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May 2003 ~S-- 7,$ 0" 098!j 3.0 Management Options and Consequences Management options that were evaluated included: ~fij~ ..-:--- POWER - Flows optimized for power production, without regard to impacts of diurnal fluctuation ;: MLFF - Continuation of current water operations and restrictions on flow variation TCD - Construction of temperature control device to warm the river, in conjunction with MLLF flow option ./ SED PIPE - Augmentation of sediment inputs at Lee's Ferry FLOW OPTION A - Steady flows in fall, with a January spike flow intended to conserve sediment FLOW OPTION B - Like OPTION A, but longer steady flow period (summer and fall) to benefit native fishes as well as conserve sediment FLOW OPTION C - Steady summer flow, fluctuating flow for rest of year (including fall), spike flow in January FLOW OPTION D - Like OPTION C, but bigger spike flow in January to deposit sand on eroding cultural sites TWG members reviewed and provided input on the preliminary management options. The draft consequence table was updated with input from TWG members (Table 2). It summarizes the estimated impacts of each option on each attribute. /1l-rF ;: ~ .4ck~ -7'c~ a €<?-3~~ /J~'.wJJ ,si.."J/ FI.'<!~,N'<-k.rol ~Jr"'1rl'/... ?~ /':1<>-?G/~ _ (5-~O,1CO --./ol<'_-f'r) p~ /J'J<>O<::/~ i ~/,I,g,r- ("i~ - I'1T 73 - ,.,.'r 00 - rn.r ,N'-P"Jf a kac7 t..S-IJ) (......., + r-;.// S-/~ F~I- i$ /li3~ F,..hal~ /' / tv> 15' II~ F /J ~r- /- F F ' BI-II3F t.<-_r,.,.J-.,.../,) r.....~ I- Ml-r,' -s.,. TC"P - /veJ /$'+- CO h,... ~ no ~/I.-s .,r .;r>.-r....., j'//~I., /C.-..............-.O-/ s",J f/>I't.k}- IJc--f.J. "-;r r__J,,-JI~ - (>1or-;r~ [-r.,..-6,).:r j,/,Js "FJ) GCDAMP MATA Pilot: May 2003 Workshop Report (r..,. . 3 /'cP;) (,;~~,"!:\ ==-- efY1~-"'O) -- 3