Wyoming Snow Precipitation Update
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 SUNDAY: JANUARY 21 , 2007
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER  
 BASE CAMP                7030     9.8    11.1    88     13.6    13.3   102
 COTTONWOOD CREEK         7600    10.6    12.6    84     13.7    16.9    81
 GRANITE CREEK            6770     7.8    10.7    73     11.1    12.2    91
 GRASSY LAKE              7265    16.0    20.1    80     23.1    22.3   104
 GROS VENTRE SUMMIT       8750     7.1     8.7    82      8.4     7.9   106
 LEWIS LAKE DIVIDE        7850    15.8    20.1    79     21.4    22.3    96
 PHILLIPS BENCH           8200    11.6    16.4    71     15.9    17.4    91
 SALT RIVER SUMMIT        7600     6.7     7.8    86      8.9    11.3    79
 SNAKE RIVER STATION      6920     9.7    10.9    89     16.8    14.0   120
 SPRING CREEK DIVIDE      9000    11.1    15.7    71     12.2    16.4    74
 THUMB DIVIDE             7980     8.0    10.3    78      9.9    11.4    87
 TOGWOTEE PASS            9580    12.0    15.1    79     13.8    15.1    91
 TWO OCEAN PLATEAU        9240    15.7    17.1    92     15.6    16.7    93
 WILLOW CREEK             8450    13.7    18.1    76     17.9    19.6    91
                                                -----                  -----
                Basin wide percent of average     80                     93
UPPER YELLOWSTONE-MADISON
 BEARTOOTH LAKE           9275    12.0    14.7    82     12.0    12.6    95
 BLACK BEAR               8170    19.6    22.9    86     22.3    23.1    97
 CANYON                   8090     6.8     8.0    85      9.9     9.7   102
 FISHER CREEK             9100    19.8    21.5    92     20.2    21.9    92
 MADISON PLATEAU          7750    10.5    14.6    72     13.6    15.7    87
 NORTHEAST ENTRANCE       7350     5.0     6.9    72      8.9     8.0   111
 PARKER PEAK              9400    11.5    13.4    86     11.1    10.1   110
 SYLVAN LAKE              8420     9.2    13.6    68     14.1    13.5   104
 THUMB DIVIDE             7980     8.0    10.3    78      9.9    11.4    87
 TWO OCEAN PLATEAU        9240    15.7    17.1    92     15.6    16.7    93
 WHISKEY CREEK            6800     6.9     9.9    70     11.7    12.4    94
 WHITE MILL               8700    11.8    14.6    81     13.4    16.3    82
 WOLVERINE                7650     6.1     7.7    79      7.0     8.4    83
                                                -----                  -----
                Basin wide percent of average     82                     94
WIND RIVER
 BURROUGHS CREEK          8750     8.4     9.1    92     10.1    10.1   100
 COLD SPRINGS             9630     3.9     5.5    71      5.2     6.6    79
 DEER PARK                9700     6.3    10.0    63      9.3    13.2    70
 HOBBS PARK              10100     6.0     9.2    65      6.1     7.6    80
 LITTLE WARM              9370     5.2     7.0    74      6.6     8.2    80
 SOUTH PASS               9040     7.5    10.3    73      8.8    11.1    79
 ST. LAWRENCE ALT         8620     3.0     4.5    67      4.5     5.3    85
 TOGWOTEE PASS            9580    12.0    15.1    79     13.8    15.1    91
 TOWNSEND CREEK           8700     4.0     5.2    77      6.6     6.8    97
                                                -----                  -----
                Basin wide percent of average     74                     85
BIGHORN BASIN
 BALD MTN.                9380    10.6    12.3    86      8.4    10.6    79
 BEAR TRAP MEADOW         8200     3.0     3.2    94      3.8     5.1    75
 BLACKWATER               9780    13.0    15.0    87     12.8    13.0    98
 BONE SPRINGS DIV         9350     9.9     9.8   101      8.4     8.8    95
 EVENING STAR             9200    14.4    17.8    81     18.0    16.0   112
 GRAVE SPRINGS            8550     3.7     5.2    71      4.2     5.9    71
 KIRWIN                   9550     6.3     7.2    88      7.5     7.0   107
 MARQUETTE                8760     1.6     5.6    29      4.9     5.9    83
 MIDDLE POWDER            7760     4.8     6.6    73      5.2     7.8    67
 OWL CREEK                8975     3.9     3.1   126      4.5     3.4   132
 POWDER RIVER PASS        9480     4.9     6.6    74      5.7     7.5    76
 SHELL CREEK              9580     8.6     9.1    95      6.5     8.4    77
 SYLVAN LAKE              8420     9.2    13.6    68     14.1    13.5   104
