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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 5 , 1998 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     8.4     9.0    93     22.8    25.5    89 
 COTTONWOOD CREEK         7600    13.5    18.3    74     26.1    28.6    91 
 GRANITE CREEK            6770    10.4    11.3    92     22.3    27.2    82 
 GRASSY LAKE              7265    25.4    32.0    79     38.5    42.5    91 
 GROS VENTRE SUMMIT       8775    10.7    12.8    84     15.0    18.4    82 
 LEWIS LAKE DIVIDE        7860    26.7    33.0    81     35.3    43.2    82 
 PHILLIPS BENCH           8200    25.0    28.3    88     29.1    34.1    85 
 SALT RIVER SUMMIT        7600     8.4     7.7   109     20.4    19.5   105 
 SNAKE RIVER STATION      6920     9.2    15.0    61     24.8    29.8    83 
 SPRING CREEK DIVIDE      9000    20.5    28.6    72     24.7    31.2    79 
 THUMB DIVIDE             7980    11.3    14.0    81     20.1    23.9    84 
 TOGWOTEE PASS            9580    24.4    27.6    88     26.7    32.3    83 
 TWO OCEAN PLATEAU        9360    29.7    27.2   109     30.4    35.2    86 
 WILLOW CREEK             8450    20.2    30.7    66     35.2    36.7    96 
                                                -----                  -----
                Basin wide percent of average     83                     87 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    18.4    25.7    72     18.3    21.7    84 
 BLACK BEAR               7950    37.7    39.0    97     39.9    47.0    85 
 CANYON                   7940     7.6     9.6    79     16.4    16.6    99 
 FISHER CREEK             9100    28.1    38.3    73     30.9    42.8    72 
 MADISON PLATEAU          7750    18.4    22.4    82     25.8    30.3    85 
 NORTHEAST ENTRANCE       7350      .0     5.0     0     12.7    14.2    89 
 PARKER PEAK              9400    16.7    23.4    71     18.0    18.6    97 
 SYLVAN LAKE              8420    15.2    22.9    66     22.7    22.8   100 
 THUMB DIVIDE             7980    11.3    14.0    81     20.1    23.9    84 
 TWO OCEAN PLATEAU        9360    29.7    27.2   109     30.4    35.2    86 
 WHISKEY CREEK            6800    13.0    13.6    96     21.2    25.2    84 
 WHITE MILL               8700    22.1    25.9    85     23.1    33.1    70 
 WOLVERINE                7650      .2     6.6     3       -M    15.6      *
                                                -----                  -----
                Basin wide percent of average     80                     84 


WIND RIVER

 BURROUGHS CREEK          8750    14.8    11.2   132     19.5    19.8    98 
 COLD SPRINGS             9630     7.5     5.7   132     14.8    13.5   110 
 DEER PARK                9700      -M      -M      *    24.8      -M      *
 HOBBS PARK              10100    18.3    17.7   103     18.2    17.8   102 
 LITTLE WARM              9620     8.5     9.0    94     15.9    16.7    95 
 SOUTH PASS               9040    15.0    17.6    85     21.1    21.0   100 
 ST. LAWRENCE ALT         8620     7.5     4.5   167     13.1    12.8   102 
 TOGWOTEE PASS            9580    24.4    27.6    88     26.7    32.3    83 
 TOWNSEND CREEK           8700    10.2     8.5   120     17.1    15.9   108 
                                                -----                  -----
                Basin wide percent of average    104                     98 


