Laserfiche WebLink
<br />. <br /> <br />. <br /> <br />anticipati~g changes resulting from present and/or related orojects and <br />progrems. For coxanpb, a nro.i3et d.,s.ignod to utilize a c2rtain quantity <br />of water derived on the br.sis of historic r.,cord will not re;;lize the <br />anticipated benefits if anotl~r project is constructed to utilize all or <br />nert of the sam2 water. LilmwisG, a oroject designed to control a <br />c'3rtain magnitude of flood will not be fully utilized if a future up- <br />stream proj8ct r'3duces the anticipated flood, or if a downstream project <br />is constructed to protect an aroa which Rlready recoives protection <br />from an upstream project, This item occasioned considoreblG controvGrsy <br />during the c'mrsc of the AWR studies and specio.l efforts W,3re made to <br />arrive at solutions thereto, Satisfactory accomplishment of this item <br />can be achieved only after other basic hydrolo~ic probloms have been <br />resolved. <br /> <br />i, Establish a uniform ap~roach to ths analysis, effect, and control <br />of sedimentation. <br /> <br />Tho problems of sedimentation playa vital role in the com- <br />prehansive pl~nning for a watarshed, Th2 d2trimcntal 2ffects of <br />sodimentation ranga from the washing away of topsoil from the watersheds <br />to th3 forming of tidal d:,ltIlS at tho mouths of m~jor tributaries, The <br />probloms include the siltino:; up of r'20ervoirs, rbstruction of fertile <br />farm lands by deposits of sand and gr~vel durin~ floods, deterioration <br />of stream ch~nncls and maintenance prOblems on navigation projects. <br />Methods of s~diment ~nalysis and control vary widely among tho many <br />agencies e_nd intensts cooc;:ornod wi th the "?roblomo rc,sul ting in little <br />coordinated action Mlon,C: them, althou;::;h most of the uncoordinated <br />actions probably rer,ct to the common sood, It ic; t>,~l i.2v~d that through <br />coordination, expcnditur2s now bEeing made on tlri s problem would result <br />in greater benefit. <br /> <br />j, Establish a uniform approach to th'3 analysis, dL;ct, "-nd control <br />of tho chemical and physical qualities of water. <br /> <br />Water quality in many areas is b2ing impaired through discharge <br />of industrial and domestic wastes and as a r8sult of unwise land use, <br />as w2l1 as from natural cnuses. Th8se conditions r2sult in increas~d <br />dissolved mineral or bio-chemical content or changed physical <br />properti8s which ~r8 all recognized ac Dollution. Ag~ncies whOSe <br />programs relp.te to wat::r and land use recognize th8 desirability of <br />maintaining and improving, where possib10, thG natrual quality of <br />stroamflow e~d ground watar. How3vcr, in 80m3 ~re~s thGrc is not suf- <br />ficient authority or a r3luctancG to 0xerci8c that authority for <br />economic r8nsons. It should be recognizod th"t it m,~y not be oconom- <br />ically fJilsiblc or o3sir3b12 after using water incustrictlly or for <br />municip~l or irrigation purC'oscs to r "starG the efflu:mt wntGrs to <br />their pre-Civersion quality. <br /> <br />Much water qu~lity d2ta 8ro collc~ted n~tion-\,-,dB 810ng with <br />othe:r stre2,mflow drcta by the U. S. G,:olo'cical Survey. OthGr miscd- <br />laneous organizations clso hEVG Gath~r2d information concorning the <br /> <br />- 6 - <br />