Browsing Technical Reports (Water Resources) by Subject "Dredging"
Now showing items 1-3 of 3
Biological Survey Buffalo River and Outer Harbor of Buffalo, N.Y.The shoreline of the Buffalo River is developed with heavy industry such as Republic Steel, Allied Chemical, Mobil Oil and numerous grain elevators. Similarly, on southeast shore o f the Outer Harbor, heavy industry such as Bethlehem Steel, Huron Cement and Lackawanna Steel is evident. On the eastern shore o f the Outer Harbor, freighters unload salt, taconite, coal, etc. into large storage piles for later use by the area industries. Large lake-going freighters and oilers routinely use the previously dredged channel existing along the entire length of the study area (Fig. 1) while servicing the industries located along the water front. The U. S. Army Corps of Engineers is considering the feasibility of dredging the Outer Harbor and Buffalo River channels deeper to accommodate deeper draft vessels and/or to construct alternative means of transshipment of raw materials. An intensive study of the Buffalo River, Ship Canal and Outer Harbor of Buffalo, New was undertaken between April 1981 and May 1982 with the following general objectives: (1) To evaluate existing conditions in the river and harbor and to evaluate the biological impact of dredging the channel deeper in the Buffalo River and Outer Harbor; (2) To evaluate the biological impact of alternative proposals to dredging such as transshipment of raw materials by conveyor; (3) To evaluate the biological impact of removal of debris, old pilings, etc. along the Buffalo shoreline; (4) To evaluate existing conditions in potential disposal areas (Fig. 2) and to evaluate the biological impact of spoil disposal in these areas; and (5) To provide a functional assessment of the ecological components studied and evaluate their significance with and without project implementation to the area ecosystem. In Volume 1, the Final Report, our analysis and interpretation of existing conditions and our assessment of impacts are presented. In Volume 2, the Data Report, the raw field data is presented in tabular form.
Final Report: Aquatic Biological Survey, Cape Vincent HarborThis report evaluates the potential environmental impact of proposed maintenance dredging at Cape Vincent Harbor, New York, by the u.s. Army Corps of Engineers. Field samples were obtained in autumn 1978 and spring and summer 1979. Data reports based on these sampling efforts were submitted earlier to the Buffalo District of the U,.!S. Army Corps of Engineers. In this report, the impact of dredging at Cape Vincent Harbor is considered in relation to physical and chemical conditions, terrestrial vegetation/wetlands, aquatic macrophytes, macrobenthos, phytoplankton and zooplankton, fish, birds, endangered species and toxic chemicals. For each factor considered, sections entitled Existing Conditions are followed by our Assessment of Impact. The last section presents our conclusions and recommendations concerning the general impact of dredging on the Cape Vincent – St. Lawrence ecosystem.
Food Habits of Irondequoit Bay FishThis report presents an evaluation of the potential impact of dredging a navigation channel connecting Irondequoit Bay and Lake Ontario on the fish populations of the area, based on a study of the food habits of the fish. Most fish are largely opportunistic feeders, subsisting largely on the most readily available and abundant food organisms. Yet there may be great differences in the food habits of species or fish inhabiting any given region. These differences result from differences in physical adaptations of a species, the size of the fish, and the particular habitat occupied, Species of fish of differing food habits may respond quite differently to the proposed dredging operations as the result of differing effects on the food organisms. The information in this report supplements that of our previous report concerning the potential environmental impact of the Irondequoit Bay dredging project (Ellis, Haines and Makarewicz, 1976).