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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


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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 WEDNESDAY: MARCH 15 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   26.7    14.2    188    36.9    18.6    198 
 Black Bear               8170   42.7    32.0    133    48.6    33.7    144 
 Blind Bull Sum           8650   40.3    20.0    202      -M    17.2       *
 Cottonwood Creek         7670   26.4    18.9    140    34.4    21.2    162 
 East Rim Divide          7930   18.9     9.5    199    19.8    10.3    192 
 Grand Targhee            9260   40.0    32.5    123      -M    26.5       *
 Granite Creek            6770   30.0    14.9    201    34.3    17.7    194 
 Grassy Lake              7265   35.8    28.5    126    49.4    31.8    155 
 Gros Ventre Summit       8750     -M    11.1       *     -M    11.1       *
 Gunsight Pass            9820   19.6    11.7    168    22.1    11.9    186 
 Lewis Lake Divide        7850   38.3    27.2    141    49.8    31.3    159 
 Phillips Bench           8200   35.0    21.8    161    43.7    24.6    178 
 Salt River Summit        7760   20.5    11.6    177      -M    14.5       *
 Snake River Station      6920   21.6    15.2    142    32.5    19.9    163 
 Spring Creek Divide      9000   36.6    20.1    182    37.0    20.8    178 
 Thumb Divide             7980   22.0    13.6    162    25.1    16.0    157 
 Togwotee Pass            9580   30.5    20.0    152    34.7    21.1    164 
 Two Ocean Plateau        9240     -M    23.5       *     -M    23.7       *
 Willow Creek             8380   29.7    24.7    120    45.0    29.1    155 
 Younts Peak              8350   26.7    12.8    209    28.8    13.7    210 
                                                -----                  -----
                Basin Index (%)                  155                    169 
 

MADISON-GALLATIN

 Black Bear               8170   42.7    32.0    133    48.6    33.7    144 
 Canyon                   7870   16.9    11.6    146    23.4    14.2    165 
 Madison Plateau          7750   25.2    19.8    127    32.6    23.1    141 
 West Yellowstone         6700   12.1     9.9    122    20.9    12.5    167 
 Whiskey Creek            6800   14.9    13.6    110    24.1    17.7    136 
                                                -----                  -----
                Basin Index (%)                  129                    148 
 

YELLOWSTONE

 Beartooth Lake           9360   29.4    18.6    158    24.9    17.1    146 
 Burnt Mtn                5880    5.4     4.4    123    12.0    10.5    114 
 Canyon                   7870   16.9    11.6    146    23.4    14.2    165 
 Cole Creek               7850    9.4    11.5     82     6.7    10.2     66 
 Evening Star             9200   35.0    21.6    162    40.2    23.7    170 
 Fisher Creek             9100   39.0    27.7    141    41.9    27.7    151 
 Northeast Entrance       7350   11.8     8.7    136    18.1    10.7    169 
 Parker Peak              9400   30.1    17.1    176    28.0    15.3    183 
 Sylvan Lake              8420   22.4    17.5    128    33.8    19.4    174 
 Thumb Divide             7980   22.0    13.6    162    25.1    16.0    157 
 Two Ocean Plateau        9240     -M    23.5       *     -M    23.7       *
 White Mill               8700   31.0    19.4    160    31.9    20.6    155 
 Wolverine                7650   14.4     8.8    164    19.5    10.7    182 
                                                -----                  -----
                Basin Index (%)                  148                    156 
 

WIND RIVER

 Burroughs Creek          8750   25.0      -M       *   25.2      -M       *
 Castle Creek             8400   12.3      -M       *   14.4      -M       *
 Cold Springs             9630   12.5     6.1    205    14.9     8.2    182 
 Deer Park                9700   28.0    12.3    228    32.2    16.6    194 
 Hobbs Park              10100   22.4    11.2    200    20.4    10.6    192 
 Kirwin                   9550   18.1     8.1    223    20.9     9.6    218 
 Little Warm              9370   15.6     9.0    173    21.3    10.8    197 
 Owl Creek                8975    7.0     4.5    156     8.8     4.7    187 
 South Pass               9040   26.3    12.9    204    23.7    14.8    160 
 St. Lawrence Alt         8620    6.9     5.9    117    12.0     7.2    167 
 Togwotee Pass            9580   30.5    20.0    152    34.7    21.1    164 
 Townsend Creek           8700   12.3     7.6    162    15.9     9.6    166 
                                                -----                  -----
                Basin Index (%)                  184                    181 
 

