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 TUESDAY: APRIL 7 , 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 15.4 17.0 91 20.6 23.3 88
COTTONWOOD CREEK 7600 21.2 24.0 88 24.1 26.2 92
GRANITE CREEK 6770 16.6 18.4 90 21.1 24.6 86
GRASSY LAKE 7265 31.1 36.9 84 34.3 38.9 88
GROS VENTRE SUMMIT 8775 12.4 15.9 78 13.3 16.7 80
LEWIS LAKE DIVIDE 7860 31.1 36.2 86 32.4 39.5 82
PHILLIPS BENCH 8200 27.0 30.0 90 26.7 31.2 86
SALT RIVER SUMMIT 7600 15.4 14.2 108 18.7 17.7 106
SNAKE RIVER STATION 6920 16.8 18.7 90 21.7 27.2 80
SPRING CREEK DIVIDE 9000 21.8 28.8 76 22.4 28.6 78
THUMB DIVIDE 7980 16.1 17.3 93 17.6 21.8 81
TOGWOTEE PASS 9580 25.8 26.0 99 24.5 29.6 83
TWO OCEAN PLATEAU 9360 28.2 26.7 106 27.7 32.1 86
WILLOW CREEK 8450 28.5 31.0 92 32.5 33.6 97
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Basin wide percent of average 90 86
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.7 24.5 80 17.1 18.8 91
BLACK BEAR 7950 40.0 39.2 102 36.9 42.3 87
CANYON 7940 13.1 13.3 98 14.9 14.8 101
FISHER CREEK 9100 31.1 36.9 84 28.6 38.1 75
MADISON PLATEAU 7750 21.5 25.1 86 23.3 27.3 85
NORTHEAST ENTRANCE 7350 6.3 9.1 69 12.1 12.3 98
PARKER PEAK 9400 19.3 22.4 86 16.7 16.2 103
SYLVAN LAKE 8420 18.3 23.0 80 20.9 19.9 105
THUMB DIVIDE 7980 16.1 17.3 93 17.6 21.8 81
TWO OCEAN PLATEAU 9360 28.2 26.7 106 27.7 32.1 86
WHISKEY CREEK 6800 14.7 17.8 83 19.2 22.7 85
WHITE MILL 8700 23.7 25.4 93 21.7 29.5 74
WOLVERINE 7650 9.6 11.7 82 10.5 13.3 79
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Basin wide percent of average 89 86
WIND RIVER
BURROUGHS CREEK 8750 15.5 15.1 103 16.9 17.2 98
COLD SPRINGS 9630 11.4 8.5 134 12.6 11.1 114
DEER PARK 9700 -M -M * 21.7 -M *
HOBBS PARK 10100 16.5 15.7 105 14.8 14.8 100
LITTLE WARM 9620 11.6 12.4 94 13.9 13.9 100
SOUTH PASS 9040 16.3 16.9 96 18.2 17.8 102
ST. LAWRENCE ALT 8620 10.7 7.4 145 10.8 10.7 101
TOGWOTEE PASS 9580 25.8 26.0 99 24.5 29.6 83
TOWNSEND CREEK 8700 12.1 10.1 120 14.5 13.1 111
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Basin wide percent of average 107 98
BIGHORN BASIN
BALD MTN. 9375 20.2 21.3 95 17.6 18.1 97
BEAR TRAP MEADOW 7900 6.9 7.1 97 8.2 8.7 94
BLACKWATER 9780 20.7 23.4 88 18.5 18.6 99
BONE SPRINGS DIV 9350 17.6 17.2 102 16.7 15.7 106
EVENING STAR 9200 23.4 28.1 83 25.3 23.3 109
GRAVE SPRINGS 8550 10.3 -M * 10.9 10.2 107
KIRWIN 9550 13.1 10.5 125 14.1 11.3 125
MARQUETTE 8760 13.5 8.4 161 13.7 10.3 133
MIDDLE POWDER 7760 11.4 12.8 89 10.9 12.4 88
OWL CREEK 8975 8.1 4.6 176 7.3 6.6 111
POWDER RIVER PASS 9480 12.3 11.2 110 12.9 12.1 107
SHELL CREEK 9580 14.6 15.5 94 11.1 13.7 81
SYLVAN LAKE 8420 18.3 23.0 80 20.9 19.9 105
SYLVAN ROAD 8120 10.5 11.8 89 14.7 16.7 88
TIMBER CREEK 7950 9.1 6.4 142 10.8 7.6 142
YOUNTS PEAK 8350 15.0 17.7 85 15.1 17.2 88
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Basin wide percent of average 98 103
SHOSHONE RIVER
BLACKWATER 9780 20.7 23.4 88 18.5 18.6 99
EVENING STAR 9200 23.4 28.1 83 25.3 23.3 109
KIRWIN 9550 13.1 10.5 125 14.1 11.3 125
MARQUETTE 8760 13.5 8.4 161 13.7 10.3 133
SYLVAN LAKE 8420 18.3 23.0 80 20.9 19.9 105
SYLVAN ROAD 8120 10.5 11.8 89 14.7 16.7 88
YOUNTS PEAK 8350 15.0 17.7 85 15.1 17.2 88
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Basin wide percent of average 93 104
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.9 7.1 97 8.2 8.7 94
BONE SPRINGS DIV 9350 17.6 17.2 102 16.7 15.7 106
BURGESS JUNCTION 7880 11.6 12.3 94 12.7 12.1 105
CLOUD PEAK RESERVOIR 9860 14.9 15.7 95 15.1 14.1 107
DOME LAKE 8880 11.1 14.2 78 13.7 13.8 99
GRAVE SPRINGS 8550 10.3 -M * 10.9 10.2 107
