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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 9:48a, 5/26/18
Temperature 73.8°F
Wind 0.0 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 SUNDAY: MAY 7 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   16.0     6.1    262    42.2    23.4    180 
 Black Bear               8170   50.1    37.0    135    59.8    42.6    140 
 Blind Bull Sum           8650     -M    22.6       *   39.1    21.9    179 
 Cottonwood Creek         7670   26.6    13.5    197    44.1    28.3    156 
 East Rim Divide          7930    4.1     6.9     59    22.6    13.3    170 
 Grand Targhee            9260   58.4    46.4    126    51.4    35.7    144 
 Granite Creek            6770   16.7     6.7    249    38.4    21.9    175 
 Grassy Lake              7265   35.3    27.0    131    61.5    40.1    153 
 Gros Ventre Summit       8750   19.1    10.2    187    26.5    15.1    175 
 Gunsight Pass            9820   24.8    11.7    212    28.2    16.5    171 
 Lewis Lake Divide        7850   44.5    29.4    151    59.8    39.3    152 
 Phillips Bench           8200   39.5    23.6    167    50.8    31.4    162 
 Salt River Summit        7760   13.4     6.2    216    31.9    18.8    170 
 Snake River Station      6920    8.3     4.0    208    39.3    25.3    155 
 Spring Creek Divide      9000   45.0    24.1    187    44.6    26.8    166 
 Thumb Divide             7980   15.3     9.7    158    30.5    21.5    142 
 Togwotee Pass            9580   35.9    25.0    144    43.1    28.1    153 
 Two Ocean Plateau        9240     -M    29.8       *     -M    30.8       *
 Willow Creek             8380   25.8    21.7    119    57.6    38.6    149 
 Younts Peak              8350   18.2    15.6    117    33.7    18.3    184 
                                                -----                  -----
                Basin Index (%)                  153                    159 
 

MADISON-GALLATIN

 Black Bear               8170   50.1    37.0    135    59.8    42.6    140 
 Canyon                   7870   15.5     8.2    189    28.9    18.5    156 
 Madison Plateau          7750   26.4    20.7    128    40.0    29.6    135 
 West Yellowstone         6700     .0      .0       *   26.0    16.4    159 
 Whiskey Creek            6800    9.8    11.9     82    29.9    22.8    131 
                                                -----                  -----
                Basin Index (%)                  131                    142 
 

YELLOWSTONE

 Beartooth Lake           9360   35.6    22.9    155    31.8    22.7    140 
 Burnt Mtn                5880     .0      .0       *   18.4    16.6    111 
 Canyon                   7870   15.5     8.2    189    28.9    18.5    156 
 Cole Creek               7850   16.8    16.9     99    14.3    17.2     83 
 Evening Star             9200   37.9    25.1    151    49.3    31.3    158 
 Fisher Creek             9100   46.8    33.4    140    52.7    36.1    146 
 Northeast Entrance       7350     .0     1.0      0    23.1    14.3    162 
 Parker Peak              9400   41.8    21.6    194    40.1    20.7    194 
 Sylvan Lake              8420   25.1    18.4    136    42.0    25.9    162 
 Thumb Divide             7980   15.3     9.7    158    30.5    21.5    142 
 Two Ocean Plateau        9240     -M    29.8       *     -M    30.8       *
 White Mill               8700   40.3    24.3    166    40.0    27.0    148 
 Wolverine                7650     -M      .5       *   23.8    14.2    168 
                                                -----                  -----
                Basin Index (%)                  152                    148 
 

WIND RIVER

 Burroughs Creek          8750   16.0      -M       *   29.3      -M       *
 Castle Creek             8400    2.8      -M       *   17.3      -M       *
 Cold Springs             9630   12.7     1.6    794    22.5    13.1    172 
 Deer Park                9700   35.2    14.7    239    43.4    24.2    179 
 Hobbs Park              10100   34.9    15.9    219    34.5    17.4    198 
 Kirwin                   9550   23.8    10.8    220    29.3    14.5    202 
 Little Warm              9370   17.2     7.1    242    27.2    15.9    171 
 Owl Creek                8975    4.2      .5    840*   15.3     8.4    182 
 South Pass               9040   32.7    13.1    250    33.8    21.0    161 
 St. Lawrence Alt         8620    6.2     1.5    413    20.6    12.1    170 
 Togwotee Pass            9580   35.9    25.0    144    43.1    28.1    153 
 Townsend Creek           8700   17.7     5.2    340    28.2    15.5    182 
                                                -----                  -----
                Basin Index (%)                  231                    175 
 

