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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 6:12a, 8/16/18
Temperature 52.3°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 WEDNESDAY: MAY 10 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   13.4     4.4    305    42.3    23.6    179 
 Black Bear               8170   48.3    36.8    131    59.9    43.1    139 
 Blind Bull Sum           8650     -M    22.4       *   39.2    22.2    177 
 Cottonwood Creek         7670   24.0    12.8    188    44.1    28.8    153 
 East Rim Divide          7930     .4     5.9      7    23.1    13.5    171 
 Grand Targhee            9260   57.0    46.4    123    51.7    36.1    143 
 Granite Creek            6770   16.0     5.5    291    38.4    22.1    174 
 Grassy Lake              7265   31.5    25.9    122    61.5    40.6    151 
 Gros Ventre Summit       8750   17.7     9.6    184    26.7    15.4    173 
 Gunsight Pass            9820   23.5    12.1    194    28.6    16.9    169 
 Lewis Lake Divide        7850   41.5    29.3    142    59.8    39.7    151 
 Phillips Bench           8200   36.7    23.1    159    50.8    31.8    160 
 Salt River Summit        7760   10.1     4.5    224    32.0    19.1    168 
 Snake River Station      6920    4.9     2.5    196    39.2    25.6    153 
 Spring Creek Divide      9000   43.3    23.7    183    44.9    27.1    166 
 Thumb Divide             7980   12.1     8.4    144    30.6    21.8    140 
 Togwotee Pass            9580   35.0    25.4    138    43.3    28.5    152 
 Two Ocean Plateau        9240     -M    29.6       *     -M    31.2       *
 Willow Creek             8380   22.9    21.1    109    57.7    39.2    147 
 Younts Peak              8350   14.0    15.4     91    33.8    18.5    183 
                                                -----                  -----
                Basin Index (%)                  145                    157 
 

MADISON-GALLATIN

 Black Bear               8170   48.3    36.8    131    59.9    43.1    139 
 Canyon                   7870   13.6     7.4    184    28.9    18.8    154 
 Madison Plateau          7750   23.6    20.0    118    40.1    30.0    134 
 West Yellowstone         6700     .0      .0       *   26.0    16.6    157 
 Whiskey Creek            6800    8.2    10.7     77    29.9    23.1    129 
                                                -----                  -----
                Basin Index (%)                  125                    140 
 

YELLOWSTONE

 Beartooth Lake           9360   34.5    23.0    150    31.8    23.1    138 
 Burnt Mtn                5880     .0      .0       *   18.7    17.4    107 
 Canyon                   7870   13.6     7.4    184    28.9    18.8    154 
 Cole Creek               7850   14.5    17.2     84    14.3    18.0     79 
 Evening Star             9200   36.0    25.4    142    49.5    31.8    156 
 Fisher Creek             9100   45.6    34.3    133    52.7    36.6    144 
 Northeast Entrance       7350     .0      .9      0*   23.2    14.6    159 
 Parker Peak              9400   39.4    22.0    179    40.1    21.2    189 
 Sylvan Lake              8420   24.8    18.1    137    42.1    26.3    160 
 Thumb Divide             7980   12.1     8.4    144    30.6    21.8    140 
 Two Ocean Plateau        9240     -M    29.6       *     -M    31.2       *
 White Mill               8700   38.1    24.7    154    40.0    27.5    145 
 Wolverine                7650     .5      .0       *   23.8    14.6    163 
                                                -----                  -----
                Basin Index (%)                  143                    146 
 

WIND RIVER

 Burroughs Creek          8750   14.2      -M       *   29.4      -M       *
 Castle Creek             8400     .4      -M       *   17.7      -M       *
 Cold Springs             9630   11.1     1.5    740    22.5    13.3    169 
 Deer Park                9700   34.1    14.4    237    43.6    24.6    177 
 Hobbs Park              10100   33.4    15.9    210    34.7    17.8    195 
 Kirwin                   9550   22.3    10.9    205    29.3    14.8    198 
 Little Warm              9370   16.0     6.6    242    27.4    16.2    169 
 Owl Creek                8975    2.2      .5    440*   15.6     8.6    181 
 South Pass               9040   31.0    11.8    263    33.8    21.3    159 
 St. Lawrence Alt         8620    3.6     1.0    360    20.8    12.4    168 
 Togwotee Pass            9580   35.0    25.4    138    43.3    28.5    152 
 Townsend Creek           8700   16.4     3.9    421    28.3    15.8    179 
                                                -----                  -----
                Basin Index (%)                  223                    173 
 

