Home
Interactive Maps
WY Weather
WY Climate
Drought
Data/Products
CoCoRaHS
Library
Articles & Publications
Education & Outreach
Site Map
Cooperative Projects
Water Links
Contact Us

Subscribe to our mailing list

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 6:22a, 8/18/18
Temperature 56.3°F
Wind 0.0 mph


Share this page
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 3 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   19.8     8.4    236    42.2    22.9    184 
 Black Bear               8170   50.4    37.3    135    59.8    42.0    142 
 Blind Bull Sum           8650   48.5    22.9    212    39.0    21.5    181 
 Cottonwood Creek         7670   29.4    14.7    200    44.0    27.7    159 
 East Rim Divide          7930    9.6     7.9    122    22.5    13.0    173 
 Grand Targhee            9260   58.1    45.5    128    51.1    34.9    146 
 Granite Creek            6770   20.8     7.8    267    38.2    21.5    178 
 Grassy Lake              7265   39.9    28.3    141    61.5    39.5    156 
 Gros Ventre Summit       8750   20.8    11.3    184    26.5    14.7    180 
 Gunsight Pass            9820   26.0    12.1    215    28.2    16.2    174 
 Lewis Lake Divide        7850   48.4    29.7    163    59.8    38.8    154 
 Phillips Bench           8200   41.5    24.8    167    50.8    30.9    164 
 Salt River Summit        7760   17.5     7.6    230    31.9    18.5    172 
 Snake River Station      6920   13.6     6.2    219    39.3    24.9    158 
 Spring Creek Divide      9000   44.7    24.3    184    44.6    26.4    169 
 Thumb Divide             7980   19.7    11.3    174    30.5    21.1    145 
 Togwotee Pass            9580   37.0    24.7    150    43.1    27.5    157 
 Two Ocean Plateau        9240     -M    29.9       *     -M    30.3       *
 Willow Creek             8380   28.7    22.3    129    57.6    37.9    152 
 Younts Peak              8350   22.6    15.7    144    33.7    17.8    189 
                                                -----                  -----
                Basin Index (%)                  165                    162 
 

MADISON-GALLATIN

 Black Bear               8170   50.4    37.3    135    59.8    42.0    142 
 Canyon                   7870   18.4     9.6    192    28.8    18.1    159 
 Madison Plateau          7750   30.0    21.0    143    40.0    29.1    137 
 West Yellowstone         6700     .0      .6      0*   26.0    16.0    162 
 Whiskey Creek            6800   12.3    13.8     89    29.8    22.5    132 
                                                -----                  -----
                Basin Index (%)                  135                    144 
 

YELLOWSTONE

 Beartooth Lake           9360   36.4    22.7    160    31.5    22.1    143 
 Burnt Mtn                5880     .0      .0       *   18.5    16.1    115 
 Canyon                   7870   18.4     9.6    192    28.8    18.1    159 
 Cole Creek               7850   17.3    16.7    104    14.2    16.6     86 
 Evening Star             9200   41.7    24.8    168    49.2    30.6    161 
 Fisher Creek             9100   48.3    32.6    148    52.5    35.4    148 
 Northeast Entrance       7350    2.1     2.0    105    23.1    13.9    166 
 Parker Peak              9400   42.9    21.2    202    40.0    20.2    198 
 Sylvan Lake              8420   26.9    19.3    139    42.0    25.3    166 
 Thumb Divide             7980   19.7    11.3    174    30.5    21.1    145 
 Two Ocean Plateau        9240     -M    29.9       *     -M    30.3       *
 White Mill               8700   40.6    23.9    170    40.0    26.5    151 
 Wolverine                7650    2.5     1.4    179    23.7    13.9    171 
                                                -----                  -----
                Basin Index (%)                  160                    152 
 

WIND RIVER

 Burroughs Creek          8750   19.8      -M       *   29.2      -M       *
 Castle Creek             8400    6.7      -M       *   17.4      -M       *
 Cold Springs             9630   16.0     1.3   1231    22.3    12.6    177 
 Deer Park                9700   36.9    15.7    235    43.4    23.6    184 
 Hobbs Park              10100   34.9    16.0    218    34.4    16.9    204 
 Kirwin                   9550   25.7    10.6    242    29.1    14.0    208 
 Little Warm              9370   19.3     8.4    230    27.2    15.5    175 
 Owl Creek                8975    8.5      .7   1214    15.3     8.1    189 
 South Pass               9040   34.2    14.4    238    33.6    20.5    164 
 St. Lawrence Alt         8620    9.3     2.1    443    20.5    11.7    175 
 Togwotee Pass            9580   37.0    24.7    150    43.1    27.5    157 
 Townsend Creek           8700   19.7     6.9    286    28.1    15.1    186 
                                                -----                  -----
                Basin Index (%)                  240                    179 
 

