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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 WEDNESDAY: MAY 24 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    4.6      .0       *   43.2    24.9    173 
 Black Bear               8170   44.0    31.8    138    61.7    45.2    137 
 Blind Bull Sum           8650     -M    17.6       *   39.7    23.7    168 
 Cottonwood Creek         7670   14.9     2.4    621    45.2    30.5    148 
 East Rim Divide          7930     .1      .0       *   23.5    14.5    162 
 Grand Targhee            9260   55.4    41.3    134    53.0    37.6    141 
 Granite Creek            6770    2.2      .0       *   38.7    23.3    166 
 Grassy Lake              7265   21.6    13.2    164    62.5    42.5    147 
 Gros Ventre Summit       8750     -M     2.8       *     -M    16.4       *
 Gunsight Pass            9820   19.5     8.0    244    29.6    18.0    164 
 Lewis Lake Divide        7850   32.4    19.4    167    60.2    41.5    145 
 Phillips Bench           8200   28.9    16.0    181    51.4    33.3    154 
 Salt River Summit        7760     .1      .0       *   32.6    20.2    161 
 Snake River Station      6920     .0      .0       *   39.6    27.0    147 
 Spring Creek Divide      9000   37.0    17.5    211    45.8    28.5    161 
 Thumb Divide             7980    1.0      .0       *   31.2    23.1    135 
 Togwotee Pass            9580   31.8    22.6    141    44.5    30.1    148 
 Two Ocean Plateau        9240     -M    27.7       *     -M    33.4       *
 Willow Creek             8380     -M    12.4       *   59.4    41.5    143 
 Younts Peak              8350     .0    10.2      0    34.0    20.0    170 
                                                -----                  -----
                Basin Index (%)                  161                    151 
 

MADISON-GALLATIN

 Black Bear               8170   44.0    31.8    138    61.7    45.2    137 
 Canyon                   7870    5.4      .4   1350*   29.8    20.2    148 
 Madison Plateau          7750   16.9    12.4    136    41.4    32.1    129 
 West Yellowstone         6700     .0      .0       *   26.8    17.9    150 
 Whiskey Creek            6800    1.3     3.1     42    31.1    24.7    126 
                                                -----                  -----
                Basin Index (%)                  142                    136 
 

YELLOWSTONE

 Beartooth Lake           9360   33.0    20.6    160    33.1    24.5    135 
 Burnt Mtn                5880     .0      .0       *   23.6    19.8    119 
 Canyon                   7870    5.4      .4   1350*   29.8    20.2    148 
 Cole Creek               7850   15.3    14.2    108    19.3    20.1     96 
 Evening Star             9200   34.8    22.2    157    50.9    33.9    150 
 Fisher Creek             9100   46.4    31.6    147    53.6    38.9    138 
 Northeast Entrance       7350     .0      .0       *   23.9    15.9    150 
 Parker Peak              9400   33.9    18.9    179    41.5    22.9    181 
 Sylvan Lake              8420   14.7    13.2    111    43.5    28.2    154 
 Thumb Divide             7980    1.0      .0       *   31.2    23.1    135 
 Two Ocean Plateau        9240     -M    27.7       *     -M    33.4       *
 White Mill               8700   30.8    21.2    145    40.7    29.4    138 
 Wolverine                7650     -M      .0       *   24.9    15.8    158 
                                                -----                  -----
                Basin Index (%)                  151                    142 
 

WIND RIVER

 Burroughs Creek          8750    5.8      -M       *   29.9      -M       *
 Castle Creek             8400     .0      -M       *   18.6      -M       *
 Cold Springs             9630    5.9      .0       *   24.5    14.7    167 
 Deer Park                9700   31.5     8.6    366    46.5    26.4    176 
 Hobbs Park              10100   32.2    11.3    285    37.7    19.7    191 
 Kirwin                   9550   19.1     6.5    294    30.8    16.3    189 
 Little Warm              9370   10.4      .6   1733*   28.1    17.8    158 
 Owl Creek                8975     .0      .0       *   17.1    10.0    171 
 South Pass               9040   28.1     3.3    852    36.6    22.8    161 
 St. Lawrence Alt         8620     .5      .0       *   22.8    13.8    165 
 Togwotee Pass            9580   31.8    22.6    141    44.5    30.1    148 
 Townsend Creek           8700   12.9      .0       *   31.2    17.5    178 
                                                -----                  -----
                Basin Index (%)                  326*                   169 
 

