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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 MONDAY: MAY 7 , 2007
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030      .0     9.8     0     21.4    24.9    86
 COTTONWOOD CREEK         7600    10.3    17.3    60     25.5    32.7    78
 GRANITE CREEK            6770      .0    10.7     0     17.3    22.9    76
 GRASSY LAKE              7265    15.9    30.4    52     36.7    41.7    88
 GROS VENTRE SUMMIT       8750     6.9    11.8    58     14.0    15.8    89
 LEWIS LAKE DIVIDE        7850    16.0    32.2    50     32.6    42.3    77
 PHILLIPS BENCH           8200    12.2    27.1    45     25.0    33.8    74
 SALT RIVER SUMMIT        7600      .2     8.2     2     16.2    22.1    73
 SNAKE RIVER STATION      6920      .0     9.4     0     23.6    26.1    90
 SPRING CREEK DIVIDE      9000    19.7    26.9    73     22.9    30.8    74
 THUMB DIVIDE             7980      .0    12.7     0     17.4    22.5    77
 TOGWOTEE PASS            9580    18.1    27.7    65     23.4    29.7    79
 TWO OCEAN PLATEAU        9240    25.3    31.3    81     25.7    32.9    78
 WILLOW CREEK             8450    15.4    28.3    54     34.4    38.6    89
                                                -----                  -----
                Basin wide percent of average     49                     81


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    20.6    25.7    80     22.1    24.2    91
 BLACK BEAR               8170    27.1    38.4    71     37.7    46.7    81
 CANYON                   8090     4.4     9.5    46     17.5    18.2    96
 FISHER CREEK             9100    30.2    37.3    81     33.8    42.8    79
 MADISON PLATEAU          7750    12.8    22.2    58     24.5    31.2    79
 NORTHEAST ENTRANCE       7350      -M     5.5      *      -M    15.3      *
 PARKER PEAK              9400    17.5    24.3    72     21.2    20.2   105
 SYLVAN LAKE              8420     9.4    22.3    42     24.8    25.5    97
 THUMB DIVIDE             7980      .0    12.7     0     17.4    22.5    77
 TWO OCEAN PLATEAU        9240    25.3    31.3    81     25.7    32.9    78
 WHISKEY CREEK            6800     4.5    12.9    35     19.0    24.8    77
 WHITE MILL               8700    19.2    25.7    75     22.7    32.0    71
 WOLVERINE                7650      .0     5.5     0     13.0    15.8    82
                                                -----                  -----
                Basin wide percent of average     64                     83


WIND RIVER

 BURROUGHS CREEK          8750     9.6    12.2    79     15.1    19.9    76
 COLD SPRINGS             9630     2.4     4.2    57     12.8    14.5    88
 DEER PARK                9700    11.4    18.0    63     21.0    27.8    76
 HOBBS PARK              10100    15.7    17.4    90     19.0    17.7   107
 LITTLE WARM              9370     4.6     9.7    47     14.0    17.4    80
 SOUTH PASS               9040     8.6    16.3    53     18.1    23.3    78
 ST. LAWRENCE ALT         8620     3.1     5.1    61     12.9    12.7   102
 TOGWOTEE PASS            9580    18.1    27.7    65     23.4    29.7    79
 TOWNSEND CREEK           8700     3.6     7.6    47     15.7    16.1    98
                                                -----                  -----
                Basin wide percent of average     65                     85


