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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 FRIDAY: MAY 11 , 2012
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030      .0     8.3     0     26.7    25.2   106
 BLACK BEAR               8170    42.5    37.8   112     50.7    47.4   107
 BLIND BULL SUM           8650    22.6    26.0    87     19.4    26.2    74
 COTTONWOOD CREEK         7670     5.3    15.8    34     28.7    33.4    86
 EAST RIM DIVIDE          7930      .0    10.6     0     12.9    14.6    88
 GRAND TARGHEE            9260    37.4      -M      *    34.4      -M      *
 GRANITE CREEK            6770      .0     9.4     0     19.6    23.2    84
 GRASSY LAKE              7265    21.0    28.8    73     44.6    42.3   105
 GROS VENTRE SUMMIT       8750      .2    11.0     2     12.6    16.1    78
 GUNSIGHT PASS            9820    10.2      -M      *    17.5      -M      *
 LEWIS LAKE DIVIDE        7850    24.5    30.9    79     40.6    43.0    94
 PHILLIPS BENCH           8200    14.7    26.0    57     28.8    34.3    84
 SALT RIVER SUMMIT        7760      .0     6.7     0     11.7    22.5    52
 SNAKE RIVER STATION      6920      .0     7.7     0     27.9    26.5   105
 SPRING CREEK DIVIDE      9000    19.6    26.2    75     25.9    31.2    83
 THUMB DIVIDE             7980     4.4    11.3    39     22.5    23.0    98
 TOGWOTEE PASS            9580    21.3    27.9    76     27.9    30.3    92
 TWO OCEAN PLATEAU        9240    35.5    31.2   114     33.0    33.5    99
 WILLOW CREEK             8380    12.3    27.2    45     38.1    39.5    96
 YOUNTS PEAK              8350    10.3    16.6    62     18.4    19.8    93
                                                -----                  -----
                Basin wide percent of average     65                     92


MADISON-GALLATIN

 BLACK BEAR               8170    42.5    37.8   112     50.7    47.4   107
 CANYON                   7870     5.9     8.3    71     19.3    18.6   104
 MADISON PLATEAU          7750    22.0    21.2   104     37.7    31.6   119
 WEST YELLOWSTONE         6700      .0     2.0     0     21.2    16.1   132
 WHISKEY CREEK            6800     9.3    11.7    79     28.4    25.2   113
                                                -----                  -----
                Basin wide percent of average     98                    113


YELLOWSTONE

 BEARTOOTH LAKE           9360    27.3    25.9   105     29.5    24.7   119
 BURNT MTN                5880      .0      .4     0*    14.6    22.0    66
 CANYON                   7870     5.9     8.3    71     19.3    18.6   104
 COLE CREEK               7850     9.9    19.7    50     14.7    23.8    62
 EVENING STAR             9200    27.6    33.0    84     38.2    31.4   122
 FISHER CREEK             9100    39.8    37.5   106     43.1    43.5    99
 NORTHEAST ENTRANCE       7350      .0     4.7     0       -M    15.7      *
 PARKER PEAK              9400    23.0    24.3    95     28.0    20.7   135
 SYLVAN LAKE              8420    13.0    21.6    60     31.1    26.0   120
 THUMB DIVIDE             7980     4.4    11.3    39     22.5    23.0    98
 TWO OCEAN PLATEAU        9240    35.5    31.2   114     33.0    33.5    99
 WHITE MILL               8700    25.9    25.7   101     29.9    32.6    92
 WOLVERINE                7650      -M     4.5      *    15.0    16.2    93
                                                -----                  -----
                Basin wide percent of average     87                    101


WIND RIVER

 BURROUGHS CREEK          8750     7.8    11.2    70     16.0    20.4    78
 CASTLE CREEK             8400      .1      -M      *     9.5      -M      *
 COLD SPRINGS             9630      .0     4.1     0     10.2    15.1    68
 DEER PARK                9700     2.1    16.8    12     20.7    28.2    73
 HOBBS PARK              10100     4.5    17.4    26     15.7    18.4    85
 KIRWIN                   9550      .7    12.0     6     16.1    15.4   105
 LITTLE WARM              9370      .0     8.7     0     13.9    18.0    77
 OWL CREEK                8975      .0     3.0     0      6.0     9.2    65
 SOUTH PASS               9040      .5    15.5     3     15.1    24.1    63
 ST. LAWRENCE ALT         8620      .0     4.7     0      8.8    13.3    66
 TOGWOTEE PASS            9580    21.3    27.9    76     27.9    30.3    92
 TOWNSEND CREEK           8700      .0     6.8     0     12.6    16.8    75
                                                -----                  -----
                Basin wide percent of average     29                     78


