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 23 , 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 7.1 2.5 284 39.4 27.1 145
COTTONWOOD CREEK 7600 13.7 7.4 185 40.9 30.3 135
GRANITE CREEK 6770 10.9 4.7 232 36.0 28.9 125
GRASSY LAKE 7265 25.1 20.0 126 62.2 45.0 138
GROS VENTRE SUMMIT 8775 10.9 5.3 206 23.5 19.5 121
LEWIS LAKE DIVIDE 7860 36.0 25.0 144 64.7 45.8 141
PHILLIPS BENCH 8200 30.5 21.7 141 51.8 36.1 143
SALT RIVER SUMMIT 7600 .1 .0 * 27.7 20.8 133
SNAKE RIVER STATION 6920 .0 6.1 0 41.6 31.6 132
SPRING CREEK DIVIDE 9000 25.4 22.7 112 37.9 32.9 115
THUMB DIVIDE 7980 9.6 5.9 163 38.1 25.4 150
TOGWOTEE PASS 9580 27.1 24.9 109 40.4 34.3 118
TWO OCEAN PLATEAU 9360 39.8 24.5 162 -M 37.3 *
WILLOW CREEK 8450 26.4 23.8 111 54.8 38.9 141
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Basin wide percent of average 135 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 22.3 * 35.5 23.9 149
BLACK BEAR 7950 -M 32.5 * -M 49.4 *
CANYON 7940 6.6 4.1 161 29.9 18.1 165
FISHER CREEK 9100 47.8 34.7 138 56.7 45.6 124
MADISON PLATEAU 7750 23.1 13.5 171 46.8 32.3 145
NORTHEAST ENTRANCE 7350 .2 1.5 13 23.5 15.7 150
PARKER PEAK 9400 27.2 20.8 131 28.5 20.5 139
SYLVAN LAKE 8420 20.0 17.5 114 37.6 25.1 150
THUMB DIVIDE 7980 9.6 5.9 163 38.1 25.4 150
TWO OCEAN PLATEAU 9360 39.8 24.5 162 -M 37.3 *
WHISKEY CREEK 6800 8.7 5.6 155 35.6 26.8 133
WHITE MILL 8700 33.1 22.3 148 36.9 35.4 104
WOLVERINE 7650 .3 1.6 19 19.4 17.3 112
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Basin wide percent of average 142 136
WIND RIVER
BURROUGHS CREEK 8750 11.4 4.6 248 29.4 21.6 136
CHRISTINA LAKE 9980 15.2 13.7 111 28.0 22.5 124
COLD SPRINGS 9630 .2 1.6 12 16.9 15.2 111
HOBBS PARK 10100 15.7 13.3 118 19.8 19.9 99
LITTLE WARM 9620 3.4 3.2 106 25.8 18.4 140
SOUTH PASS 9040 17.2 13.4 128 30.2 23.0 131
ST. LAWRENCE ALT 8620 .0 1.3 0 16.5 14.1 117
TOGWOTEE PASS 9580 27.1 24.9 109 40.4 34.3 118
TOWNSEND CREEK 8700 .0 4.1 0 18.5 17.7 105
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Basin wide percent of average 113 121
BIGHORN BASIN
BALD MTN. 9375 19.9 21.6 92 23.0 24.0 96
BEAR TRAP MEADOW 7900 .2 .7 29 13.8 12.9 107
BLACKWATER 9780 31.3 22.0 142 34.6 23.0 150
BONE SPRINGS DIV 9350 16.1 12.6 128 22.1 21.0 105
EVENING STAR 9200 34.2 28.0 122 47.0 28.7 164
GRAVE SPRINGS 8550 .7 -M * 14.9 15.1 99
KIRWIN 9550 -M 7.7 * -M 15.4 *
LOST CREEK 8080 13.3 9.9 134 20.9 17.7 118
MARQUETTE 8760 5.1 6.0 85 16.8 16.2 104
MIDDLE POWDER 7760 6.5 8.6 76 19.3 17.2 112
OWL CREEK 8975 .2 .6 33 9.9 9.9 100
POWDER RIVER PASS 9480 9.8 3.9 251 19.3 17.2 112
SHELL CREEK 9580 -M 14.3 * 19.8 18.7 106
SYLVAN LAKE 8420 20.0 17.5 114 37.6 25.1 150
SYLVAN ROAD 8120 .2 2.6 8 30.6 20.9 146
TIMBER CREEK 7950 .1 1.4 7 11.6 12.7 91
YOUNTS PEAK 8350 16.3 12.6 129 31.0 21.4 145
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Basin wide percent of average 117 123
SHOSHONE RIVER
BLACKWATER 9780 31.3 22.0 142 34.6 23.0 150
EVENING STAR 9200 34.2 28.0 122 47.0 28.7 164
KIRWIN 9550 -M 7.7 * -M 15.4 *
MARQUETTE 8760 5.1 6.0 85 16.8 16.2 104
SYLVAN LAKE 8420 20.0 17.5 114 37.6 25.1 150
SYLVAN ROAD 8120 .2 2.6 8 30.6 20.9 146
YOUNTS PEAK 8350 16.3 12.6 129 31.0 21.4 145
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Basin wide percent of average 121 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .7 29 13.8 12.9 107
BONE SPRINGS DIV 9350 16.1 12.6 128 22.1 21.0 105
BURGESS JUNCTION 7880 8.4 7.0 120 18.3 16.7 110
CLOUD PEAK RESERVOIR 9860 16.0 12.4 129 21.5 20.1 107
DOME LAKE 8880 6.9 7.3 95 20.5 19.1 107
GRAVE SPRINGS 8550 .7 -M * 14.9 15.1 99
