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Engineering Aspects of Wetland Mitigation
Wetland mitigation demands a multi-disciplinary engineering approach, and a systematic collection, evaluation and analysis of data. The design of a constructed wetland addresses these...

Santa Ana River Mainstem Project
The Santa Ana River Mainstem Project consists of seven major features including the construction of 550 ft. high earth and rockf ill dam; raising the embankment by 28 feet of Prado Dam,...

Benefits of the Santa Ana River Mainstem Project
1. Need for additional flood control in Orange County. A. Orange County flood history. B. Increasing Population and development. C. Santa J River flood threat today. 2. How the Santa Axia...

Problem and Technical Solutions: The Seven Oaks Dam, Physical Elements of the Seven Oaks Dam Feature
Seven Oaks Dam is located in the upper Santa Ana Canyon approximately 1 mile from the canyon mouth. The site is 8 miles northeast of the city of Redlands in San Bernardino County on the...

Central Artery/Tunnel (CA/T) Project Environmental Permitting
The Central Artery/Tunnel Project is one of the largest public infrastructure projects in the United States. As such it poses major environmental planning and design challenges. The environmental...

PCE in Dewatering Flows?A Case Study Risk-Based Clean-Up Action Levels
Up to 70 micrograms per liter (?g/L) of tetrachloroethylene (PCE) was detected in dewatering flows associated with a construction project (Project) in the City of Los Angeles. Because...

Computing Flood Damage Reduction Accomplishment
Following flood events, the damage reduced by a federal flood damage reduction project must be computed to inform the public and assist officials in making decisions. This paper will describe...

Sanata Ana River Project Environmental Compliance with the National Environmental Policy Act (NEPA)
The National Environmental Policy Act(NEPA) was first enacted in. 1969, and became effective as of January 1, 1970. The law was intended to ensure that balanced decision-making occurs...

Local Sponsorship and Floodplain Management
An outline of Local sponsor for SARP and FEMA floodplain revisions....

Cooperative Approaches in Achieving Additional Water Conservation at Prado Dam
The Orange County Water District (OCWD) has successfully negotiated multi party agreements that provide for the use of Prado Basin for water conservation while ensuring protection of the...

Design and Implementation of On-Farm Surface Drainage Projects in the Humid Tropics of Mexico
In the humid tropics of southeastern Mexico, the Mexican National Water Commission (CNA) has constructed a network of collector drains for stormwater runoff removal. At the same time the...

The Timberlake Dam Failure: A Hydrometeorological Assessment
Extremely heavy rainfall over the Timberlake basin in southwest Virginia on 23 June 1995 caused an earthen dam to fail and resulted in fatalities. The meteorological conditions are examined...

Ecological and Biological Considerations in River Restoration
When planning river restoration projects, proper consideration must be given to the target resources of concern. This should include provisions to meet the physical, hydraulic, and biological...

Role of Vegetation in Hydraulics of Channel Restoration
Boundary layer theory is used to develop a backwater model for flows through vegetated waterways which can be employed to approximately estimate flow depth variation in channel restoration...

Anaheim State-of-the-Art Water Treatment Plant?Six Years from Conception to Completion
After six years of intensive planning, budgeting, pilot testing, design, and construction, the City of Anaheim, California, has successfully completed the modifications to the 15 mgd Lenain...

ASR Case Study?City of Salem, Oregon
The City of Salem, Oregon is developing an Aquifer Storage and Recovery (ASR) system to provide a 20 mgd capacity, 440 mg volume, emergency storage and peak day supplementary supply. When...

Education and Research Needs for Appropriate Technology
Appropriate technology and sustainable development are inextricably interrelated and the engineering profession is increasingly realizing that greater care must be given to taking these...

Economic Risk Analysis as a Research Directing Paradigm
Risk analysis could be used to direct a manageable, prioritized strategic plan for evaluating bridge scour research needs. Through risk analysis, the costs of research and the potential...

San Diego County Water Authority's Emergency Storage Project: A Major Planning Achievement
The San Diego County Water Authority (Authority) has been actively working to maximize the security of the future water needs of the community it serves. The Emergency Storage Project...

Selection of Sediment Transport Relations: Part I, Review of Sediment Transport Comparisons
There are a great number of sediment transport relations in existence in the world today. The engineer is often faced with the problem of choosing the most appropriate relation for the...

 

 

 

 

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