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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785

At 2:18a, 5/22/18
Temperature 50.1°F
Wind 0.0 mph


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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: JANUARY 20 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   15.4     9.9    156    23.2    12.5    186 
 Black Bear               8170   21.6    21.6    100    30.8    22.1    139 
 Blind Bull Sum           8650   21.7    12.6    172      -M    11.6       *
 Cottonwood Creek         7670   14.9    11.1    134    21.1    14.3    148 
 East Rim Divide          7930   10.3     6.0    172    12.6     7.0    180 
 Grand Targhee            9260   27.5    21.4    129    25.6    18.4    139 
 Granite Creek            6770   15.0     9.1    165    20.7    12.1    171 
 Grassy Lake              7265   22.4    17.4    129    33.8    21.3    159 
 Gros Ventre Summit       8750    9.4     7.6    124    13.7     7.5    183 
 Gunsight Pass            9820   10.2     7.7    132    14.2     8.0    178 
 Lewis Lake Divide        7850   19.4    17.2    113    31.1    20.8    150 
 Phillips Bench           8200   17.5    15.5    113    26.5    16.3    163 
 Salt River Summit        7760   11.2     6.8    165    16.5     9.6    172 
 Snake River Station      6920   14.0     9.3    151    22.0    13.8    159 
 Spring Creek Divide      9000   19.3    12.6    153    22.6    13.9    163 
 Thumb Divide             7980   10.2     8.3    123    15.6    10.9    143 
 Togwotee Pass            9580   17.6    13.2    133    21.4    14.4    149 
 Two Ocean Plateau        9240     -M    15.7       *     -M    15.7       *
 Willow Creek             8380   18.5    15.0    123    27.8    19.5    143 
 Younts Peak              8350   12.4     8.7    143    16.8     9.6    175 
                                                -----                  -----
                Basin Index (%)                  134                    157 
 

MADISON-GALLATIN

 Black Bear               8170   21.6    21.6    100    30.8    22.1    139 
 Canyon                   7870    9.1     7.5    121    15.5     9.6    161 
 Madison Plateau          7750   12.9    13.1     98    22.2    15.5    143 
 West Yellowstone         6700    7.4     6.5    114    14.8     8.6    172 
 Whiskey Creek            6800    8.4     8.7     97    16.3    12.0    136 
                                                -----                  -----
                Basin Index (%)                  103                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   15.3    12.7    120    11.8    11.5    103 
 Burnt Mtn                5880    4.5     2.3    196     8.4     7.4    114 
 Canyon                   7870    9.1     7.5    121    15.5     9.6    161 
 Cole Creek               7850    6.1     7.5     81     5.3     7.2     74 
 Evening Star             9200   18.3    14.3    128    24.6    16.3    151 
 Fisher Creek             9100   18.0    19.0     95    23.0    18.6    124 
 Northeast Entrance       7350    6.4     5.6    114    11.6     7.5    155 
 Parker Peak              9400   16.2    11.9    136    19.0    10.4    183 
 Sylvan Lake              8420   12.5    11.5    109    23.1    13.5    171 
 Thumb Divide             7980   10.2     8.3    123    15.6    10.9    143 
 Two Ocean Plateau        9240     -M    15.7       *     -M    15.7       *
 White Mill               8700   14.9    13.3    112    18.0    13.9    129 
 Wolverine                7650     -M     6.2       *     -M     7.5       *
                                                -----                  -----
                Basin Index (%)                  115                    139 
 

WIND RIVER

 Burroughs Creek          8750   11.8      -M       *   14.6      -M       *
 Castle Creek             8400    6.7      -M       *    8.8      -M       *
 Cold Springs             9630    6.0     4.2    143     8.6     5.8    148 
 Deer Park                9700   17.3     7.7    225    20.8    11.3    184 
 Hobbs Park              10100   12.0     7.4    162    12.0     7.2    167 
 Kirwin                   9550    9.6     5.3    181    12.7     6.7    190 
 Little Warm              9370    6.6     5.8    114    11.8     7.4    159 
 Owl Creek                8975    3.5     3.0    117     5.2     3.3    158 
 South Pass               9040   16.5     8.0    206    16.2    10.0    162 
 St. Lawrence Alt         8620    3.3     3.6     92     7.2     5.0    144 
 Togwotee Pass            9580   17.6    13.2    133    21.4    14.4    149 
 Townsend Creek           8700    6.4     4.5    142     9.3     6.6    141 
                                                -----                  -----
                Basin Index (%)                  158                    161 
 