HANSEN SAWMILL 8760 .0 2.5 0 12.9 12.2 106
LOST CREEK 8080 13.3 9.9 134 20.9 17.7 118
MIDDLE POWDER 7760 6.5 8.6 76 19.3 17.2 112
POWDER RIVER PASS 9480 9.8 3.9 251 19.3 17.2 112
SUCKER CREEK 8880 11.3 7.4 153 22.6 19.3 117
TIE CREEK 6870 .1 -M * 18.2 16.1 113
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Basin wide percent of average 122 110
BELLE FOURCHE
BLIND PARK 6890 .0 2.4 0 20.3 16.9 120
NORTH RAPID CREEK 6130 .0 -M * 19.1 -M *
WARREN PEAK 6520 1.7 2.5 68 16.0 12.4 129
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Basin wide percent of average 35 124
UPPER N. PLATTE RIVER
COLUMBINE 9400 5.8 8.7 67 39.1 30.1 130
DIVIDE PEAK 8800 7.1 8.0 89 29.7 29.8 100
ELK RIVER 8700 3.8 4.6 83 31.2 23.8 131
JOE WRIGHT 10120 22.6 20.6 110 38.7 33.6 115
NORTH FRENCH CREEK 10100 28.8 23.6 122 36.9 31.1 119
OLD BATTLE 10000 40.4 30.8 131 47.0 38.5 122
SOUTH BRUSH CREEK 8400 .0 3.6 0 22.5 22.5 100
TOWER 10500 57.7 47.8 121 60.1 47.6 126
WEBBER SPRINGS 9200 19.1 15.7 122 42.7 32.8 130
WILLOW CREEK PASS 9540 14.5 6.7 216 22.3 17.5 127
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Basin wide percent of average 117 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 24.1 19.2 126 35.2 26.1 135
CASPER MTN. 7900 10.6 7.6 139 27.6 21.7 127
CHRISTINA LAKE 9980 15.2 13.7 111 28.0 22.5 124
DEADMAN HILL 10220 16.4 14.6 112 25.8 23.6 109
LAPRELE CREEK 8320 .2 2.3 9 18.6 17.1 109
RENO HILL 8400 10.3 5.9 175 27.4 23.7 116
ROACH 9700 14.9 12.0 124 28.8 28.9 100
SAND LAKE 10080 36.8 30.3 121 37.4 27.4 136
SOUTH PASS 9040 17.2 13.4 128 30.2 23.0 131
WINDY PEAK 7840 .2 1.9 11 14.7 14.7 100
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Basin wide percent of average 121 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * -M 20.2 *
DIVIDE PEAK 8800 7.1 8.0 89 29.7 29.8 100
OLD BATTLE 10000 40.4 30.8 131 47.0 38.5 122
SANDSTONE RS 8150 .0 1.2 0* 26.3 25.1 105
WHISKEY PARK 8950 -M 19.0 * 41.3 37.1 111
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Basin wide percent of average 119* 111
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 5.2 0 19.8 20.0 99
BLIND BULL SUM 8650 42.8 19.6 218 37.6 28.7 131
EAST RIM DIVIDE 7930 4.6 10.0 46 19.2 18.6 103
ELKHART PARK G.S. 9400 4.4 7.3 60 21.4 19.6 109
GROS VENTRE SUMMIT 8775 10.9 5.3 206 23.5 19.5 121
KENDALL R.S. 7740 .0 .0 100* 25.4 19.1 133
LOOMIS PARK 8240 -M 6.0 * 30.3 23.1 131
NEW FORK LAKE 8340 .1 3.3 3 15.9 17.7 90
SNIDER BASIN 8250 .8 4.5 18 22.0 18.6 118
SPRING CREEK DIVIDE 9000 25.4 22.7 112 37.9 32.9 115
TRIPLE PEAK 8500 16.1 18.1 89 44.4 37.7 118
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Basin wide percent of average 109 116
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.2 16.4 117
HEWINTA 9500 .0 .0 100* 17.3 18.2 95
HICKERSON PARK 9150 .0 .3 0* 12.7 14.4 88
HOLE-IN-ROCK 9150 .1 .3 33* 13.4 14.4 93
INDIAN CREEK 9425 27.0 21.4 126 37.2 31.4 118
KELLEY R.S. 8180 3.7 5.3 70 35.5 23.1 154
STEEL CREEK PARK 10100 12.1 14.4 84 20.1 18.7 107
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Basin wide percent of average 103* 114
UPPER BEAR RIVER
BUG LAKE 7950 13.5 6.4 211 34.7 24.2 143
HAYDEN FORK 9400 .4 .4 100* 30.3 25.3 120
KELLEY R.S. 8180 3.7 5.3 70 35.5 23.1 154
LILY LAKE 9050 .2 3.5 6 24.0 20.2 119
MONTE CRISTO 8960 20.8 16.2 128 39.6 32.7 121
SALT RIVER SUMMIT 7600 .1 .0 * 27.7 20.8 133
TRIAL LAKE 9960 21.1 16.8 126 39.7 30.7 129
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Basin wide percent of average 123 131
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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.