National Water Quality Assessment: Moving from Measurement to Understanding
The USGS National Water Quality Assessment (NAWQA) program began in 1991. The objectives of the program were to characterize the quality of the Nations ground and surface water, assess...
Implementation of the Phase II Stormwater NPDES Permits
In the 1987 amendments to the Clean Water Act, Congress directed the United States Environmental Protection Agency (EPA) to establish a permitting framework under the National Pollutant...
How the Impacts of Urbanization Are Being Addressed in the Los Angeles River Watershed
Due to an increased interest and concern about the Los Angeles urban environment, studies have begun to focus on the local water cycle and the impact of impervious land on the Los Angeles...
Using Tracer Response Curves to Quantify Hydraulic and Channel Complexity of Prairie Creek, Northwestern California: Implications for Over Wintering Habitat for Juvenile Coho Salmon
This study measured and compared aspects of channel structural complexity with hydraulic complexity at a range of flows including winter storm flows. Five 200-meter reaches containing...
Investigation of Flood Protection from Alluvial Fan Flows and Minimizing Impacts to a Sensitive Habitat Preserve: Whitewater River Basin, Coachella Valley, California
The study describes and evaluates (1) the baseline conditions to hydrology, hydraulics, wind transport of sand, sediment transport by fluvial process, the environment, economics, and (2)...
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...
Design Considerations for the North Railroad Alluvial Fan Levee System in Boulder City, Nevada
This paper presents a drainage study for a flood control levee system in Boulder City, Nevada. This levee system is located below an alluvial fan watershed and was proposed to protect...
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....
Water Control Data System Modernization: Huntington District, Corps of Engineers
The Water Control Data System (WCDS) provides the tools that are used in making daily operational decisions for 35 reservoir projects and 9 navigation structures in Huntington District....
The Power of the Press Release
Small businesses often find it is difficult to obtain the same kinds of news coverage that larger firms receive. But a simple process of establishing a media contact list and generating...
The Future of Airports
Through a series of meetings and surveys, professionals involved in the design, engineering, construction, and maintenance of airports throughout the United States and Canada have identified...
Shoring Up Coastal Engineering
Half of Americans live within 50 mi (80 km) of the coast, although it is becoming increasingly risky and expensive to do so. The importance of ports to the global economy coincides with...
From Competitors to Partners
Embracing a competitor as a business partner may be somewhat uncomfortable for small engineering firms�at least initially. There is natural concern about what a fellow team member�who...
Structural Steel Selection Considerations
A Guide for Students, Educators, Designers, and Builders
Sponsored by the Structural Engineering Institute of ASCE; American Institute of Steel Construction, Inc. This report describes the properties of steel...
Bell's Bridge Rehabilitation
Bell's Bridge carries Tidewater Drive, a major urban arterial in the City of Norfolk, Virginia, over Wayne Creek, a tributary of the Lafayette River. During a routine inspection in 1995,...
Seismic Design of Highway Bridges: Recommended Specifications
Under the AASHTO-sponsored National Cooperative Highway Research Program (NCHRP), a joint venture of the Applied Technology Council and the Multidisciplinary Center for Earthquake Engineering...
Magnetic Perturbation Imaging for Prestressed Concrete Evaluation
Many prestressed concrete bridge structures in the United States and other parts of the world are over thirty years old and have shown various signs of distress. Corrosion or fracture...
Fragility Curves and Seismic Loss Estimation Methodologies Based on Insurance Data
Loss data for single family dwellings from the 1994 Northridge, California, earthquake were correlated with ground motion with the aim of determining ground motion-based fragility curves....
Blast Mitigation Research and Technology Transfer
Terrorists continue to use bombs as a weapon of choice. Recent bombings targeted against the United States, such as the World Trade Center, Murrah Federal Building, Khobar Towers, and...
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