Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of MONDAY: MAY 26 , 1997
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 5.2 1.7 306* 40.7 27.4 149
COTTONWOOD CREEK 7600 12.2 4.9 249 41.7 30.5 137
GRANITE CREEK 6770 8.8 3.7 238 36.9 29.2 126
GRASSY LAKE 7265 23.5 17.4 135 63.5 45.4 140
GROS VENTRE SUMMIT 8775 9.3 3.6 258 24.3 19.7 123
LEWIS LAKE DIVIDE 7860 33.0 23.3 142 65.5 46.2 142
PHILLIPS BENCH 8200 28.8 20.3 142 52.5 36.4 144
SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.0 136
SNAKE RIVER STATION 6920 .1 4.1 2 42.4 31.9 133
SPRING CREEK DIVIDE 9000 24.0 21.5 112 38.5 33.2 116
THUMB DIVIDE 7980 7.9 4.0 198 38.7 25.6 151
TOGWOTEE PASS 9580 27.9 24.4 114 41.3 34.6 119
TWO OCEAN PLATEAU 9360 39.2 23.8 165 -M 37.7 *
WILLOW CREEK 8450 24.7 22.2 111 56.2 39.3 143
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Basin wide percent of average 140 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 33.4 21.3 157 36.7 24.3 151
BLACK BEAR 7950 -M 30.9 * -M 49.8 *
CANYON 7940 5.4 3.2 169 30.4 18.4 165
FISHER CREEK 9100 48.4 33.7 144 57.7 46.1 125
MADISON PLATEAU 7750 21.0 11.5 183 47.4 32.6 145
NORTHEAST ENTRANCE 7350 .2 1.0 20 24.3 16.0 152
PARKER PEAK 9400 27.5 20.0 138 29.4 20.9 141
SYLVAN LAKE 8420 18.6 16.4 113 38.8 25.5 152
THUMB DIVIDE 7980 7.9 4.0 198 38.7 25.6 151
TWO OCEAN PLATEAU 9360 39.2 23.8 165 -M 37.7 *
WHISKEY CREEK 6800 6.0 4.1 146 36.2 27.1 134
WHITE MILL 8700 32.7 21.3 154 37.9 35.8 106
WOLVERINE 7650 .3 1.1 27* 20.5 17.5 117
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Basin wide percent of average 149 137
WIND RIVER
BURROUGHS CREEK 8750 9.2 3.7 249 29.9 21.9 137
CHRISTINA LAKE 9980 13.8 12.4 111 28.3 22.8 124
COLD SPRINGS 9630 .4 1.2 33 17.6 15.5 114
HOBBS PARK 10100 14.2 12.0 118 20.1 20.2 100
LITTLE WARM 9620 1.3 2.4 54 26.5 18.7 142
SOUTH PASS 9040 18.1 12.3 147 30.2 23.3 130
ST. LAWRENCE ALT 8620 .1 .9 11 16.7 14.4 116
TOGWOTEE PASS 9580 27.9 24.4 114 41.3 34.6 119
TOWNSEND CREEK 8700 .0 3.3 0 18.8 18.0 104
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Basin wide percent of average 117 121
BIGHORN BASIN
BALD MTN. 9375 19.5 20.6 95 23.9 24.4 98
BEAR TRAP MEADOW 7900 .1 .5 20* 13.8 13.3 104
BLACKWATER 9780 31.7 20.9 152 35.2 23.3 151
BONE SPRINGS DIV 9350 14.0 11.1 126 22.3 21.4 104
EVENING STAR 9200 34.3 27.2 126 48.1 29.1 165
GRAVE SPRINGS 8550 .0 -M * 15.1 15.5 97
KIRWIN 9550 4.0 6.9 58 21.6 15.6 138
LOST CREEK 8080 10.9 8.6 127 21.2 18.1 117
MARQUETTE 8760 3.9 5.3 74 18.3 16.6 110
MIDDLE POWDER 7760 3.8 6.6 58 19.7 17.5 113
OWL CREEK 8975 .2 .4 50* 10.8 10.2 106
POWDER RIVER PASS 9480 8.0 3.0 267 19.5 17.5 111
SHELL CREEK 9580 13.9 13.2 105 20.1 19.0 106
SYLVAN LAKE 8420 18.6 16.4 113 38.8 25.5 152
SYLVAN ROAD 8120 .2 2.1 10 31.5 21.2 149
TIMBER CREEK 7950 .6 1.0 60 13.0 13.1 99
YOUNTS PEAK 8350 14.3 11.5 124 31.3 21.7 144
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Basin wide percent of average 115 125
SHOSHONE RIVER
BLACKWATER 9780 31.7 20.9 152 35.2 23.3 151
EVENING STAR 9200 34.3 27.2 126 48.1 29.1 165
KIRWIN 9550 4.0 6.9 58 21.6 15.6 138
MARQUETTE 8760 3.9 5.3 74 18.3 16.6 110
SYLVAN LAKE 8420 18.6 16.4 113 38.8 25.5 152
SYLVAN ROAD 8120 .2 2.1 10 31.5 21.2 149
YOUNTS PEAK 8350 14.3 11.5 124 31.3 21.7 144
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Basin wide percent of average 118 147
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .5 20* 13.8 13.3 104
BONE SPRINGS DIV 9350 14.0 11.1 126 22.3 21.4 104
BURGESS JUNCTION 7880 6.7 5.4 124 19.0 17.1 111
CLOUD PEAK RESERVOIR 9860 14.2 11.1 128 22.1 20.5 108
DOME LAKE 8880 4.9 6.2 79 20.7 19.5 106
GRAVE SPRINGS 8550 .0 -M * 15.1 15.5 97