BIGHORN BASIN

 BALD MTN.                9380    22.9    23.5    97     19.3    22.8    85
 BEAR TRAP MEADOW         8200      .0     1.3     0     12.4    12.0   103
 BONE SPRINGS DIV         9350    17.0    17.1    99     19.2    19.7    97
 GRAVE SPRINGS            8550      .0     9.4     0     13.7    14.3    96
 KIRWIN                   9550      .7    12.0     6     16.1    15.4   105
 MARQUETTE                8760      .0      -M      *    12.7    15.2    84
 MIDDLE POWDER            7760      .6    12.1     5     14.4    17.0    85
 OWL CREEK                8975      .0     3.0     0      6.0     9.2    65
 POWDER RIVER PASS        9480     4.2     9.0    47     20.4    17.1   119
 SHELL CREEK              9580    20.0    16.8   119     20.5    18.2   113
 TIMBER CREEK             7950      .1     3.0     3      9.7    11.9    82
                                                -----                  -----
                Basin wide percent of average     61                     95


SHOSHONE RIVER

 BLACKWATER               9780    24.1    28.7    84     28.8    26.1   110
 EVENING STAR             9200    27.6    33.0    84     38.2    31.4   122
 MARQUETTE                8760      .0      -M      *    12.7    15.2    84
 SYLVAN ROAD              7120      .1     4.1     2     22.3    21.5   104
 YOUNTS PEAK              8350    10.3    16.6    62     18.4    19.8    93
                                                -----                  -----
                Basin wide percent of average     75                    106


POWDER RIVER

 BEAR TRAP MEADOW         8200      .0     1.3     0     12.4    12.0   103
 CLOUD PEAK RESERVOIR     9860     7.5    15.5    48     18.9    18.8   101
 GRAVE SPRINGS            8550      .0     9.4     0     13.7    14.3    96
 HANSEN SAWMILL           8360      .0     3.2     0     11.1    12.0    92
 MIDDLE POWDER            7760      .6    12.1     5     14.4    17.0    85
 POWDER RIVER PASS        9480     4.2     9.0    47     20.4    17.1   119
 SOLDIER PARK             8720      .0      -M      *    12.3      -M      *
                                                -----                  -----
                Basin wide percent of average     24                    100


TONGUE RIVER

 BIG GOOSE                7990      .0     9.9     0     17.1    14.3   120
 BONE SPRINGS DIV         9350    17.0    17.1    99     19.2    19.7    97
 BURGESS JUNCTION         7880     4.7    11.4    41     16.9    16.6   102
 DOME LAKE                8880     5.5    11.4    48     19.7    18.2   108
 LITTLE GOOSE             8870      .1      -M      *    20.3      -M      *
 SUCKER CREEK             8880     4.6    11.2    41     19.0    19.0   100
 TIE CREEK                6870      .0     2.4     0     16.1    14.9   108
                                                -----                  -----
                Basin wide percent of average     50                    105


BELLE FOURCHE

 COLE CANYON              5910      .0     1.4     0     12.0    10.8   111
                                                -----                  -----
                Basin wide percent of average      0                    111


CHEYENNE RIVER BASIN

 BLIND PARK               6890      .0     1.3     0     14.1    15.4    92
 NORTH RAPID CREEK        6130      .0     1.1     0     11.2    12.4    90
                                                -----                  -----
                Basin wide percent of average      0                     91


UPPER N. PLATTE

 ARAPAHO RIDGE           10960     3.8    25.4    15     19.3    32.1    60
 BLACKHALL MTN            9820     7.7      -M      *    26.5      -M      *
 COLUMBINE                9160      .0    15.7     0     22.5    30.3    74
 DIVIDE PEAK              8880      .0    15.0     0     21.2    25.4    83
 JOE WRIGHT              10120      -M    24.6      *    22.1    31.8    69
 LAPRELE CREEK            8375      .0     4.6     0     13.3    17.8    75
 NORTH FRENCH CREEK      10130     9.0    34.0    26     23.5    31.4    75
 NEVER SUMMER            10280     5.7    23.4    24     13.2    30.2    44
 OLD BATTLE              10000    20.2    36.6    55     30.9    41.6    74
 RAWAH                    9020      .0    13.5     0     13.7    21.0    65
 SAGE CREEK BASIN         7850      -M     8.7      *    11.7    14.8    79
 SAND LAKE               10050    19.2    36.4    53     27.0    31.2    87
 SOUTH BRUSH CREEK        8440      .0     7.9     0     13.6    21.4    64
 TOWER                   10500    20.5    52.2    39     35.8    47.1    76
 WEBBER SPRINGS           9250      -M    20.6      *    24.5    32.5    75
 WILLOW CREEK PASS        9540      -M    12.6      *    10.9    16.7    65
 ZIRKEL                   9340      .0    16.2     0       -M    31.2      *
                                                -----                  -----
                Basin wide percent of average     28                     71


SWEETWATER

 DEER PARK                9700     2.1    16.8    12     20.7    28.2    73
 LARSEN CREEK             9000      .0      -M      *    16.1      -M      *
 SOUTH PASS               9040      .5    15.5     3     15.1    24.1    63
                                                -----                  -----
                Basin wide percent of average      8                     68


