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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


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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 THURSDAY: MAY 25 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    3.6      .0       *   43.2    25.0    173 
 Black Bear               8170   42.8    31.2    137    61.7    45.3    136 
 Blind Bull Sum           8650     -M    17.1       *   39.7    23.7    168 
 Cottonwood Creek         7670   14.3     1.4   1021*   45.8    30.6    150 
 East Rim Divide          7930     .1      .0       *   23.5    14.5    162 
 Grand Targhee            9260   54.3    41.2    132    53.0    38.0    139 
 Granite Creek            6770     .8      .0       *   38.7    23.4    165 
 Grassy Lake              7265   19.8    12.2    162    62.5    42.6    147 
 Gros Ventre Summit       8750   10.4     2.2    473    27.2    16.5    165 
 Gunsight Pass            9820   18.8     7.3    258    29.7    18.1    164 
 Lewis Lake Divide        7850   30.1    18.5    163    60.1    41.7    144 
 Phillips Bench           8200   27.3    15.2    180    51.3    33.4    154 
 Salt River Summit        7760     .2      .0       *   32.8    20.3    162 
 Snake River Station      6920     .0      .0       *   39.6    27.1    146 
 Spring Creek Divide      9000   35.2    16.7    211    46.1    28.6    161 
 Thumb Divide             7980     .3      .0       *   31.2    23.2    134 
 Togwotee Pass            9580   31.3    22.4    140    44.5    30.3    147 
 Two Ocean Plateau        9240     -M    27.7       *     -M    33.5       *
 Willow Creek             8380     -M    11.1       *   59.5    41.6    143 
 Younts Peak              8350     .0     9.6      0    34.0    20.0    170 
                                                -----                  -----
                Basin Index (%)                  163                    152 
 

MADISON-GALLATIN

 Black Bear               8170   42.8    31.2    137    61.7    45.3    136 
 Canyon                   7870    4.0      .4   1000*   29.8    20.3    147 
 Madison Plateau          7750   15.7    12.0    131    41.3    32.2    128 
 West Yellowstone         6700     .0      .0       *   26.8    18.0    149 
 Whiskey Creek            6800     .0     2.4      0    31.3    24.9    126 
                                                -----                  -----
                Basin Index (%)                  136                    136 
 

YELLOWSTONE

 Beartooth Lake           9360   32.4    20.4    159    33.2    24.6    135 
 Burnt Mtn                5880     .0      .0       *   23.6    20.0    118 
 Canyon                   7870    4.0      .4   1000*   29.8    20.3    147 
 Cole Creek               7850   14.4    13.6    106    19.3    20.2     96 
 Evening Star             9200   34.3    21.8    157    51.0    34.1    150 
 Fisher Creek             9100   45.9    31.2    147    53.7    39.1    137 
 Northeast Entrance       7350     .0      .0       *   23.8    16.0    149 
 Parker Peak              9400   32.6    18.5    176    41.3    23.0    180 
 Sylvan Lake              8420   13.2    12.6    105    43.5    28.3    154 
 Thumb Divide             7980     .3      .0       *   31.2    23.2    134 
 Two Ocean Plateau        9240     -M    27.7       *     -M    33.5       *
 White Mill               8700   29.6    20.9    142    40.7    29.5    138 
 Wolverine                7650     -M      .0       *   24.6    15.9    155 
                                                -----                  -----
                Basin Index (%)                  148                    141 
 

WIND RIVER

 Burroughs Creek          8750    4.1      -M       *   29.9      -M       *
 Castle Creek             8400     .0      -M       *   18.7      -M       *
 Cold Springs             9630    4.7      .0       *   24.5    14.8    166 
 Deer Park                9700   31.7     8.1    391    47.2    26.6    177 
 Hobbs Park              10100   31.1    10.7    291    37.7    19.8    190 
 Kirwin                   9550   18.0     6.0    300    30.8    16.3    189 
 Little Warm              9370    9.6      .4   2400*   28.1    17.9    157 
 Owl Creek                8975     .0      .0       *   17.1    10.1    169 
 South Pass               9040   28.1     2.6   1081    36.7    22.9    160 
 St. Lawrence Alt         8620     .1      .0       *   22.9    13.9    165 
 Togwotee Pass            9580   31.3    22.4    140    44.5    30.3    147 
 Townsend Creek           8700   11.9      .0       *   31.3    17.6    178 
                                                -----                  -----
                Basin Index (%)                  332*                   169 
 