BIGHORN BASIN

 Bald Mtn.                9380   20.6    17.6    117    23.2    22.6    103 
 Bear Trap Meadow         8200     .0      .0       *   17.0    13.1    130 
 Bone Springs Div         9350   17.8    13.0    137    23.3    21.4    109 
 Grave Springs            8550    4.1      .1   4100*   15.8    15.4    103 
 Kirwin                   9550   19.1     6.5    294    30.8    16.3    189 
 Marquette                8760   15.7      -M       *   26.7      -M       *
 Middle Powder            7760    2.0     1.6    125    15.6    16.6     94 
 Owl Creek                8975     .0      .0       *   17.1    10.0    171 
 Powder River Pass        9480    2.7     2.5    108    19.1    17.9    107 
 Shell Creek              9580   14.2    14.1    101    19.4    19.1    102 
 Timber Creek             7950    1.1      .0       *   18.2    12.7    143 
                                                -----                  -----
                Basin Index (%)                  147                    121 
 

SHOSHONE RIVER

 Blackwater               9780   38.1    23.4    163    48.2    26.5    182 
 Evening Star             9200   34.8    22.2    157    50.9    33.9    150 
 Marquette                8760   15.7      -M       *   26.7      -M       *
 Sylvan Road              7120     .0      .0       *   33.3    20.6    162 
 Younts Peak              8350     .0    10.2      0    34.0    20.0    170 
                                                -----                  -----
                Basin Index (%)                  131                    165 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .0       *   17.0    13.1    130 
 Cloud Peak Reservoir     9860   18.4    12.6    146    28.6    20.3    141 
 Grave Springs            8550    4.1      .1   4100*   15.8    15.4    103 
 Hansen Sawmill           8360    5.7      .0       *   18.9    13.4    141 
 Middle Powder            7760    2.0     1.6    125    15.6    16.6     94 
 Powder River Pass        9480    2.7     2.5    108    19.1    17.9    107 
 Soldier Park             8720    7.4      -M       *   22.5      -M       *
                                                -----                  -----
                Basin Index (%)                  196*                   119 
 

TONGUE RIVER

 Big Goose                7990    8.0     1.3    615    21.5    17.6    122 
 Bone Springs Div         9350   17.8    13.0    137    23.3    21.4    109 
 Burgess Junction         7880    5.7     5.4    106    17.7    17.5    101 
 Dome Lake                8880   13.9     3.2    434    24.7    19.6    126 
 Little Goose             8870   11.4      -M       *   25.8      -M       *
 Sucker Creek             8880   10.5     6.3    167    21.2    20.8    102 
 Tie Creek                6870     .6      .0       *   24.5    17.9    137 
                                                -----                  -----
                Basin Index (%)                  193                    116 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   14.0    15.3     92 
                                                -----                  -----
                Basin Index (%)                     *                    92 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *     -M    17.4       *
 North Rapid Creek        6130     .0      .0       *     -M    15.0       *
                                                -----                  -----
                Basin Index (%)                     *                      *
 

UPPER N. PLATTE

 Arapaho Ridge           10960   21.9    14.7    149    32.7    28.8    114 
 Blackhall Mtn            9820   30.0      -M       *   44.6      -M       *
 Columbine                9160     .0      .0       *   34.7    30.9    112 
 Divide Peak              8880     .0     2.2      0    28.0    26.7    105 
 Joe Wright              10120   15.9    19.1     83    36.9    33.2    111 
 Laprele Creek            8375     .2      .0       *   17.5    17.2    102 
 Med Bow                 10500   36.6      -M       *   43.2      -M       *
 North French Creek      10130   22.6    26.9     84    36.1    34.2    106 
 Never Summer            10280   22.2    18.4    121    25.1      -M       *
 Old Battle              10000   38.1    30.7    124    45.7    42.5    108 
 Rawah                    9020     .2      .0       *   22.2    19.1    116 
 Sage Creek Basin         7850     -M      .0       *   19.1    17.6    109 
 Sand Lake               10050   31.4    25.8    122    34.7    32.3    107 
 South Brush Creek        8440     .0      .0       *   16.6    20.4     81 
 Tower                   10500   41.8    45.6     92    54.8    48.3    113 
 Webber Springs           9250   12.0     7.7    156    39.6    32.4    122 
 Willow Creek Pass        9540   12.5     6.8    184    22.8    17.7    129 
 Zirkel                   9340   10.4     3.3    315    49.7    33.6    148 
                                                -----                  -----
                Basin Index (%)                  114                    113 
 

SWEETWATER

 Deer Park                9700   31.5     8.6    366    46.5    26.4    176 
 Larsen Creek             9000     .3     2.4     12    27.6      -M       *
 South Pass               9040   28.1     3.3    852    36.6    22.8    161 
                                                -----                  -----
                Basin Index (%)                  419                    169 
 