LOWER N. PLATTE

 CASPER MTN.              7900      .2    13.7     1     20.3    21.2    96
 LAPRELE CREEK            8375      .0     4.6     0     13.3    17.8    75
 RENO HILL                8400      .2    11.4     2     21.0    21.9    96
 WINDY PEAK               7900      .0     2.5     0     10.0    14.7    68
                                                -----                  -----
                Basin wide percent of average      1                     85


LARAMIE RIVER

 BROOKLYN LAKE           10240      -M    25.3      *    22.4    28.6    78
 CINNABAR PARK            9574      .1    13.0     1     22.1    24.9    89
 CROW CREEK               8330      .0     2.0     0     12.2    13.1    93
 DEADMAN HILL            10220     5.8    18.9    31     18.3    22.4    82
 RAWAH                    9020      .0    13.5     0     13.7    21.0    65
 ROACH                    9700      .2    15.3     1     19.1    23.9    80
                                                -----                  -----
                Basin wide percent of average     10                     81


S. PLATTE

 BLACK MOUNTAIN           8920      .0      -M      *    14.5      -M      *
 CROW CREEK               8330      .0     2.0     0     12.2    13.1    93
 DEADMAN HILL            10220     5.8    18.9    31     18.3    22.4    82
                                                -----                  -----
                Basin wide percent of average     28                     86


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0     1.7     0     13.3    19.5    68
 DIVIDE PEAK              8880      .0    15.0     0     21.2    25.4    83
 ELK RIVER                8700      .0     9.8     0     17.2    24.1    71
 LITTLE SNAKE RIVER       8915      .0      -M      *    26.5      -M      *
 OLD BATTLE              10000    20.2    36.6    55     30.9    41.6    74
 SAGE CREEK BASIN         7850      -M     8.7      *    11.7    14.8    79
 SANDSTONE RS             8150      .1     5.3     2     13.5    23.0    59
 WHISKEY PARK             8950      -M    28.3      *    27.1    35.5    76
                                                -----                  -----
                Basin wide percent of average     30                     73


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     1.3    10.5    12     15.9    16.9    94
 BLIND BULL SUM           8650    22.6    26.0    87     19.4    26.2    74
 EAST RIM DIVIDE          7930      .0    10.6     0     12.9    14.6    88
 ELKHART PARK G.S.        9400     7.7    10.6    73     17.2    17.0   101
 GROS VENTRE SUMMIT       8750      .2    11.0     2     12.6    16.1    78
 GUNSIGHT PASS            9820    10.2      -M      *    17.5      -M      *
 KENDALL R.S.             7740      .0     5.7     0     15.9    17.2    92
 LOOMIS PARK              8240      .1    11.2     1     18.3    20.8    88
 NEW FORK LAKE            8340      .0     5.3     0     12.8    14.2    90
 POCKET CREEK             9360     3.3      -M      *    14.2      -M      *
 SNIDER BASIN             8060      .0     9.3     0     14.8    19.2    77
 SPRING CREEK DIVIDE      9000    19.6    26.2    75     25.9    31.2    83
 TRIPLE PEAK              8500     4.3    19.4    22     28.8    29.9    96
                                                -----                  -----
                Basin wide percent of average     38                     87


LOWER GREEN RIVER

 BLACKS FORK JCT          8870      .0      -M      *    12.6      -M      *
 BUCK PASTURE             9700      .0      -M      *      .0      -M      *
 EF BLACKS FORK GS        9308      .0      -M      *    13.3      -M      *
 HAMS FORK                7840      .0     2.6     0     11.7    15.6    75
 HEWINTA                  9519      .0     5.9     0     14.9    18.7    80
 HICKERSON PARK           9145      .0     3.1     0     14.1    11.0   128
 HOLE-IN-ROCK             9150      .0     2.5     0     14.1    10.6   133
 INDIAN CREEK             9425    10.6    25.4    42     20.8    30.6    68
 KELLEY R.S.              8180      .3    10.7     3     18.1    24.5    74
 SPIRIT LK               10223      .0      -M      *    20.0      -M      *
 STEEL CREEK PARK        10200     3.6    18.7    19     17.0    21.3    80
                                                -----                  -----
                Basin wide percent of average     21                     84


UPPER BEAR RIVER

 BEAR RIVER RS            8500      .0      -M      *    12.2      -M      *
 BUG LAKE                 7950      .0    13.1     0     18.1    23.4    77
 BURTS MILLER RANCH       8000      .0      -M      *    11.4      -M      *
 CHALK CREEK #1           8993     2.4    22.6    11     22.7    31.4    72
 HAYDEN FORK              9212      .0     9.1     0     20.9    26.3    79
 KELLEY R.S.              8180      .3    10.7     3     18.1    24.5    74
 LILY LAKE                9156      .0     7.7     0     14.7    22.2    66
 MONTE CRISTO             8960     1.8    24.6     7     22.7    31.7    72
 SALT RIVER SUMMIT        7760      .0     6.7     0     11.7    22.5    52
                                                -----                  -----
                Basin wide percent of average      5                     71

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


 -M   = Missing data
  *   = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and

Total Precipitation values

If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.

Reference period for average conditions is 1971-2000.

Provisional data, subject to revision.