act, they are also under...

Returning to the Source
One hundred years ago, Las Vegas was a dry, dusty dot on the map with a population of only 100. The city grew up to become perhaps the gambling capital of the world, and more recently...

Geotechnical Testing, Observation, and Documentation
A geotechnical report, field and laboratory testing, as well as observation and documentation are all integral parts of most geotechnical projects. A technician is usually dispatched to...

A Full-Scale Seismic Testing Center for Soils and Structures

Evaluation Plan for the Group Evaluation of Soil Stabilization and Dust Suppression Products
This Evaluation Plan describes the nature and scope of an evaluation to determine the performance aspects and the environmental impacts of soil stabilization and dust suppression products. A number of...

Water In, Water Out
Moving water into and out of the Eastside Reservoir, which will be the largest body of freshwater in southern California, requires some of the largest pumping and water conveyance systems...

Soil Sampling
This manual addresses the principles, equipment, procedures, limitations for obtaining, handling, and preserving soil samples for geotechical investigations in support of civil and military...

On Martian Soil
Discussions are ongoing about how and when to build human settlements on other worlds. Many scientific discussions have focused on settlements on Mars, and how the initial colonists would...

From Pikes Peak to Mars
A graywater (sink and shower wastewater) reuse system is now being designed to serve a visitors' center and a nearby laboratory atop Pikes Peak, Colorado. If the Pikes Peak...

 

 

 

 

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