BIGHORN BASIN

 Bald Mtn.                9380   24.7    20.5    120    21.3    19.9    107 
 Bear Trap Meadow         8200    7.0      .6   1167    14.8    10.8    137 
 Bone Springs Div         9350   23.8    16.4    145    21.5    18.4    117 
 Grave Springs            8550   11.4     9.4    121    13.5    13.0    104 
 Kirwin                   9550   25.7    10.6    242    29.1    14.0    208 
 Marquette                8760   20.4      -M       *   23.7      -M       *
 Middle Powder            7760   13.7    11.4    120    14.1    14.3     99 
 Owl Creek                8975    8.5      .7   1214    15.3     8.1    189 
 Powder River Pass        9480   12.1     9.1    133    18.0    15.2    118 
 Shell Creek              9580   20.5    16.0    128    18.2    16.5    110 
 Timber Creek             7950    7.8     2.7    289    15.1    10.2    148 
                                                -----                  -----
                Basin Index (%)                  159                    129 
 

SHOSHONE RIVER

 Blackwater               9780   42.2    25.7    164    46.4    23.7    196 
 Evening Star             9200   41.7    24.8    168    49.2    30.6    161 
 Marquette                8760   20.4      -M       *   23.7      -M       *
 Sylvan Road              7120     .0     4.6      0    32.5    18.7    174 
 Younts Peak              8350   22.6    15.7    144    33.7    17.8    189 
                                                -----                  -----
                Basin Index (%)                  150                    178 
 

POWDER RIVER

 Bear Trap Meadow         8200    7.0      .6   1167    14.8    10.8    137 
 Cloud Peak Reservoir     9860   22.0    16.4    134    26.2    16.9    155 
 Grave Springs            8550   11.4     9.4    121    13.5    13.0    104 
 Hansen Sawmill           8360   15.6     1.8    867    18.9    11.0    172 
 Middle Powder            7760   13.7    11.4    120    14.1    14.3     99 
 Powder River Pass        9480   12.1     9.1    133    18.0    15.2    118 
 Soldier Park             8720   18.2      -M       *   20.4      -M       *
                                                -----                  -----
                Basin Index (%)                  168                    130 
 

TONGUE RIVER

 Big Goose                7990   15.4     9.3    166    19.7    14.3    138 
 Bone Springs Div         9350   23.8    16.4    145    21.5    18.4    117 
 Burgess Junction         7880   13.5    11.8    114    15.8    15.0    105 
 Dome Lake                8880   19.8    11.3    175    21.8    16.6    131 
 Little Goose             8870   19.2      -M       *   24.0      -M       *
 Sucker Creek             8880   16.5    12.0    138    18.8    17.6    107 
 Tie Creek                6870    4.7     2.5    188    19.7    14.6    135 
                                                -----                  -----
                Basin Index (%)                  148                    122 
 

BELLE FOURCHE

 Cole Canyon              5910    1.4      .1   1400*   11.8    12.3     96 
                                                -----                  -----
                Basin Index (%)                 1400*                    96 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .3      .2    150*   11.6    14.6     79 
 North Rapid Creek        6130     .1      .5     20*    9.9    12.6     79 
                                                -----                  -----
                Basin Index (%)                   57*                    79 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   26.9    22.3    121    29.8    26.4    113 
 Blackhall Mtn            9820   37.1      -M       *   42.0      -M       *
 Columbine                9160   12.9    17.5     74    32.0    28.8    111 
 Divide Peak              8880   12.3    17.8     69    26.0    24.6    106 
 Joe Wright              10120   19.3    22.9     84    33.2    30.2    110 
 Laprele Creek            8375    6.3     5.6    112    14.9    15.2     98 
 Med Bow                 10500   40.6      -M       *   41.1      -M       *
 North French Creek      10130   28.9    32.8     88    34.0    31.1    109 
 Never Summer            10280   25.2    21.8    116    22.7      -M       *
 Old Battle              10000   40.5    34.7    117    42.9    39.5    109 
 Rawah                    9020    5.9     5.2    113    20.5    17.5    117 
 Sage Creek Basin         7850     -M     1.0       *   18.1    16.3    111 
 Sand Lake               10050   33.4    31.5    106    32.1    29.3    110 
 South Brush Creek        8440     .4     8.4      5    15.5    18.1     86 
 Tower                   10500   44.5    50.4     88    50.7    45.1    112 
 Webber Springs           9250   23.1    21.3    108    37.0    30.2    123 
 Willow Creek Pass        9540   19.2    14.5    132    20.5    16.0    128 
 Zirkel                   9340   24.7    20.8    119    46.8    31.2    150 
                                                -----                  -----
                Basin Index (%)                   99                    114 
 

SWEETWATER

 Deer Park                9700   36.9    15.7    235    43.4    23.6    184 
 Larsen Creek             9000   12.8     8.6    149    26.0      -M       *
 South Pass               9040   34.2    14.4    238    33.6    20.5    164 
                                                -----                  -----
                Basin Index (%)                  217                    175 
 

