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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 3:23p, 5/27/18
Temperature 59.5°F
Wind 1.0 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 WEDNESDAY: MAY 17 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    7.7      .0       *   42.3    24.2    175 
 Black Bear               8170   44.9    35.3    127    60.6    44.3    137 
 Blind Bull Sum           8650     -M    21.5       *   39.3    23.0    171 
 Cottonwood Creek         7670   18.1     8.9    203    44.2    29.6    149 
 East Rim Divide          7930     .0     2.6      0    23.1    14.0    165 
 Grand Targhee            9260   54.7    44.0    124    52.2    36.7    142 
 Granite Creek            6770    8.9      .0       *   38.5    22.7    170 
 Grassy Lake              7265   25.0    20.4    123    61.8    41.5    149 
 Gros Ventre Summit       8750     -M     7.6       *     -M    15.9       *
 Gunsight Pass            9820   19.6    11.7    168    28.7    17.5    164 
 Lewis Lake Divide        7850   36.5    24.5    149    59.8    40.6    147 
 Phillips Bench           8200   31.7    21.0    151    51.2    32.6    157 
 Salt River Summit        7760    3.0      .6    500*   32.0    19.7    162 
 Snake River Station      6920     .0      .0       *   39.3    26.2    150 
 Spring Creek Divide      9000   37.5    22.0    170    45.2    27.8    163 
 Thumb Divide             7980    4.3     3.6    119    30.7    22.5    136 
 Togwotee Pass            9580   31.6    23.8    133    43.4    29.3    148 
 Two Ocean Plateau        9240     -M    29.0       *     -M    32.4       *
 Willow Creek             8380     -M    18.8       *   58.1    40.4    144 
 Younts Peak              8350    2.1    12.9     16    33.8    19.2    176 
                                                -----                  -----
                Basin Index (%)                  141                    153 
 

MADISON-GALLATIN

 Black Bear               8170   44.9    35.3    127    60.6    44.3    137 
 Canyon                   7870    8.1     4.2    193    28.9    19.6    147 
 Madison Plateau          7750   18.9    15.9    119    40.6    31.1    131 
 West Yellowstone         6700     .0      .0       *   26.3    17.4    151 
 Whiskey Creek            6800    4.3     7.6     57    30.1    24.0    125 
                                                -----                  -----
                Basin Index (%)                  121                    137 
 

YELLOWSTONE

 Beartooth Lake           9360   32.6    22.3    146    31.9    23.9    133 
 Burnt Mtn                5880     .0      .0       *   18.7    18.9     99 
 Canyon                   7870    8.1     4.2    193    28.9    19.6    147 
 Cole Creek               7850   11.3    16.8     67    14.5    19.2     76 
 Evening Star             9200   34.5    24.9    139    49.6    32.9    151 
 Fisher Creek             9100   46.1    33.6    137    53.0    37.9    140 
 Northeast Entrance       7350     .0      .0       *   23.3    15.3    152 
 Parker Peak              9400   33.9    20.9    162    40.1    22.1    181 
 Sylvan Lake              8420   15.8    16.3     97    42.2    27.2    155 
 Thumb Divide             7980    4.3     3.6    119    30.7    22.5    136 
 Two Ocean Plateau        9240     -M    29.0       *     -M    32.4       *
 White Mill               8700   33.2    23.7    140    40.1    28.6    140 
 Wolverine                7650     .0      .0       *   23.8    15.3    156 
                                                -----                  -----
                Basin Index (%)                  132                    140 
 

WIND RIVER

 Burroughs Creek          8750    8.3      -M       *   29.4      -M       *
 Castle Creek             8400     .0      -M       *   17.9      -M       *
 Cold Springs             9630    4.6      .0       *   22.5    14.2    158 
 Deer Park                9700   30.1    12.4    243    44.1    25.7    172 
 Hobbs Park              10100   29.9    14.4    208    34.9    19.0    184 
 Kirwin                   9550   18.4     9.7    190    29.4    15.6    188 
 Little Warm              9370   11.4     4.9    233    27.6    17.1    161 
 Owl Creek                8975     .0      .0       *   15.6     9.4    166 
 South Pass               9040   27.1     9.2    295    34.0    22.2    153 
 St. Lawrence Alt         8620     .0      .0       *   20.9    13.2    158 
 Togwotee Pass            9580   31.6    23.8    133    43.4    29.3    148 
 Townsend Creek           8700   11.6      .3   3867*   28.6    16.8    170 
                                                -----                  -----
                Basin Index (%)                  220                    165 
 

