the existing project consists chiefly of the construction of additional dikes and revetment. Rulo to Omaha, Nebr.-Commercial navigation has existed in this section since May 1939. The channel was practically completed except for the construction of several isolated revetments to permanently stabilize the designed alinement. At reasonable stages of the river during the navigation season, a channel with a minimum depth of 6 feet and a minimum width of 200 feet exists throughout this section except for a few crossings. The practical draft at ordinary stages of the river is 512 feet. Omaha, Nebr., to Sioux City, Iowa.-The high-water periods of 1942 set up the channel to the desired shape with the majority of the concave alinement virtually coinciding with the designed curvature. Because of the curtailment of new work, stabilization of the obtained project objective was unattainable. Subsequent high waters have accelerated the destructive erosion of unprotected concave banks, flanked and destroyed many existing installations, and have resulted in complete loss of alinement control in some sites with progressive loss of alinement threatened at additional sites through natural actions of an uncontrolled river reverting to its wild state. There now exists depths up to 52 feet during periods of high water but the controlling practical draft at ordinary navigable discharge is limited to 4 feet but with some sections at times limited to 32 feet. Under the existing project for systematic work on the 6-foot channel, the work accomplished includes 900,043 linear feet of revetment for permanently fixing the banks, 2,120,968 linear feet of pile dikes, 9,407 linear feet of rock dikes, 143,884 linear feet of ahatis, 2,287 linear feet of jetties, recrowning 700 linear feet of an existing levee, 19,218 linear feet of retards for stabilization of channel widths, construction of five impermeable structures to close off auxiliary channels, construction of 48,237 linear feet of asphalt revetment, effecting three channel cut-offs and removal of 69,548,173 cubic yards of material dredged from the channel to obtain project depth and width. The total cost and expenditures on work under the existing project to June 30, 1945, is: Proposed operations.-The unexpended balance of $4,488,412.62 of regular funds, accounts receivable of $55,794.92, and advances for plant of $350 000. at the end of the fiscal year 1945, together with an expected allotment will be applied during the fiscal year 1946, as follows: 672607-46-pt. 1, vol. 2-11 The additional sum of $6,300,000 can be profitably expended during the fiscal year 1947, as follows: Cost and financial summary Cost of new work to June 30, 1945. 1 $85, 915, 172.53 28, 595, 909.67 Total cost of permanent work to June 30, 1945– Undistributed costs June 30, 1945- Net total cost to June 30, 1945 Plus accounts receivable June 30, 1945-- Gross total costs to June 30, 1945. Minus accounts payable June 30, 1945. Net total expenditures.. Unexpended balance June 30, 1945. Total amount appropriated to June 30, 1945 94, 511, 082. 20 350,000.00 94, 861, 082. 20 55, 794.92 94, 916, 877. 12 59, 897.79 94, 856, 979.3 4, 488, 412. 62 99, 345, 391.95 Amount (estimated) required to be appropriated for completion of existing project 3– 3 Amount that can be profitably expended in fiscal year end 4,372, 318. 84 16, 400, 000, 00 3, 500, 000, 00 2, 800, 000, 00 6, 300,000.00 1 Includes $29,038,236.29 N.I.R.A. and P.W.A. funds, $9,613,073.19 Emergency Relief funds, and $134,385.25 M. & O. funds. 2 Includes $114,180.14 N.I.R.A. funds and $56,644.65 Emergency Relief funds. 3 Exclusive of available funds. 2. MISSOURI RIVER, SIOUX CITY, IOWA, TO FORT BENTON, MONT. Location. See page 1374. Through this section the river flows across the States of Montana, North Dakota, and South Dakota, forming the northeastern boundary of Nebraska. Previous projects.-Projects were adopted and modified by river and harbor acts as follows: August 14, 1876, above the mouth of the Yellowstone; June 18, 1878, Sioux City; March 3, 1879, Vermilion; and August 2, 1882, Sioux City to Fort Benton. Modifications of September 19, 1890, and August 18, 1894, extended the improvement to Great Falls, then to Stubbs Ferry, Mont. (For further details see p. 1108 of Annual Report for 1927, p. 1894 of Annual Report for 1915, and p. 1184 of Annual Report for 1938.) Existing project. This provides for the expenditure of from $75,000 to $150,000 yearly during the first 5 years of the project in the removal of snags and rocks from the channel and in bank protection at various locations between Sioux City, Iowa, and Fort Benton, Mont. Since the expiration of the 5-year limit, funds have been expended for snagging and maintenance of structures. The length of section included in the projects is 1,441.4 miles and consists of two parts: Sioux City, Iowa, to Fort Peck Dam, Mont. (mile 1868.7), and Fort Peck Dam to Fort Benton, Mont. At Sioux City the ordinary fluctuation is about 10.4 feet, and the extreme fluctuation (freshet of 1892 from Floyd River) is about 25 feet. At Fort Benton the ordinary fluctuation is about 7.3 feet, and the extreme fluctuation about 19 feet. The existing project was adopted by the River and Harbor Act of July 25, 1912 (H. Doc. No. 91, 62d Cong., 1st sess.). The latest published map is in the project document. Local cooperation.-See Annual Report for fiscal year 1942 (p. 1106). Terminal facilities.-The facilities are considered adequate for existing commerce. Operations and results during fiscal year.-Maintenance work was accomplished during the year at a cost of $2,343.59. The expenditures during the fiscal year were $2,261.92. Condition at end of fiscal year.-As cutting of the bank is less marked above Sioux City and is of little moment above the mouth. of the Yellowstone River, demand for bank protection work is not so urgent as on the lower Missouri River. In 1878, rock dams and dikes were built between Fort Benton and Carroll, Mont., to concentrate the meager low-water flow, and the rapids were cleared of rocks and boulders but, lacking maintenance, the river has reverted for the most part to the previous state. Limited appropriations hold Government expenditures to meritorious cooperative projects, and a small amount of repair to existing works. From April to October, inclusive, drafts of 30 inches are practicable to Pierre, 26 inches to the Yellowstone River, and 18 inches to the Fort Peck Dam. Depths which will accommodate large hoats are available on the Fort Peck Reservoir and drafts of 22 inches are practicable from the reservoir to Fort Benton. |