|
<br />:i.'._,
<br />:'."..
<br />
<br />r.*',"
<br />
<br />Missouri River Basin
<br />Comprehensive Framevork Studies
<br />
<br />$. ~
<br />>:0<0,;;
<br />. ,
<br />
<br />'Y-.
<br />
<br />Hydrology.
<br />
<br /><-,
<br />^
<br />'.',
<br />
<br />Of major significance to the Comprehensive Frame~ork St~ and to
<br />the Missouri Basin is the availability of adequate vater of satisfec~ory
<br />quality. Historically, man has used the waters of the Missouri Basin
<br />since he first arrived bere, and its availability has patterned, at least
<br />in part, his economic successes and failures and his way of life.
<br />
<br />'....
<br />
<br />-0-'
<br />~- '-
<br />
<br />The Missouri Basin has a variable climate with seasonal temperatures
<br />ranging from _600 to over 1200, Yith belo.... zero to over 1000 temperatures
<br />experienced over much of the Basin. Average annual precipitation varies
<br />from 8 . 12 inches in the northvestern plains and 20 - 40 inches in the
<br />mountains, to about 44 inches in the southeastern part of the Basin. Aver-
<br />age rainfall amounts to slightly over 20 inches.
<br />
<br />',.-
<br />.':.
<br />
<br />-'.'
<br />
<br />:'.'"
<br />.. ....
<br />
<br />'".'
<br />"'.
<br />
<br />....
<br />
<br />,.,
<br />~-
<br />
<br />'-';":
<br />
<br />
<br />~v. ,
<br />>"<~'"
<br />,<,t .
<br />.~,\,
<br />f.'$--', ,
<br />''''f-
<br />
<br />~--'.,
<br />/.-':;...
<br />
<br />.
<br />
<br />,
<br />".
<br />
<br />-./'
<br />, .
<br />
<br />;" .-
<br />
<br />....'
<br />
<br />,.,
<br />'(;.,-.",
<br />....;,.,
<br />~"'" ,,,',-,
<br />"'.'-','
<br />-. f'l "'I
<br />(<
<br />,.
<br />,
<br />':=..:
<br />..<, .
<br />
<br />,
<br />,
<br />'.'
<br />
<br />"''';'-4-'~'
<br />
<br />Streamflo....s are made up of tvo principal parts, that of d.1rect sur-
<br />face runoff during major precipitation and snowmelt periods, and from
<br />vater which passes through the soil mantle. The amount of runoff 1n the
<br />Missouri Basin is approximately 10 percent of the average precipitation
<br />and amounts to an average for the Missouri Basin of 2.3 inches. This
<br />varies from a high of over 12 inches In the mountains and southeastern
<br />pert of the Basin to less than 1/2 inch in major portions of the plains.
<br />
<br />.T<.:
<br />f".-'--
<br />"<:':\:-'
<br />~1',~
<br />.""":;'"
<br />-....,(
<br />,--.i:,",;
<br />
<br />*Presentetion of this 8~bject by E. W. McClendon, Corps of Engineers,
<br />Chairman of Work Group on Hydrologic Projections.
<br />
<br />15
<br />
<br />~ ~-
<br />
<br />'>" ~:'::,.'/:;;~>:,I'-'"';;~')l;:.._
<br />-~, ,
<br />,
<br />
<br />..~ .- ,,- .
<br />
<br />-.. ..........
<br />
<br />'..
<br />
<br />,
<br />
<br />,.
<br />
<br />,
<br />
<br />'.
<br />
<br /><. ..;
<br />
<br />r ',-
<br />
<br />,
<br />
<br />;"\";
<br />
<br />-'" '
<br />..
<br />'..,'.
<br />
<br />r-
<br />
<br />.~
<br />
<br />,; ,'.
<br />""J-'!:,i;;..jIo.- -
<br />
<br />,'"<-~
<br />
|