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 13 , 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 1.1 1.9 58 2.3 3.8 61
COTTONWOOD CREEK 7600 1.2 2.2 55* 4.4 4.1 107
GRANITE CREEK 6770 .8 1.8 44* 1.7 4.1 41
GRASSY LAKE 7265 2.2 3.2 69* 3.9 6.2 63
GROS VENTRE SUMMIT 8775 2.2 2.2 100 3.2 2.8 114
LEWIS LAKE DIVIDE 7860 2.2 3.5 63* 3.5 6.3 56
PHILLIPS BENCH 8200 1.7 2.7 63* 2.3 4.8 48
SALT RIVER SUMMIT 7600 .8 .9 89* 2.7 3.0 90
SNAKE RIVER STATION 6920 1.1 1.9 58 2.5 4.3 58
SPRING CREEK DIVIDE 9000 1.8 3.4 53 3.4 4.3 79
THUMB DIVIDE 7980 1.8 1.7 106* 2.2 3.5 63
TOGWOTEE PASS 9580 3.9 3.8 103 4.3 4.7 91
TWO OCEAN PLATEAU 9360 4.0 5.1 78 3.6 5.2 69
WILLOW CREEK 8450 1.9 3.1 61* 6.1 5.3 115
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Basin wide percent of average 71* 74
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.3 4.6 50 2.1 3.2 66
BLACK BEAR 7950 3.8 4.9 78 4.4 6.1 72
CANYON 7940 1.0 1.6 62 1.4 2.8 50
FISHER CREEK 9100 2.7 4.8 56 2.9 5.5 53
MADISON PLATEAU 7750 -M 2.9 * 2.8 4.3 65
NORTHEAST ENTRANCE 7350 .5 .9 56* 1.6 2.4 67
PARKER PEAK 9400 2.8 5.2 54 1.1 3.3 33
SYLVAN LAKE 8420 3.5 4.1 85 5.0 4.2 119
THUMB DIVIDE 7980 1.8 1.7 106* 2.2 3.5 63
TWO OCEAN PLATEAU 9360 4.0 5.1 78 3.6 5.2 69
WHISKEY CREEK 6800 1.3 1.7 76* 2.2 3.6 61
WHITE MILL 8700 1.7 3.4 50 2.2 4.6 48
WOLVERINE 7650 .5 1.1 45* 2.1 2.6 81
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Basin wide percent of average 66 65
WIND RIVER
BURROUGHS CREEK 8750 1.9 1.9 100 2.6 3.0 87
COLD SPRINGS 9630 2.6 1.7 153 4.0 2.7 148
DEER PARK 9700 4.8 -M * 6.0 -M *
HOBBS PARK 10100 5.0 3.5 143 6.0 3.0 200
LITTLE WARM 9620 1.7 1.9 89 2.9 2.9 100
SOUTH PASS 9040 3.7 3.7 100 5.6 3.4 165
ST. LAWRENCE ALT 8620 2.6 1.2 217 5.0 2.5 200
TOGWOTEE PASS 9580 3.9 3.8 103 4.3 4.7 91
TOWNSEND CREEK 8700 3.3 1.7 194 5.7 2.7 211
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Basin wide percent of average 127 145
BIGHORN BASIN
BALD MTN. 9375 4.2 4.0 105 4.5 3.4 132
BEAR TRAP MEADOW 7900 1.7 1.3 131 4.6 2.2 209
BLACKWATER 9780 4.0 4.0 100 4.0 3.7 108
BONE SPRINGS DIV 9350 3.2 3.6 89 3.8 3.1 123
EVENING STAR 9200 1.6 5.9 27 2.8 4.5 62
GRAVE SPRINGS 8550 1.9 -M * 5.0 2.6 192
KIRWIN 9550 3.1 2.3 135 3.3 2.4 138
LOST CREEK 8080 .0 2.2 0 .0 2.8 0
MARQUETTE 8760 3.6 1.5 240 4.6 2.5 184
MIDDLE POWDER 7760 1.8 2.3 78 7.8 2.9 269
OWL CREEK 8975 2.5 .8 312 3.4 1.4 243
POWDER RIVER PASS 9480 1.7 2.1 81 3.7 2.7 137
SHELL CREEK 9580 3.7 3.4 109 3.5 2.8 125
SYLVAN LAKE 8420 3.5 4.1 85 5.0 4.2 119
SYLVAN ROAD 8120 1.2 2.4 50 1.8 3.4 53
TIMBER CREEK 7950 2.5 .6 417* 4.0 1.8 222
YOUNTS PEAK 8350 2.5 3.6 69 2.1 3.1 68
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Basin wide percent of average 93 129
SHOSHONE RIVER
BLACKWATER 9780 4.0 4.0 100 4.0 3.7 108
EVENING STAR 9200 1.6 5.9 27 2.8 4.5 62
KIRWIN 9550 3.1 2.3 135 3.3 2.4 138
MARQUETTE 8760 3.6 1.5 240 4.6 2.5 184
SYLVAN LAKE 8420 3.5 4.1 85 5.0 4.2 119
SYLVAN ROAD 8120 1.2 2.4 50 1.8 3.4 53
YOUNTS PEAK 8350 2.5 3.6 69 2.1 3.1 68
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Basin wide percent of average 82 99
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.7 1.3 131 4.6 2.2 209
BONE SPRINGS DIV 9350 3.2 3.6 89 3.8 3.1 123
BURGESS JUNCTION 7880 1.8 2.5 72 4.1 2.7 152
CLOUD PEAK RESERVOIR 9860 2.8 2.1 133 5.2 3.0 173
DOME LAKE 8880 2.1 2.8 75 3.5 3.3 106
GRAVE SPRINGS 8550 1.9 -M * 5.0 2.6 192
