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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 10:58a, 5/23/18
Temperature 61.8°F
Wind 5.0 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 MONDAY: MAY 22 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    6.9      .0       *   43.2    24.7    175 
 Black Bear               8170   44.9    32.7    137    61.7    44.9    137 
 Blind Bull Sum           8650     -M    18.8       *   39.6    23.4    169 
 Cottonwood Creek         7670   17.5     4.4    398    45.1    30.3    149 
 East Rim Divide          7930     .0      .0       *   23.5    14.3    164 
 Grand Targhee            9260   56.1    41.6    135    52.9    37.1    143 
 Granite Creek            6770    5.0      .0       *   38.6    23.1    167 
 Grassy Lake              7265   23.9    15.4    155    62.5    42.1    148 
 Gros Ventre Summit       8750     -M     4.2       *     -M    16.3       *
 Gunsight Pass            9820   20.2     9.3    217    29.6    17.8    166 
 Lewis Lake Divide        7850   34.1    21.0    162    60.1    41.2    146 
 Phillips Bench           8200   31.3    17.6    178    51.4    33.1    155 
 Salt River Summit        7760    2.5      .0       *   32.6    20.1    162 
 Snake River Station      6920     .0      .0       *   39.6    26.7    148 
 Spring Creek Divide      9000   37.8    19.0    199    45.9    28.3    162 
 Thumb Divide             7980    2.5      .3    833*   31.2    22.9    136 
 Togwotee Pass            9580   32.8    22.8    144    44.5    29.9    149 
 Two Ocean Plateau        9240     -M    28.0       *     -M    33.1       *
 Willow Creek             8380     -M    14.7       *   59.4    41.2    144 
 Younts Peak              8350     .3    11.1      3    33.6    19.8    170 
                                                -----                  -----
                Basin Index (%)                  162                    153 
 

MADISON-GALLATIN

 Black Bear               8170   44.9    32.7    137    61.7    44.9    137 
 Canyon                   7870    7.9     1.1    718*   29.7    20.0    148 
 Madison Plateau          7750   19.1    13.3    144    41.4    31.8    130 
 West Yellowstone         6700     .0      .0       *   26.8    17.7    151 
 Whiskey Creek            6800    3.3     4.3     77    30.7    24.5    125 
                                                -----                  -----
                Basin Index (%)                  146                    137 
 

YELLOWSTONE

 Beartooth Lake           9360   33.4    21.1    158    33.0    24.3    136 
 Burnt Mtn                5880    1.4      .0       *   23.3    19.3    121 
 Canyon                   7870    7.9     1.1    718*   29.7    20.0    148 
 Cole Creek               7850   16.0    15.2    105    19.3    19.7     98 
 Evening Star             9200   35.3    23.0    153    50.9    33.6    151 
 Fisher Creek             9100   47.9    32.2    149    53.5    38.6    139 
 Northeast Entrance       7350     .0      .0       *   23.8    15.7    152 
 Parker Peak              9400   35.2    19.4    181    41.4    22.6    183 
 Sylvan Lake              8420   16.1    14.2    113    43.5    27.9    156 
 Thumb Divide             7980    2.5      .3    833*   31.2    22.9    136 
 Two Ocean Plateau        9240     -M    28.0       *     -M    33.1       *
 White Mill               8700   32.2    21.6    149    40.6    29.2    139 
 Wolverine                7650     -M      .0       *   24.7    15.7    157 
                                                -----                  -----
                Basin Index (%)                  154                    143 
 

WIND RIVER

 Burroughs Creek          8750    7.7      -M       *   29.6      -M       *
 Castle Creek             8400     .0      -M       *   18.7      -M       *
 Cold Springs             9630    6.6      .0       *   24.4    14.5    168 
 Deer Park                9700   31.6     9.5    333    46.2    26.1    177 
 Hobbs Park              10100   31.8    12.2    261    36.9    19.5    189 
 Kirwin                   9550   19.3     7.5    257    30.6    16.1    190 
 Little Warm              9370   11.7     1.5    780    28.1    17.5    161 
 Owl Creek                8975     .2      .0       *   17.0     9.8    173 
 South Pass               9040   29.3     4.9    598    36.0    22.6    159 
 St. Lawrence Alt         8620    1.3      .0       *   22.5    13.6    165 
 Togwotee Pass            9580   32.8    22.8    144    44.5    29.9    149 
 Townsend Creek           8700   13.2      .0       *   30.6    17.2    178 
                                                -----                  -----
                Basin Index (%)                  304                    170 
 

