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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 THURSDAY: MARCH 21 , 2013
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    14.6    14.7    99     17.9    19.1    94
 BLACK BEAR               8170    33.5    32.7   102     32.1    34.7    93
 BLIND BULL SUM           8650    16.8    20.6    82     12.6    17.7    71
 COTTONWOOD CREEK         7670    16.4    20.1    82     21.0    22.0    95
 EAST RIM DIVIDE          7930     8.6     9.6    90      7.5    10.6    71
 GRAND TARGHEE            9260    32.8    33.1    99     25.1    27.2    92
 GRANITE CREEK            6770    11.3    14.9    76     12.9    18.2    71
 GRASSY LAKE              7265    25.1    29.4    85     28.4    32.8    87
 GROS VENTRE SUMMIT       8750     9.2    11.7    79      9.8    11.5    85
 GUNSIGHT PASS            9820    10.0    12.1    83     10.5    12.2    86
 LEWIS LAKE DIVIDE        7850    25.8    27.9    92     28.8    32.2    89
 PHILLIPS BENCH           8200    19.6    22.5    87     21.0    25.4    83
 SALT RIVER SUMMIT        7760     9.4    12.1    78     12.9    15.0    86
 SNAKE RIVER STATION      6920    14.0    15.3    92     19.3    20.5    94
 SPRING CREEK DIVIDE      9000    19.5    21.3    92     19.5    21.5    91
 THUMB DIVIDE             7980    14.3    14.2   101     15.2    16.6    92
 TOGWOTEE PASS            9580    18.2    20.7    88     18.9    21.8    87
 TWO OCEAN PLATEAU        9240    24.8    24.1   103     21.9    24.5    89
 WILLOW CREEK             8380    22.6    25.4    89     26.9    30.1    89
 YOUNTS PEAK              8350    11.4    13.5    84     10.6    14.2    75
                                                -----                  -----
                Basin wide percent                90                     87


MADISON-GALLATIN

 BLACK BEAR               8170    33.5    32.7   102     32.1    34.7    93
 CANYON                   7870    10.2    11.8    86     11.4    14.6    78
 MADISON PLATEAU          7750    19.8    20.1    99     23.0    23.8    97
 WEST YELLOWSTONE         6700     8.6     9.9    87     12.7    12.8    99
 WHISKEY CREEK            6800    10.5    14.2    74     16.8    18.2    92
                                                -----                  -----
                Basin wide percent                93                     92


YELLOWSTONE

 BEARTOOTH LAKE           9360    15.6    19.5    80     15.8    17.8    89
 BURNT MTN                5880     3.1     4.6    67      8.0    11.0    73
 CANYON                   7870    10.2    11.8    86     11.4    14.6    78
 COLE CREEK               7850     8.7    12.1    72      7.2    10.8    67
 EVENING STAR             9200    22.4    22.4   100     24.8    24.6   101
 FISHER CREEK             9100    28.8    28.3   102     27.9    28.7    97
 NORTHEAST ENTRANCE       7350     6.6     9.1    73     10.4    11.0    95
 PARKER PEAK              9400    18.9    17.7   107     18.5    15.7   118
 SYLVAN LAKE              8420    15.6    18.2    86     20.3    20.1   101
 THUMB DIVIDE             7980    14.3    14.2   101     15.2    16.6    92
 TWO OCEAN PLATEAU        9240    24.8    24.1   103     21.9    24.5    89
 WHITE MILL               8700    19.9    20.0   100     19.5    21.3    92
 WOLVERINE                7650     8.2     8.9    92      9.4    11.0    85
                                                -----                  -----
                Basin wide percent                93                     92


WIND RIVER

 BURROUGHS CREEK          8750     9.6    12.4    77      8.7    14.3    61
 CASTLE CREEK             8400     5.2      -M      *     6.9      -M      *
 COLD SPRINGS             9630     5.9     6.4    92      7.7     8.6    90
 DEER PARK                9700    10.5    13.5    78     12.0    17.3    69
 HOBBS PARK              10100     9.9    11.9    83      9.4    11.2    84
 KIRWIN                   9550      -M     8.4      *      -M    10.0      *
 LITTLE WARM              9370     8.4     9.3    90      9.9    11.2    88
 OWL CREEK                8975     4.9     4.6   107      4.8     5.0    96
 SOUTH PASS               9040     9.0    14.0    64      8.1    15.5    52
 ST. LAWRENCE ALT         8620     3.7     6.2    60      6.2     7.6    82
 TOGWOTEE PASS            9580    18.2    20.7    88     18.9    21.8    87
 TOWNSEND CREEK           8700     4.7     8.3    57      6.9    10.2    68
                                                -----                  -----
                Basin wide percent                79                     75


