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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 3:33a, 10/17/18
Temperature 31.7°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 SATURDAY: MAY 6 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   16.9     6.6    256    42.2    23.3    181 
 Black Bear               8170   50.6    37.1    136    59.8    42.5    141 
 Blind Bull Sum           8650   48.5    22.7    214    39.1    21.8    179 
 Cottonwood Creek         7670   27.1    13.7    198    44.0    28.1    157 
 East Rim Divide          7930    5.2     7.1     73    22.5    13.2    170 
 Grand Targhee            9260   59.3    46.2    128    51.2    35.5    144 
 Granite Creek            6770   17.9     7.1    252    38.4    21.7    177 
 Grassy Lake              7265   37.2    27.3    136    61.5    39.9    154 
 Gros Ventre Summit       8750   19.7    10.5    188    26.5    15.0    177 
 Gunsight Pass            9820   25.8    11.7    221    28.3    16.4    173 
 Lewis Lake Divide        7850   45.9    29.4    156    59.9    39.2    153 
 Phillips Bench           8200   40.3    23.9    169    50.8    31.3    162 
 Salt River Summit        7760   14.7     6.7    219    31.9    18.7    171 
 Snake River Station      6920    9.9     4.6    215    39.2    25.2    156 
 Spring Creek Divide      9000   44.9    24.1    186    44.6    26.7    167 
 Thumb Divide             7980   16.5    10.0    165    30.5    21.4    143 
 Togwotee Pass            9580   36.3    24.9    146    43.1    27.9    154 
 Two Ocean Plateau        9240     -M    29.8       *     -M    30.7       *
 Willow Creek             8380   27.3    21.8    125    57.6    38.5    150 
 Younts Peak              8350   19.1    15.7    122    33.6    18.1    186 
                                                -----                  -----
                Basin Index (%)                  160                    160 
 

MADISON-GALLATIN

 Black Bear               8170   50.6    37.1    136    59.8    42.5    141 
 Canyon                   7870   16.5     8.5    194    28.9    18.4    157 
 Madison Plateau          7750   27.8    20.7    134    40.0    29.5    136 
 West Yellowstone         6700     .0      .0       *   25.9    16.3    159 
 Whiskey Creek            6800   10.5    12.4     85    29.9    22.7    132 
                                                -----                  -----
                Basin Index (%)                  134                    143 
 

YELLOWSTONE

 Beartooth Lake           9360   35.9    22.8    157    31.8    22.4    142 
 Burnt Mtn                5880     .0      .0       *   18.5    16.4    113 
 Canyon                   7870   16.5     8.5    194    28.9    18.4    157 
 Cole Creek               7850   16.1    16.9     95    14.2    16.9     84 
 Evening Star             9200   40.0    25.0    160    49.3    31.1    159 
 Fisher Creek             9100   47.5    33.2    143    52.7    35.8    147 
 Northeast Entrance       7350     .0     1.0      0    23.1    14.1    164 
 Parker Peak              9400   42.6    21.5    198    40.1    20.6    195 
 Sylvan Lake              8420   25.3    18.5    137    42.0    25.6    164 
 Thumb Divide             7980   16.5    10.0    165    30.5    21.4    143 
 Two Ocean Plateau        9240     -M    29.8       *     -M    30.7       *
 White Mill               8700   40.7    24.1    169    40.0    26.8    149 
 Wolverine                7650     .0      .6      0*   23.8    14.1    169 
                                                -----                  -----
                Basin Index (%)                  154                    150 
 

WIND RIVER

 Burroughs Creek          8750   16.9      -M       *   29.3      -M       *
 Castle Creek             8400    3.8      -M       *   17.3      -M       *
 Cold Springs             9630   13.5     1.5    900    22.4    13.0    172 
 Deer Park                9700   35.7    14.9    240    43.4    24.1    180 
 Hobbs Park              10100   34.9    15.9    219    34.6    17.3    200 
 Kirwin                   9550   24.3    10.7    227    29.3    14.4    203 
 Little Warm              9370   18.0     7.5    240    27.2    15.8    172 
 Owl Creek                8975    5.3      .6    883    15.3     8.3    184 
 South Pass               9040   33.0    13.4    246    33.8    20.9    162 
 St. Lawrence Alt         8620    7.3     1.6    456    20.6    12.0    172 
 Togwotee Pass            9580   36.3    24.9    146    43.1    27.9    154 
 Townsend Creek           8700   18.3     5.7    321    28.2    15.4    183 
                                                -----                  -----
                Basin Index (%)                  234                    176 
 

