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Creator:: Pakenham, Anna
Abstract:: Anecdotal evidence suggests many Pacific Northwest estuaries are filling with sediment due to historical logging activities in upstream watersheds. Using the Siletz River estuary as a case study, this research began by analyzing timber harvest and discharge records of the Siletz River watershed, and found that increased timber harvest coincides...
Resource Type:: Masters Thesis
Full Text:: Patterns of Sediment Accumulation in the Siletz River Estuary, Oregon by Anna Pakenham A

Creator:: Rauw, Charles Irving
Abstract:: The Siletz Estuary was studied in 1973 to determine seasonal variations in tidal dynamics, water quality, and sediments. Tidal ranges and times were measured and compared to predicted values at two positions within the bay. Tidal ranges and times were analyzed to determine the dampening and phasing conditions within the...
Resource Type:: Masters Thesis
Full Text:: Quality, and Sediments in the Siletz Estuary by Charles Irving Rauw A THESIS submitted to Oregon

Creator:: McKenzie, David Roller
Abstract:: During 1973 data was collected to analyze the seasonal variations of the tidal dynamics, water quality and sediments of the Alsea Estuary. A summary of historical information with a list of all known alterations to the estuary was made. A complete physical description, including the geographical setting and mixing classification...
Resource Type:: Masters Thesis
Full Text:: Bulletin 81, Environmental Geology of Lincoln County, Oregon. The Alsea River Basin, which lies on the

Creator:: Glenn, Jerry L.
Abstract:: Late Quaternary sediments in the Willamette Valley, Oregon, include a unit of chiefly silt and fine sand, the Willamette Silt Formation. Previous workers have (1) Assigned the Willamette Silt different ages which range from Sangamon interglacial to late Wisconsin glacial, (2) Proposed that the Willamette Silt was deposited in a...
Resource Type:: Dissertation

Creator:: Iverson, Justin
Abstract:: The Willamette Silt is a surficial geologic unit composed of successive Missoula Flood Deposits that underlies 3100 km2 (1200 mil) of arable land in the Willamette Valley of Oregon. The Willamette Silt protects the underlying regionally important Willamette Aquifer from agricultural contamination while acting as a semi-confining unit and a...
Resource Type:: Masters Thesis
Full Text:: Pudding River, located approximately one mile SW of Mt. Angel, Oregon, agreed to allow the piezometer

Creator:: Hale, V. Cody
Abstract:: This dissertation integrates a process-based hydrological investigation with an ongoing paired-catchment study to better understand how forest harvest impacts catchment function at multiple scales. We do this by addressing fundamental questions related to the stocks, flows and transit times of water. Isotope tracers are used within a top-down catchment intercomparison...
Resource Type:: Dissertation
Full Text:: with permeable bedrock geology at the Drift Creek watershed in the Oregon Coast Range had longer

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