Alton J. Dupuy | Geology Reports

USGS1980

Analyses of water, core material, and elutriate samples collected near Sicily Island, Louisiana (Sicily Island area levee project)

Samples consisting of composited core material were collected from five areas by the U.S. Army Corps of Engineers and analyzed by the U.S. Geological Survey to provide data on the impact of proposed channel excavation and levee construction in the Sicily Island area, Louisiana. Samples of receiving water from the five areas, selected to represent the water that will contact the proposed dredged material of the levee fill material, also were collected. Chemical and physical analyses were performed on samples of core material and native water and on elutriate samples of specific core material-receiving water mixtures. The results of these analyses are presented without interpretation.

Louisiana↗

USGS1979

Analyses of native water, bottom material, and elutriate samples of southern Louisiana waterways, 1977-78

From March 1977 to July 1978 the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers conducted a series of elutriate studies to determine water quality in selected reaches of major navigable waterways of southern Louisiana. Samples were collected from the Mississippi River-Gulf Outlet area; Mississippi River, South Pass; Baptiste Collette Bayou; Tiger Pass area; Bayou Long; Bayou Barataria and Barataria Bay Waterway area; Barataria Bay Waterway area (gulf section); Bayou Segnette Waterway; Lake Pontchartrain near Tangipahoa River mouth; Bayou Grand Caillou; Bayou la Carpe at Houma; Houma Navigation Canal and Terrebonne Bay; Bayou Boeuf, Bayou Chene, and Bayou Black; Atchafalaya River channel, Atchafalaya Bay; Old River Lock tailbay; Red River below mouth of Black River; Freshwater Canal; Mermentau River and Lake Arthur; Mermentau River outlet; and Calcasieu Ship Channel. The studies were initiated at the request of the U.S. Army Corps of Engineers to evaluate possible environmental effects of proposed dredging activities in those waterways. The U.S. Army Corps of Engineers and the U.S. Geological Survey collected 189 samples of native water and 172 samples of bottom (bed) material from 163 different sites. A total of 117 elutriates (mixtures of native water and bottom material) were prepared. The native water and elutriate samples were analyzed for selected metals, pesticides, nutrients, organics, and physical constituents. Particle-size determinations were made on bottom-material samples.

Louisiana↗

USGS1978

Analyses of water, core material, and elutriate samples collected near Yazoo City, Mississippi (Yazoo Headwater Project)

Five core-material-sampling sites were chosen by the U.S. Army Corps of Engineers to represent areas of proposed dredging activity. Four receiving-water sites also were selected to represent the water that will contact the proposed dredged material. Chemical and physical analyses were performed upon core material and native-water samples from these sites as well as upon elutriate samples of specific sediment-receiving water systems. The results of these analyses are presented without interpretation.

Mississippi↗