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 SUNDAY: NOVEMBER 29 , 1998
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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 3.7 3.7 100 5.2 6.2 84
COTTONWOOD CREEK 7600 3.5 4.0 88 6.7 6.6 102
GRANITE CREEK 6770 2.4 3.2 75 3.9 6.5 60
GRASSY LAKE 7265 6.5 6.5 100 8.4 10.0 84
GROS VENTRE SUMMIT 8775 4.0 3.5 114 4.6 4.5 102
LEWIS LAKE DIVIDE 7860 6.4 6.4 100 9.0 10.1 89
PHILLIPS BENCH 8200 6.0 5.3 113 6.6 7.8 85
SALT RIVER SUMMIT 7600 1.5 2.1 71 3.9 4.7 83
SNAKE RIVER STATION 6920 3.5 3.6 97 5.4 7.0 77
SPRING CREEK DIVIDE 9000 4.5 5.6 80 5.6 7.1 79
THUMB DIVIDE 7980 6.4 3.4 188 6.8 5.7 119
TOGWOTEE PASS 9580 6.9 5.8 119 7.1 7.5 95
TWO OCEAN PLATEAU 9360 9.5 7.5 127 8.6 8.5 101
WILLOW CREEK 8450 4.9 5.8 84 9.7 8.6 113
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Basin wide percent of average 105 91
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 5.9 6.7 88 5.3 4.9 108
BLACK BEAR 7950 11.7 7.9 148 11.8 9.5 124
CANYON 7940 3.9 2.6 150 4.7 4.1 115
FISHER CREEK 9100 9.3 8.4 111 8.9 8.8 101
MADISON PLATEAU 7750 -M 5.0 * 8.8 6.6 133
NORTHEAST ENTRANCE 7350 1.9 1.8 106 3.5 3.6 97
PARKER PEAK 9400 5.7 6.8 84 -M 4.8 *
SYLVAN LAKE 8420 7.3 6.4 114 9.1 6.2 147
THUMB DIVIDE 7980 6.4 3.4 188 6.8 5.7 119
TWO OCEAN PLATEAU 9360 9.5 7.5 127 8.6 8.5 101
WHISKEY CREEK 6800 5.1 3.6 142 6.7 5.4 124
WHITE MILL 8700 5.7 5.8 98 5.9 7.2 82
WOLVERINE 7650 3.2 2.2 145 3.5 3.9 90
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Basin wide percent of average 120 112
WIND RIVER
BURROUGHS CREEK 8750 3.4 3.5 97 3.9 4.9 80
COLD SPRINGS 9630 3.9 2.6 150 5.2 3.9 133
DEER PARK 9700 4.7 -M * 6.7 -M *
HOBBS PARK 10100 6.3 4.8 131 6.8 4.2 162
LITTLE WARM 9620 3.9 3.1 126 4.7 4.3 109
SOUTH PASS 9040 4.2 5.1 82 5.9 5.1 116
ST. LAWRENCE ALT 8620 3.1 1.9 163 5.4 3.7 146
TOGWOTEE PASS 9580 6.9 5.8 119 7.1 7.5 95
TOWNSEND CREEK 8700 3.8 2.6 146 6.3 3.8 166
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Basin wide percent of average 121 121
BIGHORN BASIN
BALD MTN. 9375 5.0 5.8 86 5.2 4.9 106
BEAR TRAP MEADOW 7900 2.0 2.0 100 5.1 3.0 170
BLACKWATER 9780 9.4 5.6 168 8.3 5.4 154
BONE SPRINGS DIV 9350 4.0 4.9 82 4.6 4.3 107
EVENING STAR 9200 7.4 8.2 90 8.1 6.5 125
GRAVE SPRINGS 8550 2.0 2.7 74 5.2 3.5 149
KIRWIN 9550 4.2 3.2 131 4.7 3.6 131
MARQUETTE 8760 4.4 2.3 191 5.2 3.4 153
MIDDLE POWDER 7760 1.8 3.5 51 8.0 4.0 200
OWL CREEK 8975 2.7 1.1 245 3.5 1.9 184
POWDER RIVER PASS 9480 2.2 3.1 71 4.2 3.7 114
SHELL CREEK 9580 4.3 4.7 91 3.9 4.0 98
SYLVAN LAKE 8420 7.3 6.4 114 9.1 6.2 147
SYLVAN ROAD 8120 4.0 3.4 118 5.1 5.0 102
TIMBER CREEK 7950 2.7 1.1 245 4.1 2.4 171
YOUNTS PEAK 8350 5.2 5.2 100 4.7 4.8 98
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Basin wide percent of average 109 134
SHOSHONE RIVER
BLACKWATER 9780 9.4 5.6 168 8.3 5.4 154
EVENING STAR 9200 7.4 8.2 90 8.1 6.5 125
KIRWIN 9550 4.2 3.2 131 4.7 3.6 131
MARQUETTE 8760 4.4 2.3 191 5.2 3.4 153
SYLVAN LAKE 8420 7.3 6.4 114 9.1 6.2 147
SYLVAN ROAD 8120 4.0 3.4 118 5.1 5.0 102
YOUNTS PEAK 8350 5.2 5.2 100 4.7 4.8 98
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Basin wide percent of average 122 130
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.0 2.0 100 5.1 3.0 170
BIG GOOSE 7990 1.7 -M * 4.7 -M *
BONE SPRINGS DIV 9350 4.0 4.9 82 4.6 4.3 107
BURGESS JUNCTION 7880 1.9 3.5 54 4.3 3.7 116
CLOUD PEAK RESERVOIR 9860 3.8 3.2 119 5.5 4.2 131
DOME LAKE 8880 2.3 3.9 59 3.7 4.5 82
