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: APRIL 3 , 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 15.9 17.5 91 20.4 23.0 89
COTTONWOOD CREEK 7600 21.0 24.3 86 24.0 25.9 93
GRANITE CREEK 6770 16.7 18.7 89 21.1 24.2 87
GRASSY LAKE 7265 30.6 36.5 84 33.6 38.4 88
GROS VENTRE SUMMIT 8775 11.8 15.8 75 13.0 16.4 79
LEWIS LAKE DIVIDE 7860 30.5 35.9 85 32.0 39.0 82
PHILLIPS BENCH 8200 26.7 29.6 90 26.4 30.8 86
SALT RIVER SUMMIT 7600 15.3 14.4 106 18.6 17.4 107
SNAKE RIVER STATION 6920 16.6 18.8 88 21.3 26.9 79
SPRING CREEK DIVIDE 9000 21.7 28.5 76 22.1 28.3 78
THUMB DIVIDE 7980 16.0 17.2 93 17.4 21.5 81
TOGWOTEE PASS 9580 25.5 25.5 100 23.9 29.2 82
TWO OCEAN PLATEAU 9360 27.6 26.8 103 27.1 31.6 86
WILLOW CREEK 8450 28.1 30.7 92 32.1 33.1 97
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Basin wide percent of average 89 86
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.4 24.0 81 16.9 18.4 92
BLACK BEAR 7950 39.0 38.7 101 35.7 41.6 86
CANYON 7940 12.7 13.2 96 14.8 14.5 102
FISHER CREEK 9100 30.8 36.4 85 26.3 37.4 70
MADISON PLATEAU 7750 21.1 24.9 85 22.9 26.9 85
NORTHEAST ENTRANCE 7350 6.5 9.2 71 12.0 12.0 100
PARKER PEAK 9400 19.0 22.0 86 16.5 15.9 104
SYLVAN LAKE 8420 17.8 22.5 79 20.6 19.5 106
THUMB DIVIDE 7980 16.0 17.2 93 17.4 21.5 81
TWO OCEAN PLATEAU 9360 27.6 26.8 103 27.1 31.6 86
WHISKEY CREEK 6800 14.5 17.6 82 18.8 22.4 84
WHITE MILL 8700 23.4 25.2 93 21.5 29.0 74
WOLVERINE 7650 9.3 11.7 79 10.2 13.0 78
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Basin wide percent of average 89 86
WIND RIVER
BURROUGHS CREEK 8750 15.2 15.0 101 16.7 16.9 99
COLD SPRINGS 9630 11.4 8.4 136 12.4 10.8 115
DEER PARK 9700 -M -M * 21.1 -M *
HOBBS PARK 10100 15.8 15.3 103 14.2 14.4 99
LITTLE WARM 9620 11.1 11.9 93 13.5 13.5 100
SOUTH PASS 9040 15.9 16.6 96 17.8 17.3 103
ST. LAWRENCE ALT 8620 -M 7.5 * 10.4 10.4 100
TOGWOTEE PASS 9580 25.5 25.5 100 23.9 29.2 82
TOWNSEND CREEK 8700 12.1 10.0 121 14.3 12.7 113
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Basin wide percent of average 104 98
BIGHORN BASIN
BALD MTN. 9375 19.1 20.8 92 16.7 17.6 95
BEAR TRAP MEADOW 7900 6.5 7.2 90 7.5 8.4 89
BLACKWATER 9780 20.7 22.7 91 18.5 18.3 101
BONE SPRINGS DIV 9350 16.6 16.7 99 15.9 15.3 104
EVENING STAR 9200 23.1 27.5 84 25.0 22.9 109
GRAVE SPRINGS 8550 9.5 -M * 10.0 9.8 102
KIRWIN 9550 12.9 10.2 126 13.9 11.0 126
MARQUETTE 8760 13.1 8.2 160 13.4 9.8 137
MIDDLE POWDER 7760 10.9 12.4 88 10.6 12.0 88
OWL CREEK 8975 7.7 4.6 167 7.1 6.3 113
POWDER RIVER PASS 9480 11.1 11.0 101 11.9 11.7 102
SHELL CREEK 9580 13.9 15.2 91 10.7 13.3 80
SYLVAN LAKE 8420 17.8 22.5 79 20.6 19.5 106
SYLVAN ROAD 8120 10.4 12.3 85 14.5 16.4 88
TIMBER CREEK 7950 8.8 6.3 140 10.5 7.2 146
YOUNTS PEAK 8350 14.7 17.4 84 14.9 16.9 88
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Basin wide percent of average 96 102
SHOSHONE RIVER
BLACKWATER 9780 20.7 22.7 91 18.5 18.3 101
EVENING STAR 9200 23.1 27.5 84 25.0 22.9 109
KIRWIN 9550 12.9 10.2 126 13.9 11.0 126
MARQUETTE 8760 13.1 8.2 160 13.4 9.8 137
SYLVAN LAKE 8420 17.8 22.5 79 20.6 19.5 106
SYLVAN ROAD 8120 10.4 12.3 85 14.5 16.4 88
YOUNTS PEAK 8350 14.7 17.4 84 14.9 16.9 88
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Basin wide percent of average 93 105
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.5 7.2 90 7.5 8.4 89
BONE SPRINGS DIV 9350 16.6 16.7 99 15.9 15.3 104
BURGESS JUNCTION 7880 10.6 12.0 88 11.7 11.7 100
CLOUD PEAK RESERVOIR 9860 14.4 15.2 95 14.6 13.6 107
DOME LAKE 8880 11.0 13.9 79 13.1 13.4 98
GRAVE SPRINGS 8550 9.5 -M * 10.0 9.8 102