BIGHORN BASIN

 Bald Mtn.                9380   20.5    18.4    111    22.9    22.2    103 
 Bear Trap Meadow         8200     .0      .0       *   16.8    12.8    131 
 Bone Springs Div         9350   18.0    13.7    131    23.1    21.1    109 
 Grave Springs            8550    4.4      .9    489*   15.3    15.1    101 
 Kirwin                   9550   19.3     7.5    257    30.6    16.1    190 
 Marquette                8760   15.7      -M       *   26.2      -M       *
 Middle Powder            7760    3.0     3.5     86    15.4    16.4     94 
 Owl Creek                8975     .2      .0       *   17.0     9.8    173 
 Powder River Pass        9480    3.6     4.0     90    18.9    17.5    108 
 Shell Creek              9580   14.2    14.6     97    19.3    18.7    103 
 Timber Creek             7950    1.6      .0       *   17.8    12.4    144 
                                                -----                  -----
                Basin Index (%)                  135                    122 
 

SHOSHONE RIVER

 Blackwater               9780   40.1    23.8    168    48.2    26.2    184 
 Evening Star             9200   35.3    23.0    153    50.9    33.6    151 
 Marquette                8760   15.7      -M       *   26.2      -M       *
 Sylvan Road              7120     .0      .0       *   33.3    20.5    162 
 Younts Peak              8350     .3    11.1      3    33.6    19.8    170 
                                                -----                  -----
                Basin Index (%)                  131                    166 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .0       *   16.8    12.8    131 
 Cloud Peak Reservoir     9860   18.1    13.8    131    28.1    19.8    142 
 Grave Springs            8550    4.4      .9    489*   15.3    15.1    101 
 Hansen Sawmill           8360    6.6      .0       *   18.8    13.1    144 
 Middle Powder            7760    3.0     3.5     86    15.4    16.4     94 
 Powder River Pass        9480    3.6     4.0     90    18.9    17.5    108 
 Soldier Park             8720    8.0      -M       *   22.4      -M       *
                                                -----                  -----
                Basin Index (%)                  161*                   120 
 

TONGUE RIVER

 Big Goose                7990    8.3     2.9    286    21.2    17.3    123 
 Bone Springs Div         9350   18.0    13.7    131    23.1    21.1    109 
 Burgess Junction         7880    6.3     6.9     91    17.2    17.2    100 
 Dome Lake                8880   13.9     4.7    296    24.3    19.2    127 
 Little Goose             8870   11.5      -M       *   25.5      -M       *
 Sucker Creek             8880   10.4     7.6    137    20.9    20.5    102 
 Tie Creek                6870    1.8      .0       *   24.2    17.4    139 
                                                -----                  -----
                Basin Index (%)                  164                    116 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   13.5    15.0     90 
                                                -----                  -----
                Basin Index (%)                     *                    90 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   14.1    17.0     83 
 North Rapid Creek        6130     .0      .0       *   12.3    14.7     84 
                                                -----                  -----
                Basin Index (%)                     *                    83 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   21.5    16.5    130    32.2    28.5    113 
 Blackhall Mtn            9820   29.2      -M       *   43.9      -M       *
 Columbine                9160     .8      .6    133*   34.5    30.7    112 
 Divide Peak              8880     .4     3.9     10    27.4    26.6    103 
 Joe Wright              10120   15.3    20.2     76    36.3    33.0    110 
 Laprele Creek            8375     .3      .0       *   17.0    17.0    100 
 Med Bow                 10500   36.1      -M       *   42.7      -M       *
 North French Creek      10130   22.0    28.2     78    35.6    33.9    105 
 Never Summer            10280   21.8    19.2    114    24.7      -M       *
 Old Battle              10000   37.7    31.8    119    45.0    42.3    106 
 Rawah                    9020     .7      .3    233*   22.1    18.9    117 
 Sage Creek Basin         7850     -M      .0       *   19.0    17.5    109 
 Sand Lake               10050   30.8    27.0    114    34.1    32.1    106 
 South Brush Creek        8440     .0      .0       *   16.3    20.3     80 
 Tower                   10500   40.9    46.9     87    54.5    48.1    113 
 Webber Springs           9250   12.0     9.9    121    39.2    32.2    122 
 Willow Creek Pass        9540   12.5     8.2    152    22.3    17.5    127 
 Zirkel                   9340   11.0     6.5    169    49.4    33.4    148 
                                                -----                  -----
                Basin Index (%)                  104                    112 
 

SWEETWATER

 Deer Park                9700   31.6     9.5    333    46.2    26.1    177 
 Larsen Creek             9000     .6     3.0     20    27.7      -M       *
 South Pass               9040   29.3     4.9    598    36.0    22.6    159 
                                                -----                  -----
                Basin Index (%)                  353                    169 
 