HANSEN SAWMILL 8760 1.4 1.3 108 3.2 2.2 145
LOST CREEK 8080 .0 2.2 0 .0 2.8 0
MIDDLE POWDER 7760 1.8 2.3 78 7.8 2.9 269
POWDER RIVER PASS 9480 1.7 2.1 81 3.7 2.7 137
SUCKER CREEK 8880 2.9 1.8 161 4.7 3.0 157
TIE CREEK 6870 1.3 -M * 3.2 2.6 123
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Basin wide percent of average 88 147
BELLE FOURCHE
BLIND PARK 6890 1.0 2.3 43 7.2 2.4 300
NORTH RAPID CREEK 6130 1.1 -M * 7.5 -M *
WARREN PEAK 6520 1.0 2.3 43 7.4 1.9 389
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Basin wide percent of average 43 340
UPPER N. PLATTE RIVER
COLUMBINE 9400 2.4 2.9 83 5.3 4.0 132
DIVIDE PEAK 8800 3.1 3.6 86 8.3 4.5 184
ELK RIVER 8700 1.5 1.4 107* 7.2 3.4 212
JOE WRIGHT 10120 4.4 4.7 94 8.5 5.2 163
NORTH FRENCH CREEK 10100 7.1 4.3 165 9.6 3.8 253
OLD BATTLE 10000 5.5 5.7 96 8.9 5.4 165
SOUTH BRUSH CREEK 8400 3.4 1.3 262* 8.3 3.5 237
TOWER 10500 9.0 9.3 97 10.1 6.4 158
WEBBER SPRINGS 9200 2.8 4.0 70 6.5 5.2 125
WILLOW CREEK PASS 9540 3.4 1.9 179 4.4 2.6 169
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Basin wide percent of average 109 175
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.9 4.0 72 5.3 3.6 147
CASPER MTN. 7900 2.6 2.6 100 8.5 3.6 236
DEADMAN HILL 10220 4.8 2.6 185 5.5 3.5 157
DEER PARK 9700 4.8 -M * 6.0 -M *
LAPRELE CREEK 8320 .3 1.7 18 5.9 2.2 268
RENO HILL 8400 4.4 2.6 169 8.4 4.1 205
ROACH 9700 2.8 2.8 100 5.1 4.1 124
SAND LAKE 10080 7.8 5.7 137 9.5 4.0 238
SOUTH PASS 9040 3.7 3.7 100 5.6 3.4 165
WINDY PEAK 7840 .3 1.1 27 5.9 1.8 328
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Basin wide percent of average 110 197
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.2 1.3 92 5.7 2.9 197
DIVIDE PEAK 8800 3.1 3.6 86 8.3 4.5 184
OLD BATTLE 10000 5.5 5.7 96 8.9 5.4 165
SANDSTONE RS 8150 .9 1.7 53 6.3 3.1 203
WHISKEY PARK 8950 3.3 4.2 79 8.2 3.6 228
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Basin wide percent of average 85 192
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.0 1.7 176 3.4 2.8 121
BLIND BULL SUM 8650 1.8 4.4 41 3.1 3.7 84
EAST RIM DIVIDE 7930 1.0 1.3 77* 2.0 2.7 74
ELKHART PARK G.S. 9400 2.5 1.8 139 3.3 2.8 118
GROS VENTRE SUMMIT 8775 2.2 2.2 100 3.2 2.8 114
KENDALL R.S. 7740 1.3 1.0 130* 2.1 2.7 78
LOOMIS PARK 8240 1.1 1.6 69* 2.5 3.3 76
NEW FORK LAKE 8340 1.3 .8 162* 2.0 2.5 80
SNIDER BASIN 8250 .6 1.1 55* 1.9 2.7 70
SPRING CREEK DIVIDE 9000 1.8 3.4 53 3.4 4.3 79
TRIPLE PEAK 8500 1.5 2.8 54 3.0 5.3 57
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Basin wide percent of average 82 84
LOWER GREEN RIVER
HAMS FORK 7840 .6 .6 100* 2.4 2.3 104
HEWINTA 9500 .1 1.1 9* 3.7 3.2 116
HICKERSON PARK 9150 2.3 1.1 209 3.8 2.7 141
HOLE-IN-ROCK 9150 .6 .7 86 4.2 2.7 156
INDIAN CREEK 9425 2.5 3.5 71 3.2 4.3 74
KELLEY R.S. 8180 1.1 1.5 73* 2.6 3.3 79
STEEL CREEK PARK 10100 2.6 3.0 87 4.6 3.3 139
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Basin wide percent of average 85 112
UPPER BEAR RIVER
BUG LAKE 7950 .4 2.2 18 2.9 4.6 63
HAYDEN FORK 9400 1.6 1.9 84 4.1 3.7 111
KELLEY R.S. 8180 1.1 1.5 73* 2.6 3.3 79
LILY LAKE 9050 2.3 1.8 128 4.9 3.6 136
MONTE CRISTO 8960 1.9 2.8 68* 4.5 5.3 85
SALT RIVER SUMMIT 7600 .8 .9 89* 2.7 3.0 90
TRIAL LAKE 9960 2.6 3.5 74 4.2 4.6 91
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Basin wide percent of average 73 92
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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.