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 FRIDAY: MAY 30 , 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 2.0 .6 333* 41.9 27.7 151
COTTONWOOD CREEK 7600 9.4 1.6 588* 42.6 30.9 138
GRANITE CREEK 6770 5.1 2.4 212 37.2 29.6 126
GRASSY LAKE 7265 20.3 13.8 147 65.7 46.0 143
GROS VENTRE SUMMIT 8775 6.1 1.2 508* 24.6 20.0 123
LEWIS LAKE DIVIDE 7860 29.2 21.0 139 66.9 46.8 143
PHILLIPS BENCH 8200 26.1 18.5 141 53.5 36.9 145
SALT RIVER SUMMIT 7600 .0 .0 100* 28.8 21.3 135
SNAKE RIVER STATION 6920 .1 1.4 7* 44.0 32.3 136
SPRING CREEK DIVIDE 9000 21.8 19.8 110 38.7 33.6 115
THUMB DIVIDE 7980 3.9 1.3 300* 39.3 25.9 152
TOGWOTEE PASS 9580 26.3 23.9 110 42.0 35.1 120
TWO OCEAN PLATEAU 9360 40.5 22.9 177 -M 38.2 *
WILLOW CREEK 8450 22.3 20.2 110 57.4 39.8 144
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Basin wide percent of average 143 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 32.6 20.0 163 36.9 24.8 149
BLACK BEAR 7950 -M 28.6 * -M 50.3 *
CANYON 7940 2.7 2.0 135 30.6 18.7 164
FISHER CREEK 9100 -M 32.4 * 58.0 46.7 124
MADISON PLATEAU 7750 17.4 8.8 198 47.7 33.1 144
NORTHEAST ENTRANCE 7350 .2 .5 40* 24.4 16.3 150
PARKER PEAK 9400 26.6 19.1 139 29.9 21.3 140
SYLVAN LAKE 8420 15.8 14.9 106 39.2 26.0 151
THUMB DIVIDE 7980 3.9 1.3 300* 39.3 25.9 152
TWO OCEAN PLATEAU 9360 40.5 22.9 177 -M 38.2 *
WHISKEY CREEK 6800 1.6 2.2 73 36.8 27.4 134
WHITE MILL 8700 30.8 20.0 154 38.2 36.3 105
WOLVERINE 7650 .3 .4 75* 20.5 17.9 115
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Basin wide percent of average 154 136
WIND RIVER
BURROUGHS CREEK 8750 5.7 2.6 219 30.1 22.3 135
CHRISTINA LAKE 9980 13.1 10.7 122 29.3 23.3 126
COLD SPRINGS 9630 .2 .6 33* 18.0 15.9 113
HOBBS PARK 10100 14.9 10.2 146 21.4 20.7 103
LITTLE WARM 9620 .3 1.3 23* 26.9 19.1 141
SOUTH PASS 9040 -M 10.8 * 31.3 23.8 132
ST. LAWRENCE ALT 8620 .0 .4 0* 17.9 14.7 122
TOGWOTEE PASS 9580 26.3 23.9 110 42.0 35.1 120
TOWNSEND CREEK 8700 .0 2.3 0 20.2 18.4 110
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Basin wide percent of average 116 123
BIGHORN BASIN
BALD MTN. 9375 18.4 19.2 96 24.0 25.0 96
BEAR TRAP MEADOW 7900 .2 .2 100* 14.3 13.7 104
BLACKWATER 9780 32.0 19.5 164 35.6 23.8 150
BONE SPRINGS DIV 9350 11.9 9.1 131 22.5 21.9 103
EVENING STAR 9200 33.0 26.1 126 48.4 29.6 164
GRAVE SPRINGS 8550 .0 -M * 15.5 16.0 97
KIRWIN 9550 1.3 5.7 23 21.8 16.0 136
LOST CREEK 8080 8.5 6.7 127 21.7 18.6 117
MARQUETTE 8760 1.7 4.5 38 18.3 17.1 107
MIDDLE POWDER 7760 .6 3.9 15 20.3 18.0 113
OWL CREEK 8975 .2 .2 100* 11.3 10.5 108
POWDER RIVER PASS 9480 6.8 1.9 358 20.1 18.0 112
SHELL CREEK 9580 13.1 11.9 110 20.3 19.5 104
SYLVAN LAKE 8420 15.8 14.9 106 39.2 26.0 151
SYLVAN ROAD 8120 .2 1.4 14 31.5 21.6 146
TIMBER CREEK 7950 .2 .5 40* 13.5 13.6 99
YOUNTS PEAK 8350 11.6 9.9 117 31.9 22.1 144
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Basin wide percent of average 115 124
SHOSHONE RIVER
BLACKWATER 9780 32.0 19.5 164 35.6 23.8 150
EVENING STAR 9200 33.0 26.1 126 48.4 29.6 164
KIRWIN 9550 1.3 5.7 23 21.8 16.0 136
MARQUETTE 8760 1.7 4.5 38 18.3 17.1 107
SYLVAN LAKE 8420 15.8 14.9 106 39.2 26.0 151
SYLVAN ROAD 8120 .2 1.4 14 31.5 21.6 146
YOUNTS PEAK 8350 11.6 9.9 117 31.9 22.1 144
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Basin wide percent of average 117 145
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .2 100* 14.3 13.7 104
BONE SPRINGS DIV 9350 11.9 9.1 131 22.5 21.9 103
BURGESS JUNCTION 7880 4.5 3.3 136 19.3 17.5 110
CLOUD PEAK RESERVOIR 9860 14.0 9.2 152 22.8 21.0 109
DOME LAKE 8880 3.3 4.7 70 21.1 20.0 106
GRAVE SPRINGS 8550 .0 -M * 15.5 16.0 97
