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 12:43p, 5/21/18
Temperature 68.6°F
Wind 2.0 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 MONDAY: DECEMBER 25 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7060    7.8     6.5    120     9.6     9.0    107 
 Black Bear               8170   16.7    15.5    108    15.9    16.0     99 
 Blind Bull Sum           8650   13.0     8.2    159     8.2     8.4     98 
 Cottonwood Creek         7670    7.0     7.6     92     8.5    10.1     84 
 East Rim Divide          7930    3.8     3.8    100     4.8     4.9     98 
 Grand Targhee            9260   23.1    15.9    145    13.7    13.7    100 
 Granite Creek            6770    6.0     5.3    113     9.1     8.3    110 
 Grassy Lake              7265   10.4    10.9     95    13.8    15.1     91 
 Gros Ventre Summit       8750    7.8     5.3    147     7.2     5.5    131 
 Gunsight Pass            9820    7.1     5.0    142     7.7     5.7    135 
 Lewis Lake Divide        7850   12.0    11.4    105    15.2    15.0    101 
 Phillips Bench           8200    9.0     9.5     95    10.6    11.4     93 
 Salt River Summit        7640    3.3     4.2     79     5.2     6.7     78 
 Snake River Station      6920    6.1     5.5    111    10.2     9.9    103 
 Spring Creek Divide      9000    9.2     8.5    108     9.6     9.7     99 
 Thumb Divide             7980    7.8     5.5    142     9.4     7.8    121 
 Togwotee Pass            9580   14.9    10.1    148    14.8    10.5    141 
 Two Ocean Plateau        9240   18.6    11.3    165    13.2    11.5    115 
 Willow Creek             8080   11.6     9.6    121    14.8    14.1    105 
 Younts Peak              8350     -M     6.2       *     -M     6.9       *
                                                -----                  -----
                Basin Index (%)                  122                    104 
 

MADISON-GALLATIN

 Black Bear               8170   16.7    15.5    108    15.9    16.0     99 
 Canyon                   7870    5.9     4.8    123     7.6     7.1    107 
 Madison Plateau          7750    9.6     9.3    103    10.9    10.9    100 
 West Yellowstone         6700    4.6     4.0    115     7.3     6.2    118 
 Whiskey Creek            6800    5.3     5.8     91     6.9     8.8     78 
                                                -----                  -----
                Basin Index (%)                  107                     99 
 

YELLOWSTONE

 Beartooth Lake           9360   15.2     9.0    169    13.2     8.2    161 
 Burnt Mtn                5880    2.2     1.9    116     7.6     6.4    119 
 Canyon                   7870    5.9     4.8    123     7.6     7.1    107 
 Cole Creek               7850    7.2     5.9    122     5.1     6.2     82 
 Evening Star             9200   16.5    10.1    163    17.2    12.0    143 
 Fisher Creek             9100   21.1    13.6    155    17.7    13.6    130 
 Northeast Entrance       7350    3.6     3.2    112     6.9     5.7    121 
 Parker Peak              9400   15.1     8.8    172    12.8     7.8    164 
 Sylvan Lake              8420   11.2     8.4    133    11.6    10.3    113 
 Thumb Divide             7980    7.8     5.5    142     9.4     7.8    121 
 Two Ocean Plateau        9240   18.6    11.3    165    13.2    11.5    115 
 White Mill               8700   15.6     8.9    175    11.1    10.3    108 
 Wolverine                7650    5.4     4.2    129     8.7     5.7    153 
                                                -----                  -----
                Basin Index (%)                  152                    126 
 

WIND RIVER

 Burroughs Creek          8750    6.2      -M       *    7.7      -M       *
 Castle Creek             8400    3.7      -M       *    5.0      -M       *
 Cold Springs             9630    4.6     3.0    153     5.1     4.6    111 
 Deer Park                9700    6.9     5.7    121     7.5     7.9     95 
 Hobbs Park              10100   10.0     6.1    164     8.2     5.8    141 
 Kirwin                   9550    9.4     4.2    224     7.9     5.2    152 
 Little Warm              9370    8.7     4.1    212     8.6     5.7    151 
 Owl Creek                8975    2.3     2.3    100     3.9     2.7    144 
 South Pass               9040    5.8     5.8    100     4.6     7.6     61 
 St. Lawrence Alt         8620    2.9     2.8    104     5.4     4.1    132 
 Togwotee Pass            9580   14.9    10.1    148    14.8    10.5    141 
 Townsend Creek           8700    4.2     3.6    117     5.6     5.5    102 
                                                -----                  -----
                Basin Index (%)                  146                    120 
 

