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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 3:33p, 5/22/18
Temperature 64.9°F
Wind 9.0 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 TUESDAY: APRIL 4 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   24.3    15.0    162    39.1    20.4    192 
 Black Bear               8170   44.9    37.0    121    52.5    37.3    141 
 Blind Bull Sum           8650   42.2    23.0    183      -M    19.1       *
 Cottonwood Creek         7670   27.0    21.2    127    36.9    24.1    153 
 East Rim Divide          7930   16.1    10.2    158    20.6    11.5    179 
 Grand Targhee            9260   44.3    37.6    118    39.2    30.2    130 
 Granite Creek            6770   26.5    14.7    180    35.5    19.3    184 
 Grassy Lake              7265   36.3    31.6    115    53.9    35.2    153 
 Gros Ventre Summit       8750     -M    13.0       *     -M    12.6       *
 Gunsight Pass            9820   22.5    13.6    165    24.3    13.4    181 
 Lewis Lake Divide        7850   44.8    29.6    151    54.6    34.6    158 
 Phillips Bench           8200   36.7    24.7    149    45.7    27.5    166 
 Salt River Summit        7760   19.3    13.0    148    28.2    16.3    173 
 Snake River Station      6920   18.6    15.1    123    35.3    21.9    161 
 Spring Creek Divide      9000   39.8    22.5    177    39.4    23.3    169 
 Thumb Divide             7980   22.5    14.7    153    27.6    18.1    152 
 Togwotee Pass            9580   33.0    21.8    151    37.7    23.7    159 
 Two Ocean Plateau        9240     -M    25.7       *     -M    26.5       *
 Willow Creek             8380   28.1    28.2    100    47.8    32.8    146 
 Younts Peak              8350   25.3    14.2    178    30.6    15.4    199 
                                                -----                  -----
                Basin Index (%)                  142                    160 
 

MADISON-GALLATIN

 Black Bear               8170   44.9    37.0    121    52.5    37.3    141 
 Canyon                   7870   17.6    12.4    142    25.3    15.8    160 
 Madison Plateau          7750   26.5    21.4    124    35.3    25.6    138 
 West Yellowstone         6700    7.4    10.0     74    22.6    13.8    164 
 Whiskey Creek            6800   13.3    15.0     89    26.2    19.6    134 
                                                -----                  -----
                Basin Index (%)                  115                    144 
 

YELLOWSTONE

 Beartooth Lake           9360   32.3    21.2    152    27.4    19.2    143 
 Burnt Mtn                5880     .0     4.6      0    14.7    12.6    117 
 Canyon                   7870   17.6    12.4    142    25.3    15.8    160 
 Cole Creek               7850   12.3    14.1     87     8.8    12.4     71 
 Evening Star             9200   37.9    23.8    159    44.3    26.5    167 
 Fisher Creek             9100   42.7    30.8    139    46.2    30.8    150 
 Northeast Entrance       7350    8.8     9.2     96    20.1    11.9    169 
 Parker Peak              9400   34.2    19.1    179    33.7    17.1    197 
 Sylvan Lake              8420   23.7    19.3    123    36.9    21.7    170 
 Thumb Divide             7980   22.5    14.7    153    27.6    18.1    152 
 Two Ocean Plateau        9240     -M    25.7       *     -M    26.5       *
 White Mill               8700   35.2    21.9    161    35.3    23.1    153 
 Wolverine                7650    6.3     9.4     67    20.6    11.9    173 
                                                -----                  -----
                Basin Index (%)                  136                    154 
 

WIND RIVER

 Burroughs Creek          8750   23.2      -M       *   27.1      -M       *
 Castle Creek             8400   11.0      -M       *   15.3      -M       *
 Cold Springs             9630   17.2     7.0    246    19.6     9.7    202 
 Deer Park                9700   32.5    15.1    215    37.6    19.3    195 
 Hobbs Park              10100   29.2    13.8    212    27.4    13.0    211 
 Kirwin                   9550   23.1     9.5    243    25.0    11.2    223 
 Little Warm              9370   18.5    10.2    181    24.1    12.5    193 
 Owl Creek                8975   10.3     5.7    181    12.4     5.9    210 
 South Pass               9040   31.2    15.1    207    28.4    17.0    167 
 St. Lawrence Alt         8620   10.5     6.8    154    17.0     8.7    195 
 Togwotee Pass            9580   33.0    21.8    151    37.7    23.7    159 
 Townsend Creek           8700   18.5     9.3    199    22.6    11.7    193 
                                                -----                  -----
                Basin Index (%)                  196                    190 
 

