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 SUNDAY: MAY 24 , 1998
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 1.2 2.3 52 25.5 27.2 94
COTTONWOOD CREEK 7600 6.8 6.6 103 29.9 30.4 98
GRANITE CREEK 6770 1.1 4.3 26 24.9 29.0 86
GRASSY LAKE 7265 18.2 19.2 95 42.3 45.2 94
GROS VENTRE SUMMIT 8775 5.5 4.8 115 17.0 19.6 87
LEWIS LAKE DIVIDE 7860 19.6 24.4 80 38.2 45.9 83
PHILLIPS BENCH 8200 21.0 21.2 99 31.7 36.2 88
SALT RIVER SUMMIT 7600 1.1 .0 * 24.8 20.8 119
SNAKE RIVER STATION 6920 .1 5.4 2 27.6 31.7 87
SPRING CREEK DIVIDE 9000 19.6 22.3 88 27.2 33.0 82
THUMB DIVIDE 7980 1.7 5.3 32 22.5 25.5 88
TOGWOTEE PASS 9580 23.4 24.7 95 29.4 34.4 85
TWO OCEAN PLATEAU 9360 27.1 24.3 112 33.4 37.4 89
WILLOW CREEK 8450 14.6 23.2 63 39.3 39.0 101
----- -----
Basin wide percent of average 85 91
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 16.3 22.0 74 19.6 24.0 82
BLACK BEAR 7950 35.9 32.0 112 44.9 49.5 91
CANYON 7940 .0 3.8 0 17.7 18.2 97
FISHER CREEK 9100 27.1 34.4 79 33.3 45.8 73
MADISON PLATEAU 7750 13.9 12.9 108 29.6 32.4 91
NORTHEAST ENTRANCE 7350 .0 1.3 0 13.7 15.8 87
PARKER PEAK 9400 13.6 20.5 66 19.8 20.6 96
SYLVAN LAKE 8420 9.4 17.2 55 25.8 25.3 102
THUMB DIVIDE 7980 1.7 5.3 32 22.5 25.5 88
TWO OCEAN PLATEAU 9360 27.1 24.3 112 33.4 37.4 89
WHISKEY CREEK 6800 4.8 5.1 94 24.6 26.9 91
WHITE MILL 8700 19.3 22.0 88 25.4 35.6 71
WOLVERINE 7650 .0 1.4 0 11.8 17.4 68
----- -----
Basin wide percent of average 84 86
WIND RIVER
BURROUGHS CREEK 8750 9.1 4.3 212 21.0 21.7 97
COLD SPRINGS 9630 .6 1.5 40 16.6 15.3 108
DEER PARK 9700 -M -M * 26.4 -M *
HOBBS PARK 10100 15.5 12.9 120 20.5 20.0 103
LITTLE WARM 9620 1.8 2.9 62 17.7 18.5 96
SOUTH PASS 9040 7.9 13.1 60 22.9 23.1 99
ST. LAWRENCE ALT 8620 .1 1.2 8 15.2 14.2 107
TOGWOTEE PASS 9580 23.4 24.7 95 29.4 34.4 85
TOWNSEND CREEK 8700 .2 3.8 5 18.5 17.8 104
----- -----
Basin wide percent of average 91 98
BIGHORN BASIN
BALD MTN. 9375 17.3 21.3 81 20.8 24.1 86
BEAR TRAP MEADOW 7900 .0 .7 0* 13.1 13.0 101
BLACKWATER 9780 20.7 21.6 96 22.8 23.1 99
BONE SPRINGS DIV 9350 10.7 12.1 88 20.3 21.1 96
EVENING STAR 9200 18.3 27.8 66 29.6 28.9 102
GRAVE SPRINGS 8550 1.7 -M * 15.7 15.2 103
KIRWIN 9550 7.4 7.5 99 17.7 15.5 114
MARQUETTE 8760 7.8 5.7 137 18.2 16.3 112
MIDDLE POWDER 7760 .3 7.9 4 15.0 17.3 87
OWL CREEK 8975 .0 .5 0 11.1 10.0 111
POWDER RIVER PASS 9480 3.4 3.6 94 17.6 17.3 102
SHELL CREEK 9580 8.7 13.9 63 14.5 18.8 77
SYLVAN LAKE 8420 9.4 17.2 55 25.8 25.3 102
SYLVAN ROAD 8120 .1 2.4 4 17.0 21.0 81
TIMBER CREEK 7950 .0 1.3 0 13.7 12.8 107
YOUNTS PEAK 8350 10.8 12.3 88 18.8 21.5 87
----- -----
Basin wide percent of average 74 97
SHOSHONE RIVER
BLACKWATER 9780 20.7 21.6 96 22.8 23.1 99
EVENING STAR 9200 18.3 27.8 66 29.6 28.9 102
KIRWIN 9550 7.4 7.5 99 17.7 15.5 114
MARQUETTE 8760 7.8 5.7 137 18.2 16.3 112
SYLVAN LAKE 8420 9.4 17.2 55 25.8 25.3 102
SYLVAN ROAD 8120 .1 2.4 4 17.0 21.0 81
YOUNTS PEAK 8350 10.8 12.3 88 18.8 21.5 87
----- -----
Basin wide percent of average 79 99
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .7 0* 13.1 13.0 101
BONE SPRINGS DIV 9350 10.7 12.1 88 20.3 21.1 96
BURGESS JUNCTION 7880 2.0 6.4 31 15.3 16.8 91