BIGHORN BASIN

 Bald Mtn.                9380   19.9    17.2    116    23.2    22.8    102 
 Bear Trap Meadow         8200     .0      .0       *   17.3    13.3    130 
 Bone Springs Div         9350   17.2    12.6    137    23.3    21.6    108 
 Grave Springs            8550    2.6      .0       *   16.1    15.6    103 
 Kirwin                   9550   18.0     6.0    300    30.8    16.3    189 
 Marquette                8760   14.5      -M       *   26.4      -M       *
 Middle Powder            7760     .6      .8     75*   16.2    16.8     96 
 Owl Creek                8975     .0      .0       *   17.1    10.1    169 
 Powder River Pass        9480    1.3     2.0     65    19.1    18.1    106 
 Shell Creek              9580   13.4    13.7     98    19.5    19.2    102 
 Timber Creek             7950     .1      .0       *   18.2    12.8    142 
                                                -----                  -----
                Basin Index (%)                  140*                   121 
 

SHOSHONE RIVER

 Blackwater               9780   35.9    23.1    155    48.2    26.7    181 
 Evening Star             9200   34.3    21.8    157    51.0    34.1    150 
 Marquette                8760   14.5      -M       *   26.4      -M       *
 Sylvan Road              7120     .0      .0       *   33.1    20.8    159 
 Younts Peak              8350     .0     9.6      0    34.0    20.0    170 
                                                -----                  -----
                Basin Index (%)                  129                    164 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .0       *   17.3    13.3    130 
 Cloud Peak Reservoir     9860   17.6    12.0    147    28.7    20.4    141 
 Grave Springs            8550    2.6      .0       *   16.1    15.6    103 
 Hansen Sawmill           8360    4.2      .0       *   18.7    13.6    138 
 Middle Powder            7760     .6      .8     75*   16.2    16.8     96 
 Powder River Pass        9480    1.3     2.0     65    19.1    18.1    106 
 Soldier Park             8720    5.7      -M       *   22.5      -M       *
                                                -----                  -----
                Basin Index (%)                  178*                   119 
 

TONGUE RIVER

 Big Goose                7990    6.6      .9    733*   21.6    17.8    121 
 Bone Springs Div         9350   17.2    12.6    137    23.3    21.6    108 
 Burgess Junction         7880    4.4     4.7     94    17.9    17.6    102 
 Dome Lake                8880   13.1     2.4    546    24.7    19.7    125 
 Little Goose             8870   10.1      -M       *   25.8      -M       *
 Sucker Creek             8880    9.8     5.5    178    21.0    20.9    100 
 Tie Creek                6870     .1      .0       *   24.5    18.1    135 
                                                -----                  -----
                Basin Index (%)                  196                    115 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   14.1    15.6     90 
                                                -----                  -----
                Basin Index (%)                     *                    90 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   14.7    17.6     84 
 North Rapid Creek        6130     .0      .0       *   13.0    15.1     86 
                                                -----                  -----
                Basin Index (%)                     *                    85 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   21.0    13.8    152    32.7    28.9    113 
 Blackhall Mtn            9820   29.1      -M       *   44.7      -M       *
 Columbine                9160     .0      .0       *   34.8    30.9    113 
 Divide Peak              8880     .0     1.3      0*   28.2    26.8    105 
 Joe Wright              10120   15.3    18.5     83    36.9    33.4    110 
 Laprele Creek            8375     .3      .0       *   18.0    17.4    103 
 Med Bow                 10500   35.8      -M       *   43.3      -M       *
 North French Creek      10130   22.2    26.2     85    36.1    34.3    105 
 Never Summer            10280   22.1    18.0    123    25.1      -M       *
 Old Battle              10000   37.5    30.0    125    45.9    42.7    107 
 Rawah                    9020     .2      .0       *   22.4    19.1    117 
 Sage Creek Basin         7850     -M      .0       *   19.1    17.7    108 
 Sand Lake               10050   31.5    25.2    125    34.7    32.4    107 
 South Brush Creek        8440     .0      .0       *   17.5    20.5     85 
 Tower                   10500   41.6    44.8     93    54.9    48.4    113 
 Webber Springs           9250   11.0     6.5    169    39.6    32.4    122 
 Willow Creek Pass        9540   11.6     5.8    200    22.8    17.8    128 
 Zirkel                   9340    8.8     1.9    463*   49.8    33.7    148 
                                                -----                  -----
                Basin Index (%)                  116                    113 
 

SWEETWATER

 Deer Park                9700   31.7     8.1    391    47.2    26.6    177 
 Larsen Creek             9000     .3     2.1     14    28.0      -M       *
 South Pass               9040   28.1     2.6   1081    36.7    22.9    160 
                                                -----                  -----
                Basin Index (%)                  470                    169 
 

