Understanding and interpreting seabed drifter (SBD) data /

At head of title: "Dredging Research Program."

Correlating seabed drifter weights to sand threshold conditions in wave and wave/current environments /

"December 1994."

Sublethal effects of suspended sediments on estuarine fish /

The objective of this study was to determine the effects, if any, of sublethal concentrations of suspended materials on the fish in estuarine systems. Experimental sediment suspensions reproduced the concentrations frequently found during flooding and at dredging sites and dredged-material disposal sites. The suspensions were of natural sediment, obtained from the Patuxent River estuary, Maryland, or commercially available Fuller's earth. Fish were collected in the Patuxent River estuary and transported to the laboratory. The selected fish species inhabited ecologically different sections of the estuary; therefore, the overall reactions of each species were unique. Seven species of estuarine fish were exposed to Fuller's earth and natural sediment suspensions for timed periods and hematological changes were noted. The effects of various concentrations of Fuller's earth suspensions on white perch gill tissue were determined. Oxygen consumption rates of striped bass, white perch, and toadfish were measured in filtered Patuxent River water and compared to consumption rates in filtered river water suspensions of Fuller's earth or Patuxent River sediment. Fish showed signs of stress in response to suspended sediments in most of the experiments. Results indicate that sublethal concentrations of suspended solids can affect estuarine fish.

Propagation of Spartina alterniflora for substrate stabilization and salt marsh development /

"August 1974."

Reports on the scientific results of the expedition to the tropical Pacific by the U.S. Fish commission steamer "Albatross," from August, 1899, to March, 1900. I. Preliminary report and list of stations.

Mode of access: Internet.

Hydraulic investigation for the construction of artificial islands in Peoria Lake : final report /

Prepared for Illinois Dept. of Energy and Natural Resources, Energy and Environmental Affairs Division.

Update : New Jersey Zinc/Mobil Chemical Superfund Site, DePue, Illinois = U ltimos acontecimientos : Sitio Superfund New Jersey Zinc/Mobil Chemical, Depue, Illinois.

The potentially responsible parties (PRPs) have removed the beaver dams and have collected the sediment samples they need for treatability studies. The treatability studies will establish the correct silt fence to minimize releases of sediment during the actual dredging to occur this fall. The studies will also determine the types and amounts of materials (lime, kiln dust, fly ash, etc.) required to stabilize the sediment, chemically tie up the metals and insure the sediment mixture will bear the weight of the cap on the Interim Storage Cell where the sediment will be placed. The Illinois Environmental Protection Agency (Illinois EPA) anticipates work to be completed by late fall or early winter 2004, if lake and river levels that affect the South Ditch are at their normal seasonal levels.

Water resource projects in Louisiana : hearing before the Subcommittee on Water Resources of the Committee on Environment and Public Works, United States Senate, Ninety-eighth Congress, first session, on the Atchafalaya Basin floodway system and the Mississippi River deep draft ship channel, August 12, 1983, New Orleans, La.

Mode of access: Internet.

Steam shovel and dredge.

Description based on: Vol. 16, no. 1 (Jan. 1912).