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The required minimum reservoir release of 20 ft'/s for fish habitat was maintained throughout the October-January period. The February I snowpack water content was recorded at +4& percent of average, resulting in a April-July runoff forecast of255,989 acre-feet. February precipitation was aba,e a,erage ttt-f6+ percent of the 1966-1995 average. Inflow for February eontilrl:lea "ho.e a,erage at IJ5 percent. March I snowpack water content was +4& percent of average, which inere83.:d the April-July runoff forecast to 265,990 acre-feet. March precipitation was "de.. a(cragc at 87 percent, and inflow was H+ percent of average. April I snowpack water content was +59 percent of average, and the April-July runoff forecast mcre83ea to 289,890 acre-feet. Lake Granby storage on March 31 was 467,599 acre-feet which was 171,590 acre-feet below the 1966-1995 average. i\.IlYfla!lS release ill l!l(el!Sil sfthl! 29 ff/J fer fiJh l,abitM ..83 initillted MllI'eh II dftli the total bypass for March was 5;84;t acre-feet. Due 1:6 high f6rccB3tcal"l1ft6lf, the: byp~3 rcleftJ(. '"...83 initiated to ,,, fleliflIe 3tarage m Lal<<. Clanb) al1d reauee the elail:) JPiH "ehtnle3 cit1rill!; the. tical<: mfieff period in June. April was a tiIj' month as precipitation was 57! percent of average. The May I snowpack water content cllmintlCallbe.e a.clage lit 159 percent bitt the elr, April aeere.tlca the April-July runoff to 258,998 acre-feet. April inflow was -Hl4 percent of average. May precipitation eentim!ea bele.. a',cl'IIt': at 71 percent of the 1966-1995 average, although inflow was +6& percent of average aile te wellab<l. e a (Cl'llge tenlpelllttlfes. October-May precipitation was +H percent of average and the October-May inflow was +5+ percent of average. V/ith ne uater l'1:tt'ftpea iranl \Vi1l6n Cleek, lltiRtrm infltr.... en the riJC:, '-u.ttl a h)l'a33 rele83c ef 21,319 defe feet fer :.prilll\'lal ,997 aac feet fer May, storage on May 31 hilt! incrC83ed to 492,881 acre-feet. Lake Granby had on!) 43,390 acre-feet of storage remaining before the spillway radial gates would be required to be opened, Precipitation during June centinllea bele.. /Y. crll!le at 81 percent of average. Inflow was lIbe'\'e a. el'llgc lit 122 percent of the 1966-1995 average. Lake Granby storage centint!ed 1:6 rise fal'idly reaching a peak of 538,963 acre-feet by Jtme 19, or water surface elevation 8279.89 feet which was G:H feet below maximum operating level. Lake Granby is required to initiate a spill when the water surface elevation reaches 8279.50 feet. Natural inflow peaked on:hme ~ at t,949 ft'/s. Adams Tunnel diversions were near ms;ximtl!11 elll'lleit} during June as the east slope runoff and storage conditions allowed. Spillway releases were initiated on Jll11C 14 and the total spilled for June was 37,1 D acre-feet. The peak spillway release of3;fOO fills on Jl:ll1a 2: H~ tile:. m~le.Jt iMtfi.ftf8ne6li3 rcleltJe frOM Lalffi Crtt:nby 3ineti reeereb begm ill f949:. Precipitation was bela..' II.Cl'llg.: for July at 69 percent of average. Natural inflow was below average for July at ta percent. The total April-July runoff was 253,799 acre-feet, which was filename: CBT A0P98DFT 13 Preliminary Working Draft July 8. 1999