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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 MONDAY: MAY 25 , 1998 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     1.2     2.0    60     25.6    27.3    94 
 COTTONWOOD CREEK         7600     5.9     5.8   102     29.9    30.4    98 
 GRANITE CREEK            6770      .5     4.0    12     25.2    29.1    87 
 GRASSY LAKE              7265    17.8    18.3    97     42.4    45.3    94 
 GROS VENTRE SUMMIT       8775     5.0     4.2   119     17.0    19.6    87 
 LEWIS LAKE DIVIDE        7860    19.4    23.8    82     38.2    46.1    83 
 PHILLIPS BENCH           8200    20.7    20.8   100     31.8    36.3    88 
 SALT RIVER SUMMIT        7600     1.0      .0      *    25.3    20.9   121 
 SNAKE RIVER STATION      6920      .0     4.7     0     27.6    31.8    87 
 SPRING CREEK DIVIDE      9000    19.7    21.9    90     27.2    33.1    82 
 THUMB DIVIDE             7980      .6     4.6    13     22.5    25.5    88 
 TOGWOTEE PASS            9580    22.8    24.6    93     29.4    34.5    85 
 TWO OCEAN PLATEAU        9360    27.1    24.1   112     33.4    37.6    89 
 WILLOW CREEK             8450    14.0    22.7    62     39.3    39.1   101 
                                                -----                  -----
                Basin wide percent of average     85                     91 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    16.0    21.7    74     19.7    24.1    82 
 BLACK BEAR               7950    35.3    31.4   112     45.0    49.7    91 
 CANYON                   7940      .0     3.5     0     17.7    18.3    97 
 FISHER CREEK             9100    27.2    34.0    80     33.5    45.9    73 
 MADISON PLATEAU          7750    13.2    12.2   108     29.7    32.5    91 
 NORTHEAST ENTRANCE       7350      .0     1.2     0     13.8    15.9    87 
 PARKER PEAK              9400    13.5    20.3    67     19.9    20.8    96 
 SYLVAN LAKE              8420     9.0    16.8    54     25.8    25.4   102 
 THUMB DIVIDE             7980      .6     4.6    13     22.5    25.5    88 
 TWO OCEAN PLATEAU        9360    27.1    24.1   112     33.4    37.6    89 
 WHISKEY CREEK            6800     4.2     4.6    91     24.9    27.0    92 
 WHITE MILL               8700    18.9    21.7    87     25.4    35.7    71 
 WOLVERINE                7650      .0     1.2     0     11.7    17.4    67 
                                                -----                  -----
                Basin wide percent of average     84                     86 


WIND RIVER

 BURROUGHS CREEK          8750     8.3     4.0   208     21.0    21.8    96 
 COLD SPRINGS             9630      .6     1.3    46     16.6    15.4   108 
 DEER PARK                9700      -M      -M      *    26.4      -M      *
 HOBBS PARK              10100    15.2    12.4   123     20.5    20.1   102 
 LITTLE WARM              9620      .9     2.6    35     17.7    18.6    95 
 SOUTH PASS               9040     7.1    12.7    56     23.0    23.2    99 
 ST. LAWRENCE ALT         8620      .0     1.0     0     15.1    14.3   106 
 TOGWOTEE PASS            9580    22.8    24.6    93     29.4    34.5    85 
 TOWNSEND CREEK           8700      .0     3.6     0     18.5    17.9   103 
                                                -----                  -----
                Basin wide percent of average     88                     98 


