A Wetland Habitat Assessment Method using Birds
A wetland habitat assessment technique (HAT) using birds as indicators of habitat quality was developed from the method of V. R. Holmes et al. , (1986) and J. W. Graber and R. R. Graber...
California's Retreating Shoreline: The State of the Problem
Approximately 86 percent of California's 1715 km of shoreline is eroding. Nearly ten percent of this oceanfront has now been armored. With present day costs of shoreline protection...
A Survey of Selected Arctic Petroleum Drilling Locations in the Alaskan Coastal Arctic Region (
There exists in the central coastal region of arctic Alaska, a number of drill site locations which were used to explore for oil and gas in the 1960's and 1970's....
Bulkhead Instability in Soft Soil
This paper presents a case study involving the severe disturbance of the subsurface soils in front of an existing bulkhead caused by the berthing of a jack-up type, offshore drilling vessel....
A Railway Protection?Coastal Structures on Tyrrehenian Calabrian Coastline
The stretch of Calabrian coastline facing the Tyrrehenian Sea has for many years undergone severe erosion, exposing the Battipaglia-Reggio Calabria railtrack to the direct action of waves....
Controls on the Development and Operation of Shrimp Farms in Ecuador
Best sites for shrimp farm in Ecuador are located in the beach and bay zone. Another option is upland. Several procedures for obtaining a lease in the beach and bay zone or to buy vacant...
Site Characterization for Waste Disposal
Site selection is one of the key decisions in waste management. Site selection involves a conflict analysis which considers various engineering factors including geotechnical, as well...
Evaluation of Waste Disposal Sites Using Geotox
GEOTOX is a knowledge-based expert system designed to assist in the identification and classification of waste disposal sites. Existing methodologies such as formal or qualitative risk...
Quake Resistant Transport
An approach which begins by assessing the vulnerability of a transportation system's key components can help transportation engineers plan for and limit earthquake damage....
Dioxins and Human Health
Few environmental issues have attracted as much attention and controversy as the dioxins. Considerable expense has been incurred investigating effects in human populations and laboratory...
Lawyer on a Microchip
Construction in the 1980s have become a complex, high stakes, intensely competitive business. For architects and engineers involved, the prospect of lawsuits has grown tremendously. An...
Plume Underflow Interaction in Natural Enclosures
A preliminary investigation into the feasibility of using a hot-water plume to intercept and entrain a cold underflow is presented. The investigation involved an adaptation of existing...
An Investigation of the Alcatraz Disposal Site
The Alcatraz dredged material disposal site in San Francisco Bay is a dispersive site that is not intended to accumulate disposed sediment. However, the recent discovery of shoaling at...
Sedimentation of Summit North Marina Connected to C&D Canal
Possible sedimentation problems at the proposed site of the Summit North Marina were investigated and reported. This brief paper summarizes the detailed results given in the report. The...
Controlled-Drainage Supplements Subirrigation in Humid Regions
A computer simulation was conducted using climate and soil conditions of the humid southern U. S. to demonstrate optional operating methods for dual controlled-subdrainage/subirrigation...
Evaluation of Water Quality from a Drainage-Subirrigation System in Georgia
Nitrate-N, Ammonium-N and Phosphate-P concentrations were measured from shallow subsurface wells and outlets of a drainage-subirrigation system in the Georgia flatwoods for comparison...
Subsurface Drainage for Erosion Reduction on Croplands of Northwestern Oregon
Subsurface drains installed as a relief system on sloping cropland reduced surface runoff and soil loss from silty soils with underlying slowly permeable layers in northwestern Oregon....
On-Farm Management Alternatives to Reduce Subsurface Drainage in the San Joaquin Valley, California?Constraints to Implementation
The most cost effective approach for mitigating the drainage problem is incorporating on-farm management practices that reduce percolation and seepage losses to the shallow groundwater...
Subsurface Drainage System for the Klamath Project
The U. S. Bureau of Reclamation's Klamath Project was authorized in 1905 for irrigation purposes. A subsurface drainage system was constructed in the public lands within the...
Selenium: Essential Nutrient or Toxic Threat?
The essential nutrient selenium is believed responsible for numerous deformities, reproductive failures, and deaths of migratory birds at Kesterson Reservoir in the San Joaquin Valley,...
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