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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: APRIL 30 , 2010
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     4.0    13.0    31     15.0    24.2    62
 COTTONWOOD CREEK         7670    15.0    20.4    74     25.2    31.7    79
 GRAND TARGHEE            9260    43.2      -M      *    33.0      -M      *
 GRANITE CREEK            6770     5.0    13.5    37     14.0    22.2    63
 GRASSY LAKE              7265    19.5    34.1    57     29.3    40.6    72
 GROS VENTRE SUMMIT       8750     8.1    13.6    60     10.5    15.1    70
 GUNSIGHT PASS            9820     9.9      -M      *    13.0      -M      *
 LEWIS LAKE DIVIDE        7850    16.9    35.1    48     24.5    41.4    59
 PHILLIPS BENCH           8200    17.7    29.8    59     23.1    32.9    70
 SALT RIVER SUMMIT        7760     7.2    11.3    64     14.4    21.4    67
 SNAKE RIVER STATION      6920     1.8    13.0    14     18.6    25.3    74
 SPRING CREEK DIVIDE      9000    20.1    28.7    70     20.5    30.0    68
 THUMB DIVIDE             7980     6.9    15.6    44     15.5    21.8    71
 TOGWOTEE PASS            9580    20.5    27.8    74     20.6    28.7    72
 TWO OCEAN PLATEAU        9240    24.1    31.8    76     20.5    31.8    64
 WILLOW CREEK             8380    20.0    31.0    65     31.8    37.3    85
                                                -----                  -----
                Basin wide percent of average     59                     70


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    16.1    25.9    62     15.6    23.3    67
 BLACK BEAR               8170    27.2    40.3    67     30.1    45.5    66
 CANYON                   7870     7.0    11.6    60     13.1    17.6    74
 FISHER CREEK             9100    24.2    37.8    64     25.9    41.6    62
 MADISON PLATEAU          7750    16.1    24.6    65     23.4    30.2    77
 NORTHEAST ENTRANCE       7350      .4     7.6     5     10.1    14.7    69
 PARKER PEAK              9400    18.7    24.5    76     14.8    19.3    77
 SYLVAN LAKE              8420    12.4    23.9    52     20.3    24.5    83
 THUMB DIVIDE             7980     6.9    15.6    44     15.5    21.8    71
 TWO OCEAN PLATEAU        9240    24.1    31.8    76     20.5    31.8    64
 WHISKEY CREEK            6800     9.1    15.6    58     15.1    24.0    63
 WHITE MILL               8700    17.0    26.4    64     17.8    30.9    58
 WOLVERINE                7650      -M     7.6      *     8.6    15.0    57
                                                -----                  -----
                Basin wide percent of average     63                     68


WIND RIVER

 BURROUGHS CREEK          8750      -M    13.9      *      -M    19.1      *
 COLD SPRINGS             9630     6.6     4.7   140     12.7    13.7    93
 DEER PARK                9700    17.8    19.0    94     22.6    26.6    85
 HOBBS PARK              10100    19.5    17.9   109     20.6    16.6   124
 LITTLE WARM              9370     8.0    11.3    71     11.3    16.6    68
 SOUTH PASS               9040    15.2    18.1    84     20.0    22.4    89
 ST. LAWRENCE ALT         8620     6.4     6.3   102     13.8    11.9   116
 TOGWOTEE PASS            9580    20.5    27.8    74     20.6    28.7    72
 TOWNSEND CREEK           8700    11.3     9.3   122     18.1    15.2   119
                                                -----                  -----
                Basin wide percent of average     92                     92