BIGHORN BASIN

 BALD MTN.                9375    17.2    20.9    82     20.8    24.3    86 
 BEAR TRAP MEADOW         7900      .0      .6     0*    13.1    13.2    99 
 BLACKWATER               9780    20.7    21.3    97     22.9    23.2    99 
 BONE SPRINGS DIV         9350    10.1    11.6    87     20.4    21.3    96 
 EVENING STAR             9200    17.9    27.5    65     29.6    29.0   102 
 GRAVE SPRINGS            8550      .9      -M      *    15.7    15.3   103 
 KIRWIN                   9550     6.9     7.2    96     17.7    15.5   114 
 MARQUETTE                8760     7.6     5.5   138     18.3    16.4   112 
 MIDDLE POWDER            7760      .3     7.2     4     15.1    17.4    87 
 OWL CREEK                8975      .0      .5     0     11.2    10.1   111 
 POWDER RIVER PASS        9480     2.7     3.3    82     17.6    17.4   101 
 SHELL CREEK              9580     8.2    13.6    60     14.5    18.9    77 
 SYLVAN LAKE              8420     9.0    16.8    54     25.8    25.4   102 
 SYLVAN ROAD              8120      .0     2.2     0     16.9    21.1    80 
 TIMBER CREEK             7950      -M     1.1      *    13.8    12.9   107 
 YOUNTS PEAK              8350    10.2    11.9    86     18.9    21.6    88 
                                                -----                  -----
                Basin wide percent of average     74                     96 


SHOSHONE RIVER

 BLACKWATER               9780    20.7    21.3    97     22.9    23.2    99 
 EVENING STAR             9200    17.9    27.5    65     29.6    29.0   102 
 KIRWIN                   9550     6.9     7.2    96     17.7    15.5   114 
 MARQUETTE                8760     7.6     5.5   138     18.3    16.4   112 
 SYLVAN LAKE              8420     9.0    16.8    54     25.8    25.4   102 
 SYLVAN ROAD              8120      .0     2.2     0     16.9    21.1    80 
 YOUNTS PEAK              8350    10.2    11.9    86     18.9    21.6    88 
                                                -----                  -----
                Basin wide percent of average     78                     99 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900      .0      .6     0*    13.1    13.2    99 
 BONE SPRINGS DIV         9350    10.1    11.6    87     20.4    21.3    96 
 BURGESS JUNCTION         7880     1.4     5.9    24     15.5    17.0    91 
 CLOUD PEAK RESERVOIR     9860     9.3    11.5    81     21.1    20.4   103 
 DOME LAKE                8880      -M     6.5      *    17.4    19.3    90 
 GRAVE SPRINGS            8550      .9      -M      *    15.7    15.3   103 
 HANSEN SAWMILL           8760      .0     2.1     0     14.9    12.4   120 
 MIDDLE POWDER            7760      .3     7.2     4     15.1    17.4    87 
 POWDER RIVER PASS        9480     2.7     3.3    82     17.6    17.4   101 
 SUCKER CREEK             8880      .2     6.7     3     17.5    19.6    89 
 TIE CREEK                6870      .0      -M      *    17.0    16.3   104 
                                                -----                  -----
                Basin wide percent of average     49                     98 


BELLE FOURCHE

 BLIND PARK               6890      .1     1.9     5     16.0    17.2    93 
 NORTH RAPID CREEK        6130      .0      -M      *    13.7      -M      *
 WARREN PEAK              6520      .0     2.0     0     13.6    12.6   108 
                                                -----                  -----
                Basin wide percent of average      3                     99 