BIGHORN BASIN

 BALD MTN.                9375    21.0    24.2    87     20.4    21.4    95 
 BEAR TRAP MEADOW         7900      .2     3.4     6     11.5    11.0   105 
 BLACKWATER               9780    20.7    25.4    81     20.5    21.0    98 
 BONE SPRINGS DIV         9350    18.9    17.9   106     19.8    18.6   106 
 EVENING STAR             9200    20.6    30.7    67     27.1    26.4   103 
 GRAVE SPRINGS            8550    10.4      -M      *    14.0    12.9   109 
 KIRWIN                   9550    11.8    11.2   105     16.0    13.7   117 
 MARQUETTE                8760    12.6     8.3   152     16.5    14.0   118 
 MIDDLE POWDER            7760    10.5    14.6    72     13.4    15.2    88 
 OWL CREEK                8975     4.6     2.7   170      9.8     8.4   117 
 POWDER RIVER PASS        9480     9.9     9.3   106     16.1    15.2   106 
 SHELL CREEK              9580    13.7    17.0    81     13.8    16.4    84 
 SYLVAN LAKE              8420    15.2    22.9    66     22.7    22.8   100 
 SYLVAN ROAD              8120     2.1     6.8    31     15.2    19.0    80 
 TIMBER CREEK             7950     6.1     5.0   122     12.7    10.5   121 
 YOUNTS PEAK              8350    14.7    17.6    84     16.9    19.7    86 
                                                -----                  -----
                Basin wide percent of average     84                    100 


SHOSHONE RIVER

 BLACKWATER               9780    20.7    25.4    81     20.5    21.0    98 
 EVENING STAR             9200    20.6    30.7    67     27.1    26.4   103 
 KIRWIN                   9550    11.8    11.2   105     16.0    13.7   117 
 MARQUETTE                8760    12.6     8.3   152     16.5    14.0   118 
 SYLVAN LAKE              8420    15.2    22.9    66     22.7    22.8   100 
 SYLVAN ROAD              8120     2.1     6.8    31     15.2    19.0    80 
 YOUNTS PEAK              8350    14.7    17.6    84     16.9    19.7    86 
                                                -----                  -----
                Basin wide percent of average     79                     99 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900      .2     3.4     6     11.5    11.0   105 
 BONE SPRINGS DIV         9350    18.9    17.9   106     19.8    18.6   106 
 BURGESS JUNCTION         7880    10.8    12.8    84     15.1    14.8   102 
 CLOUD PEAK RESERVOIR     9860    15.9    17.2    92     19.9    17.6   113 
 DOME LAKE                8880      -M    13.7      *    16.4    16.9    97 
 GRAVE SPRINGS            8550    10.4      -M      *    14.0    12.9   109 
 HANSEN SAWMILL           8760     4.9     6.1    80     13.6    10.6   128 
 MIDDLE POWDER            7760    10.5    14.6    72     13.4    15.2    88 
 POWDER RIVER PASS        9480     9.9     9.3   106     16.1    15.2   106 
 SUCKER CREEK             8880    10.6    12.9    82     16.9    17.0    99 
 TIE CREEK                6870     2.3      -M      *    16.3    14.2   115 
                                                -----                  -----
                Basin wide percent of average     87                    105 


BELLE FOURCHE

 BLIND PARK               6890      .1     8.2     1     14.1    14.4    98 
 NORTH RAPID CREEK        6130     1.1      -M      *    11.8      -M      *
 WARREN PEAK              6520     4.4     8.2    54     12.3    10.7   115 
                                                -----                  -----
                Basin wide percent of average     27                    105 