HANSEN SAWMILL 8760 .0 1.9 0 14.0 12.5 112
LOST CREEK 8080 10.9 8.6 127 21.2 18.1 117
MIDDLE POWDER 7760 3.8 6.6 58 19.7 17.5 113
POWDER RIVER PASS 9480 8.0 3.0 267 19.5 17.5 111
SUCKER CREEK 8880 9.8 6.3 156 22.6 19.7 115
TIE CREEK 6870 .2 -M * 18.8 16.4 115
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Basin wide percent of average 119 109
BELLE FOURCHE
BLIND PARK 6890 .0 1.6 0 21.7 17.3 125
NORTH RAPID CREEK 6130 .0 -M * 20.2 -M *
WARREN PEAK 6520 .2 1.7 12 17.2 12.7 135
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Basin wide percent of average 6 130
UPPER N. PLATTE RIVER
COLUMBINE 9400 2.3 6.7 34 39.3 30.4 129
DIVIDE PEAK 8800 4.1 6.3 65 30.2 30.1 100
ELK RIVER 8700 .2 3.1 6 31.5 24.0 131
JOE WRIGHT 10120 21.5 19.4 111 39.2 34.0 115
NORTH FRENCH CREEK 10100 27.0 22.5 120 37.2 31.5 118
OLD BATTLE 10000 38.2 28.6 134 47.6 38.8 123
SOUTH BRUSH CREEK 8400 .0 2.7 0 22.7 22.8 100
TOWER 10500 57.9 46.7 124 61.0 48.2 127
WEBBER SPRINGS 9200 16.5 13.9 119 43.1 33.1 130
WILLOW CREEK PASS 9540 12.0 5.2 231 22.5 17.7 127
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Basin wide percent of average 116 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.8 17.1 127 35.3 26.5 133
CASPER MTN. 7900 7.0 6.2 113 27.7 22.1 125
CHRISTINA LAKE 9980 13.8 12.4 111 28.3 22.8 124
DEADMAN HILL 10220 14.5 13.2 110 25.9 23.9 108
LAPRELE CREEK 8320 .2 1.8 11 18.6 17.4 107
RENO HILL 8400 7.0 4.9 143 27.4 23.9 115
ROACH 9700 12.5 10.5 119 29.0 29.3 99
SAND LAKE 10080 34.0 28.4 120 37.6 27.7 136
SOUTH PASS 9040 18.1 12.3 147 30.2 23.3 130
WINDY PEAK 7840 .2 1.2 17 15.6 15.0 104
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Basin wide percent of average 120 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * -M 20.4 *
DIVIDE PEAK 8800 4.1 6.3 65 30.2 30.1 100
OLD BATTLE 10000 38.2 28.6 134 47.6 38.8 123
SANDSTONE RS 8150 .0 .8 0* 26.6 25.4 105
WHISKEY PARK 8950 35.9 16.7 215 41.6 37.5 111
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Basin wide percent of average 149 111
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 3.5 0 20.3 20.2 100
BLIND BULL SUM 8650 41.9 18.5 226 38.2 29.0 132
EAST RIM DIVIDE 7930 3.0 9.0 33 20.0 18.8 106
ELKHART PARK G.S. 9400 2.3 6.3 37 22.0 19.8 111
GROS VENTRE SUMMIT 8775 9.3 3.6 258 24.3 19.7 123
KENDALL R.S. 7740 .0 .0 100* 26.2 19.3 136
LOOMIS PARK 8240 -M 4.0 * 31.2 23.3 134
NEW FORK LAKE 8340 .1 2.2 5 16.4 17.9 92
SNIDER BASIN 8250 .0 3.0 0 22.4 18.8 119
SPRING CREEK DIVIDE 9000 24.0 21.5 112 38.5 33.2 116
TRIPLE PEAK 8500 14.6 17.0 86 45.3 38.1 119
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Basin wide percent of average 113 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.7 16.6 119
HEWINTA 9500 .0 .0 100* 17.9 18.5 97
HICKERSON PARK 9150 .0 .2 0* 13.2 14.6 90
HOLE-IN-ROCK 9150 .2 .2 100* 14.1 14.6 97
INDIAN CREEK 9425 25.6 20.0 128 37.7 31.7 119
KELLEY R.S. 8180 2.0 3.5 57 36.1 23.3 155
STEEL CREEK PARK 10100 12.2 13.6 90 20.9 19.1 109
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Basin wide percent of average 107* 115
UPPER BEAR RIVER
BUG LAKE 7950 11.8 5.1 231 35.5 24.5 145
HAYDEN FORK 9400 .3 .2 150* 31.3 25.6 122
KELLEY R.S. 8180 2.0 3.5 57 36.1 23.3 155
LILY LAKE 9050 .5 2.7 19 24.9 20.5 121
MONTE CRISTO 8960 19.7 14.1 140 40.8 33.0 124
SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.0 136
TRIAL LAKE 9960 20.5 15.2 135 40.7 31.0 131
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Basin wide percent of average 134 133
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-M = Missing data
* = Data may not provide a valid measure of conditions.
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.