CLOUD PEAK RESERVOIR 9860 9.9 12.0 83 21.1 20.2 104
DOME LAKE 8880 -M 6.9 * 17.4 19.2 91
GRAVE SPRINGS 8550 1.7 -M * 15.7 15.2 103
HANSEN SAWMILL 8760 .0 2.3 0 14.9 12.3 121
MIDDLE POWDER 7760 .3 7.9 4 15.0 17.3 87
POWDER RIVER PASS 9480 3.4 3.6 94 17.6 17.3 102
SUCKER CREEK 8880 .2 7.1 3 17.3 19.5 89
TIE CREEK 6870 .0 -M * 16.8 16.2 104
----- -----
Basin wide percent of average 51 98
BELLE FOURCHE
BLIND PARK 6890 .1 2.2 5 15.9 17.1 93
NORTH RAPID CREEK 6130 .0 -M * 13.6 -M *
WARREN PEAK 6520 .0 2.2 0 13.4 12.5 107
----- -----
Basin wide percent of average 2 99
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 8.1 0 27.6 30.2 91
DIVIDE PEAK 8800 .0 7.4 0 24.3 29.9 81
ELK RIVER 8700 .0 4.1 0 23.7 23.9 99
JOE WRIGHT 10120 16.6 20.2 82 30.2 33.7 90
NORTH FRENCH CREEK 10100 26.6 23.3 114 36.0 31.2 115
OLD BATTLE 10000 30.9 30.1 103 41.8 38.6 108
SOUTH BRUSH CREEK 8400 .0 3.3 0 16.4 22.6 73
TOWER 10500 46.2 47.4 97 48.4 47.8 101
WEBBER SPRINGS 9200 6.7 15.1 44 30.5 32.9 93
WILLOW CREEK PASS 9540 .7 6.2 11 10.9 17.6 62
----- -----
Basin wide percent of average 77 94
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.6 18.5 68 27.4 26.2 105
CASPER MTN. 7900 .2 7.1 3 15.8 21.8 72
DEADMAN HILL 10220 12.0 14.2 85 19.3 23.7 81
DEER PARK 9700 -M -M * 26.4 -M *
LAPRELE CREEK 8320 .0 2.1 0 13.4 17.2 78
RENO HILL 8400 .0 5.6 0 14.6 23.8 61
ROACH 9700 6.4 11.5 56 21.9 29.1 75
SAND LAKE 10080 26.2 29.7 88 30.0 27.5 109
SOUTH PASS 9040 7.9 13.1 60 22.9 23.1 99
WINDY PEAK 7840 .0 1.6 0 12.0 14.8 81
----- -----
Basin wide percent of average 63 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * 18.2 20.3 90
DIVIDE PEAK 8800 .0 7.4 0 24.3 29.9 81
OLD BATTLE 10000 30.9 30.1 103 41.8 38.6 108
SANDSTONE RS 8150 .0 1.1 0* 23.1 25.2 92
WHISKEY PARK 8950 -M 18.3 * 35.1 37.2 94
----- -----
Basin wide percent of average 80* 94
UPPER GREEN RIVER
BIG SANDY OPENING 9100 4.1 4.6 89 16.6 20.1 83
BLIND BULL SUM 8650 19.7 19.2 103 23.6 28.8 82
EAST RIM DIVIDE 7930 5.4 9.7 56 15.0 18.7 80
ELKHART PARK G.S. 9400 6.4 6.9 93 18.2 19.7 92
GROS VENTRE SUMMIT 8775 5.5 4.8 115 17.0 19.6 87
KENDALL R.S. 7740 .0 .0 100* 18.7 19.2 97
LOOMIS PARK 8240 -M 5.3 * 21.4 23.2 92
NEW FORK LAKE 8340 -M 2.9 * 14.2 17.8 80
SNIDER BASIN 8250 1.2 4.0 30 16.2 18.7 87
SPRING CREEK DIVIDE 9000 19.6 22.3 88 27.2 33.0 82
TRIPLE PEAK 8500 8.1 17.8 46 27.0 37.8 71
----- -----
Basin wide percent of average 78 84
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 14.9 16.5 90
HEWINTA 9500 .0 .0 100* 18.9 18.3 103
HICKERSON PARK 9150 .0 .3 0* 18.3 14.5 126
HOLE-IN-ROCK 9150 .0 .3 0* 16.0 14.5 110
INDIAN CREEK 9425 20.0 20.9 96 24.9 31.5 79
KELLEY R.S. 8180 3.6 4.7 77 21.4 23.2 92
STEEL CREEK PARK 10100 20.2 14.2 142 23.8 18.8 127
----- -----
Basin wide percent of average 108* 101
UPPER BEAR RIVER
BUG LAKE 7950 8.5 6.0 142 26.2 24.3 108
HAYDEN FORK 9400 .4 .3 133* 26.4 25.4 104
KELLEY R.S. 8180 3.6 4.7 77 21.4 23.2 92
LILY LAKE 9050 .9 3.2 28 23.1 20.3 114
MONTE CRISTO 8960 -M 15.5 * -M 32.8 *
SALT RIVER SUMMIT 7600 1.1 .0 * 24.8 20.8 119
TRIAL LAKE 9960 16.9 16.2 104 29.8 30.8 97
----- -----
Basin wide percent of average 100 105
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.