Laserfiche WebLink
<br />., <br /> <br />10 <br /> <br />. <br /> <br />9- Al'thoueh the proposed Verdigris Rl ver reservoir system has been <br />TeOOIDended to Congress~ its authorization has not been enacted into law. <br />The so-called Definite Project Reports have heen prepared and oompleted <br />for the Toronto and Fall River reservoirs. In other words, sufficient <br />investigations, surveys ani borings have been oompleted to determine upon <br />the type and general oharacteristics of dams to he oonstructed at these <br />sites, and revised estimates have been prepared. The Toronto Dam would <br />have a conservation pool oovering 2,000 acres of land, approxicately <br />),500 acres of land ~uld l1e below spillway orest, and 10,000 acres below <br />top of I;&t08. At the Fall River Oem, these figuras are approximately <br />3.300 acres, 5,000 aeres, and lO,LDo acres to top of gates. Both dams <br />would be of earth oonstruotion. No further investigations have been made <br />at the Elk and UoodQshA. si tee:. . <br /> <br />, <br /> <br />10. The capacity seleoted for the Toronto and Fall River Bites would <br />provide a capaoity 8JOOunting to 4.52 inches of run-ofr for the Toronto <br />site and 7.34 inches for the Fall River site. :J'18.t appears to be an ex- <br />cess oapaoity at Fall River yms provided beoause the reservoir site does <br />not oontrol the entire drainage area of Fall River, and the run-off from <br />this uncontrolled drainage area may make it advisable to completely stop <br />flood flows above the Fall River da~ site and release no flow during a <br />flood. The excess oapacity would mnke this possible, and in addition <br />would make possible a better regulation during the period falloTting a <br />flood. <br /> <br />D. Grand River <br /> <br />. <br /> <br />~ <br /> <br />1. The Grand River, kno\vn as the Heosho River in its upper reaches, <br />dr&ns an area of 12,660 square r~1es. It has n total length of 460 <br />miles. llajor floods on the Grand River are more frequent in the valley <br />above the mouth of Spring River, which joins the main river 131 miles <br />above its mouth, than on the lower river. This is because peak flood <br />dischar~es from the upper basin are reduced in magnitude by the large <br />artOunt of valley storage in Kansas. The channel below the mouth of <br />Sprin& River has a oapaoity of 80,000 cubic feet per second ~h1ch is <br />sUffioient to carry floods from the Kansas area without overflow, ex- <br />cept when the flood is aue;mented by a oonsiderable flow from Spring and. <br />~1k Rivers and other tributaries entering the nain river in Oklahoma. <br />The flood plain includes about 264.000 acres, of whioh only 41,000 aores <br />are in the valley below the Pensacola dam site. The Grand River, in ad- <br />dition to f1aodine;: extensive areaa in its Olm basin, is one of the prin- <br />oipal flood-produoing tributaries of the Arkansas River. and the oontrol <br />of its floods would be of benefit ~n the Arkansas and ~lssissippi Rivers. <br />The Gre.nd River contributed nearly one-quarter of the p"ak flolT and total <br />volume of the 1927 flood. It is estimated that the peak flow ,vas about <br />135.000 c.f.s. and its volume 1,500,000 acre-foet.. The peak disoharge <br />in the 1895 flood, the greatest of reoord, 'HaS 250,000 c.f.s. above the <br />Pensacola dam site, and the maxim'xc probable is estir~ted at 350.000 at <br />this site. <br /> <br />. <br /> <br />. <br /> <br />2. The Jlood. plain of tho ";'rkans8.8 River below the mouth of the <br />Grand oomprises about I,O!~,OOO acres, of which 313,000 are in the back- <br />water area of the ~ississippi River. Average flood lossos below the <br /> <br />2404 <br />