BIGHORN BASIN

 Bald Mtn.                9380   19.5    20.3     96    21.7    21.8    100 
 Bear Trap Meadow         8200     .0      .0       *   15.4    12.4    124 
 Bone Springs Div         9350   17.8    15.3    116    22.5    20.5    110 
 Grave Springs            8550    4.7     5.2     90    13.9    14.8     94 
 Kirwin                   9550   18.4     9.7    190    29.4    15.6    188 
 Marquette                8760   13.2      -M       *   23.9      -M       *
 Middle Powder            7760    4.4     7.7     57    15.1    16.0     94 
 Owl Creek                8975     .0      .0       *   15.6     9.4    166 
 Powder River Pass        9480    3.5     7.4     47    18.3    17.0    108 
 Shell Creek              9580   14.0    16.1     87    18.9    18.3    103 
 Timber Creek             7950     .0      .0       *   15.2    11.9    128 
                                                -----                  -----
                Basin Index (%)                  101                    118 
 

SHOSHONE RIVER

 Blackwater               9780   38.7    24.9    155    46.7    25.6    182 
 Evening Star             9200   34.5    24.9    139    49.6    32.9    151 
 Marquette                8760   13.2      -M       *   23.9      -M       *
 Sylvan Road              7120     .0      .0       *   32.5    20.0    162 
 Younts Peak              8350    2.1    12.9     16    33.8    19.2    176 
                                                -----                  -----
                Basin Index (%)                  120                    166 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .0       *   15.4    12.4    124 
 Cloud Peak Reservoir     9860   16.8    15.8    106    26.6    19.3    138 
 Grave Springs            8550    4.7     5.2     90    13.9    14.8     94 
 Hansen Sawmill           8360    6.3      .0       *   20.0    12.6    159 
 Middle Powder            7760    4.4     7.7     57    15.1    16.0     94 
 Powder River Pass        9480    3.5     7.4     47    18.3    17.0    108 
 Soldier Park             8720    7.4      -M       *   20.8      -M       *
                                                -----                  -----
                Basin Index (%)                   99                    119 
 

TONGUE RIVER

 Big Goose                7990    7.6     7.5    101    20.3    16.8    121 
 Bone Springs Div         9350   17.8    15.3    116    22.5    20.5    110 
 Burgess Junction         7880    6.2     9.8     63    16.3    16.7     98 
 Dome Lake                8880   13.3     8.5    156    22.8    18.7    122 
 Little Goose             8870   10.6      -M       *   24.4      -M       *
 Sucker Creek             8880    9.4    10.3     91    19.3    19.9     97 
 Tie Creek                6870     .1      .0       *   20.2    16.9    120 
                                                -----                  -----
                Basin Index (%)                  106                    111 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   12.7    14.6     87 
                                                -----                  -----
                Basin Index (%)                     *                    87 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   13.6    16.4     83 
 North Rapid Creek        6130     .0      .0       *   11.5    14.3     80 
                                                -----                  -----
                Basin Index (%)                     *                    82 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   20.3    20.5     99    30.4    28.4    107 
 Blackhall Mtn            9820   27.9      -M       *   42.1      -M       *
 Columbine                9160     .0     6.4      0    32.3    30.4    106 
 Divide Peak              8880     .0     8.6      0    26.5    26.2    101 
 Joe Wright              10120   13.2    22.3     59    33.9    32.5    104 
 Laprele Creek            8375     .1      .0       *   15.7    16.6     95 
 Med Bow                 10500   34.9      -M       *   41.4      -M       *
 North French Creek      10130   21.5    31.3     69    34.4    33.4    103 
 Never Summer            10280   20.9    21.7     96    23.3      -M       *
 Old Battle              10000   35.2    33.9    104    43.5    41.8    104 
 Rawah                    9020     .1      .9     11*   20.8    18.8    111 
 Sage Creek Basin         7850     -M      .0       *   18.4    17.2    107 
 Sand Lake               10050   29.6    29.3    101    32.3    31.5    103 
 South Brush Creek        8440     .0      .5      0*   16.4    19.8     83 
 Tower                   10500   37.0    49.0     76    51.9    47.5    109 
 Webber Springs           9250   11.5    14.8     78    37.5    31.8    118 
 Willow Creek Pass        9540   11.9    10.6    112    21.0    17.1    123 
 Zirkel                   9340   11.0    14.3     77    47.3    33.3    142 
                                                -----                  -----
                Basin Index (%)                   80                    108 
 

SWEETWATER

 Deer Park                9700   30.1    12.4    243    44.1    25.7    172 
 Larsen Creek             9000     .4     4.5      9    26.7      -M       *
 South Pass               9040   27.1     9.2    295    34.0    22.2    153 
                                                -----                  -----
                Basin Index (%)                  221                    163 
 

