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Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

Creator:

Stewart, Gregory B.

Abstract:

Dam removal is increasingly viewed as a river restoration tool because dams affect so many aspects of river hydrology, geomorphology, and ecology; but removal also has impacts. When a dam is removed, sediment accumulated over a dam’s lifetime may be transported downstream; and the timing, fate and consequences of this...

Resource Type:

Dissertation

Full Text:

. Abstract approved:___________________________________________________ Gordon E. Grant Dam removal is
Influence of hyporheic flow and geomorphology on temperature of a large, gravel-bed river, Clackamas River, Oregon, USA

Creator:

Burkholder, Barbara K.

Abstract:

The hyporheic zone influences the thermal regime of rivers, buffering temperature by storing and releasing heat over a range of timescales. We examined the relationship between hyporheic exchange and temperature along a 24-km reach of the lower Clackamas River, a large gravel-bed river in northwestern Oregon (median discharge = 75.7...

Resource Type:

Masters Thesis
Hydrology and geomorphic evolution of basaltic landscapes, High Cascades, Oregon

Creator:

Jefferson, Anne (Anne Jarvis)

Abstract:

The basaltic landscapes of the Oregon High Cascades form a natural laboratory for examining how geologic setting and history influence groundwater flowpaths, streamflow sensitivity to climate, and landscape evolution. In the High Cascades, highly permeable young basaltic lavas form extensive aquifers. These aquifers are the dominant sources of summer streamflow...

Resource Type:

Dissertation

Full Text:

: ____________________________________________________________ Gordon E. Grant Stephen T. Lancaster The basaltic