BIGHORN BASIN

 BALD MTN.                9380    14.8    23.5    63     12.4    21.0    59
 BEAR TRAP MEADOW         8200     3.6     2.7   133      9.9    10.7    93
 BLACKWATER               9780    19.5    28.6    68     18.6    24.5    76
 BONE SPRINGS DIV         9350    11.3    18.2    62     12.0    18.0    67
 EVENING STAR             9200    18.6    33.2    56     23.5    29.6    79
 GRAVE SPRINGS            8550     8.0    11.0    73     12.1    12.9    94
 KIRWIN                   9550    10.5    13.0    81     12.3    14.0    88
 MARQUETTE                8760     7.8    11.2    70     11.5    13.4    86
 MIDDLE POWDER            7760    10.5    14.6    72     10.1    15.6    65
 OWL CREEK                8975     1.0     4.0    25      7.2     8.0    90
 POWDER RIVER PASS        9480     7.2    11.0    65     12.3    15.6    79
 SHELL CREEK              9580    12.8    16.9    76     12.5    16.5    76
 SYLVAN LAKE              8420    12.4    23.9    52     20.3    24.5    83
 SYLVAN ROAD              7120      .8     8.7     9     14.6    20.3    72
 TIMBER CREEK             7950     1.9     4.9    39      8.1    10.2    79
 YOUNTS PEAK              8350    10.8    18.1    60     11.3    18.6    61
                                                -----                  -----
                Basin wide percent of average     62                     76


SHOSHONE RIVER

 BLACKWATER               9780    19.5    28.6    68     18.6    24.5    76
 EVENING STAR             9200    18.6    33.2    56     23.5    29.6    79
 KIRWIN                   9550    10.5    13.0    81     12.3    14.0    88
 MARQUETTE                8760     7.8    11.2    70     11.5    13.4    86
 SYLVAN LAKE              8420    12.4    23.9    52     20.3    24.5    83
 SYLVAN ROAD              7120      .8     8.7     9     14.6    20.3    72
 YOUNTS PEAK              8350    10.8    18.1    60     11.3    18.6    61
                                                -----                  -----
                Basin wide percent of average     59                     77


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     3.6     2.7   133      9.9    10.7    93
 BIG GOOSE                7990     8.2    11.9    69     12.2    12.6    97
 BONE SPRINGS DIV         9350    11.3    18.2    62     12.0    18.0    67
 BURGESS JUNCTION         7880    10.3    13.4    77     12.1    15.2    80
 CLOUD PEAK RESERVOIR     9860    12.7    16.3    78     12.9    16.8    77
 DOME LAKE                8880     8.2    13.7    60     13.5    16.5    82
 GRAVE SPRINGS            8550     8.0    11.0    73     12.1    12.9    94
 HANSEN SAWMILL           8360     2.4     5.0    48      8.9    10.8    82
 MIDDLE POWDER            7760    10.5    14.6    72     10.1    15.6    65
 POWDER RIVER PASS        9480     7.2    11.0    65     12.3    15.6    79
 SUCKER CREEK             8880    11.6    13.3    87     15.4    17.1    90
 TIE CREEK                6870      .0     4.2     0     11.5    13.2    87
                                                -----                  -----
                Basin wide percent of average     69                     82


BELLE FOURCHE

 BLIND PARK               6890      .2     4.3     5     13.3    14.0    95
 COLE CANYON              5910      .0     5.4     0     11.6     9.2   126
 NORTH RAPID CREEK        6130      .1     4.7     2     12.7    11.1   114
                                                -----                  -----
                Basin wide percent of average      2                    110


UPPER N. PLATTE RIVER

 COLUMBINE                9160    16.6    21.6    77     25.0    28.9    87
 DIVIDE PEAK              8880    20.2    19.8   102     27.1    24.0   113
 ELK RIVER                8700    13.9    15.8    88     22.8    22.8   100
 JOE WRIGHT              10120    22.2    25.0    89     26.2    29.7    88
 NORTH FRENCH CREEK      10130      -M    34.4      *      -M    29.3      *
 OLD BATTLE              10000    38.0    36.6   104     40.7    39.5   103
 SAGE CREEK BASIN         7850     9.9    11.5    86     14.9    13.9   107
 SOUTH BRUSH CREEK        8440    11.5    11.5   100     21.8    19.9   110
 TOWER                   10500    38.2    52.0    73     36.6    44.7    82
 WEBBER SPRINGS           9250    22.6    25.5    89     31.9    30.9   103
 WILLOW CREEK PASS        9540    12.0    14.3    84     14.8    15.5    95
                                                -----                  -----
                Basin wide percent of average     88                     97


