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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 TUESDAY: MAY 4 , 2010
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     4.4    11.5    38     15.6    24.5    64
 COTTONWOOD CREEK         7670    15.5    19.0    82     26.1    32.2    81
 GRAND TARGHEE            9260    44.0      -M      *    34.2      -M      *
 GRANITE CREEK            6770     5.1    12.2    42     14.6    22.6    65
 GRASSY LAKE              7265    20.6    32.6    63     30.5    41.2    74
 GROS VENTRE SUMMIT       8750     8.5    12.9    66     10.9    15.4    71
 GUNSIGHT PASS            9820    10.3      -M      *    13.4      -M      *
 LEWIS LAKE DIVIDE        7850    18.6    34.0    55     25.9    41.9    62
 PHILLIPS BENCH           8200    18.3    28.9    63     23.9    33.4    72
 SALT RIVER SUMMIT        7760     7.3     9.9    74     14.8    21.8    68
 SNAKE RIVER STATION      6920     2.2    11.4    19     19.3    25.7    75
 SPRING CREEK DIVIDE      9000    20.9    28.3    74     21.2    30.4    70
 THUMB DIVIDE             7980     7.8    14.3    55     16.3    22.2    73
 TOGWOTEE PASS            9580    21.7    28.0    78       -M    29.2      *
 TWO OCEAN PLATEAU        9240    25.9    31.8    81     21.8    32.4    67
 WILLOW CREEK             8380    21.2    30.1    70     33.1    38.0    87
                                                -----                  -----
                Basin wide percent of average     65                     72


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    17.3    26.0    67     16.8    23.8    71
 BLACK BEAR               8170    28.0    39.5    71     30.9    46.2    67
 CANYON                   7870     7.6    10.7    71     13.8    17.9    77
 FISHER CREEK             9100    26.2    37.7    69     28.0    42.2    66
 MADISON PLATEAU          7750    17.0    23.7    72     24.3    30.6    79
 NORTHEAST ENTRANCE       7350      .3     6.3     5     10.7    15.0    71
 PARKER PEAK              9400    20.5    24.6    83     15.9    19.7    81
 SYLVAN LAKE              8420    13.3    23.4    57     21.2    25.0    85
 THUMB DIVIDE             7980     7.8    14.3    55     16.3    22.2    73
 TWO OCEAN PLATEAU        9240    25.9    31.8    81     21.8    32.4    67
 WHISKEY CREEK            6800     9.5    14.5    66     15.5    24.4    64
 WHITE MILL               8700    18.5    26.3    70     19.2    31.5    61
 WOLVERINE                7650      .2     6.6     3      8.9    15.4    58
                                                -----                  -----
                Basin wide percent of average     67                     70


WIND RIVER

 BURROUGHS CREEK          8750    10.0    13.2    76     10.6    19.5    54
 COLD SPRINGS             9630     5.9     4.7   126     13.0    14.1    92
 DEER PARK                9700    18.1    18.1   100     23.1    27.2    85
 HOBBS PARK              10100    20.0    18.0   111     21.0    17.2   122
 LITTLE WARM              9370     8.2    10.5    78     11.6    17.0    68
 SOUTH PASS               9040    15.3    17.7    86     20.6    23.0    90
 ST. LAWRENCE ALT         8620     5.5     5.8    95     14.1    12.3   115
 TOGWOTEE PASS            9580    21.7    28.0    78       -M    29.2      *
 TOWNSEND CREEK           8700    11.5     8.6   134     18.5    15.8   117
                                                -----                  -----
                Basin wide percent of average     93                     91


