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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 THURSDAY: APRIL 12 , 2012
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    14.5    17.3    84     24.6    22.7   108
 BLACK BEAR               8170    40.2    40.8    99     43.9    42.8   103
 BLIND BULL SUM           8650    23.5    28.9    81     17.5    23.6    74
 COTTONWOOD CREEK         7670    15.7    24.1    65     24.9    29.3    85
 EAST RIM DIVIDE          7930     4.9    13.9    35     11.7    12.8    91
 GRAND TARGHEE            9260    37.4      -M      *    31.0      -M      *
 GRANITE CREEK            6770      -M    17.5      *      -M    20.9      *
 GRASSY LAKE              7265    31.9    37.1    86     39.5    38.1   104
 GROS VENTRE SUMMIT       8750     7.6    14.6    52     10.9    13.8    79
 GUNSIGHT PASS            9820    11.0      -M      *    14.8      -M      *
 LEWIS LAKE DIVIDE        7850    31.9    36.7    87     36.1    38.9    93
 PHILLIPS BENCH           8200    23.5    30.4    77     26.2    30.8    85
 SALT RIVER SUMMIT        7760     6.7    14.7    46     11.4    20.0    57
 SNAKE RIVER STATION      6920    12.6    18.1    70     25.5    23.7   108
 SPRING CREEK DIVIDE      9000    22.5    28.3    80     22.8    28.1    81
 THUMB DIVIDE             7980    15.5    19.0    82     19.3    20.2    96
 TOGWOTEE PASS            9580    21.5    26.4    81     24.6    26.4    93
 TWO OCEAN PLATEAU        9240    34.5    30.2   114     28.8    29.5    98
 WILLOW CREEK             8380    20.6    31.7    65     32.6    34.4    95
 YOUNTS PEAK              8350    15.8    18.0    88     16.2    17.2    94
                                                -----                  -----
                Basin wide percent of average     80                     92


MADISON-GALLATIN

 BLACK BEAR               8170    40.2    40.8    99     43.9    42.8   103
 CANYON                   7870    12.1    14.1    86     16.3    16.4    99
 MADISON PLATEAU          7750    27.3    26.1   105     33.1    28.5   116
 WEST YELLOWSTONE         6700     8.1    11.9    68     18.5    13.7   135
 WHISKEY CREEK            6800    16.8    17.8    94     25.0    22.4   112
                                                -----                  -----
                Basin wide percent of average     94                    111


YELLOWSTONE

 BEARTOOTH LAKE           9360    25.7    25.2   102     25.4    21.5   118
 BURNT MTN                5880      .0     6.1     0     12.4    17.0    73
 CANYON                   7870    12.1    14.1    86     16.3    16.4    99
 COLE CREEK               7850    14.3    18.0    79     12.3    18.5    66
 EVENING STAR             9200    30.0    31.7    95     33.4    27.1   123
 FISHER CREEK             9100    38.0    36.8   103     36.8    38.7    95
 NORTHEAST ENTRANCE       7350     6.0    11.0    55     14.0    13.5   104
 PARKER PEAK              9400    25.5    23.2   110     24.2    17.5   138
 SYLVAN LAKE              8420    17.3    24.0    72     25.8    22.4   115
 THUMB DIVIDE             7980    15.5    19.0    82     19.3    20.2    96
 TWO OCEAN PLATEAU        9240    34.5    30.2   114     28.8    29.5    98
 WHITE MILL               8700    24.8    25.7    96     25.5    28.7    89
 WOLVERINE                7650     5.6    11.4    49     13.6    13.7    99
                                                -----                  -----
                Basin wide percent of average     90                    101


WIND RIVER

 BURROUGHS CREEK          8750    13.4    15.2    88     14.5    17.4    83
 CASTLE CREEK             8400     1.8      -M      *     8.8      -M      *
 COLD SPRINGS             9630      .9     7.8    12      9.7    11.8    82
 DEER PARK                9700     9.9    17.0    58     17.8    23.7    75
 HOBBS PARK              10100    13.1    16.6    79     13.7    14.3    96
 KIRWIN                   9550    11.5    12.2    94     14.5    12.2   119
 LITTLE WARM              9370     7.0    12.6    56     11.9    14.5    82
 OWL CREEK                8975      .0     5.4     0      5.8     6.6    88
 SOUTH PASS               9040    11.9    17.7    67     13.6    20.0    68
 ST. LAWRENCE ALT         8620      .0     7.5     0      7.7     9.9    78
 TOGWOTEE PASS            9580    21.5    26.4    81     24.6    26.4    93
 TOWNSEND CREEK           8700     4.5     9.7    46     11.5    13.0    88
                                                -----                  -----
                Basin wide percent of average     63                     86