BIGHORN BASIN

 Bald Mtn.                9380   22.8    20.4    112    21.5    20.4    105 
 Bear Trap Meadow         8200    3.9      .2   1950*   14.9    11.3    132 
 Bone Springs Div         9350   22.7    16.4    138    21.7    19.0    114 
 Grave Springs            8550   10.1     8.5    119    13.7    13.6    101 
 Kirwin                   9550   23.8    10.8    220    29.3    14.5    202 
 Marquette                8760   18.9      -M       *   23.8      -M       *
 Middle Powder            7760   11.8    11.2    105    14.2    14.8     96 
 Owl Creek                8975    4.2      .5    840*   15.3     8.4    182 
 Powder River Pass        9480    9.8     9.0    109    18.2    15.8    115 
 Shell Creek              9580   18.5    16.4    113    18.5    17.0    109 
 Timber Creek             7950    4.5     1.9    237    15.0    10.6    142 
                                                -----                  -----
                Basin Index (%)                  139                    125 
 

SHOSHONE RIVER

 Blackwater               9780   41.5    25.5    163    46.4    24.2    192 
 Evening Star             9200   37.9    25.1    151    49.3    31.3    158 
 Marquette                8760   18.9      -M       *   23.8      -M       *
 Sylvan Road              7120     .0     2.9      0    32.3    19.0    170 
 Younts Peak              8350   18.2    15.6    117    33.7    18.3    184 
                                                -----                  -----
                Basin Index (%)                  141                    174 
 

POWDER RIVER

 Bear Trap Meadow         8200    3.9      .2   1950*   14.9    11.3    132 
 Cloud Peak Reservoir     9860   20.5    16.5    124    26.5    17.5    151 
 Grave Springs            8550   10.1     8.5    119    13.7    13.6    101 
 Hansen Sawmill           8360   13.2     1.5    880    18.9    11.4    166 
 Middle Powder            7760   11.8    11.2    105    14.2    14.8     96 
 Powder River Pass        9480    9.8     9.0    109    18.2    15.8    115 
 Soldier Park             8720   15.6      -M       *   20.5      -M       *
                                                -----                  -----
                Basin Index (%)                  148                    126 
 

TONGUE RIVER

 Big Goose                7990   13.4    10.1    133    20.1    15.1    133 
 Bone Springs Div         9350   22.7    16.4    138    21.7    19.0    114 
 Burgess Junction         7880   12.0    11.4    105    15.9    15.5    103 
 Dome Lake                8880   18.6    11.2    166    22.0    17.2    128 
 Little Goose             8870   16.9      -M       *   24.0      -M       *
 Sucker Creek             8880   14.4    12.1    119    19.1    18.3    104 
 Tie Creek                6870    1.7     2.1     81    19.7    15.1    130 
                                                -----                  -----
                Basin Index (%)                  131                    118 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   12.3    12.9     95 
                                                -----                  -----
                Basin Index (%)                     *                    95 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   11.6    14.9     78 
 North Rapid Creek        6130     .0      .0       *   10.0    12.9     78 
                                                -----                  -----
                Basin Index (%)                     *                    78 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.1    22.3    113    29.8    26.9    111 
 Blackhall Mtn            9820   35.9      -M       *     -M      -M       *
 Columbine                9160    9.7    15.1     64    32.2    29.3    110 
 Divide Peak              8880    9.2    16.3     56    26.1    25.0    104 
 Joe Wright              10120   18.0    22.9     79    33.4    30.8    108 
 Laprele Creek            8375    2.4     4.6     52    15.6    15.6    100 
 Med Bow                 10500   38.7      -M       *   41.2      -M       *
 North French Creek      10130   27.2    32.8     83    34.1    31.6    108 
 Never Summer            10280   24.5    22.0    111    22.7      -M       *
 Old Battle              10000   39.4    35.8    110    43.3    40.2    108 
 Rawah                    9020    2.8     3.8     74    20.7    17.8    116 
 Sage Creek Basin         7850     -M      .2       *   17.9    16.6    108 
 Sand Lake               10050   33.2    31.8    104    32.3    29.9    108 
 South Brush Creek        8440     .6     6.7      9    16.7    18.5     90 
 Tower                   10500   44.5    51.3     87    51.1    45.9    111 
 Webber Springs           9250   22.1    20.5    108    37.0    30.6    121 
 Willow Creek Pass        9540   18.1    14.3    127    20.6    16.2    127 
 Zirkel                   9340   22.0    20.2    109    46.8    31.8    147 
                                                -----                  -----
                Basin Index (%)                   93                    113 
 

SWEETWATER

 Deer Park                9700   35.2    14.7    239    43.4    24.2    179 
 Larsen Creek             9000    8.3     7.4    112    26.0      -M       *
 South Pass               9040   32.7    13.1    250    33.8    21.0    161 
                                                -----                  -----
                Basin Index (%)                  216                    171 
 

