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..=..~...c..~.....==z~.==.=...==~z..=~=.=...=.......~..._..~...-.._..._.._._..~_.._..........._..................................... SOUTH PLATTS RIVER BASIN Streamflow Forecasts - April 1. 2002 ...=.....~....=..=====~=====.====....~===...~==...z.=...=................=........===.======........=.cz...........z====c==z=.~z...=.= I <<...... Drier .......... Future Condltions Wetter ......:>:> I ' Forecast Point Forecast I ......._=...c.....__... Chance Of Exceedl.ng ................zcc==.= Period I 90," 70'" I 50' (Most Probable) I 30\ lOll; 30.Yr Avg. I (1000AF) (1000API I (lOOOAFJ (\ AVG.) I (1000AF) (1000AF) (IOOOAP) ..............................._....................................1.......................1..................................... Antero ReservOlr inflow APR-JUI.. 1.7 2.5 I 3.3 25 I 4.3 6.3 13.0 ... Spinney Mountain Reservoir inflow APR-JUL 9.8 12.9 I 15.6 39 I 18.8 25 40 Elevenmile Canyon Reservoir lnflow APR-JUL 3.7 10.8 I 15.6 38 I 20 28 41 Cheesman Lake inflow APR-JUL 19.7 24. I 28 32 I 32 40 89 South Platte River at South Platte APR-SEP 65 82 I 93 ...0 I 121 162 230 Bear Creek at Morrison APR-SEP 8.6 11.0 I 12.6 41 I 16.6 22 31 Clear Creek at Golden APR-SEP 47 59 I 68 51 I 85 110 134. St. Vrain Creek at Lyons APR-SEP 25 37 I ...5 5... I 53 65 84 Boulder Creek nr Orodell APR-SEP 17.0 24 I 29 55 I 34 41 53 South Boulder Creek nr Eldorado Spr1 APR-SEP 8.3 20 I 28 61 I 36 48 46 Blg Thompson River at mouth nr Drake APR-SEP ...1 57 I 68 58 I 79 95 117 Cache La POudre at Canyon Mouth M'R-SEP 81 119 I 145 53 I 19... 266 275 _._.....=.c..~...=......==........_~.=...._..=_..C.........=.~....~......._.c_c...~...........a=_.............=..==~==~~.........=.~==E.= I I .=====....=~=====.E1_=.====....a=.=====...EZ=..=Z=.=.z....~=.==~=======.=~======_==...~.__.._.._=...=_..=.=.=~_~__.=...=z===__~.~~=.=.= I I I Year Year Avg I Data Si tes Last Yr Average ........................................................................,...........................--------...................... ANTERO 20.0 20.0 20.0 15.9 I BIG THOMPSON BASIN 6 81 61 BARR LAKE 32.0 27.... 20.0 27.51 I BOULDER CREEK BASIN 5 63 50 BLACK HOLLOW 8.0 2.7 2.5 ....0 I CAOiE LA POllOR&: BASIN 7 87 6... BOYD LAKE 451.0 20.5 22.6 33.0 I CLEAR CRBEK BASIN ... 59 53 CACHE LA POVORE 10.0 1,1.2 7.7 8.6 I SAINT VRAIN BASIN 3 75 43 CARTER 108.9 107.5 105.0 100.9 I UPPER SOUTH PLATTE BASIN 16 50 46 CHAMBERS LAKE 9.0 1,1.0 3.0 3.3 I TOTAL SOlIT'H PLATTE BASIN]9 66 53 CHEESMAN 79.0 59.0 52.5 60.8 I CK)BB LAKE 31,1.0 6.B B.9 13.9 I ELEVEN MILE 97.B 99.6 99.7 96.4 I EMPIRE 38.0 33.7 33.7 31.8 I FO.s;SIL CREEK 12.0 9.9 9.0 7.9 I (!;ROSS 41.8 19.2 18.9 23.9 I HALLIGAN 6.4. 3.5 ....0 ....7 I HORSECREEK 16.0 14.5 14.7 13.9 I HORSETOOTH 149.7 26.5 39.0 119.1 I JACKSON 35.0 26.1 26.1 29.9 I JULESBURG 28.0 18.2 18.2 20.B I LAKE LOVELAND 14.0 10.3 9.3 9.0 I LONE TREE 9.0 8.7 8.8 7.2 I MARIANO 6.0 3.2 5.3 4.5 I MARSHALL 10.0 5.0 6.2 6.0 I MARSTON 13.0 7.6 12.1 13.3 I MILTON 24.0 21.2 20.8 18.3 I POINT OF ROCKS 70.0 68.2 70.9 68.8 I PREWln 33.0 21.2 24.6 25.0 I RIVERSIDE 63.1 55.6 55.6 58.2 I SPINNEY MOUNTAIN "'8.7 23.3 19.9 32.1 I STANDLEY 42.0 31.1 31.1 34.6 I JERRY LAKE 8.0 5.1 5.3 5.4 I u;.;ION 13.0 9.6 11.] 11.1 I WINDSOR 19.0 6.5 9.6 12.4 I SOUTH PLATTE RIVER BASIN Reservoir Storage (1000 AFI . End of March SOUTH PLATTE RIVER BASIN Watershed Snowpack Analysis - April 1. 2002 Reservoir Usable I Capacity I ..* Usable Storage This Last Watershed Number of This Year as \ of _.__.._~1~_....Z.~~=_..~..~=_~~_~~.=~_===.=C=~=..==_.=_~~=_=====~===_~1==...z======C=.Z_.E__C~==.==z===.~..============1__..========= . 90t. 70t. 30'. and lOt chanc@s of exceeding are the probabillties that the actual volume wlll exceed the volumes in the table. The average is computed for the 1971-2000 baBe period. (1) The values listed under the lOt and 90\ Chance of Exceeding are actually 5\ and 95," exceedance levels. (2) The value is natural volume - actual volume may be affected by upstream water management. ~