BIGHORN BASIN

 Bald Mtn.                9380   11.8    10.0    118    10.6     9.8    108 
 Bear Trap Meadow         8200    2.9     3.0     97     4.5     4.8     94 
 Bone Springs Div         9350    9.1     9.0    101     9.8     8.7    113 
 Grave Springs            8550    3.4     4.5     76     4.6     6.0     77 
 Kirwin                   9550    9.6     5.3    181    12.7     6.7    190 
 Marquette                8760    4.6      -M       *    7.9      -M       *
 Middle Powder            7760    4.2     6.1     69     5.1     6.9     74 
 Owl Creek                8975    3.5     3.0    117     5.2     3.3    158 
 Powder River Pass        9480    3.4     5.9     58     6.6     7.2     92 
 Shell Creek              9580    9.8     8.6    114     8.1     8.0    101 
 Timber Creek             7950    3.4     2.8    121     4.7     4.3    109 
                                                -----                  -----
                Basin Index (%)                  105                    109 
 

SHOSHONE RIVER

 Blackwater               9780   19.1    13.1    146    22.8    12.1    188 
 Evening Star             9200   18.3    14.3    128    24.6    16.3    151 
 Marquette                8760    4.6      -M       *    7.9      -M       *
 Sylvan Road              7120    9.2     7.1    130    19.3    10.9    177 
 Younts Peak              8350   12.4     8.7    143    16.8     9.6    175 
                                                -----                  -----
                Basin Index (%)                  137                    171 
 

POWDER RIVER

 Bear Trap Meadow         8200    2.9     3.0     97     4.5     4.8     94 
 Cloud Peak Reservoir     9860    6.9     7.6     91     9.0     7.3    123 
 Grave Springs            8550    3.4     4.5     76     4.6     6.0     77 
 Hansen Sawmill           8360    4.4     3.6    122     6.2     4.6    135 
 Middle Powder            7760    4.2     6.1     69     5.1     6.9     74 
 Powder River Pass        9480    3.4     5.9     58     6.6     7.2     92 
 Soldier Park             8720    7.1      -M       *    6.5      -M       *
                                                -----                  -----
                Basin Index (%)                   82                     98 
 

TONGUE RIVER

 Big Goose                7990    5.0     4.4    114     6.1     6.0    102 
 Bone Springs Div         9350    9.1     9.0    101     9.8     8.7    113 
 Burgess Junction         7880    5.2     6.1     85     6.7     6.9     97 
 Dome Lake                8880    6.3     6.4     98     7.8     7.7    101 
 Little Goose             8870    5.4      -M       *    7.6      -M       *
 Sucker Creek             8880    6.1     6.5     94     6.8     8.0     85 
 Tie Creek                6870    3.7     3.0    123     6.8     6.6    103 
                                                -----                  -----
                Basin Index (%)                  100                    100 
 

BELLE FOURCHE

 Cole Canyon              5910    3.1     2.9    107     4.2     5.3     79 
                                                -----                  -----
                Basin Index (%)                  107                     79 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    3.7     4.1     90     4.8     7.2     67 
 North Rapid Creek        6130    4.0     3.8    105     4.3     5.8     74 
                                                -----                  -----
                Basin Index (%)                   97                     70 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   17.9    11.2    160    18.7    12.9    145 
 Blackhall Mtn            9820   23.4      -M       *   24.6      -M       *
 Columbine                9160   17.7    12.9    137    19.7    14.6    135 
 Divide Peak              8880   12.0    11.0    109    14.5    12.5    116 
 Joe Wright              10120   13.9    11.9    117    19.2    14.6    132 
 Laprele Creek            8375    6.4     5.2    123     6.2     6.9     90 
 Med Bow                 10500   24.6      -M       *   23.4      -M       *
 North French Creek      10130   15.4    14.4    107    17.0    15.2    112 
 Never Summer            10280     -M    10.9       *     -M      -M       *
 Old Battle              10000   22.7    16.3    139    24.8    20.3    122 
 Rawah                    9020    9.3     5.6    166    11.9     8.6    138 
 Sage Creek Basin         7850    9.8     7.4    132    10.3     8.8    117 
 Sand Lake               10050   18.2    14.8    123    17.7    13.7    129 
 South Brush Creek        8440    6.5     6.4    102     7.9     8.7     91 
 Tower                   10500   27.7    23.9    116    30.6    23.0    133 
 Webber Springs           9250   18.1    12.2    148    21.9    15.4    142 
 Willow Creek Pass        9540   12.5     6.5    192    12.7     7.6    167 
 Zirkel                   9340   25.7    16.1    160    26.5    16.9    157 
                                                -----                  -----
                Basin Index (%)                  133                    130 
 

SWEETWATER

 Deer Park                9700   17.3     7.7    225    20.8    11.3    184 
 Larsen Creek             9000   11.5     6.4    180    15.0      -M       *
 South Pass               9040   16.5     8.0    206    16.2    10.0    162 
                                                -----                  -----
                Basin Index (%)                  205                    174 
 

