. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE 4Wfe BULLETIN No. 1067 A Contribution :rom the Bureau of Public Roads THOMAS H. MacDONALD, Chief. SU^^fU-u Washington, D. C. PROFESSIONAL PAPER. June, 1922 TESTS OF DRAINAGE PUMPING PLANTS IN THE SOUTHERN STATES. By W-. B. Gregory, Irrigation Engineer. Introduction Types of pumps Suction and discharge pipes CONTENTS. Page. | Page. 1 i Sources of power for pumping plants 5 2 I Tests of pumping plants 6 3 I Cost of operation of plants II INTRODUCTION. Agriculture in the southern po
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE 4Wfe BULLETIN No. 1067 A Contribution :rom the Bureau of Public Roads THOMAS H. MacDONALD, Chief. SU^^fU-u Washington, D. C. PROFESSIONAL PAPER. June, 1922 TESTS OF DRAINAGE PUMPING PLANTS IN THE SOUTHERN STATES. By W-. B. Gregory, Irrigation Engineer. Introduction Types of pumps Suction and discharge pipes CONTENTS. Page. | Page. 1 i Sources of power for pumping plants 5 2 I Tests of pumping plants 6 3 I Cost of operation of plants II INTRODUCTION. Agriculture in the southern portions of Louisiana was first prac- ticed along the rivers and bayous. Since the alluvial soil was de- posited by the rivers the highest land is found near the banks, and there is a gradual slope from the rivers and bayous back to the swamp. Previous to the last decade the only reclaimed agricul- tural lands in southern Louisiana were in the rear of the sugar plan- tation-. The early planters cultivated the narrow strip of land along the streams which could be drained by gravity. The width of these strips varied greatly, but usually the distance from the Levees back to the swamp was from one-half mile to 2 miles. The cultivation of sugar cane created a demand for more land, and this demand was met by extending the plantations toward the swamps, removing the water by means of pumps from lands too Low to drain by gravity. About 150,000 acres of agricultural lands in the State of Louisiana have been reclaimed or are al presenl in process of reclamation. The drainage of these agricultural lands and the drainage of the cit) of New Orleans, which was Largelj built in a swamp, have given a notable impetus to the development of pumps and pumping plants in this State. This development has been so rapid that it isnovt po sibie to find all types of drainage pumping plants in operation, from the old drainage wheel to the Latest design of screw pump. Both •-' 22 Bull. 1067 1 I. Please not
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