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<br />., <br /> <br />I} <br /> <br />. <br /> <br />ll1neral resources aTe abundant in the l't"8.tershed. The principal manu- <br />factures of the basin are allotted to agricultural, mining and domes- <br />tic supplies. <br /> <br />4. The annual rainfall increases quite uniformly from about 31 <br />inches in the upper 6ottou't"l'Ood River to about 45 inches in the Ozark <br />uplift seotion along the lower reaches ot the stream. Run-off is <br />generally rapid throughout the watershed and espeoially in the Flint <br />Hills and in the 0% ark area.. The average annual run-off is over 8 <br />inohes. No single stonn has produoed a reoord flood throughout the <br />length of the river, nor has a flood from the Kansas area alone ever <br />oaused a flood below the mouth of Sprint River. In the Neosho valley <br />above the mouth of Spring River there is an average ooourrenoe of 1 <br />major flood every 1 years, 1 moderate flood every 2 years and 1 minor <br />flood eaoh year. Below the mouth of Spring River there Is an average <br />of 1 major flood every 10 yo8.rs, 1 moderate flood every 4 years, and 1 <br />minor flood every 2 years. <br /> <br />, <br /> <br />5. The ohannel capaoity of the Cottomrood River near its mouth is <br />about 15,000 oubio feet per 3eoond. Bet'r:een the mouths of the CottoIn\'Ood <br />and Spring Rivers, the ohannel capacity is about 25,000 oubic feet per <br />seoond. It is about eo,ooo to 100 ,000 oubic feet per second below the <br />mouth of Spring iliver. <br /> <br />. <br /> <br />6. There are 265,000 acres in the flood plain of the Grand (Neosho) <br />River, 53,000 on the Cottonwood and 25,000 on Spring River, or a total of <br />343,000 nores. Of these, about 155,000 lie in the valley in Kansas below <br />the mouth of the Cottonwood River. The general desire of looal interest, <br />as expressed at public hearings held by the Department, is reduotion of <br />flood losses by the oonstruction of reservoirs, and storage of excess <br />waters to supply defioienoies of str~~ flow during dry periods. There <br />are excellent dam and reservoir s1 toe on the Cottonwood and upper Neosoo <br />Rivers, but the presence of utilities, railroads, highways. towns and <br />other improvements renders them very expend ve. <br /> <br />7. The survey report on the upper Grand River is now in course of <br />preparation. The report will not be oompleted for some months yet. The <br />preltminary investieationB which were made tt~ years ago oovered the <br />Uarion Reservoir on Cottonwood River. Cedar Creek Reservoir on Cedar <br />Creek, Elk Reservoir on lliddle Creek, Council Grove Reservoir on Neosho <br />River, and the Burlington Reservoir on the main stem. <br /> <br />F. 7~~ Worth Canadian River <br /> <br />. <br /> <br />. <br /> <br />1. The North Canadian River has its source in the high plateau <br />region of northeat New Uexico, flows eastward thrOUGh New LIexioo and <br />the Panhandle of Ok:lahoM, thence it flovrs in a southeast direction to <br />th.e vicinity of Oklaooma City, where it turns eastward to its oonfluence <br />with the South Canadian River near Eufaula, Okla, It has a drainage <br />area of 16,850 square miles, and a total length of 800 miles. The <br />watershed is very narro.... throughout )]lOst of its length, never exceeding <br />f:iJ mlles in width and averaginc less than 10 miles in the 200-mlle reach <br />froo. j'rolf Creek to Oklflhoma City. flo1f Creek, 1,660 square JIdles, and <br /> <br />~4(j.l. <br />