|
<br />70 3886
<br />
<br />MISSOURI RIVER BA~lN
<br />
<br />2. Arrangement oj report.-The report contains the following parts:
<br />
<br />MAIN BODY OF REPORT
<br />
<br />I. Introduction and general description.
<br />II. Floon characterist.ics.
<br />III. Flood problem.
<br />IV. Proposed tlood.control plan.
<br />V. Economic justification and discussion.
<br />VI. Cunclu....iu/J:'>.
<br />VII. Recommendations.
<br />
<br />APPENDIXES
<br />
<br />I. Maps and charts.'
<br />[II. Trallscript of public hea.rings.'
<br />
<br />3. Scope oj report.-In the preparation of this report, the "308"
<br />report 011 the Missouri River, House DoeumeIlt 2:18, Seventy-third
<br />Congress, aIld the report on the Missouri River from Sioux City,
<br />Iowa, to Kansas City, Mo., House Document 821, Seventy-sixth
<br />Congress. were reviewed. In addition, the following were also uti-
<br />lized: Other reports prepared by this Department, reports of ot.her
<br />ogel1cies, flood-damage investigations, hydrographic surveys, studies
<br />of aerial photographs of ti,e alluvial valley, special field investig"tions
<br />and compilation of known survey data and other information avail-
<br />able in the Department.
<br />4. Public hearings to determine the views and suggestions of locnl
<br />interests were held at Washington, Mo., on June 8, 1943; at Onawa,
<br />Iowa, on JIlne 9, 1943; at Nebraska City, Nebr., on June 10. 1943.
<br />Data for this report were prepared b.v the Kl1nsfls City and Omnha
<br />districts and correlated by the Missouri River division.
<br />5. Gencral description ~f the basin.-The Missouri River is formed
<br />hy the confluence of the Gallatin, Madison, and ,Tefferson Rivers at
<br />Three Forks, Mont., and flows generally east and south about 2,460
<br />miles to its conflIlence with the Mississippi River aboIlt 17 miles above
<br />St. Louis. The drainage area of the basin is 529,350 square miles,
<br />inc! uding 9,715 sq Ilarc miles in the Dominion of Canada. That por-
<br />Lion of the dra;nage area located within the United States includes all
<br />of the Stnte of Nebraska and portions of the StaLes of Montana,
<br />Wyoming, North Dakota, South Dakota, Minnesota, Colorado, Iowa,
<br />Kn.nsas, and 1\1is:3ouri.
<br />6. Most of the nrea within the Missouri River BllEin is gently rolling
<br />or plains country. The Ozark 1\10untains in Missouri, the Block Hills
<br />in SOIlth Dakota, and the Rocky Mountains which form the western
<br />houndarJ of the hasin are the principal mountainous areas in the basin.
<br />In the reaches of tbe Missouri River above Fort Benton, the river
<br />generally flows through narrow valleys and canyons with bonks com-
<br />posed of rock and gravel. BeLween :1<'01'1. Benton and Sioux City,
<br />Iown, the Missolll'i River flows through a vollev from I to 10 miles ia
<br />width, with ensily eroded hanks and an unstabie channel.
<br />7. General dcscriplion ~f basin below Siou2 Oity.-The drainage
<br />area of the Missouri River above Siom, City is 314,617 square miles,
<br />and below Siom: City it is 214;i33' square miles. Between Sioux
<br />City, Iowa, and the mOIlth, the principal tributaries are the Platte
<br />and Kansas Rivers, whose principal drailluge arcltS are, respectively,
<br />in Nebraska and Kansas, and tbe Grand, Osage, and Gasconade
<br />Rivers, whose principal drainage 8J:cas are in 11issouri.
<br />
<br />I Only pI. 16 i3 printed.
<br />I Not prirller1.
<br />
|