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    23.2    28.3    82     25.7    26.6    97
 CASPER MTN.              7900    15.4    17.4    89     17.6    19.2    92
 DEADMAN HILL            10220    27.2    19.6   139     23.4    20.7   113
 DEER PARK                9700    17.8    19.0    94     22.6    26.6    85
 LAPRELE CREEK            8375     7.3     7.6    96     16.0    16.2    99
 RENO HILL                8400    17.0    15.2   112     22.5    19.9   113
 ROACH                    9700    19.9    18.6   107     25.5    22.2   115
 SAND LAKE               10050    35.1    36.8    95     35.7    29.0   123
 SOUTH PASS               9040    15.2    18.1    84     20.0    22.4    89
 WINDY PEAK               7900     8.6     5.4   159     15.3    13.3   115
                                                -----                  -----
                Basin wide percent of average    100                    104


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     2.6     5.1    51     17.3    18.4    94
 DIVIDE PEAK              8880    20.2    19.8   102     27.1    24.0   113
 OLD BATTLE              10000    38.0    36.6   104     40.7    39.5   103
 SANDSTONE RS             8150     8.5    10.2    83     20.0    21.7    92
 WHISKEY PARK             8950    25.4    30.6    83     34.3    33.5   102
                                                -----                  -----
                Basin wide percent of average     93                    102


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     8.7    13.9    63     11.4    15.7    73
 BLIND BULL SUM           8650    19.3    28.1    69     14.6    25.0    58
 EAST RIM DIVIDE          7930      .9    13.4     7      8.5    13.8    62
 ELKHART PARK G.S.        9400     7.1    13.1    54     10.5    15.8    66
 GROS VENTRE SUMMIT       8750     8.1    13.6    60     10.5    15.1    70
 GUNSIGHT PASS            9820     9.9      -M      *    13.0      -M      *
 KENDALL R.S.             7740      .3    10.6     3      9.7    16.4    59
 LOOMIS PARK              8240     4.9    14.8    33     12.2    19.8    62
 NEW FORK LAKE            8340     2.1     9.0    23      7.4    13.2    56
 POCKET CREEK             9360     7.7      -M      *    13.3      -M      *
 SNIDER BASIN             8060     6.9    13.1    53     12.8    18.4    70
 SPRING CREEK DIVIDE      9000    20.1    28.7    70     20.5    30.0    68
 TRIPLE PEAK              8500    14.9    24.3    61     22.9    28.4    81
                                                -----                  -----
                Basin wide percent of average     51                     67


LOWER GREEN RIVER

 HAMS FORK                7840     2.5     6.6    38     11.3    14.6    77
 HEWINTA                  9519     6.5     9.8    66     14.7    17.6    84
 HICKERSON PARK           9145     5.3     6.2    85     13.0    10.0   130
 HOLE-IN-ROCK             9150     2.7     5.2    52     12.2     9.6   127
 INDIAN CREEK             9425    18.3    28.7    64     19.1    29.2    65
 KELLEY R.S.              8180     8.6    14.7    59     15.6    23.4    67
 STEEL CREEK PARK        10200    17.0    18.5    92     18.3    20.0    92
                                                -----                  -----
                Basin wide percent of average     68                     84


UPPER BEAR RIVER

 BUG LAKE                 7950    10.9    18.8    58     16.6    22.2    75
 HAYDEN FORK              9212     6.9    13.6    51     20.5    24.9    82
 KELLEY R.S.              8180     8.6    14.7    59     15.6    23.4    67
 LILY LAKE                9156     9.8    11.7    84     16.7    20.9    80
 MONTE CRISTO             8960    15.9    28.8    55     20.7    30.0    69
 SALT RIVER SUMMIT        7760     7.2    11.3    64     14.4    21.4    67
 TRIAL LAKE               9992    18.3    26.5    69     17.9    29.1    62
                                                -----                  -----
                Basin wide percent of average     62                     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.