HANSEN SAWMILL 8760 7.7 7.3 105 9.6 8.4 114
MIDDLE POWDER 7760 11.4 12.8 89 10.9 12.4 88
POWDER RIVER PASS 9480 12.3 11.2 110 12.9 12.1 107
SUCKER CREEK 8880 12.3 12.7 97 14.0 13.8 101
TIE CREEK 6870 -M -M * -M 11.6 *
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Basin wide percent of average 96 103
BELLE FOURCHE
BLIND PARK 6890 8.8 11.3 78 13.6 10.8 126
NORTH RAPID CREEK 6130 9.8 -M * 10.8 -M *
WARREN PEAK 6520 12.6 11.3 112 11.1 8.5 131
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Basin wide percent of average 95 128
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.6 24.7 83 22.3 25.2 88
DIVIDE PEAK 8800 20.1 21.5 93 20.7 23.7 87
ELK RIVER 8700 16.8 20.2 83 18.8 19.8 95
JOE WRIGHT 10120 20.6 23.0 90 23.6 26.1 90
NORTH FRENCH CREEK 10100 31.4 26.7 118 29.0 24.4 119
OLD BATTLE 10000 32.2 33.7 96 34.8 31.3 111
SOUTH BRUSH CREEK 8400 8.9 13.2 67 12.7 17.2 74
TOWER 10500 45.9 46.9 98 37.4 37.6 99
WEBBER SPRINGS 9200 19.8 28.4 70 25.4 26.3 97
WILLOW CREEK PASS 9540 7.5 12.6 60 7.5 13.2 57
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Basin wide percent of average 89 95
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.0 27.5 80 21.3 20.3 105
CASPER MTN. 7900 12.7 17.6 72 12.7 15.0 85
DEADMAN HILL 10220 15.0 17.1 88 14.4 17.6 82
DEER PARK 9700 -M -M * 21.7 -M *
LAPRELE CREEK 8320 9.2 10.3 89 11.6 12.4 94
RENO HILL 8400 12.8 14.9 86 12.1 19.8 61
ROACH 9700 15.0 17.7 85 16.9 22.0 77
SAND LAKE 10080 27.6 34.2 81 24.2 21.2 114
SOUTH PASS 9040 16.3 16.9 96 18.2 17.8 102
WINDY PEAK 7840 7.6 9.0 84 9.5 10.0 95
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Basin wide percent of average 84 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.1 11.1 109 15.9 15.9 100
DIVIDE PEAK 8800 20.1 21.5 93 20.7 23.7 87
OLD BATTLE 10000 32.2 33.7 96 34.8 31.3 111
SANDSTONE RS 8150 14.8 15.1 98 19.7 19.5 101
WHISKEY PARK 8950 28.7 29.7 97 28.0 29.4 95
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Basin wide percent of average 97 99
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.8 15.0 85 12.0 17.0 71
BLIND BULL SUM 8650 25.1 30.3 83 20.0 25.1 80
EAST RIM DIVIDE 7930 12.9 14.4 90 12.9 15.9 81
ELKHART PARK G.S. 9400 13.3 14.4 92 13.8 16.7 83
GROS VENTRE SUMMIT 8775 12.4 15.9 78 13.3 16.7 80
KENDALL R.S. 7740 14.7 14.0 105 15.7 16.2 97
LOOMIS PARK 8240 12.4 17.3 72 17.9 19.7 91
NEW FORK LAKE 8340 11.9 11.0 108 11.1 15.1 74
SNIDER BASIN 8250 12.9 15.2 85 13.0 15.8 82
SPRING CREEK DIVIDE 9000 21.8 28.8 76 22.4 28.6 78
TRIPLE PEAK 8500 21.9 26.3 83 22.9 32.4 71
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Basin wide percent of average 85 80
LOWER GREEN RIVER
HAMS FORK 7840 11.0 9.5 116 12.1 14.0 86
HEWINTA 9500 12.5 10.4 120 15.7 13.7 115
HICKERSON PARK 9150 13.0 6.8 191 13.6 10.1 135
HOLE-IN-ROCK 9150 10.3 6.4 161 11.9 10.1 118
INDIAN CREEK 9425 25.6 29.6 86 20.4 27.1 75
KELLEY R.S. 8180 16.2 17.4 93 17.0 19.6 87
STEEL CREEK PARK 10100 17.5 17.2 102 19.2 13.5 142
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Basin wide percent of average 109 102
UPPER BEAR RIVER
BUG LAKE 7950 20.7 20.7 100 21.6 20.2 107
HAYDEN FORK 9400 14.0 14.1 99 21.2 19.9 107
KELLEY R.S. 8180 16.2 17.4 93 17.0 19.6 87
LILY LAKE 9050 15.4 13.2 117 18.5 15.4 120
MONTE CRISTO 8960 30.9 29.6 104 27.6 26.6 104
SALT RIVER SUMMIT 7600 15.4 14.2 108 18.7 17.7 106
TRIAL LAKE 9960 22.3 25.4 88 24.1 24.9 97
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Basin wide percent of average 100 103
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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.