BIGHORN BASIN

 Bald Mtn.                9380    8.8     7.5    117     5.6     7.3     77 
 Bear Trap Meadow         8200    3.5     2.4    146     4.9     4.0    122 
 Bone Springs Div         9350    6.8     6.9     99     5.2     6.6     79 
 Grave Springs            8550    2.8     3.0     93     2.7     4.7     57 
 Kirwin                   9550    9.4     4.2    224     7.9     5.2    152 
 Marquette                8760    3.4      -M       *    6.2      -M       *
 Middle Powder            7760    4.1     4.6     89     3.0     5.8     52 
 Owl Creek                8975    2.3     2.3    100     3.9     2.7    144 
 Powder River Pass        9480    6.9     4.2    164     5.6     5.5    102 
 Shell Creek              9580    8.9     6.8    131     6.0     6.1     98 
 Timber Creek             7950    1.9     2.0     95     1.5     3.8     39 
                                                -----                  -----
                Basin Index (%)                  126                     90 
 

SHOSHONE RIVER

 Blackwater               9780   16.3     9.7    168    13.9     9.2    151 
 Evening Star             9200   16.5    10.1    163    17.2    12.0    143 
 Marquette                8760    3.4      -M       *    6.2      -M       *
 Sylvan Road              7120    4.9     4.8    102     9.3     8.3    112 
 Younts Peak              8350     -M     6.2       *     -M     6.9       *
                                                -----                  -----
                Basin Index (%)                  153                    137 
 

POWDER RIVER

 Bear Trap Meadow         8200    3.5     2.4    146     4.9     4.0    122 
 Cloud Peak Reservoir     9860    5.7     5.6    102     6.0     5.9    102 
 Grave Springs            8550    2.8     3.0     93     2.7     4.7     57 
 Hansen Sawmill           8360    2.7     2.7    100     4.1     3.8    108 
 Middle Powder            7760    4.1     4.6     89     3.0     5.8     52 
 Powder River Pass        9480    6.9     4.2    164     5.6     5.5    102 
 Soldier Park             8720    1.4      -M       *    4.0      -M       *
                                                -----                  -----
                Basin Index (%)                  114                     89 
 

TONGUE RIVER

 Big Goose                7990    2.5     3.4     74     3.3     5.1     65 
 Bone Springs Div         9350    6.8     6.9     99     5.2     6.6     79 
 Burgess Junction         7880    3.3     4.3     77     3.3     5.6     59 
 Dome Lake                8880    3.8     4.9     78     4.3     6.4     67 
 Little Goose             8870    3.3      -M       *    5.0      -M       *
 Sucker Creek             8880    3.8     4.7     81      -M     6.4       *
 Tie Creek                6870    1.1     1.6     69     2.4     5.3     45 
                                                -----                  -----
                Basin Index (%)                   83                     64 
 

BELLE FOURCHE

 Cole Canyon              5910    1.7     1.5    113     3.7     4.4     84 
                                                -----                  -----
                Basin Index (%)                  113                     84 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    2.5     2.7     93     4.6     5.6     82 
 North Rapid Creek        6130    2.8     2.8    100     3.2     4.7     68 
                                                -----                  -----
                Basin Index (%)                   96                     76 
 

UPPER N. PLATTE

 Arapaho Ridge           10960    7.7     8.7     89     8.0    10.0     80 
 Blackhall Mtn            9820   10.3      -M       *   10.8      -M       *
 Columbine                9160    4.5     8.0     56     9.6    10.7     90 
 Divide Peak              8880    5.2     7.5     69     8.5     9.5     89 
 Joe Wright              10120    6.4     8.9     72    12.1    11.4    106 
 Laprele Creek            8375    2.3     3.6     64     3.8     5.6     68 
 Med Bow                 10500   14.7      -M       *   13.0      -M       *
 North French Creek      10130   10.2    10.6     96    10.9    11.1     98 
 Never Summer            10280    7.6     8.0     95     6.8      -M       *
 Old Battle              10000    9.3    11.7     79     8.7    14.9     58 
 Rawah                    9020    4.2     3.9    108     7.2     6.8    106 
 Sage Creek Basin         7850    3.6     5.1     71     5.2     6.6     79 
 Sand Lake               10050   11.1    10.5    106     9.4    10.4     90 
 South Brush Creek        8440    4.3     4.3    100     5.9     6.7     88 
 Tower                   10500     -M    18.2       *     -M    16.9       *
 Webber Springs           9250    6.4     8.8     73     8.7    11.4     76 
 Willow Creek Pass        9540    6.5     5.1    127     6.9     6.1    113 
 Zirkel                   9340    6.7     8.6     78    11.5    12.4     93 
                                                -----                  -----
                Basin Index (%)                   85                     87 
 

SWEETWATER

 Deer Park                9700    6.9     5.7    121     7.5     7.9     95 
 Larsen Creek             9000    2.9     4.4     66     5.4      -M       *
 South Pass               9040    5.8     5.8    100     4.6     7.6     61 
                                                -----                  -----
                Basin Index (%)                   98                     78 
 