BIGHORN BASIN

 Bald Mtn.                9380   22.8    20.4    112    21.5    20.2    106 
 Bear Trap Meadow         8200    5.1      .2   2550*   14.9    11.1    134 
 Bone Springs Div         9350   23.4    16.3    144    21.8    18.8    116 
 Grave Springs            8550   10.8     8.8    123    13.7    13.5    101 
 Kirwin                   9550   24.3    10.7    227    29.3    14.4    203 
 Marquette                8760   19.6      -M       *   23.9      -M       *
 Middle Powder            7760   12.6    11.2    112    14.2    14.7     97 
 Owl Creek                8975    5.3      .6    883    15.3     8.3    184 
 Powder River Pass        9480   10.7     9.1    118    18.1    15.6    116 
 Shell Creek              9580   19.6    16.3    120    18.4    16.8    110 
 Timber Creek             7950    5.6     2.1    267    15.0    10.6    142 
                                                -----                  -----
                Basin Index (%)                  146                    127 
 

SHOSHONE RIVER

 Blackwater               9780   41.8    25.7    163    46.4    24.1    193 
 Evening Star             9200   40.0    25.0    160    49.3    31.1    159 
 Marquette                8760   19.6      -M       *   23.9      -M       *
 Sylvan Road              7120     .0     3.3      0    32.3    18.9    171 
 Younts Peak              8350   19.1    15.7    122    33.6    18.1    186 
                                                -----                  -----
                Basin Index (%)                  145                    175 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.1      .2   2550*   14.9    11.1    134 
 Cloud Peak Reservoir     9860   20.9    16.4    127    26.4    17.3    153 
 Grave Springs            8550   10.8     8.8    123    13.7    13.5    101 
 Hansen Sawmill           8360   14.1     1.6    881    18.9    11.3    167 
 Middle Powder            7760   12.6    11.2    112    14.2    14.7     97 
 Powder River Pass        9480   10.7     9.1    118    18.1    15.6    116 
 Soldier Park             8720   16.6      -M       *   20.5      -M       *
                                                -----                  -----
                Basin Index (%)                  157                    127 
 

TONGUE RIVER

 Big Goose                7990   14.2     9.9    143    20.1    14.9    135 
 Bone Springs Div         9350   23.4    16.3    144    21.8    18.8    116 
 Burgess Junction         7880   12.7    11.6    109    15.9    15.3    104 
 Dome Lake                8880   19.3    11.3    171    22.0    17.0    129 
 Little Goose             8870   17.9      -M       *   24.0      -M       *
 Sucker Creek             8880   15.1    12.0    126    19.1    18.0    106 
 Tie Creek                6870    2.7     2.2    123    19.7    15.0    131 
                                                -----                  -----
                Basin Index (%)                  138                    120 
 

BELLE FOURCHE

 Cole Canyon              5910     .1      .0       *   12.3    12.7     97 
                                                -----                  -----
                Basin Index (%)                     *                    97 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   11.6    14.9     78 
 North Rapid Creek        6130     .0      .0       *   10.0    12.8     78 
                                                -----                  -----
                Basin Index (%)                     *                    78 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.6    22.3    115    29.8    26.8    111 
 Blackhall Mtn            9820   36.5      -M       *   42.2      -M       *
 Columbine                9160   10.7    15.8     68    32.2    29.2    110 
 Divide Peak              8880   10.2    16.8     61    26.1    24.9    105 
 Joe Wright              10120   18.5    22.8     81    33.4    30.7    109 
 Laprele Creek            8375    3.8     4.9     78    15.4    15.5     99 
 Med Bow                 10500   39.3      -M       *   41.2      -M       *
 North French Creek      10130   27.8    32.8     85    34.0    31.5    108 
 Never Summer            10280   24.7    22.0    112    22.7      -M       *
 Old Battle              10000   40.0    35.3    113    43.3    40.0    108 
 Rawah                    9020    4.0     4.2     95    20.7    17.7    117 
 Sage Creek Basin         7850     -M      .4       *   17.9    16.6    108 
 Sand Lake               10050   33.5    31.7    106    32.3    29.7    109 
 South Brush Creek        8440     .6     7.1      8    16.4    18.4     89 
 Tower                   10500   44.7    51.2     87    51.0    45.7    112 
 Webber Springs           9250   22.7    20.7    110    37.0    30.5    121 
 Willow Creek Pass        9540   18.8    14.4    131    20.5    16.1    127 
 Zirkel                   9340   23.5    20.5    115    46.8    31.7    148 
                                                -----                  -----
                Basin Index (%)                   96                    113 
 

SWEETWATER

 Deer Park                9700   35.7    14.9    240    43.4    24.1    180 
 Larsen Creek             9000    9.3     7.7    121    25.9      -M       *
 South Pass               9040   33.0    13.4    246    33.8    20.9    162 
                                                -----                  -----
                Basin Index (%)                  217                    172 
 