BIGHORN BASIN

 BALD MTN.                9380    16.5    23.5    70     13.6    21.6    63
 BEAR TRAP MEADOW         8200     3.9     2.1   186     10.2    11.1    92
 BLACKWATER               9780    20.8    29.0    72     19.7    25.0    79
 BONE SPRINGS DIV         9350    12.8    18.2    70     13.3    18.6    72
 EVENING STAR             9200    20.3    33.3    61     24.8    30.2    82
 GRAVE SPRINGS            8550     9.3    10.8    86     13.2    13.4    99
 KIRWIN                   9550    10.9    12.9    84     12.9    14.4    90
 MARQUETTE                8760     8.2    11.0    75     11.8    14.0    84
 MIDDLE POWDER            7760    11.3    14.0    81     11.1    16.0    69
 OWL CREEK                8975      .6     3.8    16      7.7     8.4    92
 POWDER RIVER PASS        9480     8.2    10.2    80     13.7    16.1    85
 SHELL CREEK              9580    14.5    16.7    87     13.8    17.1    81
 SYLVAN LAKE              8420    13.3    23.4    57     21.2    25.0    85
 SYLVAN ROAD              7120      .9     7.6    12     15.2    20.7    73
 TIMBER CREEK             7950     1.0     4.7    21      8.4    10.8    78
 YOUNTS PEAK              8350    11.6    18.1    64     12.0    19.0    63
                                                -----                  -----
                Basin wide percent of average     69                     79


SHOSHONE RIVER

 BLACKWATER               9780    20.8    29.0    72     19.7    25.0    79
 EVENING STAR             9200    20.3    33.3    61     24.8    30.2    82
 KIRWIN                   9550    10.9    12.9    84     12.9    14.4    90
 MARQUETTE                8760     8.2    11.0    75     11.8    14.0    84
 SYLVAN LAKE              8420    13.3    23.4    57     21.2    25.0    85
 SYLVAN ROAD              7120      .9     7.6    12     15.2    20.7    73
 YOUNTS PEAK              8350    11.6    18.1    64     12.0    19.0    63
                                                -----                  -----
                Basin wide percent of average     64                     79


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     3.9     2.1   186     10.2    11.1    92
 BIG GOOSE                7990     8.9    11.3    79     12.9    13.2    98
 BONE SPRINGS DIV         9350    12.8    18.2    70     13.3    18.6    72
 BURGESS JUNCTION         7880    12.2    13.0    94     13.8    15.6    88
 CLOUD PEAK RESERVOIR     9860    14.4    16.2    89     14.7    17.4    84
 DOME LAKE                8880     9.3    13.1    71     14.7    17.1    86
 GRAVE SPRINGS            8550     9.3    10.8    86     13.2    13.4    99
 HANSEN SAWMILL           8360     2.1     4.6    46      9.4    11.2    84
 MIDDLE POWDER            7760    11.3    14.0    81     11.1    16.0    69
 POWDER RIVER PASS        9480     8.2    10.2    80     13.7    16.1    85
 SUCKER CREEK             8880    13.4    12.7   106     17.4    17.7    98
 TIE CREEK                6870     1.2     3.8    32     12.8    13.8    93
                                                -----                  -----
                Basin wide percent of average     82                     87


BELLE FOURCHE

 BLIND PARK               6890     1.5     3.9    38     15.1    14.4   105
 COLE CANYON              5910     1.6     4.1    39     12.8     9.8   131
 NORTH RAPID CREEK        6130      .0     3.1     0     13.7    11.6   118
                                                -----                  -----
                Basin wide percent of average     28                    116


UPPER N. PLATTE RIVER

 COLUMBINE                9160    18.1    20.0    91     26.7    29.4    91
 DIVIDE PEAK              8880    21.0    18.6   113     27.8    24.5   113
 ELK RIVER                8700    14.9    14.0   106     23.9    23.3   103
 JOE WRIGHT              10120    22.8    25.1    91     27.1    30.4    89
 NORTH FRENCH CREEK      10130    40.7    34.5   118     40.5    30.0   135
 OLD BATTLE              10000    39.2    37.1   106     41.8    40.2   104
 SAGE CREEK BASIN         7850     9.7    10.8    90     15.2    14.2   107
 SOUTH BRUSH CREEK        8440    12.4    10.5   118     23.1    20.4   113
 TOWER                   10500    40.2    52.4    77     38.3    45.6    84
 WEBBER SPRINGS           9250    23.1    24.5    94     32.6    31.4   104
 WILLOW CREEK PASS        9540    12.5    14.0    89     15.3    15.9    96
                                                -----                  -----
                Basin wide percent of average     97                    102


