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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 10:58a, 5/23/18
Temperature 61.8°F
Wind 5.0 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: DECEMBER 19 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    8.7     5.7    153    15.9     8.4    189 
 Black Bear               8170   13.1    14.0     94    22.3    14.8    151 
 Blind Bull Sum           8650   11.6     7.6    153    13.4     7.8    172 
 Cottonwood Creek         7670    8.2     6.8    121    14.8     9.4    157 
 East Rim Divide          7930    4.6     3.5    131     7.9     4.6    172 
 Grand Targhee            9260   20.6    14.1    146    19.6    12.6    156 
 Granite Creek            6770    7.2     4.6    157    13.6     7.7    177 
 Grassy Lake              7265   12.3     9.9    124    23.8    13.8    172 
 Gros Ventre Summit       8750    5.1     4.8    106     9.2     5.2    177 
 Gunsight Pass            9820    5.7     4.3    133    10.0     5.3    189 
 Lewis Lake Divide        7850   10.3    10.0    103    21.7    13.8    157 
 Phillips Bench           8200    7.9     8.5     93    17.5    10.4    168 
 Salt River Summit        7760    4.2     3.6    117     9.8     6.1    161 
 Snake River Station      6920    8.3     5.1    163    16.9     9.3    182 
 Spring Creek Divide      9000   10.4     8.0    130    15.7     9.0    174 
 Thumb Divide             7980    5.3     4.9    108    11.4     7.4    154 
 Togwotee Pass            9580   11.6     9.3    125    15.2     9.8    155 
 Two Ocean Plateau        9240   16.0    10.7    150    17.6    10.8    163 
 Willow Creek             8380    9.5     8.6    110    20.2    13.1    154 
 Younts Peak              8350    6.4     5.6    114    11.2     6.5    172 
                                                -----                  -----
                Basin Index (%)                  125                    166 
 

MADISON-GALLATIN

 Black Bear               8170   13.1    14.0     94    22.3    14.8    151 
 Canyon                   7870    5.6     4.2    133    11.6     6.5    178 
 Madison Plateau          7750    7.0     8.3     84    16.9    10.2    166 
 West Yellowstone         6700    3.7     3.5    106    11.2     5.8    193 
 Whiskey Creek            6800    4.1     5.1     80    12.0     8.2    146 
                                                -----                  -----
                Basin Index (%)                   95                    163 
 

YELLOWSTONE

 Beartooth Lake           9360   10.4     8.3    125     5.4     7.7     70 
 Burnt Mtn                5880    3.0     1.7    176     6.8     6.1    111 
 Canyon                   7870    5.6     4.2    133    11.6     6.5    178 
 Cole Creek               7850    4.4     5.6     79     4.4     5.9     75 
 Evening Star             9200   12.2     9.2    133    18.2    11.2    162 
 Fisher Creek             9100   11.8    12.4     95    17.2    12.5    138 
 Northeast Entrance       7350    4.0     2.8    143     9.3     5.3    175 
 Parker Peak              9400   10.7     8.1    132    13.9     7.4    188 
 Sylvan Lake              8420    8.0     7.6    105    18.0     9.5    189 
 Thumb Divide             7980    5.3     4.9    108    11.4     7.4    154 
 Two Ocean Plateau        9240   16.0    10.7    150    17.6    10.8    163 
 White Mill               8700    9.9     8.3    119    13.4     9.5    141 
 Wolverine                7650    4.9     3.5    140     8.6     5.4    159 
                                                -----                  -----
                Basin Index (%)                  122                    148 
 

WIND RIVER

 Burroughs Creek          8750    6.8      -M       *    9.0      -M       *
 Castle Creek             8400    3.7      -M       *    5.7      -M       *
 Cold Springs             9630    3.4     2.8    121     5.9     4.4    134 
 Deer Park                9700    7.8     5.1    153    11.5     7.4    155 
 Hobbs Park              10100    6.8     5.9    115     7.8     5.5    142 
 Kirwin                   9550    5.9     4.0    148     8.4     4.9    171 
 Little Warm              9370    3.3     3.8     87     8.0     5.3    151 
 Owl Creek                8975    2.1     2.2     95     3.5     2.6    135 
 South Pass               9040    7.5     5.4    139     8.3     7.2    115 
 St. Lawrence Alt         8620    1.5     2.6     58     5.1     3.9    131 
 Togwotee Pass            9580   11.6     9.3    125    15.2     9.8    155 
 Townsend Creek           8700    2.9     3.3     88     5.7     5.2    110 
                                                -----                  -----
                Basin Index (%)                  119                    141 
 