BIGHORN BASIN

 Bald Mtn.                9380   22.5    20.6    109    21.6    21.1    102 
 Bear Trap Meadow         8200    1.2      .0       *   14.9    11.6    128 
 Bone Springs Div         9350   21.4    16.6    129    22.0    19.7    112 
 Grave Springs            8550    8.4     7.7    109    13.7    14.1     97 
 Kirwin                   9550   22.3    10.9    205    29.3    14.8    198 
 Marquette                8760   17.2      -M       *   23.9      -M       *
 Middle Powder            7760    9.4    10.8     87    14.4    15.4     94 
 Owl Creek                8975    2.2      .5    440*   15.6     8.6    181 
 Powder River Pass        9480    8.0     9.0     89    18.2    16.3    112 
 Shell Creek              9580   17.8    16.8    106    18.7    17.6    106 
 Timber Creek             7950    2.6     1.5    173    15.1    11.0    137 
                                                -----                  -----
                Basin Index (%)                  123                    122 
 

SHOSHONE RIVER

 Blackwater               9780   40.6    24.8    164    46.6    24.6    189 
 Evening Star             9200   36.0    25.4    142    49.5    31.8    156 
 Marquette                8760   17.2      -M       *   23.9      -M       *
 Sylvan Road              7120     .0     1.5      0    32.5    19.3    168 
 Younts Peak              8350   14.0    15.4     91    33.8    18.5    183 
                                                -----                  -----
                Basin Index (%)                  135                    172 
 

POWDER RIVER

 Bear Trap Meadow         8200    1.2      .0       *   14.9    11.6    128 
 Cloud Peak Reservoir     9860   19.6    16.8    117    26.5    18.2    146 
 Grave Springs            8550    8.4     7.7    109    13.7    14.1     97 
 Hansen Sawmill           8360   11.9     1.2    992    20.0    11.9    168 
 Middle Powder            7760    9.4    10.8     87    14.4    15.4     94 
 Powder River Pass        9480    8.0     9.0     89    18.2    16.3    112 
 Soldier Park             8720   14.2      -M       *   20.6      -M       *
                                                -----                  -----
                Basin Index (%)                  129                    123 
 

TONGUE RIVER

 Big Goose                7990   12.4    10.4    119    20.2    15.7    129 
 Bone Springs Div         9350   21.4    16.6    129    22.0    19.7    112 
 Burgess Junction         7880   10.9    11.4     96    16.0    16.1     99 
 Dome Lake                8880   17.2    11.2    154    22.0    17.9    123 
 Little Goose             8870   15.8      -M       *   24.2      -M       *
 Sucker Creek             8880   13.5    12.6    107    19.1    19.0    101 
 Tie Creek                6870     .0     1.5      0    19.9    15.9    125 
                                                -----                  -----
                Basin Index (%)                  118                    114 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   12.3    13.5     91 
                                                -----                  -----
                Basin Index (%)                     *                    91 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   12.1    15.5     78 
 North Rapid Creek        6130     .0      .0       *   10.3    13.4     77 
                                                -----                  -----
                Basin Index (%)                     *                    78 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.2    22.4    108    30.2    27.5    110 
 Blackhall Mtn            9820   34.8      -M       *   42.2      -M       *
 Columbine                9160    6.5    12.7     51    32.1    29.6    108 
 Divide Peak              8880    6.3    14.3     44    26.2    25.5    103 
 Joe Wright              10120   16.8    23.2     72    33.5    31.4    107 
 Laprele Creek            8375     .3     2.8     11    15.7    16.1     98 
 Med Bow                 10500   37.6      -M       *   41.3      -M       *
 North French Creek      10130   25.6    32.7     78    34.1    32.4    105 
 Never Summer            10280   23.6    22.2    106    22.8      -M       *
 Old Battle              10000   37.9    36.8    103    43.4    40.8    106 
 Rawah                    9020     .4     2.7     15    20.7    18.2    114 
 Sage Creek Basin         7850     -M      .0       *   18.3    16.9    108 
 Sand Lake               10050   32.3    31.8    102    32.2    30.5    106 
 South Brush Creek        8440     .5     5.2     10    16.8    19.1     88 
 Tower                   10500   43.2    51.4     84    51.3    46.4    111 
 Webber Springs           9250   18.0    19.4     93    37.4    31.1    120 
 Willow Creek Pass        9540   16.3    13.4    122    20.6    16.5    125 
 Zirkel                   9340   18.6    19.7     94    47.1    32.4    145 
                                                -----                  -----
                Basin Index (%)                   87                    111 
 

SWEETWATER

 Deer Park                9700   34.1    14.4    237    43.6    24.6    177 
 Larsen Creek             9000    5.3     6.5     82    26.2      -M       *
 South Pass               9040   31.0    11.8    263    33.8    21.3    159 
                                                -----                  -----
                Basin Index (%)                  215                    169 
 

