Accession Number : ADA242497

Title :   The Mill Creek Drainage Basin: An Historical Overview of the Lower Green River.

Descriptive Note : Final rept.,

Corporate Author : SHAPIRO AND ASSOCIATES INC SEATTLE WA

Personal Author(s) : Erickson, Barbara ; Boule, Marc

Report Date : 18 MAY 1990

Pagination or Media Count : 110

Abstract : The purpose of this study is to provide a review of historical wetland conditions in the lower Green River Valley, as well as changes in infrastructure and land use. There is also characterization of changes in the wetland environment and generalized land use patterns of the Mill Creek Drainage Basin (a sub-basin of the lower Green River Valley) between 1850 and 1990. This characterization provides historical points of reference and comparison for present and future wetland analysis, planning and management. The lower Green River Valley was characterized as having extensive flood plain forests before Euro-American settlement. Extensive wetland areas were also found in the valley. Euro-American settlement resulted in a conversion of almost all of the forested areas first to agriculture and then to industries. This conversion to industrial use is ongoing along with associated suburbanized and commercial activity. Extensive flood control modifications have altered the valley's hydrology, however, significant areas of wetlands still remain.

Descriptors :   AGRICULTURE, BASINS(GEOGRAPHIC), COMMERCE, CONVERSION, DRAINAGE, ENVIRONMENTS, FLOOD CONTROL, FLOOD PLAINS, FORESTS, GREEN(COLOR), HYDROLOGY, INDUSTRIES, LAND USE, MODIFICATION, PATTERNS, RIVERS, STREAMS, VALLEYS, WETLANDS.

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering
      Geology, Geochemistry and Mineralogy
      Administration and Management

Distribution Statement : APPROVED FOR PUBLIC RELEASE