BIGHORN BASIN

 Bald Mtn.                9380    9.1     7.0    130     7.8     6.8    115 
 Bear Trap Meadow         8200    1.3     2.1     62     3.2     3.8     84 
 Bone Springs Div         9350    6.2     6.3     98     7.2     6.1    118 
 Grave Springs            8550    2.1     2.6     81     3.7     4.4     84 
 Kirwin                   9550    5.9     4.0    148     8.4     4.9    171 
 Marquette                8760    3.8      -M       *    6.4      -M       *
 Middle Powder            7760    2.7     3.9     69     3.4     5.4     63 
 Owl Creek                8975    2.1     2.2     95     3.5     2.6    135 
 Powder River Pass        9480    1.6     3.8     42     4.2     5.1     82 
 Shell Creek              9580    6.8     6.2    110     5.7     5.7    100 
 Timber Creek             7950    2.6     1.9    137     4.0     3.6    111 
                                                -----                  -----
                Basin Index (%)                  101                    106 
 

SHOSHONE RIVER

 Blackwater               9780   13.9     9.1    153    16.8     8.6    195 
 Evening Star             9200   12.2     9.2    133    18.2    11.2    162 
 Marquette                8760    3.8      -M       *    6.4      -M       *
 Sylvan Road              7120    5.5     4.2    131    15.1     7.8    194 
 Younts Peak              8350    6.4     5.6    114    11.2     6.5    172 
                                                -----                  -----
                Basin Index (%)                  135                    180 
 

POWDER RIVER

 Bear Trap Meadow         8200    1.3     2.1     62     3.2     3.8     84 
 Cloud Peak Reservoir     9860    3.4     5.1     67     5.7     5.6    102 
 Grave Springs            8550    2.1     2.6     81     3.7     4.4     84 
 Hansen Sawmill           8360    2.4     2.4    100     4.1     3.6    114 
 Middle Powder            7760    2.7     3.9     69     3.4     5.4     63 
 Powder River Pass        9480    1.6     3.8     42     4.2     5.1     82 
 Soldier Park             8720    2.2      -M       *    4.5      -M       *
                                                -----                  -----
                Basin Index (%)                   68                     87 
 

TONGUE RIVER

 Big Goose                7990    3.1     3.1    100     4.4     4.7     94 
 Bone Springs Div         9350    6.2     6.3     98     7.2     6.1    118 
 Burgess Junction         7880    3.3     3.9     85     4.8     5.1     94 
 Dome Lake                8880    3.0     4.5     67     5.8     6.0     97 
 Little Goose             8870    3.5      -M       *    5.5      -M       *
 Sucker Creek             8880    4.1     4.2     98     4.8     5.9     81 
 Tie Creek                6870    2.7     1.2    225     5.5     4.9    112 
                                                -----                  -----
                Basin Index (%)                   97                     99 
 

BELLE FOURCHE

 Cole Canyon              5910    2.1     1.0    210     3.3     4.1     80 
                                                -----                  -----
                Basin Index (%)                  210                     80 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    2.8     2.2    127     4.2     5.2     81 
 North Rapid Creek        6130    2.6     2.4    108     2.8     4.3     65 
                                                -----                  -----
                Basin Index (%)                  117                     74 
 

UPPER N. PLATTE

 Arapaho Ridge           10960    9.2     7.8    118    11.1     9.3    119 
 Blackhall Mtn            9820   10.7      -M       *   12.7      -M       *
 Columbine                9160    8.6     7.1    121    10.2     9.7    105 
 Divide Peak              8880    5.6     6.6     85     7.8     8.8     89 
 Joe Wright              10120    6.2     8.2     76    11.2    10.4    108 
 Laprele Creek            8375    3.3     3.1    106     3.7     5.1     73 
 Med Bow                 10500   13.3      -M       *   13.9      -M       *
 North French Creek      10130    7.9     9.8     81    10.1    10.2     99 
 Never Summer            10280    7.6     7.0    109     8.0      -M       *
 Old Battle              10000   10.0    10.7     93    10.7    13.7     78 
 Rawah                    9020    4.7     3.7    127     7.0     6.2    113 
 Sage Creek Basin         7850    3.9     4.3     91     5.5     6.0     92 
 Sand Lake               10050    9.1     9.6     95     9.2     9.6     96 
 South Brush Creek        8440    2.8     4.0     70     4.0     6.2     65 
 Tower                   10500   12.6    16.8     75    15.4    15.7     98 
 Webber Springs           9250    7.5     8.1     93    12.2    10.5    116 
 Willow Creek Pass        9540    6.4     4.7    136     7.2     5.6    129 
 Zirkel                   9340   10.3     7.7    134    13.9    11.5    121 
                                                -----                  -----
                Basin Index (%)                   97                    101 
 

SWEETWATER

 Deer Park                9700    7.8     5.1    153    11.5     7.4    155 
 Larsen Creek             9000    5.5     3.9    141     9.9      -M       *
 South Pass               9040    7.5     5.4    139     8.3     7.2    115 
                                                -----                  -----
                Basin Index (%)                  144                    136 
 

