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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 1:38p, 5/26/18
Temperature 81.6°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 TUESDAY: MAY 9 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   14.2     5.0    284    42.2    23.6    179 
 Black Bear               8170   49.1    36.8    133    59.9    42.9    140 
 Blind Bull Sum           8650     -M    22.5       *   39.2    22.1    177 
 Cottonwood Creek         7670   24.7    13.1    189    44.1    28.6    154 
 East Rim Divide          7930    1.9     6.2     31    23.0    13.5    170 
 Grand Targhee            9260   57.4    46.4    124    51.5    35.9    143 
 Granite Creek            6770   16.0     5.9    271    38.4    22.0    175 
 Grassy Lake              7265   33.1    26.4    125    61.5    40.4    152 
 Gros Ventre Summit       8750   18.4     9.8    188    26.6    15.3    174 
 Gunsight Pass            9820   23.9    11.9    201    28.6    16.8    170 
 Lewis Lake Divide        7850   42.1    29.5    143    59.8    39.6    151 
 Phillips Bench           8200   37.5    23.3    161    50.8    31.7    160 
 Salt River Summit        7760   11.0     5.1    216    31.9    19.0    168 
 Snake River Station      6920    5.8     3.1    187    39.2    25.5    154 
 Spring Creek Divide      9000   44.3    23.8    186    44.8    27.0    166 
 Thumb Divide             7980   13.2     8.9    148    30.6    21.7    141 
 Togwotee Pass            9580   35.6    25.3    141    43.3    28.4    152 
 Two Ocean Plateau        9240     -M    29.7       *     -M    31.1       *
 Willow Creek             8380   23.8    21.3    112    57.7    39.0    148 
 Younts Peak              8350   15.6    15.5    101    33.7    18.4    183 
                                                -----                  -----
                Basin Index (%)                  147                    158 
 

MADISON-GALLATIN

 Black Bear               8170   49.1    36.8    133    59.9    42.9    140 
 Canyon                   7870   13.7     7.7    178    28.8    18.8    153 
 Madison Plateau          7750   24.4    20.4    120    40.0    29.9    134 
 West Yellowstone         6700     .0      .0       *   26.0    16.6    157 
 Whiskey Creek            6800    8.6    11.1     77    29.9    23.0    130 
                                                -----                  -----
                Basin Index (%)                  126                    141 
 

YELLOWSTONE

 Beartooth Lake           9360   34.7    23.0    151    31.8    23.0    138 
 Burnt Mtn                5880     .0      .0       *   18.6    17.0    109 
 Canyon                   7870   13.7     7.7    178    28.8    18.8    153 
 Cole Creek               7850   14.9    17.1     87    14.3    17.8     80 
 Evening Star             9200   36.1    25.3    143    49.5    31.7    156 
 Fisher Creek             9100   45.6    34.0    134    52.7    36.5    144 
 Northeast Entrance       7350     .0     1.0      0    23.1    14.5    159 
 Parker Peak              9400   39.9    21.8    183    40.1    21.1    190 
 Sylvan Lake              8420   25.9    18.1    143    42.1    26.2    161 
 Thumb Divide             7980   13.2     8.9    148    30.6    21.7    141 
 Two Ocean Plateau        9240     -M    29.7       *     -M    31.1       *
 White Mill               8700   38.8    24.6    158    40.0    27.4    146 
 Wolverine                7650     -M      .4       *   23.8    14.5    164 
                                                -----                  -----
                Basin Index (%)                  145                    146 
 

WIND RIVER

 Burroughs Creek          8750   14.8      -M       *   29.4      -M       *
 Castle Creek             8400    1.4      -M       *   17.9      -M       *
 Cold Springs             9630   12.0     1.7    706    22.5    13.3    169 
 Deer Park                9700   34.5    14.5    238    43.5    24.4    178 
 Hobbs Park              10100   34.0    15.9    214    34.5    17.7    195 
 Kirwin                   9550   23.0    10.9    211    29.3    14.7    199 
 Little Warm              9370   16.6     6.7    248    27.4    16.1    170 
 Owl Creek                8975    2.8      .6    467    15.5     8.5    182 
 South Pass               9040   31.8    12.2    261    33.8    21.2    159 
 St. Lawrence Alt         8620    4.6     1.4    329    20.8    12.3    169 
 Togwotee Pass            9580   35.6    25.3    141    43.3    28.4    152 
 Townsend Creek           8700   17.0     4.4    386    28.3    15.7    180 
                                                -----                  -----
                Basin Index (%)                  226                    173 
 

