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 SATURDAY: MAY 24 , 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 6.2 2.3 270 39.6 27.2 146
COTTONWOOD CREEK 7600 12.9 6.6 195 41.0 30.4 135
GRANITE CREEK 6770 10.0 4.3 233 36.0 29.0 124
GRASSY LAKE 7265 24.4 19.2 127 62.7 45.2 139
GROS VENTRE SUMMIT 8775 10.0 4.8 208 23.7 19.6 121
LEWIS LAKE DIVIDE 7860 35.1 24.4 144 65.1 45.9 142
PHILLIPS BENCH 8200 29.6 21.2 140 51.9 36.2 143
SALT RIVER SUMMIT 7600 .0 .0 100* 27.7 20.8 133
SNAKE RIVER STATION 6920 .1 5.4 2 41.9 31.7 132
SPRING CREEK DIVIDE 9000 24.6 22.3 110 37.9 33.0 115
THUMB DIVIDE 7980 8.9 5.3 168 38.3 25.5 150
TOGWOTEE PASS 9580 26.9 24.7 109 40.5 34.4 118
TWO OCEAN PLATEAU 9360 39.6 24.3 163 -M 37.4 *
WILLOW CREEK 8450 25.1 23.2 108 55.2 39.0 142
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Basin wide percent of average 135 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 32.4 22.0 147 35.6 24.0 148
BLACK BEAR 7950 -M 32.0 * -M 49.5 *
CANYON 7940 6.1 3.8 161 30.1 18.2 165
FISHER CREEK 9100 47.8 34.4 139 56.9 45.8 124
MADISON PLATEAU 7750 22.2 12.9 172 47.2 32.4 146
NORTHEAST ENTRANCE 7350 .2 1.3 15 23.7 15.8 150
PARKER PEAK 9400 26.9 20.5 131 28.5 20.6 138
SYLVAN LAKE 8420 19.3 17.2 112 38.0 25.3 150
THUMB DIVIDE 7980 8.9 5.3 168 38.3 25.5 150
TWO OCEAN PLATEAU 9360 39.6 24.3 163 -M 37.4 *
WHISKEY CREEK 6800 7.9 5.1 155 35.9 26.9 133
WHITE MILL 8700 32.7 22.0 149 37.1 35.6 104
WOLVERINE 7650 .4 1.4 29 19.6 17.4 113
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Basin wide percent of average 144 136
WIND RIVER
BURROUGHS CREEK 8750 10.5 4.3 244 29.5 21.7 136
CHRISTINA LAKE 9980 14.7 13.3 111 28.1 22.6 124
COLD SPRINGS 9630 .2 1.5 13 17.0 15.3 111
HOBBS PARK 10100 15.2 12.9 118 19.8 20.0 99
LITTLE WARM 9620 2.6 2.9 90 26.2 18.5 142
SOUTH PASS 9040 16.6 13.1 127 30.2 23.1 131
ST. LAWRENCE ALT 8620 .0 1.2 0 16.5 14.2 116
TOGWOTEE PASS 9580 26.9 24.7 109 40.5 34.4 118
TOWNSEND CREEK 8700 .0 3.8 0 18.5 17.8 104
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Basin wide percent of average 112 121
BIGHORN BASIN
BALD MTN. 9375 19.6 21.3 92 23.0 24.1 95
BEAR TRAP MEADOW 7900 .2 .7 29* 13.8 13.0 106
BLACKWATER 9780 31.5 21.6 146 34.7 23.1 150
BONE SPRINGS DIV 9350 15.2 12.1 126 22.1 21.1 105
EVENING STAR 9200 34.3 27.8 123 47.1 28.9 163
GRAVE SPRINGS 8550 .3 -M * 15.0 15.2 99
KIRWIN 9550 -M 7.5 * -M 15.5 *
LOST CREEK 8080 12.4 9.5 131 21.0 17.8 118
MARQUETTE 8760 4.8 5.7 84 17.1 16.3 105
MIDDLE POWDER 7760 5.4 7.9 68 19.6 17.3 113
OWL CREEK 8975 .2 .5 40 10.5 10.0 105
POWDER RIVER PASS 9480 9.2 3.6 256 19.4 17.3 112
SHELL CREEK 9580 14.6 13.9 105 19.8 18.8 105
SYLVAN LAKE 8420 19.3 17.2 112 38.0 25.3 150
SYLVAN ROAD 8120 .2 2.4 8 30.8 21.0 147
TIMBER CREEK 7950 .2 1.3 15 11.8 12.8 92
YOUNTS PEAK 8350 15.6 12.3 127 31.0 21.5 144
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Basin wide percent of average 116 123
SHOSHONE RIVER
BLACKWATER 9780 31.5 21.6 146 34.7 23.1 150
EVENING STAR 9200 34.3 27.8 123 47.1 28.9 163
KIRWIN 9550 -M 7.5 * -M 15.5 *
MARQUETTE 8760 4.8 5.7 84 17.1 16.3 105
SYLVAN LAKE 8420 19.3 17.2 112 38.0 25.3 150
SYLVAN ROAD 8120 .2 2.4 8 30.8 21.0 147
YOUNTS PEAK 8350 15.6 12.3 127 31.0 21.5 144
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Basin wide percent of average 121 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .7 29* 13.8 13.0 106
BONE SPRINGS DIV 9350 15.2 12.1 126 22.1 21.1 105
BURGESS JUNCTION 7880 7.8 6.4 122 18.4 16.8 110
CLOUD PEAK RESERVOIR 9860 14.6 12.0 122 21.5 20.2 106
DOME LAKE 8880 5.9 6.9 86 20.5 19.2 107
GRAVE SPRINGS 8550 .3 -M * 15.0 15.2 99
