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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
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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 SATURDAY: MAY 4 , 2013
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     9.5     7.8   122     22.1    23.1    96
 BLACK BEAR               8170    39.3    37.3   105     37.4    42.2    89
 BLIND BULL SUM           8650    21.5    22.8    94     16.3    21.6    75
 COTTONWOOD CREEK         7670    15.4    14.4   107     26.1    27.8    94
 EAST RIM DIVIDE          7930     2.1     7.7    27     10.4    13.1    79
 GRAND TARGHEE            9260    41.5    45.7    91     31.2    35.2    89
 GRANITE CREEK            6770     6.5     7.6    86     16.8    21.6    78
 GRASSY LAKE              7265    22.5    27.9    81     34.0    39.7    86
 GROS VENTRE SUMMIT       8750     9.4    11.1    85     13.2    14.9    89
 GUNSIGHT PASS            9820    12.1    12.0   101     13.7    16.3    84
 LEWIS LAKE DIVIDE        7850    26.2    29.6    89     34.1    39.0    87
 PHILLIPS BENCH           8200    24.0    24.5    98     27.2    31.0    88
 SALT RIVER SUMMIT        7760     6.4     7.4    86     15.9    18.6    85
 SNAKE RIVER STATION      6920     5.4     5.6    96     23.0    25.0    92
 SPRING CREEK DIVIDE      9000    25.1    24.3   103     25.1    26.5    95
 THUMB DIVIDE             7980    11.2    10.8   104     18.9    21.3    89
 TOGWOTEE PASS            9580    23.3    24.7    94     25.1    27.7    91
 TWO OCEAN PLATEAU        9240    32.0    29.9   107     27.9    30.5    91
 WILLOW CREEK             8380    24.3    22.0   110     34.7    38.1    91
 YOUNTS PEAK              8350    14.2    15.8    90     13.7    18.0    76
                                                -----                  -----
                Basin wide percent                96                     88


MADISON-GALLATIN

 BLACK BEAR               8170    39.3    37.3   105     37.4    42.2    89
 CANYON                   7870    10.6     9.1   116     14.2    18.2    78
 MADISON PLATEAU          7750    19.2    20.9    92     25.9    29.2    89
 WEST YELLOWSTONE         6700      .1      .2    50*    14.2    16.2    88
 WHISKEY CREEK            6800     9.0    13.3    68     19.1    22.6    85
                                                -----                  -----
                Basin wide percent                97                     86


YELLOWSTONE

 BEARTOOTH LAKE           9360    20.1    22.7    89     20.6    22.2    93
 BURNT MTN                5880      .0      .0      *    12.4    16.2    77
 CANYON                   7870    10.6     9.1   116     14.2    18.2    78
 COLE CREEK               7850    15.0    16.7    90     11.7    16.7    70
 EVENING STAR             9200    25.9    24.9   104     31.1    30.8   101
 FISHER CREEK             9100    32.7    32.7   100     33.6    35.5    95
 NORTHEAST ENTRANCE       7350     2.1     1.6   131     12.5    14.0    89
 PARKER PEAK              9400    25.1    21.2   118     23.5    20.3   116
 SYLVAN LAKE              8420    17.3    19.0    91     25.6    25.4   101
 THUMB DIVIDE             7980    11.2    10.8   104     18.9    21.3    89
 TWO OCEAN PLATEAU        9240    32.0    29.9   107     27.9    30.5    91
 WHITE MILL               8700    24.7    24.0   103     24.2    26.6    91
 WOLVERINE                7650     4.4     1.1   400     12.4    14.0    89
                                                -----                  -----
                Basin wide percent               103                     92


WIND RIVER

 BURROUGHS CREEK          8750    12.6    12.6   100     12.8    18.2    70
 CASTLE CREEK             8400      .3      -M      *     9.6      -M      *
 COLD SPRINGS             9630     1.3     1.4    93      9.9    12.7    78
 DEER PARK                9700    12.8    15.4    83     16.3    23.8    68
 HOBBS PARK              10100    13.0    16.0    81     13.6    17.0    80
 KIRWIN                   9550    11.6    10.6   109     13.7    14.1    97
 LITTLE WARM              9370     8.3     8.1   102     13.0    15.6    83
 OWL CREEK                8975     4.5      .6   750      8.0     8.1    99
 SOUTH PASS               9040    11.3    14.1    80     12.0    20.7    58
 ST. LAWRENCE ALT         8620      .6     2.0    30      9.9    11.8    84
 TOGWOTEE PASS            9580    23.3    24.7    94     25.1    27.7    91
 TOWNSEND CREEK           8700     7.4     6.6   112     11.9    15.2    78
                                                -----                  -----
                Basin wide percent                95                     79


