This report follows a two-part study made to investigate the hydraulic regime and physical nature of bottom sedimentation in the vicinity of the mouth of the Columbia River where disposal of large quantities of dredged material that has occurred over the last several decades.

This report documents the dredging practices, reclamation methods, and environmental effects of dredging in western Europe that were studied with emphasis on their relevance to the Dredge Material Research Program (DMRP).

This report follows a study on the productivity of seven marsh plant species in coastal marshes of Louisiana.

Appendix to a report on productivity containing an analysis of the above ground production of seven species of marsh plants as part of a study on the the feasibility of using dredged material as a substrate for marsh development.

Appendix to a report on productivity containing an analysis of the production of six common coastal Louisiana marsh plant species as determined by phenometric analysis as part of a study on the the feasibility of using dredged material as a substrate for marsh development.

Appendix to a report on the productivity detailing the productivity of a spartina marsh community as determiend by a gasometric analysis as part of a study on the the feasibility of using dredged material as a substrate for marsh development.

From preface: "This report presents a summary of studies conducted at Miller Sands Island, a tidal freshwater, dredged material disposal site in the Columbia River, Oregon. Studies were conducted from March 1975 to August 1977 to determine the feasibility of developing productive aquatic and terrestrial wildlife habitat on dredged material and to determine if development of wildlife habitat is a viable alternative to other dredged material disposal options."

Appendix containing physical, chemical and biological studies of conditions at Miller Sands Island to accompany a report of the Miller Sands Marsh and Upland Habitat Development Site, Columbia River, Oregon.

Appendix containing an inventory and assessment of predisposal and postdisposal aquatic habitats to accompany a report on habitat development field investigations of the Miller Sands Marsh and Upland Habitat Development Site in Oregon.

Appendix containing an inventory of prepropagation terrestrial resources at the Miller Sands Marsh and Upland Habitat Development Site in Oregon. It accompanies a report entitled, "Habitat Development Field Investigations, Miller Sands Marsh and Upland Habitat Development Site, Columbia River, Oregon; Summary Report".

Appendix containing the results of the propagation of vascular plants on dredged material in order to identify favorable plant materials for use in larger scale experiments to accompany a report on habitat development field investigations of the Miller Stands Marsh and Upland Habitat Development site in Oregon.

From abstract: The existing locks at Locks and Dam No. 1 were constructed between 1929 and 1932. Problems have been experienced with accumulation of ice and debris at the intakes, air entrapment in the culverts of the filling and emptying system, excessive turbulence in the lock chamber during filling, and hazardous conditions downstream from the locks during emptying operations.

From executive summary: "This report summarizes work done on the dynamics of the underground portion of some of the salt marsh plants along the Atlantic coast of the United States, the characterizations of soils in those plant stands, and experiments on the substrate selective properties of several of the plants."

Appendix A presents data tables recording the underground biomass for depth zones in stands of marsh plants.