BIGHORN BASIN

 Bald Mtn.                9380   16.8    16.2    104    14.5    14.3    101 
 Bear Trap Meadow         8200    5.1     4.8    106     6.1     6.8     90 
 Bone Springs Div         9350   15.4    13.6    113    14.6    12.8    114 
 Grave Springs            8550    6.0     7.7     78     6.2     8.6     72 
 Kirwin                   9550   18.1     8.1    223    20.9     9.6    218 
 Marquette                8760    7.4      -M       *   11.8      -M       *
 Middle Powder            7760    6.4     9.1     70     6.2     9.6     65 
 Owl Creek                8975    7.0     4.5    156     8.8     4.7    187 
 Powder River Pass        9480    7.0     8.8     80    10.2    10.4     98 
 Shell Creek              9580   14.3    12.5    114    11.4    11.4    100 
 Timber Creek             7950    5.4     4.2    129     6.9     5.8    119 
                                                -----                  -----
                Basin Index (%)                  113                    113 
 

SHOSHONE RIVER

 Blackwater               9780   34.4    19.7    175    38.3    17.6    218 
 Evening Star             9200   35.0    21.6    162    40.2    23.7    170 
 Marquette                8760    7.4      -M       *   11.8      -M       *
 Sylvan Road              7120   15.2    10.2    149    28.1    14.8    190 
 Younts Peak              8350   26.7    12.8    209    28.8    13.7    210 
                                                -----                  -----
                Basin Index (%)                  173                    194 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.1     4.8    106     6.1     6.8     90 
 Cloud Peak Reservoir     9860   11.6    12.2     95    12.8    10.6    121 
 Grave Springs            8550    6.0     7.7     78     6.2     8.6     72 
 Hansen Sawmill           8360    7.3     5.3    138     9.2     6.8    135 
 Middle Powder            7760    6.4     9.1     70     6.2     9.6     65 
 Powder River Pass        9480    7.0     8.8     80    10.2    10.4     98 
 Soldier Park             8720   11.4      -M       *    9.1      -M       *
                                                -----                  -----
                Basin Index (%)                   91                     96 
 

TONGUE RIVER

 Big Goose                7990    8.4     7.4    114     9.3     8.7    107 
 Bone Springs Div         9350   15.4    13.6    113    14.6    12.8    114 
 Burgess Junction         7880    8.3     9.4     88     9.0    10.0     90 
 Dome Lake                8880   12.3     9.7    127    12.0    10.9    110 
 Little Goose             8870    9.2      -M       *   11.7      -M       *
 Sucker Creek             8880    9.9    10.4     95     9.7    11.7     83 
 Tie Creek                6870    5.4     4.7    115     9.7     9.3    104 
                                                -----                  -----
                Basin Index (%)                  108                    101 
 

BELLE FOURCHE

 Cole Canyon              5910    2.8     5.4     52     6.5     7.7     84 
                                                -----                  -----
                Basin Index (%)                   52                     84 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    4.8     7.1     68     7.8    10.2     76 
 North Rapid Creek        6130    5.0     6.4     78     6.4     8.3     77 
                                                -----                  -----
                Basin Index (%)                   73                     77 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   23.8    18.0    132    23.6    19.0    124 
 Blackhall Mtn            9820   34.6      -M       *   34.4      -M       *
 Columbine                9160   24.5    21.5    114    25.8    22.2    116 
 Divide Peak              8880   18.7    17.2    109    21.0    18.4    114 
 Joe Wright              10120   18.1    18.7     97    25.7    22.0    117 
 Laprele Creek            8375   11.2     8.8    127    10.4    10.4    100 
 Med Bow                 10500   36.7      -M       *   32.1      -M       *
 North French Creek      10130   24.3    23.9    102    25.0    23.0    109 
 Never Summer            10280   21.3    17.3    123    17.3      -M       *
 Old Battle              10000   35.3    26.0    136    36.2    30.5    119 
 Rawah                    9020   11.9     9.2    129    15.1    11.6    130 
 Sage Creek Basin         7850   14.1    11.8    119    15.2    12.8    119 
 Sand Lake               10050   28.1    23.5    120    25.5    20.9    122 
 South Brush Creek        8440   10.5    11.2     94    11.4    12.9     88 
 Tower                   10500   39.3    38.9    101    41.5    34.6    120 
 Webber Springs           9250   28.2    20.5    138    31.5    23.1    136 
 Willow Creek Pass        9540   16.4    10.5    156    17.1    11.3    151 
 Zirkel                   9340   39.6    25.5    155    40.2    24.8    162 
                                                -----                  -----
                Basin Index (%)                  121                    123 
 

SWEETWATER

 Deer Park                9700   28.0    12.3    228    32.2    16.6    194 
 Larsen Creek             9000   18.7    10.7    175    21.0      -M       *
 South Pass               9040   26.3    12.9    204    23.7    14.8    160 
                                                -----                  -----
                Basin Index (%)                  203                    178 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.9    11.8     92    10.4    12.3     85 
 Laprele Creek            8375   11.2     8.8    127    10.4    10.4    100 
 Reno Hill                8400   11.1    11.5     97    11.7    12.4     94 
 Windy Peak               7900    9.7     6.7    145    10.0     8.7    115 
                                                -----                  -----
                Basin Index (%)                  111                     97 
 