BIGHORN BASIN

 BALD MTN.                9380    17.6    20.4    86     13.1    20.0    66
 BEAR TRAP MEADOW         8200     7.6      .4  1900*    11.7    10.9   107
 BONE SPRINGS DIV         9350    17.3    16.4   105     14.2    18.6    76
 GRAVE SPRINGS            8550     8.1     9.3    87     10.2    13.1    78
 KIRWIN                   9550    11.6    10.6   109     13.7    14.1    97
 MARQUETTE                8760     9.9      -M      *    11.8      -M      *
 MIDDLE POWDER            7760    13.2    11.4   116     15.9    14.4   110
 OWL CREEK                8975     4.5      .6   750      8.0     8.1    99
 POWDER RIVER PASS        9480    14.0     9.1   154     17.7    15.4   115
 SHELL CREEK              9580    17.9    16.0   112     16.5    16.6    99
 TIMBER CREEK             7950     3.3     2.5   132     10.4    10.2   102
                                                -----                  -----
                Basin wide percent               119                     93


SHOSHONE RIVER

 BLACKWATER               9780    26.4    25.8   102     26.2    23.8   110
 EVENING STAR             9200    25.9    24.9   104     31.1    30.8   101
 MARQUETTE                8760     9.9      -M      *    11.8      -M      *
 SYLVAN ROAD              7120      .2     4.1     5     16.7    18.8    89
 YOUNTS PEAK              8350    14.2    15.8    90     13.7    18.0    76
                                                -----                  -----
                Basin wide percent                94                     96


POWDER RIVER

 BEAR TRAP MEADOW         8200     7.6      .4  1900*    11.7    10.9   107
 CLOUD PEAK RESERVOIR     9860    16.3    16.3   100     15.4    17.0    91
 GRAVE SPRINGS            8550     8.1     9.3    87     10.2    13.1    78
 HANSEN SAWMILL           8360     7.1     1.7   418     11.1    11.1   100
 MIDDLE POWDER            7760    13.2    11.4   116     15.9    14.4   110
 POWDER RIVER PASS        9480    14.0     9.1   154     17.7    15.4   115
 SOLDIER PARK             8720     6.1      -M      *    10.7      -M      *
                                                -----                  -----
                Basin wide percent               138                    100


TONGUE RIVER

 BIG GOOSE                7990     9.2     9.4    98     11.7    14.4    81
 BONE SPRINGS DIV         9350    17.3    16.4   105     14.2    18.6    76
 BURGESS JUNCTION         7880    12.3    11.8   104     11.9    15.1    79
 DOME LAKE                8880    11.6    11.3   103     12.8    16.7    77
 LITTLE GOOSE             8870    10.7      -M      *    15.2      -M      *
 SUCKER CREEK             8880    13.9    11.9   117     15.7    17.7    89
 TIE CREEK                6870     4.0     2.5   160     13.1    14.7    89
                                                -----                  -----
                Basin wide percent               108                     82


BELLE FOURCHE

 COLE CANYON              5910     3.3      .0      *    10.5    12.4    85
                                                -----                  -----
                Basin wide percent                  *                    85


CHEYENNE RIVER BASIN

 BLIND PARK               6890     3.0      .2  1500*    14.1    14.6    97
 NORTH RAPID CREEK        6130     3.4      .0      *    11.8    12.6    94
                                                -----                  -----
                Basin wide percent              3200*                    95


UPPER N. PLATTE

 ARAPAHO RIDGE           10960    21.7    22.3    97     24.5    26.5    92
 BLACKHALL MTN            9820    29.6      -M      *    31.2      -M      *
 COLUMBINE                9160    17.2    17.1   101     27.3    28.9    94
 DIVIDE PEAK              8880    13.6    17.5    78     21.8    24.8    88
 JOE WRIGHT              10120    23.0    22.9   100     31.8    30.4   105
 LAPRELE CREEK            8375     4.3     5.4    80     11.0    15.3    72
 MED BOW                 10500     2.0      -M      *    33.3      -M      *
 NORTH FRENCH CREEK      10130    25.7    32.7    79     27.1    31.2    87
 NEVER SUMMER            10280    22.0    21.8   101     17.4      -M      *
 OLD BATTLE              10000    30.8    34.8    89     32.9    39.7    83
 RAWAH                    9020    11.4     4.8   238     18.7    17.6   106
 SAGE CREEK BASIN         7850      -M      .8      *    11.5    16.4    70
 SAND LAKE               10050    26.1    31.6    83     26.8    29.5    91
 SOUTH BRUSH CREEK        8440     7.0     7.9    89     15.1    18.2    83
 TOWER                   10500    39.0    50.7    77       -M    45.3      *
 WEBBER SPRINGS           9250    20.8    21.1    99     26.2    30.3    86
 WILLOW CREEK PASS        9540    19.3    14.5   133     19.6    16.0   122
 ZIRKEL                   9340    24.2    20.7   117     32.6    31.3   104
                                                -----                  -----
                Basin wide percent                94                     92


SWEETWATER

 DEER PARK                9700    12.8    15.4    83     16.3    23.8    68
 LARSEN CREEK             9000      .0      -M      *    11.6      -M      *
 SOUTH PASS               9040    11.3    14.1    80     12.0    20.7    58
                                                -----                  -----
                Basin wide percent                82                     64