LOWER N. PLATTE

 Casper Mtn.              7900   12.1    12.0    101    18.8    18.8    100 
 Laprele Creek            8375    3.8     4.9     78    15.4    15.5     99 
 Reno Hill                8400   12.3    11.9    103    19.1    19.5     98 
 Windy Peak               7900    1.7     2.4     71    14.0    13.4    104 
                                                -----                  -----
                Basin Index (%)                   96                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   20.6    22.5     92    26.8    25.3    106 
 Cinnabar Park            9574   13.5    18.2     74    26.8    27.7     97 
 Crow Creek               8330     .0      .0       *   12.4    13.9     89 
 Deadman Hill            10220   22.1    19.0    116    24.9    21.2    117 
 Rawah                    9020    4.0     4.2     95    20.7    17.7    117 
 Roach                    9700   16.0    16.8     95    25.2    22.8    111 
                                                -----                  -----
                Basin Index (%)                   94                    106 
 

S. PLATTE

 Black Mountain           8920    6.3      -M       *   16.4      -M       *
 Crow Creek               8330     .0      .0       *   12.4    13.9     89 
 Deadman Hill            10220   22.1    19.0    116    24.9    21.2    117 
                                                -----                  -----
                Basin Index (%)                  116*                   106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.4    17.5    111 
 Divide Peak              8880   10.2    16.8     61    26.1    24.9    105 
 Elk River                8700    2.4    10.7     22    23.2    23.3    100 
 Little Snake River       8915   21.9    21.2    103    43.5    33.5    130 
 Old Battle              10000   40.0    35.3    113    43.3    40.0    108 
 Sage Creek Basin         7850     -M      .4       *   17.9    16.6    108 
 Sandstone RS             8150     -M     3.6       *   19.3    21.2     91 
 Whiskey Park             8950   23.9    27.1     88    35.2    32.2    109 
                                                -----                  -----
                Basin Index (%)                   89                    109 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.7     8.8    235    25.7    15.6    165 
 Blind Bull Sum           8650   48.5    22.7    214    39.1    21.8    179 
 East Rim Divide          7930    5.2     7.1     73    22.5    13.2    170 
 Elkhart Park G.S.        9400   19.8    10.1    196    26.3    15.4    171 
 Gros Ventre Summit       8750   19.7    10.5    188    26.5    15.0    177 
 Gunsight Pass            9820   25.8    11.7    221    28.3    16.4    173 
 Kendall R.S.             7740   10.7     1.4    764    30.6    15.8    194 
 Loomis Park              8240   20.9     8.9    235    34.6    19.3    179 
 New Fork Lake            8340    9.0     4.5    200    19.8    12.5    158 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   11.9     8.0    149    29.2    15.9    184 
 Spring Creek Divide      9000   44.9    24.1    186    44.6    26.7    167 
 Triple Peak              8500   35.1    15.7    224    44.9    28.5    158 
                                                -----                  -----
                Basin Index (%)                  204                    172 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    2.0      -M       *   18.8      -M       *
 Buck Pasture             9632   15.0      -M       *   27.3      -M       *
 EF Blacks Fork GS        9360   10.4      -M       *   21.6      -M       *
 Hams Fork                7840    5.4      .7    771*   23.9    13.4    178 
 Hewinta                  9500    4.9     3.7    132    20.9    16.7    125 
 Hickerson Park           9122     .2     2.2      9    14.9    12.4    120 
 Hole-in-Rock             9168     .6     1.3     46    15.7    12.0    131 
 Indian Creek             9425   42.7    21.5    199    45.1    25.5    177 
 Kelley R.S.              8180     -M     9.5       *   33.7    20.6    164 
 Spirit Lk               10235   14.4      -M       *   20.8      -M       *
 Steel Creek Park        10158   21.5    17.5    123    25.2    19.7    128 
                                                -----                  -----
                Basin Index (%)                  161*                   149 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.3      -M       *
 Bug Lake                 7987   31.6    13.1    241    37.7    22.2    170 
 Burts Miller Ranch       8000     .0      -M       *   11.9      -M       *
 Chalk Creek #1           9171   33.7    22.8    148    41.0    29.2    140 
 Hayden Fork              9130   11.2     7.6    147    33.2    24.4    136 
 Kelley R.S.              8180     -M     9.5       *   33.7    20.6    164 
 Lily Lake                9133   10.2     8.6    119    23.0    20.1    114 
 Monte Cristo             8932   37.9    24.0    158    44.6    30.0    149 
 Salt River Summit        7760   14.7     6.7    219    31.9    18.7    171 
                                                -----                  -----
                Basin Index (%)                  168                    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.