Landslide Dams
Processes, Risk, and Mitigation
Landslide dams have proved to be both interesting natural phenomena and significant hazards in many areas of the world. A few of these blockages attain heights and volumes that rival or...
Pressuremeter Tests and Shoring Wall Design
Pressuremeter testing was used as an integral part in the design of the temporary tieback shoring wall for the Columbia Center office building in Seattle, Washington. Pressuremeter testing...
Generalized Methodology for Simulating Mudflows
In this paper, a one-dimensional dynamic flood-routing model, for non-Newtonian fluid properties, is described and applied to two different mudflow events: Holbrook Canyon, Utah, and Mount...
Evaluation of PCP/Oil Spill on CFT Indian Reservation Near Nespelem, Washington
This paper presents the immediate action taken, the field work performed, and the engineering analysis performed in response to a spillage of a solution of pentachlorophenol (PCP) and...
Seattle's Central Waterfront
The character and identity of Seattle are based largely on its extensive waterfront areas. The city has approximately 90 miles of shoreline, one of the benefits of possessing a varied...
Bellevue's Urban Storm Water Permit and Program
The Bellevue Storm Water Management Utility has been in operation for over ten years. At its initiation, flooding and erosion control were its main mission. Today with increasing focus...
Waterfront Planning and Development
These papers were presented at the Waterfront Planning and Development Symposium held in October, 1986 during the Boston ASCE Convention. The Symposium presented an all inclusive picture...
The State's Prospects for Infrastructure Rehabilitation
In November 1982, at Governor Spellman's initiative, Washington State became one of six states participating in the National Infrastructure Analysis, sponsored by the Joint...
Infrastructure Management and Planning for the City of Seattle
This paper summarizes the current planning effort that the City of Seattle's Engineering Department (SED) is undertaking for Transportation Infrastructure Management. The...
Effective Environmental Management: The Northeast Corridor Experience
The Northeast Corridor Improvement Project (NECIP) is a 2 billion public transportation project involving improvements to Amtrak's 456-mile main rail line between Washington,...
Computer-Aided Drought Operations
A simulated drought operations exercise is conducted annually in the Washington, D. C. area. Local water supply utilities work with the Interstate Commission on the Potomac River Basin...
Yakima Supervisory Real-Time Monitoring and Control System
The Yakima Remote Control System is a case study application of supervisory control and data acquisition (SCADA) concepts for the operation and monitoring of a large water resources project....
Diagnosis of Wastewater Treatment Processes
This paper presents an approach to the development of an expert system for aiding the operation of an activated sludge wastewater treatment facility. The expert system incorporates a diagnostic...
A Post-Audit of the Potomac Eutrophication Model
An unusual, unexpected, and unpredicted event - the Potomac Algae Bloom of 1983 - prompted a post-audit examination of the primary tool being used for guiding the continuing development...
Three-Dimensional Simulation of Flow and Sewage Effluent Migration in the Strait of Juan de Fuca, Washington
The purpose of this study was to evaluate effects of a proposed sewage effluent discharge located in the Strait of Juan de Fuca just outside of Sequim Bay, Washignton. The three-dimensional,...
Gains and Losses of Commingled Waters in a Stream
In a legal dispute in the State of Washington (Colville Confederated Tribes vs. Boyd Walton, Jr. , Farmer), it became necessary to determine the proportion of transmission losses sustained...
The Failure of Section 312 of the CZMA
Coastal Zone Management Act, as amended, provides for a continuing evaluation of a state's Coastal Zone Management Program. This paper reviews the history and evolution of...
Simulating Flow in the Tidal Potomac River
A one-dimensional unsteady flow model has been applied to the tidal Potomac River, including its major tributaries and marginal embayments, between Washington, D. C. and Indian Head, Md....
Tidal Flooding Study for a Seattle Watershed
The paper reports on a study to develop a correlation between rainfall volumes and tidal storm surges based on recorded rainfall and tide data. This correlation was used to establish tidal...
State Space Approach to Flood Stage Estimation
A flood routing and stage prediction model is developed using the techniques of State Space and Kalman filtering. The governing equation is the physically based hydrologic method of flood...
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