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<br />~--~~~~:=-=~~=-:=~~===~-=~-=============~===================~~~~~=============:==================================~================
<br />
<br />SOUTH PLATTE RIVER BASIN
<br />Streamflow Forecasts - February 1, 2000
<br />
<br />Forecast Point
<br />
<br />-==~==~=:=============-==~=====~~======~~============~~===:========================================~~===:======~==================
<br />
<br />Wetter =====>>
<br />
<br />Forecast
<br />Period
<br />
<br /><<~===~= Dr1er ====== Future Conditions
<br />
<br />90%
<br />(1000AF)
<br />
<br />70%
<br />(lOOOAF)
<br />
<br />Chance of Exceeding
<br />50% (Most Probable)
<br />(IOOOAF) (% AVG.)
<br />
<br />JO'
<br />(1000AF)
<br />
<br />30-Yr Avg.
<br />(lOOOAP)
<br />
<br />==~====~===--------===~~-=======~==~==-=:~=============~============ ===============~=~===== =============~=====:~~==========~::==
<br />
<br />10.
<br />( 1000AF)
<br />
<br />Antero ReserVOlr inflow
<br />Spinney Mounta1n Reservoir inflow
<br />E1evenmile Canyon Reservoir inflow
<br />Cheesman Lake 1nflow
<br />South platte R1ver at South Platte
<br />Bear Creek at Harrison
<br />Clear Creek at Golden
<br />St. Vrain Creek at Lyons
<br />Boulder Creek nr Orodell
<br />South Boulder Creek nr Eldorado Spri
<br />819 Thompson River at mouth nr Drake
<br />Cache La poudre at Canyon Mouth .
<br />
<br />APR-JUL
<br />APR-JUL
<br />APR-JUL
<br />APR-JUL
<br />APR-SEP
<br />APR-SEP
<br />APR-SEP
<br />APR-SEP
<br />APR-SEP
<br />APR-SEP
<br />APR-SEP
<br />APR-SEP
<br />
<br />J,'
<br />17 .4
<br />13. ]
<br />4l
<br />ao
<br />11.6
<br />7]
<br />"
<br />l2
<br />19.9
<br />77
<br />102
<br />
<br />5,'
<br />25
<br />24
<br />56
<br />140
<br />19.0
<br />94
<br />58
<br />'0
<br />Jl
<br />95
<br />176
<br />
<br />7,5
<br />11
<br />11
<br />68
<br />laO
<br />24
<br />109
<br />68
<br />46
<br />41
<br />107
<br />227
<br />
<br />64
<br />B2
<br />B2
<br />81
<br />85
<br />ao
<br />85
<br />B7
<br />B9
<br />91
<br />94
<br />ao
<br />
<br />10.4 16.7 11.7
<br />39 55 lB
<br />]8 49 lB
<br />B2 lOa "
<br />220 280 213
<br />29 l6 3U
<br />124 145 128
<br />78 93 78
<br />52 60 52
<br />50 62 45
<br />119 137 114
<br />278 J52 28' I'
<br />
<br />----------------------------------------------------------------------------------------------------------------------------------
<br />----------------------------------------------------------------------------------------------------------------------------------
<br />
<br />SOUTH PLATTE RIVER BASIN
<br />Reservoir Storage (1000 AF) End of January
<br />
<br />SOUTH PLATTE RIVER BASIN
<br />Watershed Snowpack Analysls - February 1, 2000
<br />
<br />Reservol r
<br />
<br />Usable I
<br />Capacity
<br />
<br />------------------------------------------------------------------------------------------------------------------------ ---------
<br />--------------------------------------------------------------------- ---------------------------------------- -----------
<br />
<br />Last Yr
<br />
<br />... Usable Storage
<br />This Last
<br />Year Year Avg
<br />
<br />Watershed
<br />
<br />This Year as % of
<br />
<br />Number
<br />of
<br />Data Sites
<br />
<br />Average
<br />
<br />------------------------------ ----------------------------------------- ---------------------------------------------------------
<br />--------- ---- --------------------------------------------------------- ---------------------------------------------------------
<br />
<br />ANT'ERO 20, 0 20, 0 20.0 15, 0 BIG THOMPSON BASIN 6 ao ao
<br />BARR LAKE l2 ,0 2]. a 23.4 22 ,6 BOULDER CREEK BASIN 5 119 B9
<br />BLACK HOLLOW a ,0 J ,5 J,O , ,0 CACHE LA POUDRE BASIN a 81 81
<br />BOYD LAKE 49 ,0 43.0 37.1 J) ,7 CLEAR CREEK BASIN , 102 B2
<br />CACHE LA POUDRE 10, 0 7,0 7,0 7 ,2 SAINT VRAIN BASIN J 9B 91
<br />CARTER loa ,9 85.0 54.2 81, 6 UPPER SOUTH PLATTE BASIN 17 130 B2
<br />CHAMBERS LAKE 9 ,0 5,5 5,0 ) ,0 TOTAL SOUTH PLATTE BASIN 41 9B "
<br />CHEESMAN 79, 0 60.5 46.7 56, 0
<br />COBB LAKE l4 ,0 17.5 15.0 1) ,9
<br />ELevEN MILE 97, a 99.9 99.7 91 ,0
<br />eMPIRE ]8, 0 24.5 22.] 22 ,a
<br />FOSSIL CREEK 12 ,0 6,0 6,5 6 ,5
<br />GROSS 41 ,a 36.5 27.0 26 ,
<br />HALLIGAN 6, , 6,' 6,0 ) ,a
<br />HORSECREEK 16 ,0 12.5 12.5 12, 1
<br />HORSETOOTH 149 ,7 108.1 75.7 B9 ,0
<br />JACKSON ]5 ,0 19.4 19.] 28 ,a
<br />JULES BURG 28, 0 15.0 16.4 19 ,9
<br />LAKE LOVELAND 14 ,0 10.8 11.8 a ,a
<br />LONE TREE 9 ,0 7,a a,a 6 ,0
<br />KAR IANO 6 ,0 ',6 5,) , ,5
<br />MARSHALL 10, 0 7,6 a,' , ,1
<br />MARSTON 13, 0 a,) 10.5 7 ,0
<br />MILTON 24.0 18.7 15.7 13 .8
<br />POINT OF ROCKS 70.0 66.3 47.3 55.0
<br />PREWITT ]].0 14.4 22.4 17 .4
<br />RIVERSIDE 6].1 45.0 36.2 40.1
<br />SPINNEY MOUNTAIN 48.7 38.0 26.8 34.6
<br />STANDLEY 42.0 40.0 37.7 25.4
<br />TERRY LAKE: a,o 5,5 5,5 S,l
<br />UNION 13 .0 11.9 10.9 10.5
<br />WINDSOR 19.0 12.0 12.5 10.3
<br />
<br />=~=======:==========:=====~=======:==:=:==================::=:===================:================================:==========:====
<br />
<br />. 90\, 70\. ]0', and 10\ chances of exceeding are the prObabilities that the actual volume will exceed the volumes in the table.
<br />
<br />The average is computed for the 1961-1990 base period.
<br />
<br />(1) The values listed under the 10\ and 90% Chance of Exceeding are actually 5% and 95% exceedance levels.
<br />(2) - The value is natural volume - actual volume may be affected by upstream water management.
<br />
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