GRAVE SPRINGS 8550 2.0 2.7 74 5.2 3.5 149
HANSEN SAWMILL 8760 1.7 2.0 85 3.3 2.9 114
MIDDLE POWDER 7760 1.8 3.5 51 8.0 4.0 200
POWDER RIVER PASS 9480 2.2 3.1 71 4.2 3.7 114
SUCKER CREEK 8880 3.2 2.8 114 5.2 4.1 127
TIE CREEK 6870 .8 -M * 3.4 3.5 97
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Basin wide percent of average 79 127
BELLE FOURCHE
BLIND PARK 6890 1.1 3.3 33 7.4 3.1 239
NORTH RAPID CREEK 6130 .8 -M * 7.9 -M *
WARREN PEAK 6520 1.5 3.3 45 7.6 2.6 292
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Basin wide percent of average 39 263
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.2 4.8 67 6.4 6.0 107
DIVIDE PEAK 8800 4.1 5.5 75 10.0 6.5 154
ELK RIVER 8700 1.8 3.4 53 8.2 4.9 167
JOE WRIGHT 10120 4.4 6.4 69 9.0 7.5 120
NORTH FRENCH CREEK 10100 8.2 6.4 128 10.5 5.8 181
OLD BATTLE 10000 6.9 8.5 81 10.7 8.4 127
SOUTH BRUSH CREEK 8400 3.4 2.4 142 8.6 5.0 172
TOWER 10500 11.0 13.2 83 11.2 9.5 118
WEBBER SPRINGS 9200 3.7 6.7 55 7.9 8.1 98
WILLOW CREEK PASS 9540 3.9 3.1 126 5.4 3.8 142
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Basin wide percent of average 84 134
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.0 6.7 60 6.3 5.1 124
CASPER MTN. 7900 3.0 4.5 67 8.6 5.0 172
DEADMAN HILL 10220 5.1 4.3 119 6.2 4.9 127
DEER PARK 9700 4.7 -M * 6.7 -M *
LAPRELE CREEK 8320 .4 2.7 15 6.2 3.2 194
RENO HILL 8400 4.6 3.8 121 8.8 6.3 140
ROACH 9700 3.3 4.3 77 5.7 6.0 95
SAND LAKE 10080 9.3 8.6 108 10.7 5.8 184
SOUTH PASS 9040 4.2 5.1 82 5.9 5.1 116
WINDY PEAK 7840 .7 2.0 35 6.4 2.6 246
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Basin wide percent of average 82 147
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.6 2.4 67 6.2 4.4 141
DIVIDE PEAK 8800 4.1 5.5 75 10.0 6.5 154
OLD BATTLE 10000 6.9 8.5 81 10.7 8.4 127
SANDSTONE RS 8150 1.4 3.0 47 7.2 5.0 144
WHISKEY PARK 8950 4.3 6.7 64 9.6 5.9 163
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Basin wide percent of average 70 145
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.8 3.0 127 3.9 4.5 87
BLIND BULL SUM 8650 4.9 7.1 69 5.3 6.0 88
EAST RIM DIVIDE 7930 1.9 1.4 136* 2.9 4.2 69
ELKHART PARK G.S. 9400 3.1 3.0 103 4.0 4.5 89
GROS VENTRE SUMMIT 8775 4.0 3.5 114 4.6 4.5 102
KENDALL R.S. 7740 2.5 2.3 109 3.3 4.3 77
LOOMIS PARK 8240 2.5 3.1 81 3.8 5.3 72
NEW FORK LAKE 8340 2.0 2.0 100 2.9 4.0 72
SNIDER BASIN 8250 2.1 2.6 81 3.0 4.2 71
SPRING CREEK DIVIDE 9000 4.5 5.6 80 5.6 7.1 79
TRIPLE PEAK 8500 4.4 5.1 86 6.0 8.6 70
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Basin wide percent of average 92 79
LOWER GREEN RIVER
HAMS FORK 7840 1.2 1.6 75 2.8 3.7 76
HEWINTA 9500 1.4 2.2 64 4.2 4.3 98
HICKERSON PARK 9150 1.4 1.6 88 4.0 3.5 114
HOLE-IN-ROCK 9150 1.0 1.3 77 4.4 3.5 126
INDIAN CREEK 9425 4.7 5.8 81 4.9 7.0 70
KELLEY R.S. 8180 2.2 3.1 71 3.8 5.3 72
STEEL CREEK PARK 10100 3.6 4.8 75 5.5 4.5 122
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Basin wide percent of average 76 93
UPPER BEAR RIVER
BUG LAKE 7950 -M 4.7 * -M 6.3 *
HAYDEN FORK 9400 2.6 3.5 74 5.5 5.3 104
KELLEY R.S. 8180 2.2 3.1 71 3.8 5.3 72
LILY LAKE 9050 3.6 3.4 106 5.8 4.8 121
MONTE CRISTO 8960 4.3 5.8 74 6.9 7.6 91
SALT RIVER SUMMIT 7600 1.5 2.1 71 3.9 4.7 83
TRIAL LAKE 9960 3.5 5.7 61 5.0 6.9 72
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Basin wide percent of average 75 89
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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.