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Y <br /> YAMPA/WHITE BASIN n <br /> Basinwide Conditions Assessment: ` <br /> The SWSI value of-2.7 indicates that for March the YAMPA-WHITE RIVER BASINS <br /> basin water supplies were below normal. The Soil s Surface avatar Supply Index Hlrtory <br /> Conservation Service reports March 31 snowpack at 78% of 4_ <br /> normal. The National Weather Service reports basin - — <br /> precipitation as 53% of normal during March. Flow at the 3 34. a <br /> gaging station Yampa River at Steamboat averaged 187 cfs as 2 <br /> compared to the 1961-1993 March average of 145 cfs. 1 — • .- __ 1,' f :.,_ , _ -11.,Lr,-: 4., _ <br /> Moderating temperatures and limited precipitation x <br /> during March produced the decline in snowpack. Water _1_ , '1 '1P1-; :W' ;' _',,, �c---; <br /> content was measured at 17.2 inches, compared to 21.8 inches 2 ; : ,4 <br /> one year ago. The ski area still has fair spring skiing tM �'� ti.'% r ' '_ <br /> conditions. They are reporting 45 inches at mid-mountain 3- _ 1 ; <br /> and 70 inches at the summit. The lower elevations are free of -4 ,, T----T- <br /> JANB5 JAN86 JAN67 JANBB JAN89 JAN90 JAN91 JAN92 JAN93 JAN94 <br /> snow, and the ice is beginning to break out of reservoirs. IA:MTH/YEAR <br /> Stream flows remain at near normal levels. There is little <br /> change in reservoir storage from February. <br /> Outlook <br /> Stream flows will continue at, or near, base flow YAMPA RIVER AT STEAMBOAT <br /> levels until temperatures warm up sufficiently to start melting 90 FLOW BY WATER YEAR <br /> higher elevation snowpack. Warmer than average 80 <br /> temperatures during the next four weeks could result in an <br /> 70 <br /> early runoff. Yampa River basin runoff is predicted to be less i <br /> than 80% if average. This indicates there may be insufficient 60 <br /> runoff to meet requirements, unless summer precipitation is o° 50 <br /> above average. u F 40 <br /> 3° <br /> Administrative/Management Concerns ! <br /> Administration requirements are expected to remain z° <br /> normal for the next two to four weeks. 1D ____________' <br /> ° <br /> OCL Nov Dx Jan F. March Apr II <br /> Public Use Impacts ►DNTH <br /> Adverse impacts on public use will be minimal for the ° E'(,994, o DRY(1977) AVG % 1994 <br /> next four weeks. <br /> 8 <br />