BIGHORN BASIN

 BALD MTN.                9380    20.8    21.4    97     16.1    18.8    86
 BEAR TRAP MEADOW         8200     1.2     4.9    24      9.4     9.2   102
 BONE SPRINGS DIV         9350    19.7    17.4   113     16.6    15.9   104
 GRAVE SPRINGS            8550     6.1    10.5    58     10.9    11.0    99
 KIRWIN                   9550    11.5    12.2    94     14.5    12.2   119
 MARQUETTE                8760     7.1      -M      *    12.0    11.1   108
 MIDDLE POWDER            7760     9.4    13.6    69     11.4    13.5    84
 OWL CREEK                8975      .0     5.4     0      5.8     6.6    88
 POWDER RIVER PASS        9480     8.8    11.8    75     16.1    13.5   119
 SHELL CREEK              9580    18.2    15.9   114     16.6    14.5   114
 TIMBER CREEK             7950      .0     5.8     0      9.4     8.3   113
                                                -----                  -----
                Basin wide percent of average     80                    103


SHOSHONE RIVER

 BLACKWATER               9780    25.3    26.4    96     25.3    22.2   114
 EVENING STAR             9200    30.0    31.7    95     33.4    27.1   123
 MARQUETTE                8760     7.1      -M      *    12.0    11.1   108
 SYLVAN ROAD              7120     3.7    12.7    29     18.7    18.8    99
 YOUNTS PEAK              8350    15.8    18.0    88     16.2    17.2    94
                                                -----                  -----
                Basin wide percent of average     84                    110


POWDER RIVER

 BEAR TRAP MEADOW         8200     1.2     4.9    24      9.4     9.2   102
 CLOUD PEAK RESERVOIR     9860    12.6    14.9    85     15.6    14.3   109
 GRAVE SPRINGS            8550     6.1    10.5    58     10.9    11.0    99
 HANSEN SAWMILL           8360      .0     6.3     0      8.7     9.1    96
 MIDDLE POWDER            7760     9.4    13.6    69     11.4    13.5    84
 POWDER RIVER PASS        9480     8.8    11.8    75     16.1    13.5   119
 SOLDIER PARK             8720     4.8      -M      *    10.1      -M      *
                                                -----                  -----
                Basin wide percent of average     61                    102


TONGUE RIVER

 BIG GOOSE                7990     7.2    12.1    60     14.7    10.1   146
 BONE SPRINGS DIV         9350    19.7    17.4   113     16.6    15.9   104
 BURGESS JUNCTION         7880    11.8    12.9    91     14.7    13.3   111
 DOME LAKE                8880    12.1    13.7    88     15.5    14.4   108
 LITTLE GOOSE             8870     6.0      -M      *    16.7      -M      *
 SUCKER CREEK             8880    10.3    13.2    78     16.0    14.8   108
 TIE CREEK                6870      .0     5.5     0     13.9    11.1   125
                                                -----                  -----
                Basin wide percent of average     82                    115


BELLE FOURCHE

 COLE CANYON              5910      .0     7.2     0      8.2     7.4   111
                                                -----                  -----
                Basin wide percent of average      0                    111


CHEYENNE RIVER BASIN

 BLIND PARK               6890      .0     8.0     0     10.5    12.0    88
 NORTH RAPID CREEK        6130      .0     8.9     0      8.1     9.3    87
                                                -----                  -----
                Basin wide percent of average      0                     87


UPPER N. PLATTE

 ARAPAHO RIDGE           10960    12.6    24.4    52     16.6    28.4    58
 BLACKHALL MTN            9820    19.0      -M      *    23.3      -M      *
 COLUMBINE                9160      -M    24.9      *    19.7    26.8    74
 DIVIDE PEAK              8880      -M    20.8      *    19.0    22.1    86
 JOE WRIGHT              10120      -M    23.2      *    18.4    26.7    69
 LAPRELE CREEK            8375     1.0    10.6     9     11.8    13.9    85
 NORTH FRENCH CREEK      10130    14.9    32.0    47     19.4    26.4    73
 NEVER SUMMER            10280    10.4    22.0    47     11.1    25.4    44
 OLD BATTLE              10000    22.1    34.2    65     26.8    36.6    73
 RAWAH                    9020      .0    16.1     0     11.2    17.6    64
 SAGE CREEK BASIN         7850      -M    12.1      *    10.3    12.8    80
 SAND LAKE               10050    21.5    34.6    62     23.0    26.0    88
 SOUTH BRUSH CREEK        8440      -M    13.4      *    11.5    17.7    65
 TOWER                   10500    25.2    48.8    52     30.9    41.0    75
 WEBBER SPRINGS           9250      -M    26.2      *    21.1    28.5    74
 WILLOW CREEK PASS        9540      -M    13.3      *     9.3    13.9    67
 ZIRKEL                   9340      -M    25.6      *    24.4    27.6    88
                                                -----                  -----
                Basin wide percent of average     48*                    73


SWEETWATER

 DEER PARK                9700     9.9    17.0    58     17.8    23.7    75
 LARSEN CREEK             9000     5.4      -M      *    14.3      -M      *
 SOUTH PASS               9040    11.9    17.7    67     13.6    20.0    68
                                                -----                  -----
                Basin wide percent of average     63                     72


