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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 9:57p, 8/21/18
Temperature 55.0°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 MONDAY: MAY 1 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   20.6     9.3    222    42.1    22.8    185 
 Black Bear               8170   51.4    37.4    137    59.8    41.7    143 
 Blind Bull Sum           8650     -M    23.1       *   38.9    21.3    183 
 Cottonwood Creek         7670   30.0    15.3    196    43.6    27.5    159 
 East Rim Divide          7930   10.9     8.2    133    22.5    12.9    174 
 Grand Targhee            9260   57.8    44.8    129    51.0    34.6    147 
 Granite Creek            6770   22.0     8.3    265    38.2    21.3    179 
 Grassy Lake              7265   39.6    29.1    136    61.4    39.3    156 
 Gros Ventre Summit       8750   21.2    11.6    183    26.4    14.6    181 
 Gunsight Pass            9820     -M    12.5       *   28.2    16.0    176 
 Lewis Lake Divide        7850   48.7    30.1    162    59.7    38.5    155 
 Phillips Bench           8200   41.9    25.4    165    50.6    30.7    165 
 Salt River Summit        7760   18.1     7.9    229      -M    18.4       *
 Snake River Station      6920   14.3     7.4    193    39.3    24.7    159 
 Spring Creek Divide      9000   44.5    24.3    183    44.3    26.2    169 
 Thumb Divide             7980   20.6    12.4    166    30.6    20.9    146 
 Togwotee Pass            9580   37.0    24.7    150    42.9    27.2    158 
 Two Ocean Plateau        9240     -M    29.7       *     -M    30.1       *
 Willow Creek             8380   29.3    23.0    127    57.3    37.5    153 
 Younts Peak              8350   23.5    15.5    152    33.8    17.6    192 
                                                -----                  -----
                Basin Index (%)                  159                    162 
 

MADISON-GALLATIN

 Black Bear               8170   51.4    37.4    137    59.8    41.7    143 
 Canyon                   7870   18.7    10.4    180    28.8    18.0    160 
 Madison Plateau          7750   29.8    21.3    140    40.0    28.9    138 
 West Yellowstone         6700     .0     1.8      0    26.0    16.0    162 
 Whiskey Creek            6800   12.8    14.6     88    29.7    22.3    133 
                                                -----                  -----
                Basin Index (%)                  132                    145 
 

YELLOWSTONE

 Beartooth Lake           9360   36.1    22.8    158    31.0    21.9    142 
 Burnt Mtn                5880     .4      .0       *   18.4    15.9    116 
 Canyon                   7870   18.7    10.4    180    28.8    18.0    160 
 Cole Creek               7850   17.1    16.6    103    14.2    16.4     87 
 Evening Star             9200   41.7    24.9    167    48.8    30.4    161 
 Fisher Creek             9100   47.6    32.7    146    51.8    35.1    148 
 Northeast Entrance       7350    2.9     3.0     97    23.0    13.8    167 
 Parker Peak              9400   42.6    21.3    200    39.8    20.0    199 
 Sylvan Lake              8420   27.1    19.8    137    41.9    25.1    167 
 Thumb Divide             7980   20.6    12.4    166    30.6    20.9    146 
 Two Ocean Plateau        9240     -M    29.7       *     -M    30.1       *
 White Mill               8700   40.4    23.8    170    39.4    26.3    150 
 Wolverine                7650    2.9     2.5    116    23.6    13.7    172 
                                                -----                  -----
                Basin Index (%)                  157                    152 
 

WIND RIVER

 Burroughs Creek          8750   20.3      -M       *   29.2      -M       *
 Castle Creek             8400    7.5      -M       *   17.3      -M       *
 Cold Springs             9630   16.1     1.3   1238    22.3    12.4    180 
 Deer Park                9700   37.2    16.0    232    43.1    23.4    184 
 Hobbs Park              10100   35.0    16.0    219    32.4    16.6    195 
 Kirwin                   9550   26.2    10.4    252    29.1    13.8    211 
 Little Warm              9370   19.2     8.7    221    26.9    15.3    176 
 Owl Creek                8975    9.0     1.0    900    15.3     7.9    194 
 South Pass               9040   34.5    14.9    232    33.6    20.3    166 
 St. Lawrence Alt         8620    9.6     2.5    384    20.5    11.5    178 
 Togwotee Pass            9580   37.0    24.7    150    42.9    27.2    158 
 Townsend Creek           8700   19.9     7.5    265    28.1    14.9    189 
                                                -----                  -----
                Basin Index (%)                  237                    180 
 

