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. . f..: . " q , LITTLE NEMAHA RIVER AND TRIBUTARIES' Study of the Little Nemaha River Project proposed by the Army Corps of Engineers resulted from a request by local residents. The Little Nemaha Val ley Levee District Number Three is sponsoring the proposed project. Current Status The Little Nemaha River Project has been authorized by Congress and endorsed by the Nebraska Soi I and Water Conservation Commission. Description of Project Area The Little Nanaha River Basin encompasses 885 square mi les of moderately hi Ily land. Annual precipitation averages 30 inches with a high of 57 inches recorded. The Little Nemaha Basin is primar! Iy an agricultural area devoted to grain crops and I ivestock raising. The wide ferti Ie flood plains of the main stem and larger tributaries are intensely cultivated. Recurring flood damage to croplands has caused serious economic loss to the area. Extent of Proiect Investiqations Flood control investigations were initiated in 1944 for both the Nemaha and Little Nemaha River Basins. Before a report of this investigation was submitted to the Congress, the flood of 1950 occurred. Since this flood was especially severe along the Little Nemaha River, sub- sequent studies were concentrated in this basin. In May of 1965, a report was submitted to the Committee on Public Works in the U. S. Congress. Plan Features This plan would include construction of levees and appurtenant works along the Little Nemaha River extending downstream from the vicinity of Brock to the existing Missouri River Levee. Tributary tieback levees would be bui It along the tributary streams of the lower basin and interior drainage would be released through the levees by gated conduits. This plan would protect the adjacent lands against floods that would occur on the average of once every 30 years. Proiect Benefits Direct project benefits would include the prevention of crop and other agricultural damages, damage to roads and rai Iroads, and damages to urban lands. Average annual damages along the Little Nemaha River would be reduced 74 percent. Remaininq Water Resource Problems and Needs Soi I erosion and stream pollution would remain after construction as resource problems in the area. Additional flood protection may also be needed. Proiect Costs The 1963 cost estimate for this project was $1,760,000. The federal share totaled $1,524,000 and the non-federal share, $236,000. Financinq Arranqements The structural costs would be assumed by the Federal Government with local interests furnishing rights-Of-way, relocations, and operating and maintenance costs. . "Little Nemaha River First Session, 1965. Omaha, Nebraska. and Tr i butari es, Nebraska!!, House Document No. 160, 89th Congress, For information, write: District Engineer, Army Corps of Engineers, 5-1