LOWER N. PLATTE

 Casper Mtn.              7900    8.0    11.4     70    19.4    19.4    100 
 Laprele Creek            8375     .3     2.8     11    15.7    16.1     98 
 Reno Hill                8400    8.1    10.5     77    19.6    20.1     98 
 Windy Peak               7900     .0      .8      0    15.1    13.9    109 
                                                -----                  -----
                Basin Index (%)                   64                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   18.0    21.4     84    26.9    26.0    103 
 Cinnabar Park            9574   11.1    17.4     64    27.0    28.2     96 
 Crow Creek               8330     .0      .0       *   12.5    14.3     87 
 Deadman Hill            10220   19.3    18.5    104    24.9    21.7    115 
 Rawah                    9020     .4     2.7     15    20.7    18.2    114 
 Roach                    9700   13.3    15.9     84    25.4    23.3    109 
                                                -----                  -----
                Basin Index (%)                   82                    104 
 

S. PLATTE

 Black Mountain           8920    1.7      -M       *   16.5      -M       *
 Crow Creek               8330     .0      .0       *   12.5    14.3     87 
 Deadman Hill            10220   19.3    18.5    104    24.9    21.7    115 
                                                -----                  -----
                Basin Index (%)                  104*                   104 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.5    18.0    108 
 Divide Peak              8880    6.3    14.3     44    26.2    25.5    103 
 Elk River                8700     .1     7.8      1    23.2    23.7     98 
 Little Snake River       8915   18.9    20.4     93    43.7    34.4    127 
 Old Battle              10000   37.9    36.8    103    43.4    40.8    106 
 Sage Creek Basin         7850     -M      .0       *   18.3    16.9    108 
 Sandstone RS             8150     -M     1.9       *   19.5    21.8     89 
 Whiskey Park             8950   23.1    26.8     86    35.3    32.9    107 
                                                -----                  -----
                Basin Index (%)                   81                    107 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   17.6     8.6    205    25.9    16.1    161 
 Blind Bull Sum           8650     -M    22.4       *   39.2    22.2    177 
 East Rim Divide          7930     .4     5.9      7    23.1    13.5    171 
 Elkhart Park G.S.        9400   16.8     9.6    175    26.8    15.9    169 
 Gros Ventre Summit       8750   17.7     9.6    184    26.7    15.4    173 
 Gunsight Pass            9820   23.5    12.1    194    28.6    16.9    169 
 Kendall R.S.             7740    7.8      .0       *   31.3    16.2    193 
 Loomis Park              8240   18.5     7.3    253    35.2    19.7    179 
 New Fork Lake            8340    5.9     2.6    227    20.3    12.8    159 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060    5.6     7.4     76    29.2    16.2    180 
 Spring Creek Divide      9000   43.3    23.7    183    44.9    27.1    166 
 Triple Peak              8500   30.6    14.9    205    44.9    29.1    154 
                                                -----                  -----
                Basin Index (%)                  185                    170 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .2      -M       *   19.1      -M       *
 Buck Pasture             9632   11.5      -M       *   27.6      -M       *
 EF Blacks Fork GS        9360    6.2      -M       *   22.6      -M       *
 Hams Fork                7840     .4      .1    400*   23.9    13.8    173 
 Hewinta                  9500     .0     2.0      0    21.1    17.1    123 
 Hickerson Park           9122     .2      .1    200*   15.0    12.8    117 
 Hole-in-Rock             9168     .0      .0       *   15.8    12.3    128 
 Indian Creek             9425   39.2    21.0    187    45.2    26.0    174 
 Kelley R.S.              8180   14.0     8.4    167    33.9    21.0    161 
 Spirit Lk               10235   10.2      -M       *   21.0      -M       *
 Steel Creek Park        10158   19.6    17.7    111    25.5    20.1    127 
                                                -----                  -----
                Basin Index (%)                  149*                   147 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.5      -M       *
 Bug Lake                 7987   26.1    12.2    214    37.7    22.6    167 
 Burts Miller Ranch       8000     .0      -M       *   11.9      -M       *
 Chalk Creek #1           9171   30.7    21.5    143    41.1    29.7    138 
 Hayden Fork              9130    6.1     5.9    103    33.0    24.8    133 
 Kelley R.S.              8180   14.0     8.4    167    33.9    21.0    161 
 Lily Lake                9133    5.9     5.4    109    23.1    20.5    113 
 Monte Cristo             8932   34.4    21.5    160    44.7    30.6    146 
 Salt River Summit        7760   10.1     4.5    224    32.0    19.1    168 
                                                -----                  -----
                Basin Index (%)                  160                    146 

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


 -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.