BIGHORN BASIN

 Bald Mtn.                9380   22.6    20.5    110    21.5    20.9    103 
 Bear Trap Meadow         8200    2.0      .2   1000*   14.9    11.5    130 
 Bone Springs Div         9350   21.9    16.5    133    21.7    19.5    111 
 Grave Springs            8550    9.1     7.9    115    13.6    13.9     98 
 Kirwin                   9550   23.0    10.9    211    29.3    14.7    199 
 Marquette                8760   17.6      -M       *   23.8      -M       *
 Middle Powder            7760   10.4    11.0     95    14.3    15.2     94 
 Owl Creek                8975    2.8      .6    467    15.5     8.5    182 
 Powder River Pass        9480    8.4     9.0     93    18.2    16.1    113 
 Shell Creek              9580   17.8    16.7    107    18.6    17.5    106 
 Timber Creek             7950    3.1     1.7    182    15.0    10.8    139 
                                                -----                  -----
                Basin Index (%)                  127                    123 
 

SHOSHONE RIVER

 Blackwater               9780   40.8    25.0    163    46.5    24.4    191 
 Evening Star             9200   36.1    25.3    143    49.5    31.7    156 
 Marquette                8760   17.6      -M       *   23.8      -M       *
 Sylvan Road              7120     .0     1.9      0    32.3    19.2    168 
 Younts Peak              8350   15.6    15.5    101    33.7    18.4    183 
                                                -----                  -----
                Basin Index (%)                  137                    173 
 

POWDER RIVER

 Bear Trap Meadow         8200    2.0      .2   1000*   14.9    11.5    130 
 Cloud Peak Reservoir     9860   19.6    16.7    117    26.5    18.0    147 
 Grave Springs            8550    9.1     7.9    115    13.6    13.9     98 
 Hansen Sawmill           8360   12.2     1.4    871    18.8    11.8    159 
 Middle Powder            7760   10.4    11.0     95    14.3    15.2     94 
 Powder River Pass        9480    8.4     9.0     93    18.2    16.1    113 
 Soldier Park             8720   14.3      -M       *   20.5      -M       *
                                                -----                  -----
                Basin Index (%)                  134                    123 
 

TONGUE RIVER

 Big Goose                7990   12.5    10.4    120    20.1    15.6    129 
 Bone Springs Div         9350   21.9    16.5    133    21.7    19.5    111 
 Burgess Junction         7880   11.2    11.5     97    16.0    15.9    101 
 Dome Lake                8880   17.5    11.2    156    22.0    17.8    124 
 Little Goose             8870   15.9      -M       *   24.0      -M       *
 Sucker Creek             8880   13.5    12.5    108    19.1    18.8    102 
 Tie Creek                6870     .2     1.7     12    19.9    15.7    127 
                                                -----                  -----
                Basin Index (%)                  120                    115 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   12.1    13.4     90 
                                                -----                  -----
                Basin Index (%)                     *                    90 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   11.6    15.3     76 
 North Rapid Creek        6130     .0      .0       *   10.0    13.2     76 
                                                -----                  -----
                Basin Index (%)                     *                    76 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.6    22.4    110    30.0    27.3    110 
 Blackhall Mtn            9820   35.2      -M       *   42.1      -M       *
 Columbine                9160    7.7    13.5     57    32.2    29.5    109 
 Divide Peak              8880    7.2    14.9     48    26.1    25.4    103 
 Joe Wright              10120   17.3    23.0     75    33.5    31.2    107 
 Laprele Creek            8375     .4     3.4     12    15.5    16.0     97 
 Med Bow                 10500   37.8      -M       *   41.3      -M       *
 North French Creek      10130   26.2    32.8     80    34.1    32.2    106 
 Never Summer            10280   24.1    22.1    109    22.7      -M       *
 Old Battle              10000   38.1    36.6    104    43.3    40.7    106 
 Rawah                    9020    1.2     3.0     40    20.8    18.0    116 
 Sage Creek Basin         7850     -M      .0       *   18.2    16.8    108 
 Sand Lake               10050   32.6    31.8    103    32.2    30.3    106 
 South Brush Creek        8440     .5     5.8      9    16.7    18.9     88 
 Tower                   10500   43.2    51.4     84    51.1    46.2    111 
 Webber Springs           9250   19.0    19.8     96    37.1    31.0    120 
 Willow Creek Pass        9540   17.0    13.7    124    20.6    16.4    126 
 Zirkel                   9340   19.8    19.9     99    46.8    32.2    145 
                                                -----                  -----
                Basin Index (%)                   89                    111 
 

SWEETWATER

 Deer Park                9700   34.5    14.5    238    43.5    24.4    178 
 Larsen Creek             9000    6.3     6.8     93    26.2      -M       *
 South Pass               9040   31.8    12.2    261    33.8    21.2    159 
                                                -----                  -----
                Basin Index (%)                  217                    170 
 

