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 SATURDAY: MAY 10 , 2003
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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 6.9 8.6 80 24.5 25.2 97
COTTONWOOD CREEK 7600 14.2 16.0 89 27.8 33.0 84
GRANITE CREEK 6770 2.0 9.6 21 18.6 23.1 81
GRASSY LAKE 7265 30.0 29.0 103 38.9 42.1 92
GROS VENTRE SUMMIT 8775 9.4 11.1 85 13.7 16.0 86
LEWIS LAKE DIVIDE 7860 32.0 31.0 103 34.9 42.7 82
PHILLIPS BENCH 8200 -M 26.0 * -M 34.1 *
SALT RIVER SUMMIT 7600 2.2 6.9 32 15.9 22.3 71
SNAKE RIVER STATION 6920 2.4 8.0 30 24.6 26.3 94
SPRING CREEK DIVIDE 9000 -M 26.1 * -M 31.0 *
THUMB DIVIDE 7980 11.3 11.6 97 20.8 22.8 91
TOGWOTEE PASS 9580 25.8 27.6 93 27.4 30.1 91
TWO OCEAN PLATEAU 9360 37.6 31.1 121 30.6 33.3 92
WILLOW CREEK 8450 24.4 27.2 90 39.8 39.1 102
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Basin wide percent of average 91 89
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 30.5 25.6 119 26.7 24.5 109
BLACK BEAR 8170 41.1 37.7 109 39.7 47.1 84
CANYON 8090 12.8 8.6 149 18.6 18.5 101
FISHER CREEK 9100 41.7 37.0 113 39.9 43.3 92
MADISON PLATEAU 7750 21.6 21.2 102 26.8 31.5 85
NORTHEAST ENTRANCE 7350 2.3 4.7 49 16.2 15.6 104
PARKER PEAK 9400 29.8 24.2 123 24.8 20.6 120
SYLVAN LAKE 8420 23.2 21.6 107 29.1 25.9 112
THUMB DIVIDE 7980 11.3 11.6 97 20.8 22.8 91
TWO OCEAN PLATEAU 9360 37.6 31.1 121 30.6 33.3 92
WHISKEY CREEK 6800 10.7 11.7 91 21.3 25.1 85
WHITE MILL 8700 31.1 25.3 123 28.0 32.4 86
WOLVERINE 7650 1.3 4.6 28 14.5 16.1 90
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Basin wide percent of average 111 94
WIND RIVER
BURROUGHS CREEK 8750 16.5 11.5 143 21.5 20.3 106
COLD SPRINGS 9630 1.7 3.8 45 13.0 14.8 88
DEER PARK 9700 13.9 17.7 79 21.4 28.1 76
HOBBS PARK 10100 13.5 17.2 78 16.6 18.1 92
LITTLE WARM 9370 5.2 9.0 58 14.1 17.7 80
SOUTH PASS 9040 9.1 15.5 59 17.1 23.7 72
ST. LAWRENCE ALT 8620 1.7 4.6 37 11.5 13.0 88
TOGWOTEE PASS 9580 25.8 27.6 93 27.4 30.1 91
TOWNSEND CREEK 8700 3.9 6.9 57 15.4 16.5 93
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Basin wide percent of average 80 87
BIGHORN BASIN
BALD MTN. 9380 21.3 23.2 92 21.0 22.5 93
BEAR TRAP MEADOW 8200 2.0 1.3 154 12.0 11.9 101
BLACKWATER 9780 30.7 28.8 107 26.8 25.9 103
BONE SPRINGS DIV 9350 18.8 16.9 111 20.4 19.5 105
EVENING STAR 9200 33.8 32.8 103 37.6 31.2 121
GRAVE SPRINGS 8550 6.5 9.0 72 12.1 14.0 86
KIRWIN 9550 14.4 11.7 123 16.1 15.2 106
MARQUETTE 8760 -M 9.8 * -M 14.9 *
MIDDLE POWDER 7760 9.3 12.2 76 11.3 16.8 67
OWL CREEK 8975 1.5 2.9 52 8.9 9.0 99
POWDER RIVER PASS 9480 9.9 9.0 110 16.4 16.9 97
SHELL CREEK 9580 16.9 16.5 102 17.4 17.9 97
SYLVAN LAKE 8420 23.2 21.6 107 29.1 25.9 112
SYLVAN ROAD 7120 8.5 4.6 185 21.0 21.3 99
TIMBER CREEK 7950 4.7 3.1 152 12.3 11.6 106
YOUNTS PEAK 8350 16.4 16.4 100 18.7 19.8 94
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Basin wide percent of average 104 101
SHOSHONE RIVER
BLACKWATER 9780 30.7 28.8 107 26.8 25.9 103
EVENING STAR 9200 33.8 32.8 103 37.6 31.2 121
KIRWIN 9550 14.4 11.7 123 16.1 15.2 106
MARQUETTE 8760 -M 9.8 * -M 14.9 *
SYLVAN LAKE 8420 23.2 21.6 107 29.1 25.9 112
SYLVAN ROAD 7120 8.5 4.6 185 21.0 21.3 99
YOUNTS PEAK 8350 16.4 16.4 100 18.7 19.8 94
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Basin wide percent of average 110 107
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.0 1.3 154 12.0 11.9 101
BIG GOOSE 7990 11.5 10.0 115 17.4 13.9 125
BONE SPRINGS DIV 9350 18.8 16.9 111 20.4 19.5 105
BURGESS JUNCTION 7880 13.8 11.3 122 17.9 16.3 110
CLOUD PEAK RESERVOIR 9860 17.6 15.3 115 18.8 18.4 102
DOME LAKE 8880 12.2 11.5 106 19.6 17.9 109
