The wetlands of southern Louisiana and their drainage (1914) (14596654249)

Identifier: wetlandsofsouthe71okey (find matches)
Title: The wetlands of southern Louisiana and their drainage
Year: 1914 (1910s)
Authors: Okey, Charles W. (Charles William), 1886-
Subjects: Wetlands Louisiana Drainage Louisiana
Publisher: Washington, D.C. : U.S. Dept. of Agriculture
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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the units have been run continuously for a period DRAINAGE OF WET LANDS OF SOUTHERN LOUISIANA. 45 of 4 or 5 clays and were in good condition at the end of the run. This typeof plant seems to give the reliability that is necessary in a drainage plant. Itstheoretical capacity when operating at full load is 0.95 inch of depth in 24 hours. AREA NO. 6, NEAR POYDRAS, ST. BERNARD PARISH, LA. This district is part of a tract of 85.000 acres of land that lies to the southof the little town of Poydras, in St. Bernard Parish, being about 15 miles fromNew Orleans. The front boundary of the tract is for the most part the backline of the river-front plantations and the land extends back several miles.Most of the area is open grass-covered prairie, with only a narrow belt oftimber near the front line. As a whole it is almost at mean tide level, theaverage elevation being not far from 0.5 foot. The muck is close to 4 feetdeep and is not quite so turfy in character as is that in the vicinity of Race-
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Fig. 13.—Sketch plan and elevation of one unit in pumping plant on area No. 5, Des Alle- mands, La. land and Lockport. It seems to be the result of the decay of the usual growthof prairie grass, but has considerable silt mixed in with the decayed vegetablematter and lies on a subsoil of typical Mississippi River silt, of chocolate-brown color. Owing to the slight elevation of the land it is quite soft, since ithas never had a chance to drain and become solid. The front part is not cutup to any extent by bayous, although the tract includes a lake with an areaof nearly 5 square miles. The greatest problem to be solved in the reclamation of this tract is the pro-tection against storm tides. The maximum rise in tide at this point is between5 and 6 feet. This is higher than any on record for a period of about 100 yearsprevious to the storm of September, 1909, which.gave this maximum height. Area No. 6 contains 2,000 acres of open grass-covered prairie taken from theabove-described tract

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