LOWER N. PLATTE

 Casper Mtn.              7900     .7     1.1     64*   22.0    21.0    105 
 Laprele Creek            8375     .3      .0       *   18.0    17.4    103 
 Reno Hill                8400     .8      .0       *   22.4    22.0    102 
 Windy Peak               7900     .1      .0       *   18.4    15.4    119 
                                                -----                  -----
                Basin Index (%)                  173*                   107 
 

LARAMIE RIVER

 Brooklyn Lake           10240   12.7    11.9    107    29.4    27.7    106 
 Cinnabar Park            9574    5.7     7.5     76    29.2    29.9     98 
 Crow Creek               8330     .0      .0       *   15.8    15.7    101 
 Deadman Hill            10220   16.3    13.3    123    28.8    23.4    123 
 Rawah                    9020     .2      .0       *   22.4    19.1    117 
 Roach                    9700    8.5     7.4    115    28.4    25.1    113 
                                                -----                  -----
                Basin Index (%)                  108                    109 
 

S. PLATTE

 Black Mountain           8920     .9      -M       *   20.7      -M       *
 Crow Creek               8330     .0      .0       *   15.8    15.7    101 
 Deadman Hill            10220   16.3    13.3    123    28.8    23.4    123 
                                                -----                  -----
                Basin Index (%)                  123*                   114 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   20.6    18.9    109 
 Divide Peak              8880     .0     1.3      0*   28.2    26.8    105 
 Elk River                8700     .1      .0       *   24.4    24.9     98 
 Little Snake River       8915   10.3     7.8    132    45.4    35.7    127 
 Old Battle              10000   37.5    30.0    125    45.9    42.7    107 
 Sage Creek Basin         7850     -M      .0       *   19.1    17.7    108 
 Sandstone RS             8150     .0      .0       *   19.8    22.8     87 
 Whiskey Park             8950   13.4    16.1     83    37.3    34.2    109 
                                                -----                  -----
                Basin Index (%)                  111*                   108 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   10.6      .0       *   27.4    17.3    158 
 Blind Bull Sum           8650     -M    17.1       *   39.7    23.7    168 
 East Rim Divide          7930     .1      .0       *   23.5    14.5    162 
 Elkhart Park G.S.        9400    9.8     3.2    306    27.6    17.2    160 
 Gros Ventre Summit       8750   10.4     2.2    473    27.2    16.5    165 
 Gunsight Pass            9820   18.8     7.3    258    29.7    18.1    164 
 Kendall R.S.             7740     .0      .0       *   31.8    17.1    186 
 Loomis Park              8240    9.8      .0       *   35.4    21.0    169 
 New Fork Lake            8340     -M      .0       *   22.3    13.9    160 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     .0      .0       *   29.9    17.1    175 
 Spring Creek Divide      9000   35.2    16.7    211    46.1    28.6    161 
 Triple Peak              8500   19.9     3.5    569    45.8    30.8    149 
                                                -----                  -----
                Basin Index (%)                  348*                   164 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .1      -M       *   19.7      -M       *
 Buck Pasture             9632    1.0      -M       *   28.4      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   23.8      -M       *
 Hams Fork                7840     .1      .0       *   24.9    14.8    168 
 Hewinta                  9500     .0      .0       *   22.1    18.1    122 
 Hickerson Park           9122     .1      .0       *   16.3    13.9    117 
 Hole-in-Rock             9168     .0      .0       *   17.1    13.5    127 
 Indian Creek             9425   33.6    14.9    226    46.9    27.5    171 
 Kelley R.S.              8180    3.0      .0       *   35.5    22.3    159 
 Spirit Lk               10235    1.9      -M       *   22.6      -M       *
 Steel Creek Park        10158   14.5    12.2    119    26.6    21.4    124 
                                                -----                  -----
                Basin Index (%)                  189*                   144 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   22.2      -M       *
 Bug Lake                 7987   15.0      .0       *   39.1    23.9    164 
 Burts Miller Ranch       8000     .0      -M       *   12.4      -M       *
 Chalk Creek #1           9171   19.2    11.1    173    42.4    31.4    135 
 Hayden Fork              9130     .1      .0       *   33.2    26.3    126 
 Kelley R.S.              8180    3.0      .0       *   35.5    22.3    159 
 Lily Lake                9133     .0      .0       *   24.0    21.8    110 
 Monte Cristo             8932   24.3     9.6    253    46.4    32.1    145 
 Salt River Summit        7760     .2      .0       *   32.8    20.3    162 
                                                -----                  -----
                Basin Index (%)                  299*                   142 
----------------------------------------------------------------------------

 -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.