USGS Washington Water Science Center
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WA198 - Newaukum Creek Basin Land Use/Hydrology Study - Completed FY1983
Problem - The Newaukum Creek basin in southwest King County is a small basin with well-defined current land use patterns. It lies on the fringe of an urban complex in the Puget Sound lowland and is expected to experience greater urbanization in the future. As an area becomes urbanized, the surface- and ground-water quality and runoff characteristics are inevitably changed. A study of the Newaukum basin offers an excellent opportunity to document the effects of urbanization and to project what effects further development will have on the basin.
Approach - Following an inventory of existing data, water quality and streamflow data will be collected through four storm events to evaluate input from agricultural, forested, and urban land use areas. Using data from existing sampling points, an evaluation of the ground-water flow system and its quality, and a study of the ground-water/surface-water relationships, especially where significant ground-water discharge may occur, will be made. After all data are collected, an areal appraisal will be made to determine if significant differences in runoff characteristics and/or water quality exist. If these differences can be related to land-use patterns, then a model simulating the surface- and ground-water quality in the basin will be constructed and additional data to calibrate and verify the model will be acquired.