LOWER N. PLATTE

 CASPER MTN.              7900    12.2    12.5    98     11.5    18.4    62
 LAPRELE CREEK            8375     4.3     5.4    80     11.0    15.3    72
 RENO HILL                8400    11.9    12.1    98     15.7    19.3    81
 WINDY PEAK               7900     4.1     3.1   132     10.5    13.2    80
                                                -----                  -----
                Basin wide percent                98                     74


LARAMIE RIVER

 BROOKLYN LAKE           10240    19.9    23.0    87     21.9    25.1    87
 CINNABAR PARK            9574    14.8    18.8    79     22.8    27.3    84
 CROW CREEK               8330     2.7      .0      *    12.5    13.7    91
 DEADMAN HILL            10220    18.6    19.1    97     19.4    21.0    92
 RAWAH                    9020    11.4     4.8   238     18.7    17.6   106
 ROACH                    9700    17.1    17.1   100     20.9    22.6    92
                                                -----                  -----
                Basin wide percent               102                     91


S. PLATTE

 BLACK MOUNTAIN           8920    10.9      -M      *    16.0      -M      *
 CROW CREEK               8330     2.7      .0      *    12.5    13.7    91
 DEADMAN HILL            10220    18.6    19.1    97     19.4    21.0    92
                                                -----                  -----
                Basin wide percent               112*                    92


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .4      .0      *    13.3    17.4    76
 DIVIDE PEAK              8880    13.6    17.5    78     21.8    24.8    88
 ELK RIVER                8700    11.9    12.0    99     19.8    23.1    86
 LITTLE SNAKE RIVER       8915    20.5    21.7    94     29.7    33.2    89
 OLD BATTLE              10000    30.8    34.8    89     32.9    39.7    83
 SAGE CREEK BASIN         7850      -M      .8      *    11.5    16.4    70
 SANDSTONE RS             8150     4.4     4.6    96     14.6    21.0    70
 WHISKEY PARK             8950    24.4    26.9    91     30.2    32.0    94
                                                -----                  -----
                Basin wide percent                90                     84


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    10.0     9.4   106     12.1    15.5    78
 BLIND BULL SUM           8650    21.5    22.8    94     16.3    21.6    75
 EAST RIM DIVIDE          7930     2.1     7.7    27     10.4    13.1    79
 ELKHART PARK G.S.        9400     9.9    10.6    93     11.7    15.2    77
 GROS VENTRE SUMMIT       8750     9.4    11.1    85     13.2    14.9    89
 GUNSIGHT PASS            9820    12.1    12.0   101     13.7    16.3    84
 KENDALL R.S.             7740      .8     2.6    31     12.0    15.7    76
 LOOMIS PARK              8240     7.3    10.0    73     15.6    19.2    81
 NEW FORK LAKE            8340     2.9     5.5    53      8.1    12.3    66
 POCKET CREEK             9360     9.1      -M      *    11.8      -M      *
 SNIDER BASIN             8060     2.6     8.5    31     15.1    15.8    96
 SPRING CREEK DIVIDE      9000    25.1    24.3   103     25.1    26.5    95
 TRIPLE PEAK              8500    18.3    16.3   112     26.0    28.2    92
                                                -----                  -----
                Basin wide percent                87                     84


LOWER GREEN RIVER

 BLACKS FORK JCT          8870     5.4      -M      *    12.4      -M      *
 BUCK PASTURE             9700    12.7      -M      *    18.2      -M      *
 EF BLACKS FORK GS        9308    10.8      -M      *    12.9      -M      *
 HAMS FORK                7840      .2     1.5    13     11.2    13.3    84
 HEWINTA                  9519     7.9     4.2   188     15.1    16.5    92
 HICKERSON PARK           9145     5.3     3.2   166     12.3    12.2   101
 HOLE-IN-ROCK             9150     7.5     1.7   441     13.3    11.8   113
 INDIAN CREEK             9425    21.6    22.1    98     20.9    25.3    83
 KELLEY R.S.              8180     9.6    10.4    92     15.6    20.5    76
 SPIRIT LK               10223    11.4      -M      *    17.6      -M      *
 STEEL CREEK PARK        10200    15.8    17.4    91     18.4    19.5    94
                                                -----                  -----
                Basin wide percent               112                     90


UPPER BEAR RIVER

 BEAR RIVER RS            8500      .3      -M      *    13.3      -M      *
 BUG LAKE                 7950    10.5    13.8    76     18.0    22.0    82
 BURTS MILLER RANCH       8000      .1      -M      *     8.7      -M      *
 CHALK CREEK #1           8993    19.4    23.4    83     24.3    28.9    84
 HAYDEN FORK              9212     7.4     8.6    86     19.6    24.1    81
 KELLEY R.S.              8180     9.6    10.4    92     15.6    20.5    76
 LILY LAKE                9156    10.7     9.7   110     15.2    19.9    76
 MONTE CRISTO             8960    19.8    25.3    78     24.8    29.7    84
 SALT RIVER SUMMIT        7760     6.4     7.4    86     15.9    18.6    85
                                                -----                  -----
                Basin wide percent                85                     81

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


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

Total Precipitation values

If the Basin wide percent 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 Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median 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 comparison of conditions is 1981-2010.

Provisional data, subject to revision.