BIGHORN BASIN

 BALD MTN.                9380    23.9    23.3   103     19.8    22.1    90
 BEAR TRAP MEADOW         8200     1.6     1.7    94     13.0    11.5   113
 BLACKWATER               9780    21.7    28.8    75     23.3    25.5    91
 BONE SPRINGS DIV         9350    20.6    17.4   118     23.1    19.1   121
 EVENING STAR             9200    19.8    33.0    60     30.3    30.8    98
 GRAVE SPRINGS            8550     5.8     9.7    60     11.9    13.7    87
 KIRWIN                   9550    11.9    12.1    98     16.9    14.8   114
 MARQUETTE                8760     3.2    10.3    31     15.6    14.5   108
 MIDDLE POWDER            7760    11.7    12.9    91     12.7    16.4    77
 OWL CREEK                8975      .9     3.3    27      9.2     8.8   105
 POWDER RIVER PASS        9480     6.7     9.6    70     15.7    16.5    95
 SHELL CREEK              9580    17.6    16.6   106     17.3    17.5    99
 SYLVAN LAKE              8420     9.4    22.3    42     24.8    25.5    97
 SYLVAN ROAD              7120      .0     5.8     0     17.8    21.0    85
 TIMBER CREEK             7950     1.5     3.7    41     12.1    11.3   107
 YOUNTS PEAK              8350     8.8    16.9    52     15.7    19.4    81
                                                -----                  -----
                Basin wide percent of average     73                     97


SHOSHONE RIVER

 BLACKWATER               9780    21.7    28.8    75     23.3    25.5    91
 EVENING STAR             9200    19.8    33.0    60     30.3    30.8    98
 KIRWIN                   9550    11.9    12.1    98     16.9    14.8   114
 MARQUETTE                8760     3.2    10.3    31     15.6    14.5   108
 SYLVAN LAKE              8420     9.4    22.3    42     24.8    25.5    97
 SYLVAN ROAD              7120      .0     5.8     0     17.8    21.0    85
 YOUNTS PEAK              8350     8.8    16.9    52     15.7    19.4    81
                                                -----                  -----
                Basin wide percent of average     58                     95


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     1.6     1.7    94     13.0    11.5   113
 BIG GOOSE                7990    10.7    10.5   102     18.8    13.6   138
 BONE SPRINGS DIV         9350    20.6    17.4   118     23.1    19.1   121
 BURGESS JUNCTION         7880    14.0    12.0   117     19.2    16.0   120
 CLOUD PEAK RESERVOIR     9860    16.6    15.6   106     19.9    18.0   111
 DOME LAKE                8880    13.2    12.2   108     22.0    17.5   126
 GRAVE SPRINGS            8550     5.8     9.7    60     11.9    13.7    87
 HANSEN SAWMILL           8360     1.5     3.7    41     13.1    11.6   113
 MIDDLE POWDER            7760    11.7    12.9    91     12.7    16.4    77
 POWDER RIVER PASS        9480     6.7     9.6    70     15.7    16.5    95
 SUCKER CREEK             8880    14.9    11.9   125       -M    18.2      *
 TIE CREEK                6870      -M     2.8      *    16.8    14.2   118
                                                -----                  -----
                Basin wide percent of average    100                    111


BELLE FOURCHE

 BLIND PARK               6890      .0     2.3     0     12.8    14.9    86
 COLE CANYON              5910      .2     4.3     5     13.4      -M      *
 NORTH RAPID CREEK        6130      .0     2.4     0     12.0    11.9   101
                                                -----                  -----
                Basin wide percent of average      2                     93


UPPER N. PLATTE RIVER

 COLUMBINE                9160      .0    17.6     0     24.2    29.8    81
 DIVIDE PEAK              8860     9.5    16.5    58     23.0    24.9    92
 ELK RIVER                8700      .8    11.8     7     20.9    23.6    89
 JOE WRIGHT              10120    22.5    24.5    92     27.4    31.0    88
 NORTH FRENCH CREEK      10130    24.7    33.9    73     28.7    30.6    94
 OLD BATTLE               9920    26.3    36.3    72     32.5    40.7    80
 SAGE CREEK BASIN         7850      .2     9.6     2     15.0    14.4   104
 SOUTH BRUSH CREEK        8440      .7     9.1     8     17.0    20.8    82
 TOWER                   10500    28.6    51.9    55     37.0    46.0    80
 WEBBER SPRINGS           9250    11.4    22.1    52     26.9    31.8    85
 WILLOW CREEK PASS        9540    15.6    12.9   121     16.1    16.3    99
                                                -----                  -----
                Basin wide percent of average     57                     87