BIGHORN BASIN

 Bald Mtn.                9380   24.1    20.5    118    20.8    19.7    106 
 Bear Trap Meadow         8200    7.0      .9    778    14.6    10.6    138 
 Bone Springs Div         9350   23.4    16.5    142    21.2    18.2    116 
 Grave Springs            8550   11.2     9.4    119    13.5    12.8    105 
 Kirwin                   9550   26.2    10.4    252    29.1    13.8    211 
 Marquette                8760   20.4      -M       *   23.6      -M       *
 Middle Powder            7760   13.0    11.6    112    13.8    14.1     98 
 Owl Creek                8975    9.0     1.0    900    15.3     7.9    194 
 Powder River Pass        9480   11.7     9.4    124    17.9    15.1    119 
 Shell Creek              9580   20.2    15.9    127    18.0    16.3    110 
 Timber Creek             7950    8.1     3.1    261    15.1     9.9    153 
                                                -----                  -----
                Basin Index (%)                  156                    130 
 

SHOSHONE RIVER

 Blackwater               9780   42.0    25.3    166    46.2    23.4    197 
 Evening Star             9200   41.7    24.9    167    48.8    30.4    161 
 Marquette                8760   20.4      -M       *   23.6      -M       *
 Sylvan Road              7120     .0     5.8      0    32.5    18.6    175 
 Younts Peak              8350   23.5    15.5    152    33.8    17.6    192 
                                                -----                  -----
                Basin Index (%)                  150                    179 
 

POWDER RIVER

 Bear Trap Meadow         8200    7.0      .9    778    14.6    10.6    138 
 Cloud Peak Reservoir     9860   21.8    16.5    132    26.0    16.6    157 
 Grave Springs            8550   11.2     9.4    119    13.5    12.8    105 
 Hansen Sawmill           8360   15.8     2.5    632    18.9    10.8    175 
 Middle Powder            7760   13.0    11.6    112    13.8    14.1     98 
 Powder River Pass        9480   11.7     9.4    124    17.9    15.1    119 
 Soldier Park             8720   18.1      -M       *   20.3      -M       *
                                                -----                  -----
                Basin Index (%)                  160                    131 
 

TONGUE RIVER

 Big Goose                7990   15.1     9.2    164    19.5    14.0    139 
 Bone Springs Div         9350   23.4    16.5    142    21.2    18.2    116 
 Burgess Junction         7880   13.2    12.1    109    15.8    14.8    107 
 Dome Lake                8880   19.6    11.4    172    21.6    16.4    132 
 Little Goose             8870   19.0      -M       *   23.7      -M       *
 Sucker Creek             8880   16.3    12.2    134    18.6    17.3    108 
 Tie Creek                6870    4.4     2.7    163    19.3    14.3    135 
                                                -----                  -----
                Basin Index (%)                  144                    122 
 

BELLE FOURCHE

 Cole Canyon              5910    1.6      .3    533*   11.7    11.8     99 
                                                -----                  -----
                Basin Index (%)                  533*                    99 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .8      0    10.8    14.3     76 
 North Rapid Creek        6130     .0      .8      0     9.6    12.2     79 
                                                -----                  -----
                Basin Index (%)                    0                     77 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   26.6    22.3    119    29.6    26.2    113 
 Blackhall Mtn            9820   36.9      -M       *   41.7      -M       *
 Columbine                9160   12.9    18.2     71    31.7    28.5    111 
 Divide Peak              8880   12.3    18.0     68    25.9    24.3    107 
 Joe Wright              10120   19.2    23.3     82    32.9    29.8    110 
 Laprele Creek            8375    6.5     6.1    107    14.8    15.0     99 
 Med Bow                 10500   39.6      -M       *   40.2      -M       *
 North French Creek      10130   27.8    32.9     84    32.9    30.7    107 
 Never Summer            10280   25.0    21.8    115    22.5      -M       *
 Old Battle              10000   40.2    34.7    116    42.7    39.2    109 
 Rawah                    9020    5.8     6.1     95    20.3    17.2    118 
 Sage Creek Basin         7850     -M     1.1       *   17.9    16.1    111 
 Sand Lake               10050   32.7    31.4    104    31.5    29.0    109 
 South Brush Creek        8440     .2     9.2      2    15.3    17.8     86 
 Tower                   10500   44.4    50.0     89    50.1    44.7    112 
 Webber Springs           9250   23.1    21.7    106    36.8    29.9    123 
 Willow Creek Pass        9540   19.2    14.2    135    20.4    15.8    129 
 Zirkel                   9340   24.7    21.0    118    46.4    31.0    150 
                                                -----                  -----
                Basin Index (%)                   97                    114 
 

SWEETWATER

 Deer Park                9700   37.2    16.0    232    43.1    23.4    184 
 Larsen Creek             9000   13.4     9.2    146    26.0      -M       *
 South Pass               9040   34.5    14.9    232    33.6    20.3    166 
                                                -----                  -----
                Basin Index (%)                  212                    176 
 