BIGHORN BASIN

 Bald Mtn.                9380   19.4    18.9    103    16.6    16.5    101 
 Bear Trap Meadow         8200    5.2     5.1    102     8.5     8.2    104 
 Bone Springs Div         9350   19.9    16.4    121    17.7    15.1    117 
 Grave Springs            8550    7.0     9.1     77     7.6    10.2     75 
 Kirwin                   9550   23.1     9.5    243    25.0    11.2    223 
 Marquette                8760   14.0      -M       *   17.5      -M       *
 Middle Powder            7760    7.4    11.7     63     7.2    11.3     64 
 Owl Creek                8975   10.3     5.7    181    12.4     5.9    210 
 Powder River Pass        9480    9.1    10.1     90    13.0    12.2    107 
 Shell Creek              9580   17.3    14.8    117    14.2    13.4    106 
 Timber Creek             7950    8.4     4.9    171    11.6     7.2    161 
                                                -----                  -----
                Basin Index (%)                  120                    120 
 

SHOSHONE RIVER

 Blackwater               9780   37.6    22.3    169    41.7    20.0    208 
 Evening Star             9200   37.9    23.8    159    44.3    26.5    167 
 Marquette                8760   14.0      -M       *   17.5      -M       *
 Sylvan Road              7120    8.6    11.0     78    30.4    16.3    187 
 Younts Peak              8350   25.3    14.2    178    30.6    15.4    199 
                                                -----                  -----
                Basin Index (%)                  153                    188 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.2     5.1    102     8.5     8.2    104 
 Cloud Peak Reservoir     9860   16.4    14.4    114    17.9    12.9    139 
 Grave Springs            8550    7.0     9.1     77     7.6    10.2     75 
 Hansen Sawmill           8360   11.6     6.2    187    14.1     8.3    170 
 Middle Powder            7760    7.4    11.7     63     7.2    11.3     64 
 Powder River Pass        9480    9.1    10.1     90    13.0    12.2    107 
 Soldier Park             8720   15.3      -M       *   14.0      -M       *
                                                -----                  -----
                Basin Index (%)                  100                    108 
 

TONGUE RIVER

 Big Goose                7990   12.2     9.3    131    13.9    11.1    125 
 Bone Springs Div         9350   19.9    16.4    121    17.7    15.1    117 
 Burgess Junction         7880   10.8    11.6     93    11.7    12.0     98 
 Dome Lake                8880   16.6    11.6    143    16.6    13.2    126 
 Little Goose             8870   14.0      -M       *   17.2      -M       *
 Sucker Creek             8880   13.7    11.8    116    13.8    14.0     99 
 Tie Creek                6870    4.6     5.5     84    13.8    11.3    122 
                                                -----                  -----
                Basin Index (%)                  118                    114 
 

BELLE FOURCHE

 Cole Canyon              5910     .1     5.6      2     7.0     9.1     77 
                                                -----                  -----
                Basin Index (%)                    2                     77 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .3     7.1      4     9.0    11.5     78 
 North Rapid Creek        6130     .4     6.7      6     7.5     9.5     79 
                                                -----                  -----
                Basin Index (%)                    5                     79 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.6    20.4    121    25.2    21.8    116 
 Blackhall Mtn            9820   35.5      -M       *   36.7      -M       *
 Columbine                9160   18.6    23.3     80    26.8    25.0    107 
 Divide Peak              8880   15.5    19.7     79    21.9    21.0    104 
 Joe Wright              10120   17.7    20.6     86    27.5    25.2    109 
 Laprele Creek            8375   11.0     9.4    117    12.1    12.2     99 
 Med Bow                 10500   37.7      -M       *   34.4      -M       *
 North French Creek      10130   24.1    28.7     84    26.8    26.1    103 
 Never Summer            10280   21.2    20.0    106    18.4      -M       *
 Old Battle              10000   35.8    30.7    117    37.5    34.2    110 
 Rawah                    9020    9.3    10.4     89    16.4    13.8    119 
 Sage Creek Basin         7850    6.7    12.5     54    16.1    14.2    113 
 Sand Lake               10050   30.0    28.3    106    26.8    24.2    111 
 South Brush Creek        8440    4.8    12.1     40    11.9    14.9     80 
 Tower                   10500   39.3    45.1     87    42.7    38.9    110 
 Webber Springs           9250   25.6    23.0    111    32.7    26.1    125 
 Willow Creek Pass        9540   17.2    12.0    143    17.9    13.1    137 
 Zirkel                   9340   31.9    26.3    121    41.2    27.8    148 
                                                -----                  -----
                Basin Index (%)                   97                    113 
 

SWEETWATER

 Deer Park                9700   32.5    15.1    215    37.6    19.3    195 
 Larsen Creek             9000   17.3    11.9    145    22.9      -M       *
 South Pass               9040   31.2    15.1    207    28.4    17.0    167 
                                                -----                  -----
                Basin Index (%)                  192                    182 
 

