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: NOVEMBER 20 , 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 1.6 2.7 59 2.9 4.9 59
COTTONWOOD CREEK 7600 2.4 3.0 80 5.6 5.2 108
GRANITE CREEK 6770 .9 2.4 38 2.0 5.2 38
GRASSY LAKE 7265 3.7 4.6 80 5.5 7.9 70
GROS VENTRE SUMMIT 8775 2.2 2.8 79 3.3 3.6 92
LEWIS LAKE DIVIDE 7860 3.5 4.8 73 4.7 8.0 59
PHILLIPS BENCH 8200 2.4 3.7 65 3.1 6.1 51
SALT RIVER SUMMIT 7600 1.1 1.4 79* 3.2 3.7 86
SNAKE RIVER STATION 6920 1.6 2.6 62 3.1 5.5 56
SPRING CREEK DIVIDE 9000 2.4 4.4 55 4.0 5.5 73
THUMB DIVIDE 7980 2.0 2.4 83 2.5 4.5 56
TOGWOTEE PASS 9580 4.5 4.6 98 4.8 5.9 81
TWO OCEAN PLATEAU 9360 4.8 6.2 77 4.4 6.7 66
WILLOW CREEK 8450 3.4 4.2 81 8.0 6.7 119
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Basin wide percent of average 73 72
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.9 5.5 53 2.5 3.9 64
BLACK BEAR 7950 5.1 6.2 82 5.8 7.6 76
CANYON 7940 1.3 2.0 65 1.9 3.4 56
FISHER CREEK 9100 4.1 6.3 65 4.2 6.9 61
MADISON PLATEAU 7750 -M 3.8 * 3.5 5.3 66
NORTHEAST ENTRANCE 7350 .8 1.3 62 2.1 2.9 72
PARKER PEAK 9400 3.2 6.0 53 -M 4.0 *
SYLVAN LAKE 8420 4.4 5.1 86 6.0 5.1 118
THUMB DIVIDE 7980 2.0 2.4 83 2.5 4.5 56
TWO OCEAN PLATEAU 9360 4.8 6.2 77 4.4 6.7 66
WHISKEY CREEK 6800 1.7 2.5 68 2.6 4.4 59
WHITE MILL 8700 2.8 4.5 62 3.2 5.7 56
WOLVERINE 7650 .8 1.5 53 2.4 3.2 75
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Basin wide percent of average 68 69
WIND RIVER
BURROUGHS CREEK 8750 2.1 2.6 81 2.7 3.8 71
COLD SPRINGS 9630 2.5 2.1 119 3.9 3.2 122
DEER PARK 9700 4.8 -M * 6.0 -M *
HOBBS PARK 10100 4.8 4.1 117 6.0 3.5 171
LITTLE WARM 9620 2.0 2.4 83 2.8 3.5 80
SOUTH PASS 9040 3.7 4.3 86 5.6 4.2 133
ST. LAWRENCE ALT 8620 2.5 1.5 167 5.0 3.0 167
TOGWOTEE PASS 9580 4.5 4.6 98 4.8 5.9 81
TOWNSEND CREEK 8700 2.9 2.1 138 5.4 3.2 169
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Basin wide percent of average 105 119
BIGHORN BASIN
BALD MTN. 9375 4.6 4.8 96 4.6 4.1 112
BEAR TRAP MEADOW 7900 1.8 1.6 112 4.7 2.6 181
BLACKWATER 9780 4.9 4.7 104 5.1 4.4 116
BONE SPRINGS DIV 9350 3.4 4.2 81 3.9 3.6 108
EVENING STAR 9200 2.7 7.0 39 4.1 5.4 76
GRAVE SPRINGS 8550 1.8 -M * 5.1 3.0 170
KIRWIN 9550 2.8 2.7 104 3.2 2.9 110
MARQUETTE 8760 3.5 1.9 184 4.3 2.9 148
MIDDLE POWDER 7760 1.7 2.8 61 7.8 3.4 229
OWL CREEK 8975 2.3 .9 256 3.0 1.6 188
POWDER RIVER PASS 9480 1.7 2.5 68 3.7 3.1 119
SHELL CREEK 9580 4.1 4.0 102 3.7 3.3 112
SYLVAN LAKE 8420 4.4 5.1 86 6.0 5.1 118
SYLVAN ROAD 8120 1.9 2.8 68 2.7 4.1 66
TIMBER CREEK 7950 2.5 .9 278 4.1 2.1 195
YOUNTS PEAK 8350 2.8 4.3 65 2.4 3.9 62
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Basin wide percent of average 90 123
SHOSHONE RIVER
BLACKWATER 9780 4.9 4.7 104 5.1 4.4 116
EVENING STAR 9200 2.7 7.0 39 4.1 5.4 76
KIRWIN 9550 2.8 2.7 104 3.2 2.9 110
MARQUETTE 8760 3.5 1.9 184 4.3 2.9 148
SYLVAN LAKE 8420 4.4 5.1 86 6.0 5.1 118
SYLVAN ROAD 8120 1.9 2.8 68 2.7 4.1 66
YOUNTS PEAK 8350 2.8 4.3 65 2.4 3.9 62
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Basin wide percent of average 81 97
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.8 1.6 112 4.7 2.6 181
BIG GOOSE 7990 1.6 -M * 4.5 -M *
BONE SPRINGS DIV 9350 3.4 4.2 81 3.9 3.6 108
BURGESS JUNCTION 7880 1.6 2.9 55 4.1 3.1 132
CLOUD PEAK RESERVOIR 9860 2.9 2.6 112 4.7 3.5 134
DOME LAKE 8880 2.0 3.2 62 3.6 3.8 95
GRAVE SPRINGS 8550 1.8 -M * 5.1 3.0 170