LOWER N. PLATTE

 Casper Mtn.              7900    1.4     1.6     88    21.3    20.9    102 
 Laprele Creek            8375     .2      .0       *   17.5    17.2    102 
 Reno Hill                8400    2.1      .2   1050*   21.7    21.8    100 
 Windy Peak               7900    1.0      .0       *   18.0    15.3    118 
                                                -----                  -----
                Basin Index (%)                  261*                   104 
 

LARAMIE RIVER

 Brooklyn Lake           10240   13.2    12.8    103    29.2    27.6    106 
 Cinnabar Park            9574    6.4     8.5     75    29.2    29.8     98 
 Crow Creek               8330     -M      .0       *   15.8    15.6    101 
 Deadman Hill            10220   17.0    14.0    121    28.8    23.4    123 
 Rawah                    9020     .2      .0       *   22.2    19.1    116 
 Roach                    9700    9.5     8.3    114    28.4    25.0    114 
                                                -----                  -----
                Basin Index (%)                  106                    109 
 

S. PLATTE

 Black Mountain           8920    2.1      -M       *   20.6      -M       *
 Crow Creek               8330     -M      .0       *   15.8    15.6    101 
 Deadman Hill            10220   17.0    14.0    121    28.8    23.4    123 
                                                -----                  -----
                Basin Index (%)                  121*                   114 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   20.5    18.8    109 
 Divide Peak              8880     .0     2.2      0    28.0    26.7    105 
 Elk River                8700     .1      .0       *   24.6    24.8     99 
 Little Snake River       8915   11.9     8.8    135    45.3    35.6    127 
 Old Battle              10000   38.1    30.7    124    45.7    42.5    108 
 Sage Creek Basin         7850     -M      .0       *   19.1    17.6    109 
 Sandstone RS             8150     .0      .0       *   19.4    22.7     85 
 Whiskey Park             8950   15.3    17.5     87    37.3    34.1    109 
                                                -----                  -----
                Basin Index (%)                  110                    108 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   11.6      .2   5800*   27.0    17.2    157 
 Blind Bull Sum           8650     -M    17.6       *   39.7    23.7    168 
 East Rim Divide          7930     .1      .0       *   23.5    14.5    162 
 Elkhart Park G.S.        9400   10.7     3.7    289    27.6    17.1    161 
 Gros Ventre Summit       8750     -M     2.8       *     -M    16.4       *
 Gunsight Pass            9820   19.5     8.0    244    29.6    18.0    164 
 Kendall R.S.             7740     .0      .0       *   31.7    17.1    185 
 Loomis Park              8240   11.1      .1  11100*   35.4    20.9    169 
 New Fork Lake            8340     -M      .0       *   22.1    13.8    160 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     .0      .0       *   29.8    17.1    174 
 Spring Creek Divide      9000   37.0    17.5    211    45.8    28.5    161 
 Triple Peak              8500   20.6     4.5    458    45.6    30.7    149 
                                                -----                  -----
                Basin Index (%)                  325*                   164 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .0      -M       *   19.7      -M       *
 Buck Pasture             9632    2.3      -M       *   28.4      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   23.9      -M       *
 Hams Fork                7840     .0      .0       *   24.9    14.7    169 
 Hewinta                  9500     .0      .0       *   22.2    18.0    123 
 Hickerson Park           9122     .0      .0       *   16.3    13.8    118 
 Hole-in-Rock             9168     .0      .0       *   17.1    13.4    128 
 Indian Creek             9425   35.0    15.6    224    46.9    27.4    171 
 Kelley R.S.              8180    4.7      .3   1567*   35.4    22.2    159 
 Spirit Lk               10235    3.1      -M       *   22.5      -M       *
 Steel Creek Park        10158   15.7    12.8    123    26.6    21.4    124 
                                                -----                  -----
                Basin Index (%)                  193*                   145 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   22.2      -M       *
 Bug Lake                 7987   16.8      .3   5600*   38.9    23.8    163 
 Burts Miller Ranch       8000     .0      -M       *   12.4      -M       *
 Chalk Creek #1           9171   21.0    11.9    176    42.4    31.2    136 
 Hayden Fork              9130     .1      .0       *   33.2    26.2    127 
 Kelley R.S.              8180    4.7      .3   1567*   35.4    22.2    159 
 Lily Lake                9133     .0      .0       *   23.9    21.7    110 
 Monte Cristo             8932   26.7    10.8    247    46.4    32.0    145 
 Salt River Summit        7760     .1      .0       *   32.6    20.2    161 
                                                -----                  -----
                Basin Index (%)                  298*                   143 

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


 -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.