Swirl Concentrators Revisited. The American Experience and New German Technology
The Swirl Concentrator is a small, compact, 'no moving parts' solids separation device. Its function is to act as as a static combined sewer overflow (CSO) regulation...
Source Tracing of Toxicants in Storm Drains
Sources of toxic chemicals in storm drains are often difficult to locate and even more difficult to control. Receiving environment chemistry, storm drainage maps, land use information,...
Manhole Junction Flow
When a sewer surcharges, a basement floods, or sewage overflows, the likeliest source of the problem is sewer junction manholes. Poorly designed ones act as bottlenecks. Study of a few,...
Domestic Sewage Disposal Pribilof Islands Small Diameter Ocean Outfalls
This paper presents aspects of planning, permitting, design, and construction of two unique small diameter ocean outfalls for the Native Alaskan Villages of Saint George and Saint Paul,...
Dune Building on a Developed Coast: Lavallette, NJ
After the Federal disaster declaration due to the March, 1984 northeast storm, FEMA's Interagency Hazard Mitigation Team recommended to the Municipality that it suspend the...
Marine Multi-Purpose Zone Project
Since most of the big cities in Japan locate near seacoast, the sea has been playing great role in their developments. It is necessary to make a good quality of public stock, coping with...
Storm Surge Model Sensitivity in Estuarine Areas
Under the auspices of the National Flood Insurance Program (NFIP), a numerical study was undertaken to determine the sensitivity of predicted storm tide levels within an estuary to hurricane...
A Benthic Environmental Evaluation Protocol for a New Municipal Marine Outfall
Concurrent with siting studies to relocate a 72 mgd secondary outfall diffuser in deep water (200 meters), the Municipality of Metropolitan Seattle initiated a three year baseline study...
California Coastal Literature Inventory System
As part of the Coast of California Storm and Tidal Waves Study the Army Corps of Engineers developed a microcomputer database of over 2300 coastal references for California. This menu...
South Carolina Coastal Council Beach Monitoring Program
The South Carolina coast was divided into three sections by general morphologic features. Beaches were then inventoried, measured and assigned priorities based on degree of development,...
Homer Spit Storm Damage Reduction
Homer Spit is a natural spit formed by littoral processes at the confluence of Kachemak Bay and Cook Inlet in Southcentral Alaska, some 192 km southwest of Anchorage. The immediate erosion...
Case Study on Fifty Years of Seawall and Groin Construction, Tybee Island, Georgia
The purpose of this paper is to document and analyze the problems, proposed solutions, and results of local, state, and federal attempts to control erosion and storm damage at Tybee Island,...
Nantucket's Broad Creek Opening
On September 20-21, 1961 a severe coastal storm, the remnant of hurricane Esther, formed a 1,200 foot wide, 20 foot deep opening in a barrier beach (Smith's Point at Broad...
Toxicant Reduction in the Dunny Way CSO
Combined sewer overflows (CSO) are a source of pollution to receiving waters and need to be controlled. As an interim approach to improving environmental conditions at this site in Seattle,...
Sewage Trapping by Water Parcels in Puget Sound
Sewage effluent entering Puget Sound, Washington, often becomes trapped in discrete parcels of water. The parcels are easily identifiable in vertical density profiles as layers of well-mixed...
Coastal Flood Control Facility Design Parameters
The development of design parameters for a storm runoff detention facility located on lowlands adjacent to an estuary and discharging into the tidal zone are discussed. The parameters...
Northwest Regional Coastal Study: An Integrated Approach
The Northwest Regional Coastal Study as proposed consists of: (1) identification of problems; (2) inventory of available information; (3) prioritizing problems and study areas; (4) conducting...
Athens Siphon and Outfall
More than 130 million gallons of untreated domestic and industrial wastewater are discharged each day into the sea near Athens. To mitigate this situation, the government of Greece is...
Hydraulic Design Limitations for Gravity Flexible (Non-Rigid) Plastic Pipes Flowing with a Free Water Surface
Hydraulic design limitations are necessary for gravity plastic pipes when designed for use as a sanitary sewer, flowing part full with a free water surface. The limitation for pipes designed...
Imbrication of Tabular Boulders
Analysis of moments on tabular boulders projecting into a uniform stream indicates that a tabular boulder dipping downstream is unstable and can be overturned by velocities expected during...
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