LOWER N. PLATTE

 Casper Mtn.              7900   13.0    12.8    102    18.6    18.3    102 
 Laprele Creek            8375    6.3     5.6    112    14.9    15.2     98 
 Reno Hill                8400   13.5    12.2    111    18.4    19.2     96 
 Windy Peak               7900    3.9     3.4    115    14.0    13.2    106 
                                                -----                  -----
                Basin Index (%)                  108                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   21.5    23.1     93    26.4    25.0    106 
 Cinnabar Park            9574   14.6    19.0     77    26.9    27.3     99 
 Crow Creek               8330     .0      .0       *   12.3    13.6     90 
 Deadman Hill            10220   22.6    19.2    118    24.8    20.9    119 
 Rawah                    9020    5.9     5.2    113    20.5    17.5    117 
 Roach                    9700   16.8    17.1     98    25.2    22.5    112 
                                                -----                  -----
                Basin Index (%)                   97                    107 
 

S. PLATTE

 Black Mountain           8920    8.3      -M       *   16.4      -M       *
 Crow Creek               8330     .0      .0       *   12.3    13.6     90 
 Deadman Hill            10220   22.6    19.2    118    24.8    20.9    119 
                                                -----                  -----
                Basin Index (%)                  118*                   108 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.6    17.3    113 
 Divide Peak              8880   12.3    17.8     69    26.0    24.6    106 
 Elk River                8700    6.0    12.5     48    23.4    23.0    102 
 Little Snake River       8915   23.8    21.8    109    43.4    33.1    131 
 Old Battle              10000   40.5    34.7    117    42.9    39.5    109 
 Sage Creek Basin         7850     -M     1.0       *   18.1    16.3    111 
 Sandstone RS             8150     -M     5.1       *   18.8    21.0     90 
 Whiskey Park             8950   24.7    26.8     92    35.3    31.8    111 
                                                -----                  -----
                Basin Index (%)                   94                    110 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   22.6     9.8    231    25.7    15.3    168 
 Blind Bull Sum           8650   48.5    22.9    212    39.0    21.5    181 
 East Rim Divide          7930    9.6     7.9    122    22.5    13.0    173 
 Elkhart Park G.S.        9400   20.7    10.8    192    26.3    15.2    173 
 Gros Ventre Summit       8750   20.8    11.3    184    26.5    14.7    180 
 Gunsight Pass            9820   26.0    12.1    215    28.2    16.2    174 
 Kendall R.S.             7740   13.6     3.2    425    30.6    15.6    196 
 Loomis Park              8240   23.7    10.5    226    34.3    19.1    180 
 New Fork Lake            8340   11.8     6.0    197    19.5    12.3    159 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   13.9     8.9    156    29.2    15.7    186 
 Spring Creek Divide      9000   44.7    24.3    184    44.6    26.4    169 
 Triple Peak              8500   36.4    16.7    218    44.8    28.1    159 
                                                -----                  -----
                Basin Index (%)                  202                    174 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    5.2      -M       *   18.8      -M       *
 Buck Pasture             9632   16.7      -M       *   27.3      -M       *
 EF Blacks Fork GS        9360   12.8      -M       *   21.5      -M       *
 Hams Fork                7840    9.4     2.0    470    23.8    13.2    180 
 Hewinta                  9500    7.9     4.4    180    20.9    16.4    127 
 Hickerson Park           9122    3.5     3.5    100    14.9    12.2    122 
 Hole-in-Rock             9168    4.5     2.0    225    15.6    11.6    134 
 Indian Creek             9425   44.6    22.5    198    45.0    25.2    179 
 Kelley R.S.              8180   24.2    10.8    224    33.7    20.3    166 
 Spirit Lk               10235   16.0      -M       *   20.9      -M       *
 Steel Creek Park        10158   22.5    17.4    129    25.2    19.3    131 
                                                -----                  -----
                Basin Index (%)                  186                    152 
 

UPPER BEAR RIVER

 Bear River RS            8777     .8      -M       *   21.4      -M       *
 Bug Lake                 7987   32.3    14.2    227    37.6    21.8    172 
 Burts Miller Ranch       8000     .0      -M       *   11.9      -M       *
 Chalk Creek #1           9171   34.5    23.8    145    41.1    28.7    143 
 Hayden Fork              9130   14.9     8.8    169    33.5    24.0    140 
 Kelley R.S.              8180   24.2    10.8    224    33.7    20.3    166 
 Lily Lake                9133   12.8     9.9    129    23.1    19.8    117 
 Monte Cristo             8932   39.0    25.8    151    44.6    29.5    151 
 Salt River Summit        7760   17.5     7.6    230    31.9    18.5    172 
                                                -----                  -----
                Basin Index (%)                  174                    151 

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


 -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.