Changing Course
Guidelines governing areas subject to 100-year flood consider the expected vertical elevation of floodwaters but overlook the possibility that a river channel may move laterally. A recent...
Headcut Analysis for Off-Channel Gravel Pits in Arid Environments
The study focuses on a large gravel pit located adjacent to the Santa Cruz River between the confluences with the Rillito and Canada del Oro rivers in Tucson, Arizona. These gravel pits...
Application of TOPNET in the Distributed Model Intercomparison Project (DMIP)
This paper describes the application of a networked version of TOPMODEL, TOPNET, as part of the Distributed Model Intercomparison Project, DMIP. The model implementation is based on a...
Estimating the Return Period of Multiyear Droughts
Characterizing the return period of hydrologic events has been an important subject in water resources planning and management studies for many decades. The alternative approach has been...
Stochastic Analysis of the Truckee River Flow System
The Truckee River system is a complex system that involves a number of hydraulic structures such as natural and artificial lakes and reservoirs and diversions. Streamflow data have been...
A Participatory Approach to Development of a Decision Support Tool
Effective decision-making in water management must consider both the physical characteristics of the system and the social, political, and institutional aspects. These latter aspects cannot...
Reengineering the Mississippi
For nearly a century, the Mississippi River Delta has been shrinking at a catastrophic rate. Civil engineers will play a major role in the multidisciplinary effort needed to reverse the...
Taking the High Road
Commuters on a congested toll highway in Tampa, FL, will soon have the option of rising above the rest of the traffic on three reversible express lanes. By elevating the new lanes on slender...
River Renaissance
Once dismissed as radical, dam removal is increasingly being viewed as a viable option for resolving the safety and aging dams. By participating in a growing number of dam removal projects,...
The Best Alternative
The City of Portland, Oregon, is using a hybrid contracting scheme that combines the scheduling advantages of design/build with the control of a construction manager arrangement to construct...
Firepower
The processes put in place by water utilities are designed with the quality of water normally received for treatment in mind. But the runoff from areas ravaged by fire can degrade that...
Optimal Selection of Rechlorinization Station in Water Distribution System by Optimization Techniques
The optimal rechlorination in water distribution systems was investigated by incorporating optimization techniques into a numerical water quality model (EPANET2). Four types of optimization...
Poetic Crossing
Named for Georgia's first national poet, Sidney Clopton Lanier, the new Sidney Lanier Bridge, spanning the Brunswick River in the city of Brunswick, is an elegant structure...
A Cleaner Coast Down Under
As part of a strategy to improve the quality of wastewater treatment in the Illawarra- a popular coastal region in Australia- the country's largest supplier of water and wastewater...
Northern Exposure
Traffic growth on a Massachusetts highway leading to New Hampshire called for new lanes and replacement of all of the bridges. Wide medians aided the work; narrow ones complicated matters....
Safe!
Rather than tear down a century-old warehouse that occupied the site of a planned baseball stadium, engineers renovated and reused the structure as part of the ballpark. Fans can view...
A New Identity
By repairing and relocating steel trusses, replacing deteriorating approach spans, and replacing what, at the time of its construction, was regarded as a daring concrete truss, engineers...
Bridge and Tunnel Security
The American Association of State Highway and Transportation Officials and the Federal Highway Administration recently convened a panel of esteemed researchers and experts in bridge and...
Liquid Assets
Educational Facilities and the fountains of a new plaza are making good use of water from a system that is remediating contaminated groundwater in Wichita, Kansas....
Outside the Box
Employing an innovative design that made construction quick and economical, the box girder structure carrying Highway N-2 over interstate 80 near Grand Island, Nebraska, became the first...
Return to search