LOWER N. PLATTE

 Casper Mtn.              7900    5.9     6.9     86     6.2     8.4     74 
 Laprele Creek            8375    6.4     5.2    123     6.2     6.9     90 
 Reno Hill                8400     -M     6.9       *     -M     8.2       *
 Windy Peak               7900    5.1     3.8    134     5.8     5.9     98 
                                                -----                  -----
                Basin Index (%)                  109                     86 
 

LARAMIE RIVER

 Brooklyn Lake           10240   15.2    11.2    136    14.2    11.6    122 
 Cinnabar Park            9574   12.6    11.7    108    15.1    14.5    104 
 Crow Creek               8330    4.0     5.3     75     5.7     6.1     93 
 Deadman Hill            10220   13.6     8.6    158    13.5     9.4    144 
 Rawah                    9020    9.3     5.6    166    11.9     8.6    138 
 Roach                    9700   11.6     9.1    127    13.7    10.8    127 
                                                -----                  -----
                Basin Index (%)                  129                    121 
 

S. PLATTE

 Black Mountain           8920    7.0      -M       *    8.3      -M       *
 Crow Creek               8330    4.0     5.3     75     5.7     6.1     93 
 Deadman Hill            10220   13.6     8.6    158    13.5     9.4    144 
                                                -----                  -----
                Basin Index (%)                  127                    124 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    7.9     6.0    132    10.7     8.8    122 
 Divide Peak              8880   12.0    11.0    109    14.5    12.5    116 
 Elk River                8700   14.7     9.7    152    14.3    11.5    124 
 Little Snake River       8915   20.8    12.7    164    26.0    18.6    140 
 Old Battle              10000   22.7    16.3    139    24.8    20.3    122 
 Sage Creek Basin         7850    9.8     7.4    132    10.3     8.8    117 
 Sandstone RS             8150   10.0     7.2    139    10.8    10.8    100 
 Whiskey Park             8950   18.1    14.5    125    20.2    15.9    127 
                                                -----                  -----
                Basin Index (%)                  137                    123 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   12.5     7.0    179    14.9     7.6    196 
 Blind Bull Sum           8650   21.7    12.6    172      -M    11.6       *
 East Rim Divide          7930   10.3     6.0    172    12.6     7.0    180 
 Elkhart Park G.S.        9400    9.3     6.8    137    14.6     7.8    187 
 Gros Ventre Summit       8750    9.4     7.6    124    13.7     7.5    183 
 Gunsight Pass            9820   10.2     7.7    132    14.2     8.0    178 
 Kendall R.S.             7740   11.9     6.8    175    16.2     8.3    195 
 Loomis Park              8240   14.3     8.4    170    19.4    10.2    190 
 New Fork Lake            8340    9.5     6.0    158     9.9     6.4    155 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   11.4     6.5    175    16.1     8.3    194 
 Spring Creek Divide      9000   19.3    12.6    153    22.6    13.9    163 
 Triple Peak              8500   21.0    11.6    181    23.2    14.3    162 
                                                -----                  -----
                Basin Index (%)                  161                    179 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    7.9      -M       *    9.9      -M       *
 Buck Pasture             9700   12.1      -M       *   14.8      -M       *
 EF Blacks Fork GS        9360    8.6      -M       *    9.4      -M       *
 Hams Fork                7840   10.3     6.2    166    12.4     6.6    188 
 Hewinta                  9519    8.2     5.0    164    10.5     7.8    135 
 Hickerson Park           9145    5.6     3.2    175     6.0     5.7    105 
 Hole-in-Rock             9150    4.7     3.6    131     6.6     5.4    122 
 Indian Creek             9425   20.0    13.1    153      -M    12.6       *
 Kelley R.S.              8180   14.0     7.8    179    19.1    10.5    182 
 Spirit Lk               10235    8.5      -M       *   10.1      -M       *
 Steel Creek Park        10200   11.1     7.5    148    12.7     9.0    141 
                                                -----                  -----
                Basin Index (%)                  159                    150 
 

UPPER BEAR RIVER

 Bear River RS            8777    8.9      -M       *   10.8      -M       *
 Bug Lake                 7950     -M     9.0       *     -M    11.2       *
 Burts Miller Ranch       8000    4.9      -M       *    5.6      -M       *
 Chalk Creek #1           8993   19.7    11.9    166      -M    14.0       *
 Hayden Fork              9212   13.8     7.6    182    18.3    11.8    155 
 Kelley R.S.              8180   14.0     7.8    179    19.1    10.5    182 
 Lily Lake                9156   10.5     6.7    157    12.0     9.7    124 
 Monte Cristo             8960   19.0    13.9    137      -M    14.7       *
 Salt River Summit        7760   11.2     6.8    165    16.5     9.6    172 
                                                -----                  -----
                Basin Index (%)                  161                    158*

-----------------------------------------------------------------------------


 -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.