LOWER N. PLATTE

 Casper Mtn.              7900    1.8     2.9     62    21.0    20.6    102 
 Laprele Creek            8375     .3      .0       *   17.0    17.0    100 
 Reno Hill                8400    2.0     1.7    118    21.1    21.6     98 
 Windy Peak               7900    1.3      .0       *   17.7    15.1    117 
                                                -----                  -----
                Basin Index (%)                  117                    103 
 

LARAMIE RIVER

 Brooklyn Lake           10240   12.9    14.6     88    28.6    27.4    104 
 Cinnabar Park            9574    6.5    10.5     62    29.0    29.6     98 
 Crow Creek               8330     -M      .0       *   15.6    15.2    103 
 Deadman Hill            10220   16.4    15.3    107    28.4    23.2    122 
 Rawah                    9020     .7      .3    233*   22.1    18.9    117 
 Roach                    9700    9.5    10.0     95    28.1    24.8    113 
                                                -----                  -----
                Basin Index (%)                   91                    109 
 

S. PLATTE

 Black Mountain           8920    2.4      -M       *   20.2      -M       *
 Crow Creek               8330     -M      .0       *   15.6    15.2    103 
 Deadman Hill            10220   16.4    15.3    107    28.4    23.2    122 
                                                -----                  -----
                Basin Index (%)                  107*                   115 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   20.4    18.7    109 
 Divide Peak              8880     .4     3.9     10    27.4    26.6    103 
 Elk River                8700     .2      .0       *   24.5    24.7     99 
 Little Snake River       8915   12.3    11.0    112    44.9    35.2    128 
 Old Battle              10000   37.7    31.8    119    45.0    42.3    106 
 Sage Creek Basin         7850     -M      .0       *   19.0    17.5    109 
 Sandstone RS             8150     .0      .0       *   19.4    22.6     86 
 Whiskey Park             8950   17.0    20.0     85    37.1    34.0    109 
                                                -----                  -----
                Basin Index (%)                  101                    107 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   13.0     1.1   1182*   27.1    17.0    159 
 Blind Bull Sum           8650     -M    18.8       *   39.6    23.4    169 
 East Rim Divide          7930     .0      .0       *   23.5    14.3    164 
 Elkhart Park G.S.        9400   12.2     4.7    260    27.7    17.0    163 
 Gros Ventre Summit       8750     -M     4.2       *     -M    16.3       *
 Gunsight Pass            9820   20.2     9.3    217    29.6    17.8    166 
 Kendall R.S.             7740     .0      .0       *   31.7    16.9    188 
 Loomis Park              8240   13.3     1.0   1330*   35.4    20.7    171 
 New Fork Lake            8340     -M      .0       *   21.7    13.7    158 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     -M      .0       *   29.7    16.9    176 
 Spring Creek Divide      9000   37.8    19.0    199    45.9    28.3    162 
 Triple Peak              8500   23.4     6.4    366    45.5    30.4    150 
                                                -----                  -----
                Basin Index (%)                  289*                   165 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .0      -M       *   19.7      -M       *
 Buck Pasture             9632    4.7      -M       *   28.4      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   23.9      -M       *
 Hams Fork                7840     .0      .0       *   24.8    14.6    170 
 Hewinta                  9500     .0      .0       *   22.2    17.9    124 
 Hickerson Park           9122     .2      .0       *   16.3    13.6    120 
 Hole-in-Rock             9168     .0      .0       *   17.2    13.2    130 
 Indian Creek             9425   35.7    17.0    210    46.8    27.2    172 
 Kelley R.S.              8180    7.2     1.2    600*   35.3    22.0    160 
 Spirit Lk               10235    4.6      -M       *   22.5      -M       *
 Steel Creek Park        10158   16.4    13.7    120    26.6    21.2    125 
                                                -----                  -----
                Basin Index (%)                  187*                   146 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   22.1      -M       *
 Bug Lake                 7987   20.3     2.5    812    38.9    23.7    164 
 Burts Miller Ranch       8000     .0      -M       *   12.3      -M       *
 Chalk Creek #1           9171   23.6    13.7    172    42.4    31.1    136 
 Hayden Fork              9130     .2      .0       *   33.3    26.0    128 
 Kelley R.S.              8180    7.2     1.2    600*   35.3    22.0    160 
 Lily Lake                9133     .0      .0       *   23.9    21.5    111 
 Monte Cristo             8932   27.9    12.9    216    46.3    31.8    146 
 Salt River Summit        7760    2.5      .0       *   32.6    20.1    162 
                                                -----                  -----
                Basin Index (%)                  270*                   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.