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: MARCH 26 , 1999
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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 23.0 17.4 132 26.8 22.3 120
COTTONWOOD CREEK 7600 23.9 23.5 102 26.7 25.0 107
GRANITE CREEK 6770 21.2 18.2 116 22.6 23.4 97
GRASSY LAKE 7265 41.8 35.1 119 39.9 37.0 108
GROS VENTRE SUMMIT 8775 15.2 15.3 99 14.8 15.9 93
LEWIS LAKE DIVIDE 7860 39.6 34.7 114 39.2 37.6 104
PHILLIPS BENCH 8200 31.6 28.6 110 30.9 29.7 104
SALT RIVER SUMMIT 7600 15.1 14.1 107 18.0 16.9 107
SNAKE RIVER STATION 6920 21.7 18.4 118 25.1 25.9 97
SPRING CREEK DIVIDE 9000 28.4 27.4 104 26.9 27.3 99
THUMB DIVIDE 7980 22.7 16.7 136 21.6 20.8 104
TOGWOTEE PASS 9580 -M 24.4 * 27.8 28.2 99
TWO OCEAN PLATEAU 9360 35.4 26.1 136 30.9 30.7 101
WILLOW CREEK 8450 33.2 29.8 111 37.0 32.1 115
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Basin wide percent of average 116 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 25.8 23.1 112 23.1 17.6 131
BLACK BEAR 7950 48.4 37.3 130 -M 39.8 *
CANYON 7940 17.6 12.7 139 18.4 14.0 131
FISHER CREEK 9100 39.0 35.0 111 36.1 35.9 101
MADISON PLATEAU 7750 -M 24.1 * 30.9 25.8 120
NORTHEAST ENTRANCE 7350 11.4 9.1 125 14.0 11.6 121
PARKER PEAK 9400 22.6 21.2 107 -M 15.2 *
SYLVAN LAKE 8420 25.3 21.6 117 26.9 18.7 144
THUMB DIVIDE 7980 22.7 16.7 136 21.6 20.8 104
TWO OCEAN PLATEAU 9360 35.4 26.1 136 30.9 30.7 101
WHISKEY CREEK 6800 20.1 17.0 118 23.4 21.4 109
WHITE MILL 8700 27.2 24.5 111 24.4 27.8 88
WOLVERINE 7650 12.4 11.5 108 12.3 12.5 98
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Basin wide percent of average 120 111
WIND RIVER
BURROUGHS CREEK 8750 16.5 14.7 112 17.8 16.2 110
COLD SPRINGS 9630 8.8 8.2 107 11.1 10.2 109
DEER PARK 9700 15.8 -M * 20.8 -M *
HOBBS PARK 10100 16.6 14.5 114 14.7 13.6 108
LITTLE WARM 9620 13.6 11.2 121 14.8 12.8 116
SOUTH PASS 9040 16.8 16.0 105 17.9 16.5 108
ST. LAWRENCE ALT 8620 6.5 7.4 88 9.6 9.8 98
TOGWOTEE PASS 9580 -M 24.4 * 27.8 28.2 99
TOWNSEND CREEK 8700 9.0 9.6 94 12.0 12.0 100
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Basin wide percent of average 108 105
BIGHORN BASIN
BALD MTN. 9375 19.1 19.9 96 17.8 16.8 106
BEAR TRAP MEADOW 7900 5.1 7.0 73 9.1 7.8 117
BLACKWATER 9780 29.5 21.6 137 24.1 17.5 138
BONE SPRINGS DIV 9350 14.8 15.9 93 15.4 14.4 107
EVENING STAR 9200 32.3 26.4 122 33.4 22.0 152
GRAVE SPRINGS 8550 7.9 9.2 86 10.6 9.2 115
KIRWIN 9550 12.2 9.6 127 13.8 10.4 133
MARQUETTE 8760 8.0 7.8 103 8.9 9.0 99
MIDDLE POWDER 7760 10.2 11.7 87 15.0 11.3 133
OWL CREEK 8975 6.0 4.4 136 6.7 5.9 114
POWDER RIVER PASS 9480 11.2 10.5 107 14.8 11.1 133
SHELL CREEK 9580 15.9 14.6 109 14.7 12.6 117
SYLVAN LAKE 8420 25.3 21.6 117 26.9 18.7 144
SYLVAN ROAD 8120 16.7 12.4 135 18.9 15.7 120
TIMBER CREEK 7950 4.7 6.1 77 6.4 6.6 97
YOUNTS PEAK 8350 20.9 16.8 124 18.8 16.2 116
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Basin wide percent of average 111 124
SHOSHONE RIVER
BLACKWATER 9780 29.5 21.6 137 24.1 17.5 138
EVENING STAR 9200 32.3 26.4 122 33.4 22.0 152
KIRWIN 9550 12.2 9.6 127 13.8 10.4 133
MARQUETTE 8760 8.0 7.8 103 8.9 9.0 99
SYLVAN LAKE 8420 25.3 21.6 117 26.9 18.7 144
SYLVAN ROAD 8120 16.7 12.4 135 18.9 15.7 120
YOUNTS PEAK 8350 20.9 16.8 124 18.8 16.2 116
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Basin wide percent of average 125 132
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.1 7.0 73 9.1 7.8 117
BIG GOOSE 7990 6.1 -M * 9.3 -M *
BONE SPRINGS DIV 9350 14.8 15.9 93 15.4 14.4 107
BURGESS JUNCTION 7880 8.4 11.4 74 10.1 10.9 93
CLOUD PEAK RESERVOIR 9860 14.2 14.2 100 12.9 12.7 102