GRAVE SPRINGS 8550 6.5 9.0 72 12.1 14.0 86
HANSEN SAWMILL 8360 3.4 3.2 106 14.2 11.9 119
MIDDLE POWDER 7760 9.3 12.2 76 11.3 16.8 67
POWDER RIVER PASS 9480 9.9 9.0 110 16.4 16.9 97
SUCKER CREEK 8880 15.1 11.2 135 20.8 18.6 112
TIE CREEK 6870 3.6 2.2 164 18.0 14.6 123
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Basin wide percent of average 109 104
BELLE FOURCHE
BLIND PARK 6890 .0 1.5 0 14.0 15.3 92
COLE CANYON 5910 .0 -M * 11.1 -M *
NORTH RAPID CREEK 6130 .0 1.7 0 12.2 12.2 100
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Basin wide percent of average 0 95
UPPER N. PLATTE RIVER
COLUMBINE 9400 18.3 15.9 115 30.7 30.1 102
DIVIDE PEAK 8800 19.4 15.1 128 27.0 25.2 107
ELK RIVER 8700 12.9 10.2 126 24.9 23.9 104
JOE WRIGHT 10120 32.5 24.3 134 37.8 31.5 120
NORTH FRENCH CREEK 10100 37.9 33.7 112 37.3 31.0 120
OLD BATTLE 10000 -M 36.0 * -M 41.1 *
SAGE CREEK BASIN 7850 .2 8.8 2 16.1 14.6 110
SOUTH BRUSH CREEK 8400 10.4 8.1 128 23.0 21.1 109
TOWER 10500 53.7 51.8 104 53.4 46.5 115
WEBBER SPRINGS 9200 17.4 20.6 84 30.8 32.1 96
WILLOW CREEK PASS 9540 22.5 12.3 183 20.9 16.6 126
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Basin wide percent of average 112 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.1 24.9 81 26.9 28.2 95
CASPER MTN. 7900 10.8 13.6 79 15.8 20.8 76
DEADMAN HILL 10220 20.4 18.6 110 24.8 22.1 112
DEER PARK 9700 13.9 17.7 79 21.4 28.1 76
LAPRELE CREEK 8320 4.9 4.8 102 16.0 17.5 91
RENO HILL 8400 14.0 11.5 122 19.8 21.5 92
ROACH 9700 17.9 15.2 118 24.9 23.6 106
SAND LAKE 10080 34.0 36.0 94 30.2 30.8 98
SOUTH PASS 9040 9.1 15.5 59 17.1 23.7 72
WINDY PEAK 7840 6.0 2.8 214 16.3 14.5 112
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Basin wide percent of average 94 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 2.0 5 20.0 19.3 104
DIVIDE PEAK 8800 19.4 15.1 128 27.0 25.2 107
OLD BATTLE 10000 -M 36.0 * -M 41.1 *
SANDSTONE RS 8150 4.3 5.8 74 23.7 22.7 104
WHISKEY PARK 8950 31.1 27.9 111 34.3 35.0 98
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Basin wide percent of average 108 103
UPPER GREEN RIVER
BIG SANDY OPENING 9100 8.7 10.6 82 14.4 16.7 86
BLIND BULL SUM 8650 23.0 26.0 88 19.6 26.0 75
EAST RIM DIVIDE 7930 6.7 10.6 63 11.7 14.5 81
ELKHART PARK G.S. 9400 9.6 10.6 91 14.4 16.9 85
GROS VENTRE SUMMIT 8775 9.4 11.1 85 13.7 16.0 86
KENDALL R.S. 7740 .0 6.0 0 14.4 17.2 84
LOOMIS PARK 8240 7.2 11.3 64 18.4 20.7 89
NEW FORK LAKE 8340 3.1 5.4 57 -M 14.1 *
SNIDER BASIN 8250 4.3 9.4 46 14.8 19.1 77
SPRING CREEK DIVIDE 9000 -M 26.1 * -M 31.0 *
TRIPLE PEAK 8500 15.7 19.5 81 30.0 29.6 101
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Basin wide percent of average 73 86
LOWER GREEN RIVER
HAMS FORK 7840 1.1 2.8 39 13.9 15.4 90
HEWINTA 9500 4.4 6.2 71 15.2 18.5 82
HICKERSON PARK 9150 1.0 3.4 29 11.1 10.9 102
HOLE-IN-ROCK 9150 -M 2.8 * 12.2 10.4 117
INDIAN CREEK 9425 22.6 25.3 89 23.1 30.4 76
KELLEY R.S. 8180 8.0 10.9 73 16.7 24.4 68
STEEL CREEK PARK 10100 18.0 18.3 98 17.9 21.1 85
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Basin wide percent of average 82 84
UPPER BEAR RIVER
BUG LAKE 7950 11.7 13.4 87 20.1 23.2 87
HAYDEN FORK 9400 5.3 9.3 57 22.0 26.1 84
KELLEY R.S. 8180 8.0 10.9 73 16.7 24.4 68
LILY LAKE 9050 3.5 8.0 44 18.3 22.0 83
MONTE CRISTO 8960 12.0 24.7 49 26.1 31.4 83
SALT RIVER SUMMIT 7600 2.2 6.9 32 15.9 22.3 71
TRIAL LAKE 9960 14.6 24.4 60 22.0 30.5 72
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Basin wide percent of average 59 78
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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 1971-2000.
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.