HANSEN SAWMILL 8760 7.7 7.2 107 9.4 8.1 116
MIDDLE POWDER 7760 10.9 12.4 88 10.6 12.0 88
POWDER RIVER PASS 9480 11.1 11.0 101 11.9 11.7 102
SUCKER CREEK 8880 11.8 12.4 95 13.4 13.3 101
TIE CREEK 6870 7.0 -M * 12.3 11.2 110
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Basin wide percent of average 93 101
BELLE FOURCHE
BLIND PARK 6890 8.7 11.2 78 12.9 10.3 125
NORTH RAPID CREEK 6130 10.2 -M * 10.5 -M *
WARREN PEAK 6520 12.5 11.2 112 10.8 8.2 132
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Basin wide percent of average 95 128
UPPER N. PLATTE RIVER
COLUMBINE 9400 21.2 24.8 85 22.0 24.7 89
DIVIDE PEAK 8800 19.8 21.4 93 20.4 23.1 88
ELK RIVER 8700 16.6 20.1 83 18.5 19.4 95
JOE WRIGHT 10120 20.1 22.4 90 23.1 25.4 91
NORTH FRENCH CREEK 10100 -M 26.0 * 28.8 23.8 121
OLD BATTLE 10000 31.4 32.7 96 34.6 30.6 113
SOUTH BRUSH CREEK 8400 9.1 13.3 68 12.5 16.6 75
TOWER 10500 45.1 45.9 98 37.5 36.7 102
WEBBER SPRINGS 9200 19.8 28.3 70 25.1 25.6 98
WILLOW CREEK PASS 9540 7.4 12.2 61 7.3 12.8 57
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Basin wide percent of average 86 96
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.7 26.8 81 21.0 19.7 107
CASPER MTN. 7900 12.7 16.9 75 12.6 14.3 88
DEADMAN HILL 10220 14.8 16.8 88 14.2 17.0 84
DEER PARK 9700 -M -M * 21.1 -M *
LAPRELE CREEK 8320 9.5 10.5 90 11.3 12.0 94
RENO HILL 8400 12.3 14.6 84 11.8 19.4 61
ROACH 9700 14.7 17.5 84 16.8 21.4 79
SAND LAKE 10080 26.8 33.5 80 23.5 20.6 114
SOUTH PASS 9040 15.9 16.6 96 17.8 17.3 103
WINDY PEAK 7840 7.4 8.9 83 9.3 9.7 96
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Basin wide percent of average 84 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.4 11.2 111 15.7 15.5 101
DIVIDE PEAK 8800 19.8 21.4 93 20.4 23.1 88
OLD BATTLE 10000 31.4 32.7 96 34.6 30.6 113
SANDSTONE RS 8150 14.8 15.0 99 19.4 18.9 103
WHISKEY PARK 8950 28.2 29.2 97 27.7 28.6 97
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Basin wide percent of average 97 101
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.1 14.8 82 11.5 16.7 69
BLIND BULL SUM 8650 24.4 30.0 81 19.3 24.8 78
EAST RIM DIVIDE 7930 12.5 14.1 89 12.6 15.6 81
ELKHART PARK G.S. 9400 12.8 14.1 91 13.3 16.4 81
GROS VENTRE SUMMIT 8775 11.8 15.8 75 13.0 16.4 79
KENDALL R.S. 7740 14.1 14.5 97 15.0 16.0 94
LOOMIS PARK 8240 12.6 17.5 72 17.2 19.4 89
NEW FORK LAKE 8340 11.3 11.2 101 10.8 14.9 72
SNIDER BASIN 8250 12.6 15.0 84 12.9 15.6 83
SPRING CREEK DIVIDE 9000 21.7 28.5 76 22.1 28.3 78
TRIPLE PEAK 8500 21.7 26.0 83 22.6 31.9 71
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Basin wide percent of average 83 79
LOWER GREEN RIVER
HAMS FORK 7840 10.8 11.4 95 11.8 13.8 86
HEWINTA 9500 11.2 11.1 101 15.2 13.3 114
HICKERSON PARK 9150 12.1 6.9 175 13.1 9.7 135
HOLE-IN-ROCK 9150 9.2 6.5 142 11.3 9.7 116
INDIAN CREEK 9425 25.1 29.2 86 20.2 26.8 75
KELLEY R.S. 8180 15.9 17.3 92 16.8 19.3 87
STEEL CREEK PARK 10100 16.7 16.8 99 18.6 13.0 143
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Basin wide percent of average 102 101
UPPER BEAR RIVER
BUG LAKE 7950 20.0 21.1 95 21.2 19.8 107
HAYDEN FORK 9400 13.1 15.7 83 20.4 19.4 105
KELLEY R.S. 8180 15.9 17.3 92 16.8 19.3 87
LILY LAKE 9050 14.9 13.3 112 17.9 15.0 119
MONTE CRISTO 8960 30.2 29.8 101 27.0 26.0 104
SALT RIVER SUMMIT 7600 15.3 14.4 106 18.6 17.4 107
TRIAL LAKE 9960 21.1 25.1 84 23.1 24.3 95
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Basin wide percent of average 95 103
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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.