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YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS <br />Streamflow Forecasts - April 1, 2003 <br />i <br />• <br />a < = = = =_= Drier =____= <br />Future Conditions = _____= Wetter <br />= - -__» <br />-------- - - - - °_ <br />f <br />Forecast Point <br />Forecast <br />Period <br />______________ <br />90% <br />(1000AF) <br />70% <br />(1000AF)--- <br />Chance Of Exceeding * - - - -- - - - - -- <br />501 (Most Probable) <br />(1000AF) (% AVG.) (1000AF) <br />(1000AF) <br />30 -Yr Avg. <br />(1000AF) <br />NORTH PLATTE RIVER nr Northgate <br />APR -SEP <br />102 <br />160 <br />200 <br />200 74 <br />i 240 <br />300 <br />270 <br />LARAMIE RIVER nr Woods <br />APR -SEP <br />37 <br />74 i <br />100 74 <br />i 126 <br />163 <br />135 <br />Yampa R abv Stagecoach Res <br />APR -JUL <br />16.1 <br />22 i <br />26 90 <br />i 30 <br />36 <br />29 . <br />Yampa River at Steamboat Springs <br />APR -JUL <br />180 <br />220 i <br />245 88 <br />i 270 <br />310 <br />280 <br />Elk River nr Milner <br />APR -JUL <br />158 <br />210 i <br />250 77 <br />i 293 <br />363 <br />325 <br />Elkhead Creek nr Elkhead <br />APR -JUL <br />15.7 <br />23 i <br />30 77 <br />i 39 <br />57 <br />39 <br />ELKHEAD CREEK blw Maynard Gulch <br />APR -JUL <br />30 <br />42 i <br />50 85 <br />i 58 <br />70 <br />59 <br />Fortification Ck nr Fortification <br />MAR -JUN <br />2.20 <br />4.70 i <br />6.40 85 <br />8.10 <br />10.60 <br />7.50 <br />Yampa River nr Maybell <br />APR -JUL <br />515 <br />700 <br />820 83 i <br />945 <br />1125 <br />990 <br />Little Snake River nr Slater <br />APR -JUL <br />85 <br />108 <br />126 79 i <br />145 <br />175 <br />159 <br />LITTLE SNAKE R nr Dixon <br />APR -JUL <br />150 <br />215' i- <br />260 79 i <br />305 <br />370 <br />330 <br />LITTLE SNAKE R nr Lily <br />APR -JUL <br />171 <br />240 i <br />285 78 i <br />330 <br />400 <br />365 <br />White River nr Meeker <br />APR -JUL <br />127 <br />156 i <br />180 62 i <br />207 <br />255 <br />290 <br />YAMPA WHITE, AND NORTH PLATTE <br />- Reservoir Storage (1000 AF) - End <br />RIVER BASINS = _ <br />of March <br />= YAMPA, WHITE, AND NORTH PLATTE RIVER <br />watershed Snowpack Analysis - April <br />BASINS = <br />1, 2003 <br />Reservoir <br />Usable <br />Ca acit <br />* ** Usable Storage * ** <br />This Last <br />Year Year Avg <br />g <br />Number <br />Watershed of <br />Data Sites <br />This <br />Last <br />Year as of <br />Yr Average <br />STAGECOACH <br />33.3 <br />26.0 <br />- <br />26.8 24.6 <br />-� <br />=== <br />LARAMIE RIVER BASIN 4 <br />177 <br />100 <br />YAMCOLO <br />9.1 <br />3.0 <br />5.1 6.9 <br />NORTH PLATTE RIVER BASIN 9 <br />152 <br />98 <br />TOTAL NORTH PLATTE BASIN 12 <br />158 <br />98 <br />ELK RIVER BASIN 2 <br />121 <br />89 <br />YAMPA RIVER BASIN 11 <br />137 <br />95 <br />WHITE RIVER BASIN 4 <br />133 <br />85 <br />TOTAL YAMPA AND WHITE RIV 14 <br />f <br />135 <br />91 <br />LITTLE SNAKE RIVER BASIN 8 <br />133 <br />96 <br />* 90 %,.70 %, 30 %,:and l0% chances of <br />exceeding <br />are the probabilities that the actual volume will exceed the volumes in the table. <br />The average is computed for the 1971 -2000 <br />base <br />period. <br />(1) - The values listed under the 10% <br />(2) - The value is natural volume - actual <br />and 90% Chance of Exceeding <br />volume may be affected <br />are actually 51 and 95% exceedance levels. <br />by upstream water management. <br />i <br />