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<br />I . <br /> <br />. <br /> <br />. <br /> <br />So long as there is a variety oi' needs or problems and more <br />than one individual or gronp involved, coordination becoll!es a factor <br />in consideration of any hydrologic problem, Obviously, when the human <br />element is eomidereG, coordiTld,tlon to the full literal extent Dn such <br />a field of universal interest as hydrology is a most difficult and com- <br />plex matter. Even thou~h action amongst the various interests could be <br />obtained, the present status and historical development of policy, <br />criteria and procedures imposes major problems of an administrative and <br />engineering character in hydrologic coordination, <br /> <br />Lacking a central and single organi~ation responsible for the <br />objective evaluation of the hydrologic problems and the development of <br />a plan and works to resolve these problems, the science of hydrologic <br />analysis has grown from many sources and has been based on reaching <br />solutions for a variety of problems, As a result, hydrologic coordina- <br />tion has also been somewhat haphazard and came about largely by a common <br />need for reaching solutions to the problems and the obvious fact that a <br />variety of interests in a watershed must be served, Although hydrologic <br />coordination has advanced to a large extent, narticularly in recent <br />years, the physicel framework of our activities and interests has not <br />allowed it to reach the stage where it could be said that there is en- <br />tirely common action in any watershed. <br /> <br />I. HYDROLOGIC C-:ORDINATION RF.QlI m1'n - 2ACTS AND ANALYSES THEREOF <br /> <br />The areas of hydrologic coordination .Ibid, Hould involve <br />Federal, State and lesser political entities as well as individuals in <br />any particular watershed would include all ph3ses of the determination <br />of the water resources and the magnitude and frequency of floods, as well <br />as to determine the effects of various works to develop and control the <br />runoff. Particular phases of hydrologic analysis and discussions thereof <br />which would require coordination (itcms "a" and "b" of the assignment) <br />in order to obtain comprehensive planning and development of a watershed <br />include but are not limited to the follOlling: <br /> <br />a. Collectiol} of and agroement on factunl data by watersheds with <br />!espect to the physical factors which affect the r~,te! amount and quality <br />of runoff. <br /> <br />This item is r"th~r br0ad <"nd, to " ccrtain ext~nt, overlaps <br />othar items of required coordinati.on diGcussed sc,D!1r:<tp.ly b,?low. In <br />gonsral, this ncrticular ib,n l'ct':rs to baGic cnalYGes of streamflow <br />and rainfall records ami other b!lBic hydrologic' dat'l. Physic8,1 factors <br />affecting runoff include bQsin and sub-b'lsin dr~in~ge areas, stre~~ <br />chnnnel cro~s sections, streaJn profiles, Gte. Factors affecting quality <br />of runoff might includG de tc',r;ninHtion of n'ltu:r8 all~ 'lrtificial sources <br />of pollution, sediment sourCG ~reas, ete, 1'his item Ims not controversi'll <br /> <br />- " - <br />