LOWER N. PLATTE

 Casper Mtn.              7900   11.0    11.9     92    18.8    18.9     99 
 Laprele Creek            8375    2.4     4.6     52    15.6    15.6    100 
 Reno Hill                8400   11.2    11.8     95    19.1    19.7     97 
 Windy Peak               7900     .7     2.0     35    14.1    13.5    104 
                                                -----                  -----
                Basin Index (%)                   83                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   19.8    22.2     89    26.8    25.5    105 
 Cinnabar Park            9574   12.9    18.1     71    26.8    27.9     96 
 Crow Creek               8330     .0      .0       *   12.3    14.1     87 
 Deadman Hill            10220   21.3    18.9    113    24.9    21.3    117 
 Rawah                    9020    2.8     3.8     74    20.7    17.8    116 
 Roach                    9700   15.2    16.6     92    25.3    23.0    110 
                                                -----                  -----
                Basin Index (%)                   90                    106 
 

S. PLATTE

 Black Mountain           8920    4.8      -M       *   16.4      -M       *
 Crow Creek               8330     .0      .0       *   12.3    14.1     87 
 Deadman Hill            10220   21.3    18.9    113    24.9    21.3    117 
                                                -----                  -----
                Basin Index (%)                  113*                   105 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.5    17.5    111 
 Divide Peak              8880    9.2    16.3     56    26.1    25.0    104 
 Elk River                8700    1.2    10.1     12    23.1    23.4     99 
 Little Snake River       8915   21.2    21.0    101    43.6    33.7    129 
 Old Battle              10000   39.4    35.8    110    43.3    40.2    108 
 Sage Creek Basin         7850     -M      .2       *   17.9    16.6    108 
 Sandstone RS             8150     -M     3.2       *   19.4    21.3     91 
 Whiskey Park             8950   23.3    27.1     86    35.3    32.3    109 
                                                -----                  -----
                Basin Index (%)                   85                    109 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.0     8.7    230    25.7    15.8    163 
 Blind Bull Sum           8650     -M    22.6       *   39.1    21.9    179 
 East Rim Divide          7930    4.1     6.9     59    22.6    13.3    170 
 Elkhart Park G.S.        9400   18.8    10.0    188    26.3    15.6    169 
 Gros Ventre Summit       8750   19.1    10.2    187    26.5    15.1    175 
 Gunsight Pass            9820   24.8    11.7    212    28.2    16.5    171 
 Kendall R.S.             7740    9.9      .7   1414*   30.6    15.9    192 
 Loomis Park              8240   20.2     8.4    240    34.6    19.5    177 
 New Fork Lake            8340    8.0     4.0    200    19.9    12.6    158 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     -M     7.9       *   29.3    16.0    183 
 Spring Creek Divide      9000   45.0    24.1    187    44.6    26.8    166 
 Triple Peak              8500   33.9    15.4    220    44.9    28.7    156 
                                                -----                  -----
                Basin Index (%)                  204                    171 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .9      -M       *   18.8      -M       *
 Buck Pasture             9632   13.7      -M       *   27.3      -M       *
 EF Blacks Fork GS        9360    8.9      -M       *   21.7      -M       *
 Hams Fork                7840    4.4      .5    880*   23.9    13.5    177 
 Hewinta                  9500    3.4     3.4    100    21.0    16.8    125 
 Hickerson Park           9122     .3     1.8     17    14.9    12.5    119 
 Hole-in-Rock             9168     .0     1.0      0    15.7    12.0    131 
 Indian Creek             9425   41.5    21.3    195    45.1    25.6    176 
 Kelley R.S.              8180   17.6     9.2    191    33.7    20.7    163 
 Spirit Lk               10235   13.1      -M       *   21.0      -M       *
 Steel Creek Park        10158   21.0    17.6    119    25.3    19.8    128 
                                                -----                  -----
                Basin Index (%)                  161                    149 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.3      -M       *
 Bug Lake                 7987   30.0    12.8    234    37.7    22.3    169 
 Burts Miller Ranch       8000     .0      -M       *   12.0      -M       *
 Chalk Creek #1           9171   33.0    22.5    147    41.1    29.3    140 
 Hayden Fork              9130    9.2     7.1    130    33.2    24.5    136 
 Kelley R.S.              8180   17.6     9.2    191    33.7    20.7    163 
 Lily Lake                9133    8.8     7.8    113    23.0    20.2    114 
 Monte Cristo             8932   36.9    23.3    158    44.7    30.1    149 
 Salt River Summit        7760   13.4     6.2    216    31.9    18.8    170 
                                                -----                  -----
                Basin Index (%)                  167                    148 

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


 -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.