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<br />1 ' <br />, <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />..... <br />QO <br />~ <br />W <br /> <br /><"'ro.t1on of future :llmmCf!l:!l?nt 'lbjectiv€s), the i'ollo,l1n;; in.forr.lution <br />is nrcrJ~d: <br /> <br />TIl?rrl?scnt~tiv<- rr~ch <br /> <br />2 <br /> <br />1. Icnrr+,h of ~v0r~e pool ~nd average riffle in the re,resenta- <br />tive rl?ech being ~e~crib<-d. ~vcr~c di3tance between pools and riffles. <br /> <br />2. !sti~ated slope throu~hout the representative reach (stream <br />gr"-dient) . <br /> <br />;. Cross-seetion thr~ugh the averuge si~e pool, describing shape <br />at b~~-fu1l capacity in te~s of elementary geometric for~s (trape- <br />coid91, rectnngur~r, trianGUlar, parabolic, EtC.) Consider bank-full <br />to b~ reached ~hen discharge b~glno to overflow either bank. G1ve <br />estimated width and depth at bam~-tull capacity. <br /> <br />4. Cross-section throu['h o.verDC€ riffle, "escribing :;ho.pc nnd <br />eiving width nnd mllxi/llUm r'epth <:!-s in :he case of the t.vero.ge pool. <br /> <br />~. Cro~s-ocction (~€velo~ed in manner similo.r to ;. ~~d 4. <br />above) throuGh +'rnnci~ion reuch'bctwecn avernce ~ool "~d avcrcge <br />rlff1e. :sti!:lnte t'-vl'r::>..ge distonce betl1e,'n pool ond tr:msitlon cross- <br />sections and between transition :md riffle cross-s~ctions. <br /> <br />6. ~9timatcd ~,rc"nt~ of ctreamb,d in pools and that in rif- <br />flea throuchcut the length ot the rrrrcscntut1ve reach; the C~ of <br />these r:,reent~ea will be Ipsa, of course, than the totlU streambed <br />nres, ~ftf'n considerably less. <br /> <br />1. ~escription of t1nicnl substrate at e~ch cross-scct1on <br />in terms of silt, arund, GT::>.vel,oobblcs, s~all boulders, 1crbe bould- <br />,rs, or bl'd-rock. <~ere diffrrent types of cubstrnte occur along the <br />cross-section. ~3 is oftFn the onse, this should be indicated to oClUe <br />on the cross-aeetion sketches for 3., 4., and 5. obove. <br /> <br />-'C n.rf' lookIng to state ft shery bio:ogists to ,rovici,(> the <br />foregoing do.ta which, for this reeonno.1ssancc level inr!)act study, <br />will of necrosity be based u;,on their profescional jud~,nt b<:!-ck- <br />grounded l1Gainst :m inti::late knowll':<1ge of the otreams in question. <br />This infor~aticn ean be provided ~ny ti~€ it is ready; actuully, the <br />sooner, the better. The IPG should have this input e~ly in ~3rch. <br />The data ~ny be sent to me at the Alexandria, Virc1nia address at the <br />hend of this letter or they may be sent to the: <br />U .S.P1eh t'nd -1.ld1ife ~l'rvice <br />Offiee of 3iolo~cal ~erv1ceo <br />''''estem ""ncrgy (:.nd ,and L'oe 'l"cnm <br />Coopcr~tive Instre~ Plow ~e~!iess croup <br />Room 206. Pedernl ?uild1~g <br />~Ol ~outh Howes ~reet <br />?to Collins, Colorado 80521 <br /> <br />I vill attend t.he next mc~tin6 of the ~teer1ne Coomittec, <br />w1->1ch you indicated would be l'f?rly in ':o.rch, posdbly about the 3d. <br />~hereafter I she~l be available to meet with the state ~emb,rs in- <br />