HANSEN SAWMILL 8760 1.4 1.6 88 3.2 2.5 128
MIDDLE POWDER 7760 1.7 2.8 61 7.8 3.4 229
POWDER RIVER PASS 9480 1.7 2.5 68 3.7 3.1 119
SUCKER CREEK 8880 2.8 2.2 127 4.4 3.5 126
TIE CREEK 6870 .7 -M * 3.2 3.0 107
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Basin wide percent of average 82 138
BELLE FOURCHE
BLIND PARK 6890 1.0 2.7 37 7.3 2.7 270
NORTH RAPID CREEK 6130 1.0 -M * 7.6 -M *
WARREN PEAK 6520 1.0 2.7 37 7.5 2.2 341
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Basin wide percent of average 37 302
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.1 3.7 84 5.9 4.8 123
DIVIDE PEAK 8800 4.0 4.4 91 9.4 5.4 174
ELK RIVER 8700 1.8 2.2 82 7.8 4.1 190
JOE WRIGHT 10120 4.2 5.5 76 8.8 6.2 142
NORTH FRENCH CREEK 10100 8.1 5.3 153 10.5 4.7 223
OLD BATTLE 10000 7.0 6.9 101 10.3 6.7 154
SOUTH BRUSH CREEK 8400 3.5 1.7 206 8.4 4.1 205
TOWER 10500 10.7 11.0 97 11.0 7.7 143
WEBBER SPRINGS 9200 3.6 5.2 69 7.6 6.5 117
WILLOW CREEK PASS 9540 3.6 2.4 150 4.4 3.1 142
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Basin wide percent of average 103 158
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.9 5.2 75 6.2 4.2 148
CASPER MTN. 7900 2.7 3.4 79 8.4 4.2 200
DEADMAN HILL 10220 4.6 3.3 139 6.0 4.1 146
DEER PARK 9700 4.8 -M * 6.0 -M *
LAPRELE CREEK 8320 .5 2.1 24 6.0 2.6 231
RENO HILL 8400 4.6 3.1 148 8.5 5.1 167
ROACH 9700 3.3 3.5 94 5.7 4.9 116
SAND LAKE 10080 9.2 7.0 131 10.5 4.8 219
SOUTH PASS 9040 3.7 4.3 86 5.6 4.2 133
WINDY PEAK 7840 .7 1.6 44 6.1 2.2 277
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Basin wide percent of average 99 174
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.6 1.7 94 6.1 3.6 169
DIVIDE PEAK 8800 4.0 4.4 91 9.4 5.4 174
OLD BATTLE 10000 7.0 6.9 101 10.3 6.7 154
SANDSTONE RS 8150 1.4 2.3 61 7.1 3.9 182
WHISKEY PARK 8950 4.4 5.3 83 9.4 4.6 204
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Basin wide percent of average 89 175
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.0 2.3 130 3.4 3.6 94
BLIND BULL SUM 8650 2.4 5.6 43 3.5 4.7 74
EAST RIM DIVIDE 7930 1.1 1.4 79* 2.1 3.3 64
ELKHART PARK G.S. 9400 2.5 2.3 109 3.4 3.6 94
GROS VENTRE SUMMIT 8775 2.2 2.8 79 3.3 3.6 92
KENDALL R.S. 7740 1.4 1.6 88 2.1 3.4 62
LOOMIS PARK 8240 1.4 2.3 61 2.7 4.1 66
NEW FORK LAKE 8340 1.3 1.3 100 1.9 3.2 59
SNIDER BASIN 8250 .9 1.8 50 2.1 3.3 64
SPRING CREEK DIVIDE 9000 2.4 4.4 55 4.0 5.5 73
TRIPLE PEAK 8500 2.4 3.8 63 4.0 6.7 60
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Basin wide percent of average 71 72
LOWER GREEN RIVER
HAMS FORK 7840 .8 1.0 80* 2.6 2.9 90
HEWINTA 9500 .4 1.6 25 4.1 3.7 111
HICKERSON PARK 9150 1.0 1.3 77 4.0 3.1 129
HOLE-IN-ROCK 9150 .9 1.0 90 4.3 3.1 139
INDIAN CREEK 9425 3.2 4.5 71 3.5 5.5 64
KELLEY R.S. 8180 1.6 2.2 73 3.1 4.1 76
STEEL CREEK PARK 10100 3.0 3.8 79 4.9 3.8 129
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Basin wide percent of average 71 101
UPPER BEAR RIVER
BUG LAKE 7950 1.1 3.2 34 3.4 5.3 64
HAYDEN FORK 9400 2.3 2.6 88 4.5 4.4 102
KELLEY R.S. 8180 1.6 2.2 73 3.1 4.1 76
LILY LAKE 9050 3.0 2.4 125 5.5 4.2 131
MONTE CRISTO 8960 2.9 4.0 72 5.7 6.3 90
SALT RIVER SUMMIT 7600 1.1 1.4 79* 3.2 3.7 86
TRIAL LAKE 9960 3.1 4.5 69 4.9 5.6 88
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Basin wide percent of average 74 90
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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.