HANSEN SAWMILL 8760 .0 1.2 0 14.3 12.8 112
LOST CREEK 8080 8.5 6.7 127 21.7 18.6 117
MIDDLE POWDER 7760 .6 3.9 15 20.3 18.0 113
POWDER RIVER PASS 9480 6.8 1.9 358 20.1 18.0 112
SUCKER CREEK 8880 9.3 4.8 194 23.3 20.2 115
TIE CREEK 6870 .2 -M * 19.6 16.8 117
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Basin wide percent of average 131 109
BELLE FOURCHE
BLIND PARK 6890 .0 .5 0* 22.2 17.9 124
NORTH RAPID CREEK 6130 .0 -M * 20.8 -M *
WARREN PEAK 6520 .1 .6 17* 18.3 13.1 140
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Basin wide percent of average 9* 131
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 4.0 0 41.2 30.7 134
DIVIDE PEAK 8800 3.5 4.0 88 32.2 30.6 105
ELK RIVER 8700 .0 1.2 0* 32.6 24.3 134
JOE WRIGHT 10120 23.1 17.9 129 41.9 34.6 121
NORTH FRENCH CREEK 10100 28.5 21.0 136 39.6 32.0 124
OLD BATTLE 10000 39.0 25.5 153 49.3 39.3 125
SOUTH BRUSH CREEK 8400 .0 1.6 0 24.3 23.1 105
TOWER 10500 62.4 45.2 138 64.4 49.0 131
WEBBER SPRINGS 9200 14.9 11.5 130 43.7 33.5 130
WILLOW CREEK PASS 9540 10.3 3.2 322 23.3 18.1 129
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Basin wide percent of average 134 125
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.4 14.2 151 36.2 26.9 135
CASPER MTN. 7900 5.7 4.4 130 28.8 22.6 127
CHRISTINA LAKE 9980 13.1 10.7 122 29.3 23.3 126
DEADMAN HILL 10220 15.2 11.2 136 27.2 24.4 111
LAPRELE CREEK 8320 .2 1.3 15 20.1 17.9 112
RENO HILL 8400 7.1 3.6 197 28.8 24.2 119
ROACH 9700 11.0 8.5 129 29.9 29.9 100
SAND LAKE 10080 -M 25.9 * 39.3 28.2 139
SOUTH PASS 9040 -M 10.8 * 31.3 23.8 132
WINDY PEAK 7840 .2 .4 50* 16.9 15.5 109
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Basin wide percent of average 136 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * -M 20.7 *
DIVIDE PEAK 8800 3.5 4.0 88 32.2 30.6 105
OLD BATTLE 10000 39.0 25.5 153 49.3 39.3 125
SANDSTONE RS 8150 .0 .3 0* 28.0 25.8 109
WHISKEY PARK 8950 34.0 13.6 250 43.5 38.0 114
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Basin wide percent of average 176 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 1.2 0* 20.7 20.5 101
BLIND BULL SUM 8650 39.3 17.1 230 39.0 29.3 133
EAST RIM DIVIDE 7930 .2 7.7 3 20.3 19.1 106
ELKHART PARK G.S. 9400 .0 5.0 0 22.3 20.1 111
GROS VENTRE SUMMIT 8775 6.1 1.2 508* 24.6 20.0 123
KENDALL R.S. 7740 .0 .0 100* 26.4 19.6 135
LOOMIS PARK 8240 -M 1.3 * 31.4 23.6 133
NEW FORK LAKE 8340 .0 .7 0* 16.7 18.2 92
SNIDER BASIN 8250 .0 1.0 0* 22.4 19.1 117
SPRING CREEK DIVIDE 9000 21.8 19.8 110 38.7 33.6 115
TRIPLE PEAK 8500 12.3 15.5 79 46.1 38.6 119
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Basin wide percent of average 115* 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 20.0 16.8 119
HEWINTA 9500 .0 .0 100* 18.4 18.8 98
HICKERSON PARK 9150 .0 .1 0* 13.5 15.0 90
HOLE-IN-ROCK 9150 .1 .1 100* 14.2 15.0 95
INDIAN CREEK 9425 24.2 18.3 132 38.3 32.1 119
KELLEY R.S. 8180 .4 1.2 33* 36.6 23.6 155
STEEL CREEK PARK 10100 11.3 12.5 90 21.4 19.6 109
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Basin wide percent of average 112* 115
UPPER BEAR RIVER
BUG LAKE 7950 7.5 3.2 234 35.8 24.8 144
HAYDEN FORK 9400 .4 .1 400* 31.5 26.0 121
KELLEY R.S. 8180 .4 1.2 33* 36.6 23.6 155
LILY LAKE 9050 .1 1.6 6 25.1 20.9 120
MONTE CRISTO 8960 16.1 11.2 144 41.3 33.5 123
SALT RIVER SUMMIT 7600 .0 .0 100* 28.8 21.3 135
TRIAL LAKE 9960 18.9 13.1 144 40.8 31.5 130
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Basin wide percent of average 143 132
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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.