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    24.0    28.0    86     26.5    27.3    97
 CASPER MTN.              7900    15.9    16.6    96     18.0    19.9    90
 DEADMAN HILL            10220      -M    19.7      *      -M    21.2      *
 DEER PARK                9700    18.1    18.1   100     23.1    27.2    85
 LAPRELE CREEK            8375     7.5     6.6   114     16.4    16.7    98
 RENO HILL                8400    17.7    14.2   125     23.3    20.6   113
 ROACH                    9700    20.7    18.1   114     26.2    22.7   115
 SAND LAKE               10050    36.6    37.0    99     36.9    29.7   124
 SOUTH PASS               9040    15.3    17.7    86     20.6    23.0    90
 WINDY PEAK               7900     8.2     4.5   182     15.5    13.8   112
                                                -----                  -----
                Basin wide percent of average    102                    103


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     2.4     4.0    60     17.8    18.8    95
 DIVIDE PEAK              8880    21.0    18.6   113     27.8    24.5   113
 OLD BATTLE              10000    39.2    37.1   106     41.8    40.2   104
 SANDSTONE RS             8150     8.7     8.7   100     20.5    22.1    93
 WHISKEY PARK             8950    26.7    30.3    88     35.7    34.2   104
                                                -----                  -----
                Basin wide percent of average     99                    103


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     8.4    13.0    65     11.8    16.1    73
 BLIND BULL SUM           8650    20.2    27.6    73     15.2    25.4    60
 EAST RIM DIVIDE          7930      .5    12.8     4      8.7    14.0    62
 ELKHART PARK G.S.        9400     7.4    12.5    59     10.7    16.2    66
 GROS VENTRE SUMMIT       8750     8.5    12.9    66     10.9    15.4    71
 GUNSIGHT PASS            9820    10.3      -M      *    13.4      -M      *
 KENDALL R.S.             7740      .5     9.2     5     10.1    16.7    60
 LOOMIS PARK              8240     5.0    13.8    36     12.5    20.1    62
 NEW FORK LAKE            8340     1.6     7.9    20      7.7    13.6    57
 POCKET CREEK             9360     7.9      -M      *    13.5      -M      *
 SNIDER BASIN             8060     6.8    12.1    56     13.3    18.7    71
 SPRING CREEK DIVIDE      9000    20.9    28.3    74     21.2    30.4    70
 TRIPLE PEAK              8500    15.7    23.1    68     23.9    28.9    83
                                                -----                  -----
                Basin wide percent of average     55                     68


LOWER GREEN RIVER

 HAMS FORK                7840     1.3     5.3    25     11.7    14.9    79
 HEWINTA                  9519     7.4     8.6    86     15.6    18.0    87
 HICKERSON PARK           9145     5.5     5.2   106     13.6    10.4   131
 HOLE-IN-ROCK             9150     2.9     4.3    67     12.6     9.9   127
 INDIAN CREEK             9425    19.1    27.9    68     19.8    29.7    67
 KELLEY R.S.              8180     9.0    13.5    67     16.3    23.8    68
 STEEL CREEK PARK        10200    18.6    18.8    99     19.5    20.5    95
                                                -----                  -----
                Basin wide percent of average     76                     86


UPPER BEAR RIVER

 BUG LAKE                 7950    11.5    17.2    67     17.3    22.6    77
 HAYDEN FORK              9212     7.9    12.3    64     21.8    25.4    86
 KELLEY R.S.              8180     9.0    13.5    67     16.3    23.8    68
 LILY LAKE                9156    11.0    10.5   105     17.9    21.3    84
 MONTE CRISTO             8960    17.0    27.7    61     21.8    30.6    71
 SALT RIVER SUMMIT        7760     7.3     9.9    74     14.8    21.8    68
 TRIAL LAKE               9992    20.3    26.3    77     19.3    29.7    65
                                                -----                  -----
                Basin wide percent of average     72                     74

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


 -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.