What should be done with dredge spoils? "This report discusses two clam beds that were inadvertently established by dredge spoils and suggests the type and magnitude of study I think is needed to determine the feasibility of creating new clam beds with dredge spoils." Includes maps of Yaquina Bay, and...
In 1960, the Army Corps of Engineers was planning to extend the jetties and to deepen the channel at Yaquina Bay. The Corps proposed to dump its dredging spoils in Sally's Bend, a highly productive part of the bay. In response to this request, in the summer of 1960, Fish...
In 1949, the Army Corps of Engineers dredged Coos Bay. “Despite objection of local residents, commercial clam diggers, and the Fish Commission” the Corps dumped dredging spoils on a commercially important clam bed, and destroyed much of it. “This year, with an earlier start and more data, it is hoped...
This report concerns the disposal of dredging spoil in the Rogue River estuary in 1948. Since there were few shellfish resources existing in the estuary at the time, Oregon Fish Commission biologists had no objection to make to the disposal of the dredged materials.
An area in Coos Bay was dredged to make room for a log boom. This terse 1953 report concerns a bulkhead constructed to hold the dredging spoil and the proposed new log boom.
Effects of 4-inch (10.16 cm) suction dredge mining on benthic macroinvertebrates in 3rd to 4th order streams were investigated in 1996 by evaluating four mining claim operations in Althouse Creek, Sucker Creek, and Taylor Creek in southwestern Oregon's Rogue River basin. The effects were site-specific. The study showed no significant...
Reports on an investigation of a proposal by the Evans Products Company of Coos Bay to construct a dike in the bay. Investigators found negligible quantities of the Eastern soft-shell clam, and therefore did not oppose the proposed dredging and construction. Includes a hand-drawn map and a survey report.
Introduction- “This Volume… contains information accumulated during an environmental assessment of the Yaquina Estuary region. This information is the basis for many statements contained in the companion volume.” Companion Volume: Volume I: Draft Environmental Impact Statement Operation and Maintenance of the Channels and Breakwaters in Yaquina Bay and River, Oregon...
Sediments from Yaquina Bay and the Yaquina River from the river mouth to river mile 14, and from Depoe Slough at river mile .25 and 1.5 were tested. While sediments near the river mouth were "extremely clean," and main-channel sediments were relatively clean, Depoe Slough sediments were more polluted. Alternatives...