 SYLVAN ROAD              7120     5.7     8.0    71     11.5    12.2    94
 TIMBER CREEK             7950     1.5     3.4    44      4.2     4.2   100
 YOUNTS PEAK              8350     7.3    10.6    69      9.7    10.3    94
                                                -----                  -----
                Basin wide percent of average     79                     93
SHOSHONE RIVER
 BLACKWATER               9780    13.0    15.0    87     12.8    13.0    98
 EVENING STAR             9200    14.4    17.8    81     18.0    16.0   112
 KIRWIN                   9550     6.3     7.2    88      7.5     7.0   107
 MARQUETTE                8760     1.6     5.6    29      4.9     5.9    83
 SYLVAN LAKE              8420     9.2    13.6    68     14.1    13.5   104
 SYLVAN ROAD              7120     5.7     8.0    71     11.5    12.2    94
 YOUNTS PEAK              8350     7.3    10.6    69      9.7    10.3    94
                                                -----                  -----
                Basin wide percent of average     74                    101
POWDER-TONGUE
 BEAR TRAP MEADOW         8200     3.0     3.2    94      3.8     5.1    75
 BIG GOOSE                7990     3.7     5.5    67      5.0     5.3    94
 BONE SPRINGS DIV         9350     9.9     9.8   101      8.4     8.8    95
 BURGESS JUNCTION         7880     6.0     6.8    88      7.1     7.3    97
 CLOUD PEAK RESERVOIR     9860     6.5     7.3    89      5.4     7.6    71
 DOME LAKE                8880     5.7     7.3    78      6.7     8.1    83
 GRAVE SPRINGS            8550     3.7     5.2    71      4.2     5.9    71
 HANSEN SAWMILL           8360     1.9     3.9    49      3.1     4.9    63
 MIDDLE POWDER            7760     4.8     6.6    73      5.2     7.8    67
 POWDER RIVER PASS        9480     4.9     6.6    74      5.7     7.5    76
 SUCKER CREEK             8880     6.9     6.6   105      7.8     8.1    96
 TIE CREEK                6870     2.1     3.7    57      6.3     6.2   102
                                                -----                  -----
                Basin wide percent of average     82                     83
BELLE FOURCHE
 BLIND PARK               6890     2.1     4.7    45      5.2     7.2    72
 COLE CANYON              5910     2.2     3.7    59      4.9      -M      *
 NORTH RAPID CREEK        6130     3.1     4.4    70      4.4     5.9    75
                                                -----                  -----
                Basin wide percent of average     58                     73
UPPER N. PLATTE RIVER
 COLUMBINE                9160     9.3    14.1    66     11.5    14.9    77
 DIVIDE PEAK              8860    11.0    11.8    93     13.0    12.4   105
 ELK RIVER                8700     8.7    10.5    83     10.7    11.4    94
 JOE WRIGHT              10120    12.4    12.4   100     14.3    14.7    97
 NORTH FRENCH CREEK      10130    14.5    16.7    87     15.0    14.8   101
 OLD BATTLE               9920      -M    18.1      *      -M    20.1      *
 SAGE CREEK BASIN         7850     8.6     6.8   126      8.3     7.2   115
 SOUTH BRUSH CREEK        8440     7.6     6.6   115      9.7     9.8    99
 TOWER                   10500    15.6    26.7    58     18.5    22.7    81
 WEBBER SPRINGS           9250    11.1    14.4    77     15.1    16.2    93
 WILLOW CREEK PASS        9540     8.4     6.8   124      8.2     7.6   108
                                                -----                  -----
                Basin wide percent of average     85                     94
LOWER N. PLATTE - SWEETWATER - LARAMIE
 BROOKLYN LAKE           10220    11.7    13.7    85     12.2    12.8    95
 CASPER MTN.              7850     5.9     8.3    71      7.6     8.3    92
 DEADMAN HILL            10220    10.3     9.6   107     11.1     9.6   116
 DEER PARK                9700     6.3    10.0    63      9.3    13.2    70
 LAPRELE CREEK            8375     4.9     6.7    73      6.1     7.4    82
 RENO HILL                8500     7.1     7.8    91      8.1     8.6    94
 ROACH                    9700    10.8     9.7   111     12.5    10.6   118
 SAND LAKE               10050    15.2    18.2    84     15.0    14.4   104
 SOUTH PASS               9040     7.5    10.3    73      8.8    11.1    79
 WINDY PEAK               7900     4.8     4.1   117      6.4     6.5    98