LOWER N. PLATTE

 Casper Mtn.              7900    9.1    11.7     78    19.0    19.3     98 
 Laprele Creek            8375     .4     3.4     12    15.5    16.0     97 
 Reno Hill                8400    9.2    11.0     84    19.1    20.0     96 
 Windy Peak               7900     .1     1.2      8    14.0    13.8    101 
                                                -----                  -----
                Basin Index (%)                   69                     98 
 

LARAMIE RIVER

 Brooklyn Lake           10240   18.7    21.7     86    26.9    25.9    104 
 Cinnabar Park            9574   12.1    17.8     68    26.9    28.2     95 
 Crow Creek               8330     .0      .0       *   12.5    14.2     88 
 Deadman Hill            10220   20.2    18.6    109    24.9    21.6    115 
 Rawah                    9020    1.2     3.0     40    20.8    18.0    116 
 Roach                    9700   14.2    16.2     88    25.3    23.2    109 
                                                -----                  -----
                Basin Index (%)                   86                    105 
 

S. PLATTE

 Black Mountain           8920    2.5      -M       *   16.4      -M       *
 Crow Creek               8330     .0      .0       *   12.5    14.2     88 
 Deadman Hill            10220   20.2    18.6    109    24.9    21.6    115 
                                                -----                  -----
                Basin Index (%)                  109*                   104 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.5    17.8    110 
 Divide Peak              8880    7.2    14.9     48    26.1    25.4    103 
 Elk River                8700     .1     8.6      1    23.2    23.6     98 
 Little Snake River       8915   19.7    20.7     95    43.7    34.3    127 
 Old Battle              10000   38.1    36.6    104    43.3    40.7    106 
 Sage Creek Basin         7850     -M      .0       *   18.2    16.8    108 
 Sandstone RS             8150     -M     2.2       *   19.5    21.7     90 
 Whiskey Park             8950   23.4    26.9     87    35.3    32.8    108 
                                                -----                  -----
                Basin Index (%)                   82                    107 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   18.8     8.6    219    25.8    16.0    161 
 Blind Bull Sum           8650     -M    22.5       *   39.2    22.1    177 
 East Rim Divide          7930    1.9     6.2     31    23.0    13.5    170 
 Elkhart Park G.S.        9400   17.4     9.7    179    26.7    15.8    169 
 Gros Ventre Summit       8750   18.4     9.8    188    26.6    15.3    174 
 Gunsight Pass            9820   23.9    11.9    201    28.6    16.8    170 
 Kendall R.S.             7740    9.1      .0       *   31.4    16.1    195 
 Loomis Park              8240   19.3     7.6    254    34.9    19.7    177 
 New Fork Lake            8340    6.7     3.0    223    20.2    12.7    159 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060    6.9     7.5     92    29.3    16.1    182 
 Spring Creek Divide      9000   44.3    23.8    186    44.8    27.0    166 
 Triple Peak              8500   31.7    15.1    210    44.9    29.0    155 
                                                -----                  -----
                Basin Index (%)                  192                    171 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .2      -M       *   18.8      -M       *
 Buck Pasture             9632   12.2      -M       *   27.5      -M       *
 EF Blacks Fork GS        9360    6.8      -M       *   22.1      -M       *
 Hams Fork                7840    1.8      .2    900*   23.9    13.7    174 
 Hewinta                  9500    1.1     2.4     46    21.0    17.0    124 
 Hickerson Park           9122     .2      .5     40*   14.9    12.7    117 
 Hole-in-Rock             9168     .0      .3      0*   15.8    12.2    130 
 Indian Creek             9425   40.0    21.0    190    45.1    25.9    174 
 Kelley R.S.              8180   15.1     8.6    176    33.9    20.9    162 
 Spirit Lk               10235   10.7      -M       *   21.0      -M       *
 Steel Creek Park        10158   19.8    17.8    111    25.3    20.0    126 
                                                -----                  -----
                Basin Index (%)                  154*                   147 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.3      -M       *
 Bug Lake                 7987   27.2    12.4    219    37.7    22.4    168 
 Burts Miller Ranch       8000     .0      -M       *   12.0      -M       *
 Chalk Creek #1           9171   31.3    21.9    143    41.1    29.6    139 
 Hayden Fork              9130    7.2     6.3    114    33.0    24.7    134 
 Kelley R.S.              8180   15.1     8.6    176    33.9    20.9    162 
 Lily Lake                9133    6.8     6.2    110    23.1    20.4    113 
 Monte Cristo             8932   34.8    22.0    158    44.7    30.4    147 
 Salt River Summit        7760   11.0     5.1    216    31.9    19.0    168 
                                                -----                  -----
                Basin Index (%)                  162                    147 

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


 -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.