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<br />002092 <br /> <br />:,._-" ," ::'\."~.'~< . . <br />:.J.-:.:'" <br />;.:.:.,.:.-:.>.:,:~..: ~',... " ~ r <br /> <br />:-'.:!;';:;S <br /> <br />-':-. '),~;;.; <br /> <br />18 <br /> <br />Kansas State Board of Agriculture <br /> <br />',." <br /> <br />.... <br /> <br />debris and further restrict the channel. These conditions prevail <br />rather generally on streams in the basin and are factors in the <br />magnitude and frequency of occurrence of floods. <br />It is important to recognize and note the various phy"ical charac- <br />teristics of the basin, "ince they are a principal factor, in combination <br />with different hydrologic conditions, in creating the pressing prob- <br />lems of water use and control which now confront the area. <br /> <br />'," '.': <br /> <br />[;:'::~;~1.:;:~!'/1i~i;~!:(~~;<? <br /> <br />..' ;..-.... <br /> <br />",' <br /> <br />, .~. ," '. ,-- <br />..::" ..:::":~:'.;'. :",::.<. -: ..... <br />, .: " ". ..'" . '". ,'-" ..... ".;" <br />'.' .' . . .~. <br /> <br />THE PROBLEM <br /> <br />The water problems of the Neosho basin are brought about by the <br />extreme variations in the available water supply. On an average <br />there flows from the Neosho river basin each year about one and <br />one-half million acre-feet of water. While this volume is almost <br />one hundred times the combined maximum demand of all the mu- <br />nicipalities now using the river as a source of supply, there are times <br />when these same municipalities suffer severely from lack of avail- <br />able water. <br />A continuous record of the daily discharge of the Neosho river <br />near Parsons has been kept since October 18, 1921. These data, <br />for the years 1922 to 1941, inclusive, have been plotted in a hydro- <br />~raph shown in Figure 2. The vertical scale of the hydrograph is <br />composed of three intervals in which all values between 0 and 100 <br />are plotted to one scale in the lower interval, values between 100 <br />and 1,000 are plotted to another scale in the middle interval, and <br />,'alues between 1,000 and 50,000 are plotted to a third scale in the <br />upper interval. <br /> <br />.'-". ." <br />:':".::..:. ;...,.... <br />:. . . . ;". ;., :. :.- ".~. .:.: . . <br />.... '," <br /> <br />~" _.', ," :.:". :":' . <br /> <br />..... "-':","::'...:1 <br /> <br />- . ~ .... ," '. <br />...... <br /> <br />..:....:.-..;.. <br /> <br />Fluctuations in River Flow <br /> <br />The range in average daily discharge for the period varies from <br />zero, which occurred for considerable periods of time in 1934, 1936 <br />and 1939, to a maximum of 47,400 cubic feet per second on Novem- <br />ber 24, 1928. The periods of time when the discharge is less than 100 <br />"econd feet are shown in red and those when the discharge exceeds <br />15,000 second feet are shown in blue. It is as a result of such <br />periods that the principal problems of control and use of water begin <br />to arise. <br />In the two decades represented on the hydro graph there is not a <br />single year in which some of these conditions did not occur. In <br />1924 and 1925 conditions along the river remained quite satisfactory. <br />The years 1922 and 1923 and the period from 1926 to 1929, inclu- <br />"ive, are characterized by floods. With the exception of 1935, 1938 <br />and 1941, which are n]so years in which large floods occurred, the <br />remainder of the time included long periods of extremely low flow. <br /> <br />~'" ":':\~:"<"'~~~.,,~,'.:...,..:.\ '_:.:~~.. ",' , <br />,'. ".r ." <br />. ,".' _._.: ..,~-t~~/.:. ..~..: " "..:" ,"' .;. <br />,.- ....,.. ",.::. <br />",w'. _ <br /> <br />,.- <br /> <br />. ~.' <br /> <br />"-.' .~ ',", <br />