LOWER N. PLATTE

 Casper Mtn.              7900     .5     7.4      7    19.9    20.1     99 
 Laprele Creek            8375     .1      .0       *   15.7    16.6     95 
 Reno Hill                8400     .8     6.4     12    19.8    21.0     94 
 Windy Peak               7900     .0      .0       *   15.2    14.4    106 
                                                -----                  -----
                Basin Index (%)                   10                     98 
 

LARAMIE RIVER

 Brooklyn Lake           10240   12.4    18.7     66    26.9    26.9    100 
 Cinnabar Park            9574    5.5    14.4     38    27.1    29.4     92 
 Crow Creek               8330     -M      .0       *   12.4    15.0     83 
 Deadman Hill            10220   14.3    17.9     80    25.2    22.7    111 
 Rawah                    9020     .1      .9     11*   20.8    18.8    111 
 Roach                    9700    7.9    13.1     60    25.8    24.3    106 
                                                -----                  -----
                Basin Index (%)                   62                    101 
 

S. PLATTE

 Black Mountain           8920     -M      -M       *   16.8      -M       *
 Crow Creek               8330     -M      .0       *   12.4    15.0     83 
 Deadman Hill            10220   14.3    17.9     80    25.2    22.7    111 
                                                -----                  -----
                Basin Index (%)                   80*                   100 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.6    18.5    106 
 Divide Peak              8880     .0     8.6      0    26.5    26.2    101 
 Elk River                8700     .0     1.2      0*   23.3    24.4     95 
 Little Snake River       8915   11.9    16.5     72    43.8    35.0    125 
 Old Battle              10000   35.2    33.9    104    43.5    41.8    104 
 Sage Creek Basin         7850     -M      .0       *   18.4    17.2    107 
 Sandstone RS             8150     .0      .0       *   19.4    22.3     87 
 Whiskey Park             8950   15.7    23.8     66    35.5    33.7    105 
                                                -----                  -----
                Basin Index (%)                   75                    105 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   12.8     6.1    210    26.3    16.6    158 
 Blind Bull Sum           8650     -M    21.5       *   39.3    23.0    171 
 East Rim Divide          7930     .0     2.6      0    23.1    14.0    165 
 Elkhart Park G.S.        9400   12.2     7.5    163    26.9    16.5    163 
 Gros Ventre Summit       8750     -M     7.6       *     -M    15.9       *
 Gunsight Pass            9820   19.6    11.7    168    28.7    17.5    164 
 Kendall R.S.             7740     .0      .0       *   31.4    16.6    189 
 Loomis Park              8240   13.4     4.8    279    35.3    20.4    173 
 New Fork Lake            8340     .0      .4      0*   21.3    13.4    159 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     .0     2.9      0    29.4    16.6    177 
 Spring Creek Divide      9000   37.5    22.0    170    45.2    27.8    163 
 Triple Peak              8500   23.7    11.1    214    44.9    30.0    150 
                                                -----                  -----
                Basin Index (%)                  173                    166 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .0      -M       *   19.2      -M       *
 Buck Pasture             9632    4.6      -M       *   27.7      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   23.3      -M       *
 Hams Fork                7840     .0      .0       *   24.0    14.2    169 
 Hewinta                  9500     .0      .0       *   21.2    17.6    120 
 Hickerson Park           9122     .1      .0       *   15.0    13.3    113 
 Hole-in-Rock             9168     .0      .0       *   15.8    12.8    123 
 Indian Creek             9425   34.3    20.5    167    45.5    26.8    170 
 Kelley R.S.              8180    7.3     5.1    143    34.4    21.6    159 
 Spirit Lk               10235    3.1      -M       *   21.1      -M       *
 Steel Creek Park        10158   15.5    15.8     98    25.6    20.8    123 
                                                -----                  -----
                Basin Index (%)                  138*                   143 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.5      -M       *
 Bug Lake                 7987   19.6     8.4    233    38.1    23.2    164 
 Burts Miller Ranch       8000     .0      -M       *   11.9      -M       *
 Chalk Creek #1           9171   23.1    18.0    128    41.4    30.6    135 
 Hayden Fork              9130     .2     1.1     18*   32.6    25.6    127 
 Kelley R.S.              8180    7.3     5.1    143    34.4    21.6    159 
 Lily Lake                9133     .0      .0       *   23.1    21.2    109 
 Monte Cristo             8932   26.9    17.5    154    45.0    31.4    143 
 Salt River Summit        7760    3.0      .6    500*   32.0    19.7    162 
                                                -----                  -----
                Basin Index (%)                  158*                   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.