UPPER N. PLATTE RIVER

 COLUMBINE                9400     9.7    19.8    49     25.6    28.5    90 
 DIVIDE PEAK              8800    13.3    17.4    76     22.2    27.8    80 
 ELK RIVER                8700     8.3    14.0    59     22.2    22.4    99 
 JOE WRIGHT              10120    20.2    24.4    83     27.7    30.9    90 
 NORTH FRENCH CREEK      10100    30.5    28.6   107     32.7    28.6   114 
 OLD BATTLE              10000    34.2    37.8    90     38.9    36.2   107 
 SOUTH BRUSH CREEK        8400     1.7     9.3    18     14.4    20.9    69 
 TOWER                   10500    51.9    51.0   102     45.2    44.0   103 
 WEBBER SPRINGS           9200    16.8    24.4    69     28.6    31.0    92 
 WILLOW CREEK PASS        9540     8.7    12.7    69      9.7    15.8    61 
                                                -----                  -----
                Basin wide percent of average     82                     93 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    21.6    27.8    78     24.8    24.2   102 
 CASPER MTN.              7900     7.6    15.9    48     15.1    19.3    78 
 DEADMAN HILL            10220    16.3    19.0    86     17.8    21.6    82 
 DEER PARK                9700      -M      -M      *    24.8      -M      *
 LAPRELE CREEK            8320      .0     5.5     0     12.6    15.1    83 
 RENO HILL                8400     6.5    12.0    54     13.6    22.6    60 
 ROACH                    9700    14.3    17.5    82     20.2    26.4    77 
 SAND LAKE               10080    29.2    36.7    80     27.3    25.3   108 
 SOUTH PASS               9040    15.0    17.6    85     21.1    21.0   100 
 WINDY PEAK               7840      .3     6.6     5     10.7    12.7    84 
                                                -----                  -----
                Basin wide percent of average     70                     87 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .2     3.4     6     17.6    18.8    94 
 DIVIDE PEAK              8800    13.3    17.4    76     22.2    27.8    80 
 OLD BATTLE              10000    34.2    37.8    90     38.9    36.2   107 
 SANDSTONE RS             8150     3.8     7.7    49     21.5    23.4    92 
 WHISKEY PARK             8950    26.8    28.4    94     31.2    34.6    90 
                                                -----                  -----
                Basin wide percent of average     83                     93 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100     9.5    12.7    75     14.0    18.8    74 
 BLIND BULL SUM           8650    22.6    22.6   100     20.9    27.2    77 
 EAST RIM DIVIDE          7930    10.7    14.2    75     13.2    17.5    75 
 ELKHART PARK G.S.        9400     8.9    12.8    70     15.4    18.5    83 
 GROS VENTRE SUMMIT       8775    10.7    12.8    84     15.0    18.4    82 
 KENDALL R.S.             7740     6.5     7.6    86     16.7    17.9    93 
 LOOMIS PARK              8240      -M    14.0      *    19.2    21.7    88 
 NEW FORK LAKE            8340     5.2     8.3    63     13.0    16.6    78 
 SNIDER BASIN             8250    10.4    11.7    89     14.6    17.5    83 
 SPRING CREEK DIVIDE      9000    20.5    28.6    72     24.7    31.2    79 
 TRIPLE PEAK              8500    15.5    23.9    65     24.7    35.5    70 
                                                -----                  -----
                Basin wide percent of average     78                     79 


LOWER GREEN RIVER

 HAMS FORK                7840      .5     4.1    12     13.3    15.4    86 
 HEWINTA                  9500     6.0     3.8   158     17.3    16.6   104 
 HICKERSON PARK           9150     8.4     2.2   382     15.6    12.7   123 
 HOLE-IN-ROCK             9150     4.9     1.8   272     13.5    12.7   106 
 INDIAN CREEK             9425    22.1    27.8    79     22.1    29.6    75 
 KELLEY R.S.              8180     9.9    13.6    73     18.4    21.6    85 
 STEEL CREEK PARK        10100    20.3    18.2   112     21.9    16.6   132 
                                                -----                  -----
                Basin wide percent of average    101                     98 


UPPER BEAR RIVER

 BUG LAKE                 7950    15.3    14.3   107     23.6    22.9   103 
 HAYDEN FORK              9400     8.4     4.9   171     23.9    23.4   102 
 KELLEY R.S.              8180     9.9    13.6    73     18.4    21.6    85 
 LILY LAKE                9050     9.6     7.8   123     20.7    18.4   113 
 MONTE CRISTO             8960    25.5    25.0   102     29.7    30.7    97 
 SALT RIVER SUMMIT        7600     8.4     7.7   109     20.4    19.5   105 
 TRIAL LAKE               9960    22.4    23.1    97     26.6    28.7    93 
                                                -----                  -----
                Basin wide percent of average    103                     99 

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


-M = Missing data
 * = Data may not provide a valid measure of conditions.
 
     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 1961-90.

Provisional data, subject to revision.