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...
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.
Hopper dredge disposal of coarse grained sediment was
investigated between May and September, 1986, at a designated disposal
area, Site G, in Coos Bay, Oregon. The objectives of the study were
to: (a) identify and describe the benthic macrofaunal community
structure at Site G during May and September, 1986; (b)...
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.
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...
Depoe Bay, situated on the Oregon Coast about 100 miles south of the mouth of the Columbia River and 13 miles north of Yaquina Bay at Newport, Oregon, is a small, rock-bound tidal lagoon much affected by man's activities.
In its natural condition, Depoe Bay was very shallow, with a...
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...
Tidal marshlands in the upper estuary ecotone provide essential habitat for
juvenile salmonids. In this environment, salmonids grow rapidly and acclimate to
saltwater. Worldwide, tidal marshes have been diked and drained to provide
agricultural and residential land. Tide gates are one-way doors integrated into
dike systems that prevent saltwater flooding...
The Army Corps of Engineers dredged in Coos Bay in the fall of 1948, dumping dredge spoils on a large clam bed and killing the clams. Although Fish Commission biologists were unable to relocate the original planned dumping site, they observed the resulting increased pressures on remaining clam resources, and...
The Port of Coos Bay is considering expanding their marina facilities in Charleston. Several sites are being considered; one to the north of the present boat basin and one to the south (Figure 1). The southern proposal is for an area that historically has supported an important recreational clam fishery....
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...
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...
Fossil foraminifers from the Coaledo and Bastendorff Formations
near Coos Bay in southwestern Oregon were studied in an attempt
to determine the age and environment of deposition. Fresh unweathered
samples were collected from sea cliffs between Cape
Arago and Charleston, Oregon.
A large late Eocene delta is preserved in the...
The need to preserve Oregon's estuaries has been expressed
through the Land Conservation and Development Commission's Estuarine
Resources Goal 16. The first use of the mitigation guideline set forth
in this goal is in the Coos Bay estuary. The proposed North Bend
Airport runway extension will fill 32 acres (13...
Authorizes extensions of the north and south jetties and maintenance dredging to improve the entrance to the harbor at Yaquina Bay. Describes past harbor improvements and expenditures and gives a brief description of the area and economic activities involving the harbor.
Yaquina Dock and Dredge Company had applied for a permit to construct a dike, bulkheads, a groin and to dredge at Sally's Bend in Yaquina Bay. The Fish Commission investigated to ascertain the effects of the work on natural resources. Includes a public notice from the Army Corps of Engineers.
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.
1. There is no evidence of a decline in the striped bass population of Coos Bay.
2. The striped bass, a species introduced to the West Coast of North America, has been important as a recreational and commercial fish in Coos Bay since the late 1920s. The catch has ranged...
Station data (weather, cloud cover, air temperature, salinity, water temperature, current velocity, tide stage and height, hydrogen sulphide and pH) are presented for eleven stations in and near Coos Bay. These data were collected over a three year period several times a day at approximately bi-weekly intervals.
Page 112 seems to have been skipped by the publisher in page numbering. No page is missing. Discusses dredging methods and possible options for disposing of dredging spoils from Yaquina Bay. Includes maps of river segments showing possible disposal sites.
The extent and mechanism of energy dissipation has been studied in Coos Bay, a coastal plain estuary. Coos Bay is located on the central Oregon coast, 184 nautical
miles south of Astoria, Oregon, and 35 nautical miles north of Cape Blanco. Past field work in Coos Bay and data obtained...
John H. Wampole's list of the birds of the Coos Bay area from 1958-59 is one of few such compilations from that region, and the only reasonably accessible one from its era except for Giesler (1952), which covered only the Cape Arago region. Wampole's list has been circulating informally as...
Temperature, salinity, and current measurements extending over one
or more tidal cycles were made at various times during the three-year
period 1960-1962 in Coos Bay, on the central Oregon coast (43°20'N,
124°13'W). Dissolved oxygen was measured occasionally. The three
regular sampling stations are shown in Figure 1. Station A is...
Gives an Oregon Fish Commission shellfish biologist's response to a request by the C.D. Johnson Lumber Company to dredge in Yaquina Bay. Hand-drawn map shows the proposed location for disposal of dredging spoils. Includes the public notice issued by the Army Corps of Engineers.
"Nine (9) sediment samples and 1 QC duplicate were collected from Yaquina Bay and South Beach Marina (see Figures 1) on May 31, 2000. All samples were submitted for physical analyses, with 4 samples analyzed for metals (9 inorganic), total organic carbon (TOC), pesticides/polychlorinated biphenyls (PCBs), phenols, phthalates, miscellaneous extractables,polynuclear...
Sediment along the western end of the Newport North Marina Jetty is free of contaminants such as metals, PAHs, pesticides, PCBs, phenols and TBT. According to guidelines developed to implement the CWA and MPRSA, the sediment is acceptable for both in-water and upland disposal.
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
Published March 1986. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the Sea Grant Catalog: http://seagrant.oregonstate.edu/publications
Loss of lowland estuarine and freshwater off-channel habitats along the Pacific Northwest coast has contributed to the decline of salmonid populations. These habitats serve as nursery grounds for juvenile salmonids providing them with food, winter shelter, and a transition zone between freshwater and saltwater. Lowland areas have undergone anthropogenic alterations...
"Seafood canneries in lower Yaquina Ray, Oregon process shrimp (Pandalus jordani), Dungeness crab (Cancer magister), a variety of bottom fish and several salmon species. The shrimp wastes are screened and discharged directly into the Ray beneath the cannery docks. During the shrimp processing season about 3.8 million liters of wastes...
When should the clamming season for horseneck, fat gaper, or horse clams (Tresus capax) be closed in Coos Bay? They are in "very poor condition" after spawning, and should not be harvested until they have a chance to recover from spawning season. But when do they spawn? Is Coos Bay...
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...
Seagrass ecosystems are considered some of the most productive coastal habitats in the world. One such seagrass within estuaries of the Pacific Northwest, Zostera marina (eelgrass), is recognized to be an ecosystem engineering species that provides many important ecosystem functions and services. In 2010, construction of the National Oceanic and...
Side-scan sonar records in Oregon's Coos Bay estuary navigation
channels were obtained at intervals of two to three months during the
November 1974 - October 1975 time period from Coos Bay Channel Mile
11+50 to 15+20, and from a reach in the Marshfield Channel. A limited
side-scan survey effort was...
Oregon's estuaries have been significantly altered by human activity, so that many former tidal wetlands no longer provide the functions, such as fish and wildlife habitat, erosion protection from storms, and water quality maintenance, that preserve the integrity of estuarine ecosystems. Oregon has been a leader in wetland protection and...