DOME LAKE 8880 -M 13.3 * 10.2 12.7 80
GRAVE SPRINGS 8550 7.9 9.2 86 10.6 9.2 115
HANSEN SAWMILL 8760 4.7 6.9 68 7.8 7.5 104
MIDDLE POWDER 7760 10.2 11.7 87 15.0 11.3 133
POWDER RIVER PASS 9480 11.2 10.5 107 14.8 11.1 133
SUCKER CREEK 8880 9.8 11.7 84 12.5 12.6 99
TIE CREEK 6870 2.3 -M * 8.1 10.5 77
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Basin wide percent of average 88 105
BELLE FOURCHE
BLIND PARK 6890 6.8 10.7 64 14.9 9.5 157
NORTH RAPID CREEK 6130 5.5 -M * 12.5 -M *
WARREN PEAK 6520 10.0 10.7 93 14.0 7.7 182
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Basin wide percent of average 79 168
UPPER N. PLATTE RIVER
COLUMBINE 9400 19.2 24.4 79 20.9 23.7 88
DIVIDE PEAK 8800 17.7 20.4 87 22.7 22.0 103
ELK RIVER 8700 -M 19.4 * 20.3 18.5 110
JOE WRIGHT 10120 -M 21.2 * 24.9 24.1 103
NORTH FRENCH CREEK 10100 27.4 24.6 111 27.2 22.6 120
OLD BATTLE 10000 26.4 31.0 85 33.3 29.1 114
SOUTH BRUSH CREEK 8400 11.2 12.6 89 18.1 15.6 116
TOWER 10500 40.9 43.9 93 36.7 35.0 105
WEBBER SPRINGS 9200 17.5 27.1 65 24.4 24.3 100
WILLOW CREEK PASS 9540 11.0 11.5 96 11.5 12.1 95
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Basin wide percent of average 88 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.6 25.1 62 20.9 18.6 112
CASPER MTN. 7900 10.4 15.6 67 15.6 13.4 116
DEADMAN HILL 10220 15.5 16.0 97 16.5 16.0 103
DEER PARK 9700 15.8 -M * 20.8 -M *
LAPRELE CREEK 8320 -M 10.2 * 13.8 11.3 122
RENO HILL 8400 12.5 13.7 91 17.4 18.3 95
ROACH 9700 15.0 16.8 89 18.2 20.4 89
SAND LAKE 10080 32.1 31.9 101 26.7 19.6 136
SOUTH PASS 9040 16.8 16.0 105 17.9 16.5 108
WINDY PEAK 7840 6.3 8.4 75 12.2 9.0 136
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Basin wide percent of average 87 111
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.6 11.1 95 16.1 14.8 109
DIVIDE PEAK 8800 17.7 20.4 87 22.7 22.0 103
OLD BATTLE 10000 26.4 31.0 85 33.3 29.1 114
SANDSTONE RS 8150 10.6 14.5 73 18.9 18.0 105
WHISKEY PARK 8950 24.3 28.0 87 27.6 27.1 102
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Basin wide percent of average 85 107
UPPER GREEN RIVER
BIG SANDY OPENING 9100 15.8 14.2 111 14.8 16.2 91
BLIND BULL SUM 8650 28.1 28.8 98 21.5 23.9 90
EAST RIM DIVIDE 7930 13.3 13.7 97 13.5 15.1 89
ELKHART PARK G.S. 9400 13.5 13.5 100 13.9 15.9 87
GROS VENTRE SUMMIT 8775 15.2 15.3 99 14.8 15.9 93
KENDALL R.S. 7740 14.5 14.6 99 15.5 15.5 100
LOOMIS PARK 8240 -M 17.2 * 19.4 18.8 103
NEW FORK LAKE 8340 12.1 11.1 109 11.7 14.4 81
SNIDER BASIN 8250 15.6 14.6 107 16.2 15.1 107
SPRING CREEK DIVIDE 9000 28.4 27.4 104 26.9 27.3 99
TRIPLE PEAK 8500 28.0 25.2 111 28.3 31.0 91
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Basin wide percent of average 103 94
LOWER GREEN RIVER
HAMS FORK 7840 13.1 12.2 107 10.8 13.4 81
HEWINTA 9500 10.7 11.0 97 13.4 12.5 107
HICKERSON PARK 9150 6.0 6.5 92 9.0 9.1 99
HOLE-IN-ROCK 9150 6.0 6.1 98 -M 9.1 *
INDIAN CREEK 9425 28.5 28.0 102 23.9 25.8 93
KELLEY R.S. 8180 16.5 16.8 98 18.0 18.7 96
STEEL CREEK PARK 10100 13.8 15.8 87 15.7 12.3 128
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Basin wide percent of average 98 99
UPPER BEAR RIVER
BUG LAKE 7950 20.9 20.5 102 18.8 18.9 99
HAYDEN FORK 9400 13.9 16.1 86 19.8 18.3 108
KELLEY R.S. 8180 16.5 16.8 98 18.0 18.7 96
LILY LAKE 9050 12.2 12.8 95 17.2 14.2 121
MONTE CRISTO 8960 25.0 28.7 87 25.1 24.8 101
SALT RIVER SUMMIT 7600 15.1 14.1 107 18.0 16.9 107
TRIAL LAKE 9960 20.2 24.5 82 21.0 23.2 91
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Basin wide percent of average 93 102
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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.