LOWER N. PLATTE

 Casper Mtn.              7900    4.0     5.4     74     3.4     7.0     49 
 Laprele Creek            8375    2.3     3.6     64     3.8     5.6     68 
 Reno Hill                8400    4.6     5.4     85     5.7     6.6     86 
 Windy Peak               7900    2.0     2.9     69     3.6     4.8     75 
                                                -----                  -----
                Basin Index (%)                   75                     69 
 

LARAMIE RIVER

 Brooklyn Lake           10240    8.0     7.3    110     9.2     8.5    108 
 Cinnabar Park            9574    9.0     7.8    115    11.3    10.3    110 
 Crow Creek               8330     .8     3.9     21     5.6     5.1    110 
 Deadman Hill            10220    8.9     6.8    131     9.0     7.3    123 
 Rawah                    9020    4.2     3.9    108     7.2     6.8    106 
 Roach                    9700    6.1     6.4     95     8.4     8.3    101 
                                                -----                  -----
                Basin Index (%)                  102                    110 
 

S. PLATTE

 Black Mountain           8920    4.3      -M       *    6.7      -M       *
 Crow Creek               8330     .8     3.9     21     5.6     5.1    110 
 Deadman Hill            10220    8.9     6.8    131     9.0     7.3    123 
                                                -----                  -----
                Basin Index (%)                   91                    118 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    1.4     3.4     41     4.3     6.5     66 
 Divide Peak              8880    5.2     7.5     69     8.5     9.5     89 
 Elk River                8700    4.7     5.9     80     6.8     8.3     82 
 Little Snake River       8915    6.1     7.7     79    10.8    13.5     80 
 Old Battle              10000    9.3    11.7     79     8.7    14.9     58 
 Sage Creek Basin         7850    3.6     5.1     71     5.2     6.6     79 
 Sandstone RS             8150    3.0     4.1     73      -M     7.9       *
 Whiskey Park             8950    6.7     8.6     78     9.7    11.0     88 
                                                -----                  -----
                Basin Index (%)                   74                     77 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    5.7     5.1    112     6.0     5.7    105 
 Blind Bull Sum           8650   13.0     8.2    159     8.2     8.4     98 
 East Rim Divide          7930    3.8     3.8    100     4.8     4.9     98 
 Elkhart Park G.S.        9400    4.8     4.9     98     5.1     5.8     88 
 Gros Ventre Summit       8750    7.8     5.3    147     7.2     5.5    131 
 Gunsight Pass            9820    7.1     5.0    142     7.7     5.7    135 
 Kendall R.S.             7740    5.4     4.3    126     6.6     5.8    114 
 Loomis Park              8240    6.2     5.6    111     6.9     7.2     96 
 New Fork Lake            8340    4.6     4.0    115     4.2     4.6     91 
 Pocket Creek             9360    5.5      -M       *    4.3      -M       *
 Snider Basin             8060    3.9     4.6     85     6.1     5.9    103 
 Spring Creek Divide      9000    9.2     8.5    108     9.6     9.7     99 
 Triple Peak              8500    9.9     7.6    130    11.9     9.9    120 
                                                -----                  -----
                Basin Index (%)                  122                    107 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    3.2      -M       *    4.2      -M       *
 Buck Pasture             9632    5.0      -M       *    5.7      -M       *
 EF Blacks Fork GS        9360    3.0      -M       *    3.8      -M       *
 Hams Fork                7840    2.8     4.0     70     4.0     4.7     85 
 Hewinta                  9500    2.6     3.3     79     5.0     6.1     82 
 Hickerson Park           9122    3.0     2.4    125     2.7     4.7     57 
 Hole-in-Rock             9168    2.5     2.8     89     3.1     4.4     70 
 Indian Creek             9425    7.9     9.5     83     6.1     8.8     69 
 Kelley R.S.              8180    4.6     5.6     82     5.8     7.5     77 
 Spirit Lk               10235    3.4      -M       *    3.8      -M       *
 Steel Creek Park        10158    5.4     5.8     93     5.9     7.0     84 
                                                -----                  -----
                Basin Index (%)                   86                     75 
 

UPPER BEAR RIVER

 Bear River RS            8777    3.2      -M       *    4.7      -M       *
 Bug Lake                 7987    5.1     5.8     88     7.6     8.2     93 
 Burts Miller Ranch       8000    2.0      -M       *    3.0      -M       *
 Chalk Creek #1           9171    6.0     9.4     64     6.8    10.7     64 
 Hayden Fork              9130    5.0     4.8    104     6.6     8.8     75 
 Kelley R.S.              8180    4.6     5.6     82     5.8     7.5     77 
 Lily Lake                9133    4.6     4.7     98     5.0     7.5     67 
 Monte Cristo             8932    8.8     9.1     97     8.7    10.7     81 
 Salt River Summit        7640    3.3     4.2     79     5.2     6.7     78 
                                                -----                  -----
                Basin Index (%)                   86                     76 

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


 -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.