LOWER N. PLATTE

 CASPER MTN.              7900    14.3    16.3    88     18.2    16.2   112
 LAPRELE CREEK            8375     1.0    10.6     9     11.8    13.9    85
 RENO HILL                8400    12.0    15.7    76     18.0    16.8   107
 WINDY PEAK               7900      -M     8.3      *     8.8    11.5    77
                                                -----                  -----
                Basin wide percent of average     64                     97


LARAMIE RIVER

 BROOKLYN LAKE           10240    12.6    25.9    49     18.7    23.9    78
 CINNABAR PARK            9574     9.3    17.8    52     19.3    21.2    91
 CROW CREEK               8330      .1     9.4     1     10.2    10.8    94
 DEADMAN HILL            10220    15.7    17.9    88     15.8    18.3    86
 RAWAH                    9020      .0    16.1     0     11.2    17.6    64
 ROACH                    9700     9.8    18.3    54     16.5    20.0    82
                                                -----                  -----
                Basin wide percent of average     45                     82


S. PLATTE

 BLACK MOUNTAIN           8920     6.8      -M      *    12.7      -M      *
 CROW CREEK               8330      .1     9.4     1     10.2    10.8    94
 DEADMAN HILL            10220    15.7    17.9    88     15.8    18.3    86
                                                -----                  -----
                Basin wide percent of average     58                     89


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      -M     9.3      *    11.8    16.9    70
 DIVIDE PEAK              8880      -M    20.8      *    19.0    22.1    86
 ELK RIVER                8700      -M    20.0      *    15.4    20.9    74
 LITTLE SNAKE RIVER       8915     8.2      -M      *    24.1      -M      *
 OLD BATTLE              10000    22.1    34.2    65     26.8    36.6    73
 SAGE CREEK BASIN         7850      -M    12.1      *    10.3    12.8    80
 SANDSTONE RS             8150      -M    13.8      *    11.9    19.9    60
 WHISKEY PARK             8950      -M    30.7      *    23.9    30.5    78
                                                -----                  -----
                Basin wide percent of average     65*                    75


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    12.5    15.3    82     14.0    14.3    98
 BLIND BULL SUM           8650    23.5    28.9    81     17.5    23.6    74
 EAST RIM DIVIDE          7930     4.9    13.9    35     11.7    12.8    91
 ELKHART PARK G.S.        9400    13.3    14.0    95     15.4    14.3   108
 GROS VENTRE SUMMIT       8750     7.6    14.6    52     10.9    13.8    79
 GUNSIGHT PASS            9820    11.0      -M      *    14.8      -M      *
 KENDALL R.S.             7740     9.2    13.9    66     14.8    15.4    96
 LOOMIS PARK              8240     9.0    17.3    52     16.7    18.4    91
 NEW FORK LAKE            8340     6.9    11.5    60     10.8    12.1    89
 POCKET CREEK             9360     9.7      -M      *    12.6      -M      *
 SNIDER BASIN             8060     9.2    15.0    61     13.2    17.2    77
 SPRING CREEK DIVIDE      9000    22.5    28.3    80     22.8    28.1    81
 TRIPLE PEAK              8500    15.7    25.9    61     25.2    26.4    95
                                                -----                  -----
                Basin wide percent of average     68                     88


LOWER GREEN RIVER

 BLACKS FORK JCT          8870      .0      -M      *    11.5      -M      *
 BUCK PASTURE             9700      .1      -M      *     4.4      -M      *
 EF BLACKS FORK GS        9308      .9      -M      *     9.7      -M      *
 HAMS FORK                7840     3.0    10.5    29     10.1    13.1    77
 HEWINTA                  9519     3.6    12.5    29     13.3    15.9    84
 HICKERSON PARK           9145      .0     8.4     0     12.5     8.7   144
 HOLE-IN-ROCK             9150     2.3     7.4    31     12.7     8.3   153
 INDIAN CREEK             9425    17.1    29.5    58     18.4    27.2    68
 KELLEY R.S.              8180    10.8    17.4    62     15.5    21.7    71
 SPIRIT LK               10223     6.5      -M      *    18.1      -M      *
 STEEL CREEK PARK        10200    11.3    17.0    66     15.1    17.9    84
                                                -----                  -----
                Basin wide percent of average     47                     87


UPPER BEAR RIVER

 BEAR RIVER RS            8500      .0      -M      *    10.7      -M      *
 BUG LAKE                 7950    12.5    21.8    57     16.0    20.5    78
 BURTS MILLER RANCH       8000      .4      -M      *     9.5      -M      *
 CHALK CREEK #1           8993    12.7    25.7    49     19.7    27.2    72
 HAYDEN FORK              9212     3.0    16.8    18     18.5    22.7    81
 KELLEY R.S.              8180    10.8    17.4    62     15.5    21.7    71
 LILY LAKE                9156     4.6    14.6    32     12.9    19.0    68
 MONTE CRISTO             8960    14.1    30.6    46     19.4    27.3    71
 SALT RIVER SUMMIT        7760     6.7    14.7    46     11.4    20.0    57
                                                -----                  -----
                Basin wide percent of average     45                     72

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


 -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.