BIGHORN BASIN

 BALD MTN.                9380    13.0    16.5    79      8.9    15.0    59
 BEAR TRAP MEADOW         8200     7.3     5.1   143      7.6     7.2   106
 BONE SPRINGS DIV         9350    12.2    14.2    86     10.0    13.5    74
 GRAVE SPRINGS            8550     6.3     8.2    77      7.1     9.0    79
 KIRWIN                   9550      -M     8.4      *      -M    10.0      *
 MARQUETTE                8760     5.0      -M      *     7.1      -M      *
 MIDDLE POWDER            7760     9.5     9.9    96     11.9    10.1   118
 OWL CREEK                8975     4.9     4.6   107      4.8     5.0    96
 POWDER RIVER PASS        9480     9.9     9.2   108     11.0    10.9   101
 SHELL CREEK              9580    11.8    12.9    91     10.6    11.9    89
 TIMBER CREEK             7950     3.3     4.2    79      5.8     6.2    94
                                                -----                  -----
                Basin wide percent                92                     88


SHOSHONE RIVER

 BLACKWATER               9780    19.4    20.9    93     19.2    18.2   105
 EVENING STAR             9200    22.4    22.4   100     24.8    24.6   101
 MARQUETTE                8760     5.0      -M      *     7.1      -M      *
 SYLVAN ROAD              7120     8.2    10.5    78     14.1    15.2    93
 YOUNTS PEAK              8350    11.4    13.5    84     10.6    14.2    75
                                                -----                  -----
                Basin wide percent                91                     95


POWDER RIVER

 BEAR TRAP MEADOW         8200     7.3     5.1   143      7.6     7.2   106
 CLOUD PEAK RESERVOIR     9860    10.5    13.0    81      9.8    11.3    87
 GRAVE SPRINGS            8550     6.3     8.2    77      7.1     9.0    79
 HANSEN SAWMILL           8360     5.2     5.7    91      6.8     7.2    94
 MIDDLE POWDER            7760     9.5     9.9    96     11.9    10.1   118
 POWDER RIVER PASS        9480     9.9     9.2   108     11.0    10.9   101
 SOLDIER PARK             8720     4.0      -M      *     6.7      -M      *
                                                -----                  -----
                Basin wide percent                95                     97


TONGUE RIVER

 BIG GOOSE                7990     6.0     7.9    76      7.6     9.3    82
 BONE SPRINGS DIV         9350    12.2    14.2    86     10.0    13.5    74
 BURGESS JUNCTION         7880     9.0     9.6    94      8.6    10.6    81
 DOME LAKE                8880     8.2    10.3    80      8.2    11.6    71
 LITTLE GOOSE             8870     6.9      -M      *    10.0      -M      *
 SUCKER CREEK             8880    10.6    10.9    97     10.9    12.3    89
 TIE CREEK                6870     4.7     5.0    94      9.1     9.8    93
                                                -----                  -----
                Basin wide percent                88                     81


BELLE FOURCHE

 COLE CANYON              5910     3.9     5.5    71      6.4     7.9    81
                                                -----                  -----
                Basin wide percent                71                     81


CHEYENNE RIVER BASIN

 BLIND PARK               6890     6.1     7.2    85      9.7    10.5    92
 NORTH RAPID CREEK        6130     6.0     6.5    92      7.7     8.6    90
                                                -----                  -----
                Basin wide percent                88                     91


UPPER N. PLATTE

 ARAPAHO RIDGE           10960    16.9    18.1    93     16.7    19.8    84
 BLACKHALL MTN            9820    21.5      -M      *    22.4      -M      *
 COLUMBINE                9160    19.4    22.0    88     19.2    23.1    83
 DIVIDE PEAK              8880    13.0    17.7    73     14.7    19.2    77
 JOE WRIGHT              10120    13.2    19.2    69     20.7    23.0    90
 LAPRELE CREEK            8375     5.2     9.2    57      7.1    10.9    65
 MED BOW                 10500    16.2      -M      *    25.5      -M      *
 NORTH FRENCH CREEK      10130    19.3    25.5    76     19.1    23.8    80
 NEVER SUMMER            10280    13.5    17.9    75     10.4      -M      *
 OLD BATTLE              10000    22.0    26.6    83     23.9    31.6    76
 RAWAH                    9020     9.3     9.6    97     11.9      -M      *
 SAGE CREEK BASIN         7850    11.2    11.5    97      9.0    13.0    69
 SAND LAKE               10050    19.6    24.9    79     19.4    21.8    89
 SOUTH BRUSH CREEK        8440     8.6    11.2    77      9.9    13.4    74
 TOWER                   10500    29.9    40.2    74     26.4    35.9    74
 WEBBER SPRINGS           9250    17.3    21.2    82     18.5    24.0    77
 WILLOW CREEK PASS        9540    11.1    11.0   101     12.0    11.8   102
 ZIRKEL                   9340    20.0    25.7    78     22.8      -M      *
                                                -----                  -----
                Basin wide percent                80                     80


SWEETWATER

 DEER PARK                9700    10.5    13.5    78     12.0    17.3    69
 LARSEN CREEK             9000     7.4      -M      *     9.8      -M      *
 SOUTH PASS               9040     9.0    14.0    64      8.1    15.5    52
                                                -----                  -----
                Basin wide percent                71                     61