LARAMIE RIVER

 Brooklyn Lake           10240   24.2    17.3    140    21.6    17.8    121 
 Cinnabar Park            9574   18.5    17.8    104    20.9    20.8    100 
 Crow Creek               8330    5.1     7.1     72     8.2     8.6     95 
 Deadman Hill            10220   19.1    13.4    143    18.2    14.3    127 
 Rawah                    9020   11.9     9.2    129    15.1    11.6    130 
 Roach                    9700   15.4    13.5    114    18.4    16.3    113 
                                                -----                  -----
                Basin Index (%)                  120                    115 
 

S. PLATTE

 Black Mountain           8920    9.4      -M       *   10.5      -M       *
 Crow Creek               8330    5.1     7.1     72     8.2     8.6     95 
 Deadman Hill            10220   19.1    13.4    143    18.2    14.3    127 
                                                -----                  -----
                Basin Index (%)                  118                    115 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    9.4    10.9     86    15.6    13.2    118 
 Divide Peak              8880   18.7    17.2    109    21.0    18.4    114 
 Elk River                8700   19.6    17.2    114    19.1    17.4    110 
 Little Snake River       8915   31.1    20.5    152    36.7    26.1    141 
 Old Battle              10000   35.3    26.0    136    36.2    30.5    119 
 Sage Creek Basin         7850   14.1    11.8    119    15.2    12.8    119 
 Sandstone RS             8150   12.4    11.6    107    15.3    16.3     94 
 Whiskey Park             8950   27.5    23.8    116    28.3    24.4    116 
                                                -----                  -----
                Basin Index (%)                  121                    118 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.2    11.1    182    21.7    11.4    190 
 Blind Bull Sum           8650   40.3    20.0    202      -M    17.2       *
 East Rim Divide          7930   18.9     9.5    199    19.8    10.3    192 
 Elkhart Park G.S.        9400   17.9    10.3    174    22.1    11.4    194 
 Gros Ventre Summit       8750     -M    11.1       *     -M    11.1       *
 Gunsight Pass            9820   19.6    11.7    168    22.1    11.9    186 
 Kendall R.S.             7740   23.4    10.9    215    27.5    12.6    218 
 Loomis Park              8240   27.3    13.0    210    30.4    15.1    201 
 New Fork Lake            8340   16.2     9.2    176    16.4     9.5    173 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   19.7    10.8    182    25.4    12.4    205 
 Spring Creek Divide      9000   36.6    20.1    182    37.0    20.8    178 
 Triple Peak              8500   35.2    19.0    185    37.5    22.0    170 
                                                -----                  -----
                Basin Index (%)                  189                    189 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869   10.0      -M       *   13.6      -M       *
 Buck Pasture             9632   18.5      -M       *   20.6      -M       *
 EF Blacks Fork GS        9360   15.4      -M       *     -M      -M       *
 Hams Fork                7840   16.8    10.1    166    18.2     9.8    186 
 Hewinta                  9500   10.7     9.1    118    14.1    11.9    118 
 Hickerson Park           9122    7.8     6.6    118     8.5     8.5    100 
 Hole-in-Rock             9168    6.2     6.3     98     9.1     7.9    115 
 Indian Creek             9425   36.7    20.7    177      -M    19.3       *
 Kelley R.S.              8180   24.9    12.9    193    28.4    15.7    181 
 Spirit Lk               10235   13.5      -M       *   14.7      -M       *
 Steel Creek Park        10158   15.5    13.0    119    17.1    13.8    124 
                                                -----                  -----
                Basin Index (%)                  151                    141 
 

UPPER BEAR RIVER

 Bear River RS            8777   11.9      -M       *   15.4      -M       *
 Bug Lake                 7987   30.2    16.4    184    30.0    16.9    178 
 Burts Miller Ranch       8000    6.6      -M       *    8.4      -M       *
 Chalk Creek #1           9171   31.4    20.5    153      -M    21.4       *
 Hayden Fork              9130   22.0    14.0    157    26.7    17.9    149 
 Kelley R.S.              8180   24.9    12.9    193    28.4    15.7    181 
 Lily Lake                9133   14.4    11.3    127    16.9    14.5    117 
 Monte Cristo             8932   33.8    23.5    144    34.7    22.4    155 
 Salt River Summit        7760   20.5    11.6    177      -M    14.5       *
                                                -----                  -----
                Basin Index (%)                  161                    156 

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


 -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.