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Filtering by: Subject Tualatin River Watershed (Or.) Academic Affiliation Geosciences

Landscape change in the Tualatin Basin following Euro-American settlement

Creator:

Shively, David D. and Oregon State University. Water Resources Research Institute

Abstract:

The Tualatin Basin landscape has undergone extensive change since the initiation of Euro-American settlement, with important consequences for basin hydrology and water quality. Changes that include the isolation of the Tualatin River from its floodplain areas, losses of important wetlands and riparian areas, and urbanization associated with population growth in...

Resource Type:

Technical Report

Full Text:

(Surveyor General's Office, 1852) . 9 debris or drift jams . The Tualatin River, along with other
Land cover change along the Willamette River, Oregon

Creator:

Oetter, Doug Rudolph, 1962-

Abstract:

The Willamette River and its floodplain in northwest Oregon have changed dramatically since European settlement. At one time, the river was a vast complex system of braided channels with a broad floodplain forest; it has now been simplified by channelization and dams, and the forest has been removed to support...

Resource Type:

Dissertation
Spatial and temporal patterns of windthrow in the Bull Run Watershed, Oregon

Creator:

Sinton, Diana Stuart

Abstract:

Throughout the 20th century, windthrow has affected forests in the Bull Run watershed, a 26,500 ha basin that is the principal water source for the city of Portland, Oregon. Windthrow from storms in 1973 and 1983 was mapped into a geographic information system (GIS) and compared to a 1931 windthrow...

Resource Type:

Dissertation

Full Text:

watershed as a whole (Fig. 2.2). Each of these 135 sites was visited during the summers of 1993 or 1995