UPPER N. PLATTE RIVER

 COLUMBINE                9400      .0     7.4     0     27.6    30.3    91 
 DIVIDE PEAK              8800      .0     6.9     0     24.4    30.0    81 
 ELK RIVER                8700      .0     3.6     0     23.8    24.0    99 
 JOE WRIGHT              10120    16.2    19.8    82     30.2    33.9    89 
 NORTH FRENCH CREEK      10100    26.7    22.9   117     36.0    31.3   115 
 OLD BATTLE              10000    30.1    29.3   103     42.1    38.7   109 
 SOUTH BRUSH CREEK        8400      .0     3.0     0     16.4    22.7    72 
 TOWER                   10500    46.2    47.0    98     48.4    48.0   101 
 WEBBER SPRINGS           9200     6.4    14.5    44     30.7    33.0    93 
 WILLOW CREEK PASS        9540      .0     5.7     0     11.0    17.6    62 
                                                -----                  -----
                Basin wide percent of average     78                     94 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    12.1    17.8    68     27.5    26.4   104 
 CASPER MTN.              7900      .2     6.7     3     15.8    22.0    72 
 DEADMAN HILL            10220    11.7    13.7    85     19.4    23.8    82 
 DEER PARK                9700      -M      -M      *    26.4      -M      *
 LAPRELE CREEK            8320      .0     2.0     0     13.4    17.3    77 
 RENO HILL                8400      .0     5.2     0     14.6    23.9    61 
 ROACH                    9700     6.1    11.0    55     22.0    29.2    75 
 SAND LAKE               10080    25.9    29.0    89     30.0    27.6   109 
 SOUTH PASS               9040     7.1    12.7    56     23.0    23.2    99 
 WINDY PEAK               7840      .0     1.4     0     12.1    14.9    81 
                                                -----                  -----
                Basin wide percent of average     63                     85 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0      .0   100*    18.2    20.4    89 
 DIVIDE PEAK              8800      .0     6.9     0     24.4    30.0    81 
 OLD BATTLE              10000    30.1    29.3   103     42.1    38.7   109 
 SANDSTONE RS             8150      .0      .9     0*    23.1    25.3    91 
 WHISKEY PARK             8950    27.7    17.5   158     35.2    37.3    94 
                                                -----                  -----
                Basin wide percent of average    106                     94 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100     3.6     4.0    90     16.7    20.1    83 
 BLIND BULL SUM           8650    19.5    18.9   103     23.6    28.9    82 
 EAST RIM DIVIDE          7930     4.8     9.3    52     15.2    18.8    81 
 ELKHART PARK G.S.        9400     6.3     6.6    95     18.3    19.7    93 
 GROS VENTRE SUMMIT       8775     5.0     4.2   119     17.0    19.6    87 
 KENDALL R.S.             7740      .0      .0   100*    18.8    19.2    98 
 LOOMIS PARK              8240      -M     4.7      *    21.4    23.3    92 
 NEW FORK LAKE            8340      -M     2.6      *    14.8    17.9    83 
 SNIDER BASIN             8250      .7     3.5    20     16.2    18.7    87 
 SPRING CREEK DIVIDE      9000    19.7    21.9    90     27.2    33.1    82 
 TRIPLE PEAK              8500     7.4    17.4    43     27.0    37.9    71 
                                                -----                  -----
                Basin wide percent of average     78                     84 


LOWER GREEN RIVER

 HAMS FORK                7840      .0      .0   100*    14.9    16.5    90 
 HEWINTA                  9500      .0      .0   100*    18.9    18.4   103 
 HICKERSON PARK           9150      .0      .2     0*    18.4    14.5   127 
 HOLE-IN-ROCK             9150      .0      .3     0*    16.0    14.5   110 
 INDIAN CREEK             9425    20.0    20.5    98     25.0    31.6    79 
 KELLEY R.S.              8180     2.9     4.1    71     21.4    23.2    92 
 STEEL CREEK PARK        10100    19.9    13.9   143     23.8    19.0   125 
                                                -----                  -----
                Basin wide percent of average    110*                   101 


UPPER BEAR RIVER

 BUG LAKE                 7950     7.9     5.5   144     26.2    24.4   107 
 HAYDEN FORK              9400      .2      .3    67*    26.4    25.5   104 
 KELLEY R.S.              8180     2.9     4.1    71     21.4    23.2    92 
 LILY LAKE                9050      .9     2.9    31     23.1    20.4   113 
 MONTE CRISTO             8960      -M    14.8      *      -M    32.9      *
 SALT RIVER SUMMIT        7600     1.0      .0      *    25.3    20.9   121 
 TRIAL LAKE               9960    16.5    15.7   105     29.8    30.9    96 
                                                -----                  -----
                Basin wide percent of average    100                    105 

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


-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.