LOWER N. PLATTE

 Casper Mtn.              7900    3.5     4.9     71     4.4     6.6     67 
 Laprele Creek            8375    3.3     3.1    106     3.7     5.1     73 
 Reno Hill                8400     -M     5.0       *     -M     6.2       *
 Windy Peak               7900    3.2     2.6    123     3.9     4.5     87 
                                                -----                  -----
                Basin Index (%)                   94                     74 
 

LARAMIE RIVER

 Brooklyn Lake           10240    6.7     6.8     99     7.1     7.8     91 
 Cinnabar Park            9574    6.2     7.5     83     8.8     9.6     92 
 Crow Creek               8330    2.3     3.7     62     3.5     4.6     76 
 Deadman Hill            10220    6.7     6.0    112     7.3     6.6    111 
 Rawah                    9020    4.7     3.7    127     7.0     6.2    113 
 Roach                    9700     -M     5.5       *     -M     7.5       *
                                                -----                  -----
                Basin Index (%)                   96                     97 
 

S. PLATTE

 Black Mountain           8920    3.5      -M       *    5.2      -M       *
 Crow Creek               8330    2.3     3.7     62     3.5     4.6     76 
 Deadman Hill            10220    6.7     6.0    112     7.3     6.6    111 
                                                -----                  -----
                Basin Index (%)                   93                     96 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    3.2     3.0    107      -M     6.0       *
 Divide Peak              8880    5.6     6.6     85     7.8     8.8     89 
 Elk River                8700    7.2     5.2    138     8.3     7.6    109 
 Little Snake River       8915    9.5     6.4    148    14.3    12.4    115 
 Old Battle              10000   10.0    10.7     93    10.7    13.7     78 
 Sage Creek Basin         7850    3.9     4.3     91     5.5     6.0     92 
 Sandstone RS             8150    4.5     3.7    122     4.7     7.2     65 
 Whiskey Park             8950    7.5     7.8     96    11.2    10.1    111 
                                                -----                  -----
                Basin Index (%)                  108                     95 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    7.0     4.7    149     9.9     5.3    187 
 Blind Bull Sum           8650   11.6     7.6    153    13.4     7.8    172 
 East Rim Divide          7930    4.6     3.5    131     7.9     4.6    172 
 Elkhart Park G.S.        9400    4.3     4.5     96     9.7     5.4    180 
 Gros Ventre Summit       8750    5.1     4.8    106     9.2     5.2    177 
 Gunsight Pass            9820    5.7     4.3    133    10.0     5.3    189 
 Kendall R.S.             7740    6.4     3.8    168    10.8     5.4    200 
 Loomis Park              8240    7.4     5.0    148    12.7     6.6    192 
 New Fork Lake            8340    5.0     3.4    147     5.9     4.3    137 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060    4.8     4.0    120    10.1     5.4    187 
 Spring Creek Divide      9000   10.4     8.0    130    15.7     9.0    174 
 Triple Peak              8500   12.1     6.9    175    16.9     9.2    184 
                                                -----                  -----
                Basin Index (%)                  140                    180 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    3.7      -M       *    5.8      -M       *
 Buck Pasture             9700    5.4      -M       *    8.4      -M       *
 EF Blacks Fork GS        9360    5.0      -M       *    5.6      -M       *
 Hams Fork                7840    3.9     3.5    111     7.9     4.4    180 
 Hewinta                  9519    3.8     3.0    127     6.1     5.8    105 
 Hickerson Park           9145    3.3     2.1    157     3.5     4.4     80 
 Hole-in-Rock             9150    2.1     2.3     91     4.1     4.2     98 
 Indian Creek             9425    9.9     8.3    119    13.8     8.2    168 
 Kelley R.S.              8180    6.8     4.7    145    12.3     7.0    176 
 Spirit Lk               10235    4.2      -M       *    6.5      -M       *
 Steel Creek Park        10200    5.6     5.5    102     7.8     6.6    118 
                                                -----                  -----
                Basin Index (%)                  120                    137 
 

UPPER BEAR RIVER

 Bear River RS            8777    4.0      -M       *    5.9      -M       *
 Bug Lake                 7950    9.0     5.3    170    10.3     7.6    136 
 Burts Miller Ranch       8000    2.3      -M       *    3.1      -M       *
 Chalk Creek #1           8993    9.6     8.6    112    11.9    10.0    119 
 Hayden Fork              9212    6.9     4.4    157    10.8     8.2    132 
 Kelley R.S.              8180    6.8     4.7    145    12.3     7.0    176 
 Lily Lake                9156    4.4     4.4    100     6.8     7.0     97 
 Monte Cristo             8960    9.2     8.4    110    12.4     9.9    125 
 Salt River Summit        7760    4.2     3.6    117     9.8     6.1    161 
                                                -----                  -----
                Basin Index (%)                  127                    133 

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


 -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.