LOWER N. PLATTE

 Casper Mtn.              7900   12.9    13.3     97    18.4    17.9    103 
 Laprele Creek            8375    6.5     6.1    107    14.8    15.0     99 
 Reno Hill                8400   13.1    12.6    104    18.0    18.9     95 
 Windy Peak               7900    4.0     4.0    100    13.9    13.0    107 
                                                -----                  -----
                Basin Index (%)                  101                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   20.9    23.3     90    26.1    24.7    106 
 Cinnabar Park            9574   14.2    19.4     73    26.3    26.9     98 
 Crow Creek               8330     .0      .0       *   12.0    13.4     90 
 Deadman Hill            10220   22.2    19.0    117    24.4    20.6    118 
 Rawah                    9020    5.8     6.1     95    20.3    17.2    118 
 Roach                    9700   16.5    17.2     96    24.8    22.2    112 
                                                -----                  -----
                Basin Index (%)                   94                    107 
 

S. PLATTE

 Black Mountain           8920    8.6      -M       *   16.2      -M       *
 Crow Creek               8330     .0      .0       *   12.0    13.4     90 
 Deadman Hill            10220   22.2    19.0    117    24.4    20.6    118 
                                                -----                  -----
                Basin Index (%)                  117*                   107 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.5    17.1    114 
 Divide Peak              8880   12.3    18.0     68    25.9    24.3    107 
 Elk River                8700    5.9    13.2     45    23.3    22.7    103 
 Little Snake River       8915   23.5    22.3    105    43.0    32.7    131 
 Old Battle              10000   40.2    34.7    116    42.7    39.2    109 
 Sage Creek Basin         7850     -M     1.1       *   17.9    16.1    111 
 Sandstone RS             8150     .0     5.9      0    18.6    20.8     89 
 Whiskey Park             8950   24.7    26.5     93    34.9    31.5    111 
                                                -----                  -----
                Basin Index (%)                   88                    110 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   22.9    10.6    216    25.7    15.1    170 
 Blind Bull Sum           8650     -M    23.1       *   38.9    21.3    183 
 East Rim Divide          7930   10.9     8.2    133    22.5    12.9    174 
 Elkhart Park G.S.        9400   20.9    11.3    185    26.3    15.0    175 
 Gros Ventre Summit       8750   21.2    11.6    183    26.4    14.6    181 
 Gunsight Pass            9820     -M    12.5       *   28.2    16.0    176 
 Kendall R.S.             7740   15.1     4.3    351    30.7    15.5    198 
 Loomis Park              8240   24.6    11.0    224    34.3    18.9    181 
 New Fork Lake            8340   12.7     6.5    195    19.4    12.1    160 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   15.5     9.4    165    29.2    15.6    187 
 Spring Creek Divide      9000   44.5    24.3    183    44.3    26.2    169 
 Triple Peak              8500   36.9    17.5    211    44.5    27.9    159 
                                                -----                  -----
                Basin Index (%)                  196                    175 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    5.6      -M       *   18.7      -M       *
 Buck Pasture             9632   16.8      -M       *   27.3      -M       *
 EF Blacks Fork GS        9360   13.2      -M       *   21.4      -M       *
 Hams Fork                7840   10.2     2.9    352    23.8    13.1    182 
 Hewinta                  9500    8.3     4.8    173    20.9    16.1    130 
 Hickerson Park           9122    4.7     4.2    112    15.1    12.0    126 
 Hole-in-Rock             9168    5.7     2.5    228    15.7    11.4    138 
 Indian Creek             9425   44.4    23.0    193    45.0    25.0    180 
 Kelley R.S.              8180   24.4    11.5    212    33.7    20.2    167 
 Spirit Lk               10235   15.9      -M       *   20.9      -M       *
 Steel Creek Park        10158   22.6    17.1    132    25.2    19.1    132 
                                                -----                  -----
                Basin Index (%)                  182                    153 
 

UPPER BEAR RIVER

 Bear River RS            8777    1.7      -M       *   21.4      -M       *
 Bug Lake                 7987   33.6    15.1    223    37.7    21.7    174 
 Burts Miller Ranch       8000     .0      -M       *   11.9      -M       *
 Chalk Creek #1           9171   34.5    24.2    143    41.0    28.4    144 
 Hayden Fork              9130   15.7     9.3    169    33.7    23.8    142 
 Kelley R.S.              8180   24.4    11.5    212    33.7    20.2    167 
 Lily Lake                9133   13.2     9.9    133    23.0    19.5    118 
 Monte Cristo             8932   38.7    26.5    146    44.5    29.2    152 
 Salt River Summit        7760   18.1     7.9    229      -M    18.4       *
                                                -----                  -----
                Basin Index (%)                  171                    150 

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


 -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.