HANSEN SAWMILL 8760 .0 2.3 0 12.9 12.3 105
LOST CREEK 8080 12.4 9.5 131 21.0 17.8 118
MIDDLE POWDER 7760 5.4 7.9 68 19.6 17.3 113
POWDER RIVER PASS 9480 9.2 3.6 256 19.4 17.3 112
SUCKER CREEK 8880 10.6 7.1 149 22.6 19.5 116
TIE CREEK 6870 .1 -M * 18.3 16.2 113
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Basin wide percent of average 119 109
BELLE FOURCHE
BLIND PARK 6890 .0 2.2 0 20.9 17.1 122
NORTH RAPID CREEK 6130 .0 -M * 19.1 -M *
WARREN PEAK 6520 .8 2.2 36 16.0 12.5 128
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Basin wide percent of average 18 125
UPPER N. PLATTE RIVER
COLUMBINE 9400 4.2 8.1 52 39.2 30.2 130
DIVIDE PEAK 8800 5.8 7.4 78 29.9 29.9 100
ELK RIVER 8700 2.4 4.1 59 31.3 23.9 131
JOE WRIGHT 10120 21.9 20.2 108 38.8 33.7 115
NORTH FRENCH CREEK 10100 28.0 23.3 120 37.1 31.2 119
OLD BATTLE 10000 39.1 30.1 130 47.0 38.6 122
SOUTH BRUSH CREEK 8400 .0 3.3 0 22.9 22.6 101
TOWER 10500 58.3 47.4 123 60.2 47.8 126
WEBBER SPRINGS 9200 17.8 15.1 118 42.8 32.9 130
WILLOW CREEK PASS 9540 14.2 6.2 229 22.3 17.6 127
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Basin wide percent of average 116 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 23.2 18.5 125 35.3 26.2 135
CASPER MTN. 7900 9.3 7.1 131 27.6 21.8 127
CHRISTINA LAKE 9980 14.7 13.3 111 28.1 22.6 124
DEADMAN HILL 10220 15.4 14.2 108 25.8 23.7 109
LAPRELE CREEK 8320 .1 2.1 5 18.8 17.2 109
RENO HILL 8400 9.1 5.6 163 27.4 23.8 115
ROACH 9700 13.8 11.5 120 28.8 29.1 99
SAND LAKE 10080 35.0 29.7 118 37.6 27.5 137
SOUTH PASS 9040 16.6 13.1 127 30.2 23.1 131
WINDY PEAK 7840 .2 1.6 12 15.1 14.8 102
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Basin wide percent of average 118 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * -M 20.3 *
DIVIDE PEAK 8800 5.8 7.4 78 29.9 29.9 100
OLD BATTLE 10000 39.1 30.1 130 47.0 38.6 122
SANDSTONE RS 8150 .0 1.1 0* 26.6 25.2 106
WHISKEY PARK 8950 35.5 18.3 194 41.5 37.2 112
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Basin wide percent of average 141 111
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .1 4.6 2 19.8 20.1 99
BLIND BULL SUM 8650 42.0 19.2 219 37.6 28.8 131
EAST RIM DIVIDE 7930 3.9 9.7 40 19.2 18.7 103
ELKHART PARK G.S. 9400 3.6 6.9 52 21.5 19.7 109
GROS VENTRE SUMMIT 8775 10.0 4.8 208 23.7 19.6 121
KENDALL R.S. 7740 .1 .0 * 25.7 19.2 134
LOOMIS PARK 8240 -M 5.3 * 30.4 23.2 131
NEW FORK LAKE 8340 .2 2.9 7 16.0 17.8 90
SNIDER BASIN 8250 .2 4.0 5 22.0 18.7 118
SPRING CREEK DIVIDE 9000 24.6 22.3 110 37.9 33.0 115
TRIPLE PEAK 8500 15.1 17.8 85 44.5 37.8 118
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Basin wide percent of average 108 116
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.3 16.5 117
HEWINTA 9500 .0 .0 100* 17.3 18.3 95
HICKERSON PARK 9150 .0 .3 0* 12.9 14.5 89
HOLE-IN-ROCK 9150 .1 .3 33* 13.5 14.5 93
INDIAN CREEK 9425 26.2 20.9 125 37.2 31.5 118
KELLEY R.S. 8180 3.0 4.7 64 35.6 23.2 153
STEEL CREEK PARK 10100 11.7 14.2 82 20.2 18.8 107
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Basin wide percent of average 101* 114
UPPER BEAR RIVER
BUG LAKE 7950 12.2 6.0 203 34.7 24.3 143
HAYDEN FORK 9400 .4 .3 133* 30.4 25.4 120
KELLEY R.S. 8180 3.0 4.7 64 35.6 23.2 153
LILY LAKE 9050 .2 3.2 6 24.0 20.3 118
MONTE CRISTO 8960 19.5 15.5 126 39.8 32.8 121
SALT RIVER SUMMIT 7600 .0 .0 100* 27.7 20.8 133
TRIAL LAKE 9960 20.2 16.2 125 39.9 30.8 130
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Basin wide percent of average 121 131
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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.