LOWER N. PLATTE

 CASPER MTN.              7900     8.0    12.3    65      7.0    12.9    54
 LAPRELE CREEK            8375     5.2     9.2    57      7.1    10.9    65
 RENO HILL                8400     8.7    12.1    72     10.1    13.1    77
 WINDY PEAK               7900     3.8     7.2    53      6.2     9.2    67
                                                -----                  -----
                Basin wide percent                63                     66


LARAMIE RIVER

 BROOKLYN LAKE           10240    14.9    17.8    84     13.9    18.6    75
 CINNABAR PARK            9574    12.8    18.2    70     14.7    21.5    68
 CROW CREEK               8330     4.7     6.9    68      6.8     8.9    76
 DEADMAN HILL            10220    12.2    14.0    87     11.8    15.1    78
 RAWAH                    9020     9.3     9.6    97     11.9      -M      *
 ROACH                    9700    10.8    14.1    77     12.5    17.0    74
                                                -----                  -----
                Basin wide percent                80                     74


S. PLATTE

 BLACK MOUNTAIN           8920     7.4      -M      *     8.7      -M      *
 CROW CREEK               8330     4.7     6.9    68      6.8     8.9    76
 DEADMAN HILL            10220    12.2    14.0    87     11.8    15.1    78
                                                -----                  -----
                Basin wide percent                81                     78


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     6.5    11.4    57      9.1    13.7    66
 DIVIDE PEAK              8880    13.0    17.7    73     14.7    19.2    77
 ELK RIVER                8700    12.5    17.4    72     13.0    18.0    72
 LITTLE SNAKE RIVER       8915    17.7    21.2    83     22.0    26.6    83
 OLD BATTLE              10000    22.0    26.6    83     23.9    31.6    76
 SAGE CREEK BASIN         7850    11.2    11.5    97      9.0    13.0    69
 SANDSTONE RS             8150     8.4    12.4    68     10.2    16.8    61
 WHISKEY PARK             8950    20.3    24.4    83     21.5    25.1    86
                                                -----                  -----
                Basin wide percent                78                     75


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     9.3    11.7    79      9.2    11.9    77
 BLIND BULL SUM           8650    16.8    20.6    82     12.6    17.7    71
 EAST RIM DIVIDE          7930     8.6     9.6    90      7.5    10.6    71
 ELKHART PARK G.S.        9400     8.5    10.8    79      8.8    11.9    74
 GROS VENTRE SUMMIT       8750     9.2    11.7    79      9.8    11.5    85
 GUNSIGHT PASS            9820    10.0    12.1    83     10.5    12.2    86
 KENDALL R.S.             7740     8.6    11.3    76      9.8    13.0    75
 LOOMIS PARK              8240    10.0    13.4    75     11.6    15.6    74
 NEW FORK LAKE            8340     7.0     9.3    75       -M     9.7      *
 POCKET CREEK             9360     7.0      -M      *     9.0      -M      *
 SNIDER BASIN             8060     9.0    11.1    81     11.4    12.8    89
 SPRING CREEK DIVIDE      9000    19.5    21.3    92     19.5    21.5    91
 TRIPLE PEAK              8500    17.0    19.6    87     19.6    22.8    86
                                                -----                  -----
                Basin wide percent                82                     81


LOWER GREEN RIVER

 BLACKS FORK JCT          8870     6.0      -M      *     7.6      -M      *
 BUCK PASTURE             9700    10.7      -M      *    12.7      -M      *
 EF BLACKS FORK GS        9308    11.1      -M      *     7.6      -M      *
 HAMS FORK                7840     8.4    10.4    81      7.7    10.2    75
 HEWINTA                  9519     8.9    10.0    89     10.0    12.4    81
 HICKERSON PARK           9145     6.1     6.7    91      7.9     9.0    88
 HOLE-IN-ROCK             9150     7.5     6.7   112      8.3     8.4    99
 INDIAN CREEK             9425    17.2    21.5    80     15.1    20.2    75
 KELLEY R.S.              8180    10.8    13.5    80     12.0    16.3    74
 SPIRIT LK               10223     9.0      -M      *    12.8      -M      *
 STEEL CREEK PARK        10200    10.4    13.5    77     12.1    14.4    84
                                                -----                  -----
                Basin wide percent                84                     80


UPPER BEAR RIVER

 BEAR RIVER RS            8500     6.8      -M      *     9.1      -M      *
 BUG LAKE                 7950    12.6    16.8    75     14.3    17.5    82
 BURTS MILLER RANCH       8000     5.6      -M      *     6.7      -M      *
 CHALK CREEK #1           8993    15.6    21.4    73     17.7    22.3    79
 HAYDEN FORK              9212     9.3    14.4    65     13.7    18.7    73
 KELLEY R.S.              8180    10.8    13.5    80     12.0    16.3    74
 LILY LAKE                9156     9.4    11.4    82     10.3    15.1    68
 MONTE CRISTO             8960    17.0    24.6    69     19.2    23.3    82
 SALT RIVER SUMMIT        7760     9.4    12.1    78     12.9    15.0    86
                                                -----                  -----
                Basin wide percent                74                     78

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


 -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.