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yAMPA/WIETE BASIN • June, 1997 <br /> 1 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 3.3 indicates that for May the YAMPA—WHITE RIVER BASINS <br /> basin water supplies were well above normal. The Natural s Su-face Water Supply Index Huctory <br /> Resources Conservation Service reports June 1 snowpack as 4_ <br /> 156% of normal. Flow at the gaging station Yampa River at _ <br /> Steamboat averaged 2,360 cfs as compared to the long term • 3 <br /> average of 1,600 cfs. 2- ```' <br /> The Steamboat Springs weather observer reports a > 1- i =q= <br /> total of 3.29 inches of precipitation for the month (including ° - 17 _� ,�RI . <br /> 4.5 inches of snow), which is 154% of average. 7 ►� ; <br /> Although temperatures continued increasing, cool ' <br /> g P g • _2 ,, " <br /> periods during storm systems moderated the high elevation G \ CI v: <br /> runoff until the last week of May. The Yampa and Elk Rivers 3- - ; J 1 L' / <br /> / <br /> approached flood stage on May 24,with higher flows expected -4 <br /> JAN66 JAN89 JAN90 JAN91 JAN92 JAN93 JAN94 JAN9S JAN86 JAN97 <br /> during the first week of June. Most reservoirs are at capacity, ,ONTFYYEAR <br /> and are spilling. High elevation reservoirs have not yet filled. <br /> Outlook <br /> Stream flows should peak during the first week of <br /> June. Because of above average snowpack, the runoff can be YAMPA RIVER AT STEAMBOAT <br /> expected to continue through June, and possibly into early C00 FLOW 8Y WATER YEAR <br /> July. <br /> 300 <br /> Administrative/Management Concerns i <br /> Concerns for the next four to six weeks are flooding i °° " <br /> of low lying areas along the rivers. �° <br /> Y <br /> V <br /> Public Use Impacts s 200 . <br /> River closure during high flows will impact public i <br /> recreational use. 100 <br /> Oct NOV Dec Jan Feb March April IKy June July Aup Sept <br /> W0NTH <br /> 0 WET 0994) O OR`!C1977) C AVG % 1997 <br /> 8 <br />