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10220    19.3    26.0    74     24.4    27.8    88
 CASPER MTN.              7850     8.0    14.8    54     17.6    20.4    86
 DEADMAN HILL            10220    16.6    19.0    87     22.3    21.7   103
 DEER PARK                9700    11.4    18.0    63     21.0    27.8    76
 LAPRELE CREEK            8375     1.9     5.6    34     16.0    17.2    93
 RENO HILL                8500    11.1    12.6    88     22.1    21.1   105
 ROACH                    9700    17.5    16.3   107     24.0    23.2   103
 SAND LAKE               10050    28.3    36.4    78     30.6    30.3   101
 SOUTH PASS               9040     8.6    16.3    53     18.1    23.3    78
 WINDY PEAK               7900     2.0     3.5    57     15.5    14.2   109
                                                -----                  -----
                Basin wide percent of average     74                     93


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0     2.9     0     15.6    19.0    82
 DIVIDE PEAK              8860     9.5    16.5    58     23.0    24.9    92
 OLD BATTLE               9920    26.3    36.3    72     32.5    40.7    80
 SANDSTONE RS             8150      .9     7.1    13     18.0    22.5    80
 WHISKEY PARK             8950    15.6    28.8    54     27.4    34.6    79
                                                -----                  -----
                Basin wide percent of average     57                     82


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     4.4    11.6    38     13.1    16.4    80
 BLIND BULL SUM           8900    22.6    26.6    85     19.3    25.8    75
 EAST RIM DIVIDE          7930      .0    11.4     0     10.6    14.3    74
 ELKHART PARK G.S.        9400     7.3    11.3    65     13.9    16.6    84
 GROS VENTRE SUMMIT       8750     6.9    11.8    58     14.0    15.8    89
 KENDALL R.S.             7740      .1     7.3     1     13.9    17.0    82
 LOOMIS PARK              8240      .1    12.3     1     15.9    20.4    78
 NEW FORK LAKE            8340      .0     6.4     0     10.7    13.9    77
 SNIDER BASIN             8060     3.5    10.5    33     13.7    18.9    72
 SPRING CREEK DIVIDE      9000    19.7    26.9    73     22.9    30.8    74
 TRIPLE PEAK              8500    12.6    20.9    60     26.5    29.2    91
                                                -----                  -----
                Basin wide percent of average     49                     80


LOWER GREEN RIVER

 HAMS FORK                7840      .1     3.9     3     12.0    15.1    79
 HEWINTA                  9500      .1     7.2     1     15.7    18.3    86
 HICKERSON PARK           9100     1.9     4.2    45     14.2    10.7   133
 HOLE-IN-ROCK             9150      .9     3.4    26     12.6    10.2   124
 INDIAN CREEK             9425    14.7    26.3    56     20.5    30.1    68
 KELLEY R.S.              8180     5.6    12.0    47     18.0    24.1    75
 STEEL CREEK PARK        10100    14.1    18.4    77     17.0    20.8    82
                                                -----                  -----
                Basin wide percent of average     50                     85


UPPER BEAR RIVER

 BUG LAKE                 7950     6.6    15.0    44     17.8    22.9    78
 HAYDEN FORK              9100      .5    10.6     5     22.8    25.8    88
 KELLEY R.S.              8180     5.6    12.0    47     18.0    24.1    75
 LILY LAKE                9050     1.8     9.0    20     18.0    21.7    83
 MONTE CRISTO             8960    11.8    25.9    46     25.0    31.0    81
 SALT RIVER SUMMIT        7600      .2     8.2     2     16.2    22.1    73
 TRIAL LAKE               9960    10.4    25.1    41     23.1    30.2    76
                                                -----                  -----
                Basin wide percent of average     35                     79

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


 -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.