                                                -----                  -----
                Basin wide percent of average     86                     95
LITTLE SNAKE RIVER
 BATTLE MOUNTAIN          7440     4.0     6.5    62      8.1     8.9    91
 DIVIDE PEAK              8860    11.0    11.8    93     13.0    12.4   105
 OLD BATTLE               9920      -M    18.1      *      -M    20.1      *
 SANDSTONE RS             8150     5.4     8.1    67      9.1    11.2    81
 WHISKEY PARK             8950      -M    15.8      *      -M    17.2      *
                                                -----                  -----
                Basin wide percent of average     77                     93
UPPER GREEN RIVER
 BIG SANDY OPENING        9080     7.1     8.6    83      7.2     8.1    89
 BLIND BULL SUM           8900    12.8    16.7    77     11.1    13.9    80
 EAST RIM DIVIDE          7930     5.2     7.6    68      6.7     7.3    92
 ELKHART PARK G.S.        9400     5.7     7.9    72      7.6     8.1    94
 GROS VENTRE SUMMIT       8750     7.1     8.7    82      8.4     7.9   106
 KENDALL R.S.             7740     6.6     8.8    75      8.6     8.7    99
 LOOMIS PARK              8240     7.2    10.1    71      9.6    10.6    91
 NEW FORK LAKE            8340     5.5     6.9    80      6.7     7.2    93
 SNIDER BASIN             8060     6.6     8.8    75      7.8    10.0    78
 SPRING CREEK DIVIDE      9000    11.1    15.7    71     12.2    16.4    74
 TRIPLE PEAK              8500    11.4    15.0    76     14.2    14.4    99
                                                -----                  -----
                Basin wide percent of average     75                     89
LOWER GREEN RIVER
 HAMS FORK                7840     5.2     7.4    70      5.9     7.5    79
 HEWINTA                  9500     4.3     5.7    75      8.7     8.5   102
 HICKERSON PARK           9100     4.1     3.9   105      7.0     4.8   146
 HOLE-IN-ROCK             9150     4.6     3.6   128      6.4     4.5   142
 INDIAN CREEK             9425    11.3    15.9    71     10.8    15.2    71
 KELLEY R.S.              8180     7.3     9.6    76      9.7    12.6    77
 STEEL CREEK PARK        10100     7.1     8.4    85      9.0     9.2    98
                                                -----                  -----
                Basin wide percent of average     81                     92
UPPER BEAR RIVER
 BUG LAKE                 7950     7.3    11.5    63      9.5    11.6    82
 HAYDEN FORK              9100     6.1     8.6    71     12.9    12.3   105
 KELLEY R.S.              8180     7.3     9.6    76      9.7    12.6    77
 LILY LAKE                9050     7.2     7.2   100     10.1    10.5    96
 MONTE CRISTO             8960    11.2    15.6    72     13.1    15.1    87
 SALT RIVER SUMMIT        7600     6.7     7.8    86      8.9    11.3    79
 TRIAL LAKE               9960     8.3    13.8    60     12.2    14.2    86
                                                -----                  -----
                Basin wide percent of average     73                     87
-----------------------------------------------------------------------------
 -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.
----------------------------------------------------------------------------
 -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 Index (%) 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.                       
 Medians and averages are calculated for the period 1981-2010.               
 Provisional data, subject to revision.                                      
 * Site -- Either: (a) the current value is missing; (b) the median or       
 average for the day is not available or is zero; or (c) for snow water      
 equivalent, the median for the day is less than 10% of the maximum          
 median value for  the year.                                                 
 * Basin - More than half of the sites within the basin are flagged with *,  
 preventing the calculation of a meaningful basin index.                     
 The basin index is calculated as the sum of the valid current values        
 divided by the sum of the corresponding medians (for snow water equivalent) 
 or averages (for precipitation) and the resulting fraction multiplied by 100.