Now showing items 1-7 of 7
A Survey of Ditches Along County Roads for Their Potential to Affect Storm Runoff Water Quality
(University of Washington Center for Urban Water Resources Management, 2000-07)
Twenty years of research have demonstrated that the water quality of stormwater runoff can improve after flowing in a well-vegetated channel, relatively slowly, at a depth below the vegetation height. These channels are commonly called “biofiltration swales.” Roadside ditches that are vegetated also may have the potential ...
Forest Cover, Impervious-Surface Area, and the Mitigation of Urbanization Impacts in King County, Washington
(University of Washington Department of Civil and Environmental Engineering, 2000-09)
For decades, watershed urbanization has been known to have severe consequences on aquatic systems. Although the problem has been long articulated, solutions have proven elusive because of the complexity of the problem, the evolution of improving but still- imperfect analytical tools, and socio-economic forces with different ...
A Rapid Land Cover Classification Method for Use in Urban Watershed Analysis
(University of Washington Department of Civil and Environmental Engineering, 2003-03)
Because of the profound effect of urban development on aquatic systems, characterizing the land cover of a region is critical for a variety of resource management applications. In the Pacific Northwest, this characterization has been used most commonly to correlate the intensity of human activity with observed stream or ...
Urbanization and the Natural Drainage System -- Impacts, Solutions, and Prognoses
(University of Washington Water Center, 1991)
This paper describes the causes and effects of urban-induced changes to the hydrology of a drainage basin. To understand the cause of change, the hydrologic behavior of the undisturbed basin first will be explained. The effects of development are then recognizable as the near-inevitable consequences of hydrologic changes. ...
Coping with Stormwater -- How Much Does it Cost?
(University of Washington Water Center, 2007-01)
This fact sheet covers stormwater management. The Puget Sound region is analyzed as a case study. The various types of costs are described: flooding and property damage, degradation of water quality, and loss of habitat. Some recommendations are presented.
The University of Washington Permeable Pavement Demonstration Project -- Background and First-Year Field Results
(University of Washington Water Center, 1996)
Our study of permeable pavements has evolved from a growing recognition of the limitations of traditional stormwater management. To keep water in the soil we must allow access of water to that soil across much of the landscape, developed as well as undeveloped. This will not be practical everywhere, but where previously ...
Urban Stream Rehabilitation in the Pacific Northwest
(University of Washington Department of Civil and Environmental Engineering, 2001-03-30)
Our goal in this project has been to develop a robust approach to urban stream rehabilitation, using examples from the Puget Lowland region of western Washington, that blends knowledge from the physical, biological, and social sciences by: 1) documenting the consequences of urban development on urban streams; 2) understanding ...