LOWER N. PLATTE

 Casper Mtn.              7900   11.1    14.0     79    12.4    14.4     86 
 Laprele Creek            8375   11.0     9.4    117    12.1    12.2     99 
 Reno Hill                8400   12.5    13.7     91    13.6    14.9     91 
 Windy Peak               7900    8.6     7.8    110    11.3    10.2    111 
                                                -----                  -----
                Basin Index (%)                   96                     96 
 

LARAMIE RIVER

 Brooklyn Lake           10240   22.7    21.0    108    22.6    20.6    110 
 Cinnabar Park            9574   17.9    20.6     87    21.9    23.6     93 
 Crow Creek               8330     .2     7.0      3     9.2    10.5     88 
 Deadman Hill            10220   20.3    15.9    128    19.8    16.9    117 
 Rawah                    9020    9.3    10.4     89    16.4    13.8    119 
 Roach                    9700   16.3    16.1    101    20.4    18.8    109 
                                                -----                  -----
                Basin Index (%)                   95                    106 
 

S. PLATTE

 Black Mountain           8920   10.7      -M       *   12.5      -M       *
 Crow Creek               8330     .2     7.0      3     9.2    10.5     88 
 Deadman Hill            10220   20.3    15.9    128    19.8    16.9    117 
                                                -----                  -----
                Basin Index (%)                   90                    106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     -M    10.2       *   16.5    14.7    112 
 Divide Peak              8880   15.5    19.7     79    21.9    21.0    104 
 Elk River                8700   13.4    19.1     70    19.9    19.6    102 
 Little Snake River       8915   26.9    24.2    111    38.0    29.1    131 
 Old Battle              10000   35.8    30.7    117    37.5    34.2    110 
 Sage Creek Basin         7850    6.7    12.5     54    16.1    14.2    113 
 Sandstone RS             8150    7.0    12.9     54    15.8    18.0     88 
 Whiskey Park             8950   25.4    26.8     95    29.5    27.3    108 
                                                -----                  -----
                Basin Index (%)                   90                    110 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.7    12.4    167    23.0    12.9    178 
 Blind Bull Sum           8650   42.2    23.0    183      -M    19.1       *
 East Rim Divide          7930   16.1    10.2    158    20.6    11.5    179 
 Elkhart Park G.S.        9400   18.8    12.2    154    23.9    13.0    184 
 Gros Ventre Summit       8750     -M    13.0       *     -M    12.6       *
 Gunsight Pass            9820   22.5    13.6    165    24.3    13.4    181 
 Kendall R.S.             7740   20.5    11.5    178    28.7    13.9    206 
 Loomis Park              8240   26.5    14.0    189    31.8    16.9    188 
 New Fork Lake            8340   15.9    10.3    154    17.5    10.5    167 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.4    12.3    150    26.9    13.9    194 
 Spring Creek Divide      9000   39.8    22.5    177    39.4    23.3    169 
 Triple Peak              8500   35.3    21.9    161    40.1    24.8    162 
                                                -----                  -----
                Basin Index (%)                  169                    179 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    9.6      -M       *   16.0      -M       *
 Buck Pasture             9632   17.9      -M       *   23.7      -M       *
 EF Blacks Fork GS        9360   15.5      -M       *   17.3      -M       *
 Hams Fork                7840   14.5    10.9    133    21.1    11.1    190 
 Hewinta                  9500    9.4    11.0     85    17.3    13.7    126 
 Hickerson Park           9122    9.9     7.7    129    13.1    10.0    131 
 Hole-in-Rock             9168    7.9     6.9    114    13.6     9.4    145 
 Indian Creek             9425   39.4    24.3    162      -M    22.1       *
 Kelley R.S.              8180   25.1    15.0    167    30.0    17.7    169 
 Spirit Lk               10235   16.7      -M       *   18.8      -M       *
 Steel Creek Park        10158   19.1    15.6    122    21.2    16.1    132 
                                                -----                  -----
                Basin Index (%)                  137                    149 
 

UPPER BEAR RIVER

 Bear River RS            8777   10.2      -M       *   18.5      -M       *
 Bug Lake                 7987   31.8    18.2    175    33.6    19.0    177 
 Burts Miller Ranch       8000    3.5      -M       *   10.0      -M       *
 Chalk Creek #1           9171   33.5    23.9    140    36.1    24.7    146 
 Hayden Fork              9130   21.2    15.3    139    29.7    20.6    144 
 Kelley R.S.              8180   25.1    15.0    167    30.0    17.7    169 
 Lily Lake                9133   14.2    12.4    115    20.0    16.7    120 
 Monte Cristo             8932   35.9    27.2    132    38.7    25.4    152 
 Salt River Summit        7760   19.3    13.0    148    28.2    16.3    173 
                                                -----                  -----
                Basin Index (%)                  145                    154 

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


 -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.