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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 WEDNESDAY: APRIL 29 , 1998 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    12.1    11.4   106     22.9    25.0    92 
 COTTONWOOD CREEK         7600    18.0    20.4    88     25.6    28.0    91 
 GRANITE CREEK            6770    13.5    13.5   100     22.2    26.6    83 
 GRASSY LAKE              7265    30.8    34.4    90     38.4    41.6    92 
 GROS VENTRE SUMMIT       8775    12.1    14.2    85     14.9    18.0    83 
 LEWIS LAKE DIVIDE        7860    32.0    34.7    92     35.3    42.3    83 
 PHILLIPS BENCH           8200    27.8    29.7    94     28.9    33.4    87 
 SALT RIVER SUMMIT        7600    12.8    11.2   114     20.2    19.1   106 
 SNAKE RIVER STATION      6920    14.2    16.7    85     24.8    29.2    85 
 SPRING CREEK DIVIDE      9000    23.3    29.6    79     24.2    30.6    79 
 THUMB DIVIDE             7980    15.7    15.4   102     20.0    23.4    85 
 TOGWOTEE PASS            9580    25.6    28.1    91     26.7    31.7    84 
 TWO OCEAN PLATEAU        9360    31.3    27.5   114     30.3    34.5    88 
 WILLOW CREEK             8450    25.5    31.9    80     35.0    36.0    97 
                                                -----                  -----
                Basin wide percent of average     92                     88 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    20.4    25.9    79     18.3    21.0    87 
 BLACK BEAR               7950      -M    39.9      *    39.9    46.2    86 
 CANYON                   7940    11.8    11.2   105     16.5    16.2   102 
 FISHER CREEK             9100    30.6    38.6    79     30.8    41.9    74 
 MADISON PLATEAU          7750    21.3    24.0    89     25.7    29.7    87 
 NORTHEAST ENTRANCE       7350     1.9     6.3    30     12.7    13.8    92 
 PARKER PEAK              9400      -M    23.6      *    17.8    18.0    99 
 SYLVAN LAKE              8420    17.6    23.8    74     22.6    22.1   102 
 THUMB DIVIDE             7980    15.7    15.4   102     20.0    23.4    85 
 TWO OCEAN PLATEAU        9360    31.3    27.5   114     30.3    34.5    88 
 WHISKEY CREEK            6800    15.6    15.6   100     21.4    24.7    87 
 WHITE MILL               8700    23.8    26.2    91     23.1    32.3    72 
 WOLVERINE                7650     4.7     8.6    55     10.9    15.0    73 
                                                -----                  -----
                Basin wide percent of average     87                     86 


WIND RIVER

 BURROUGHS CREEK          8750    16.8    13.2   127     19.3    19.2   101 
 COLD SPRINGS             9630    11.1     7.0   159     14.7    12.9   114 
 DEER PARK                9700      -M      -M      *    24.6      -M      *
 HOBBS PARK              10100    19.7    17.8   111     18.1    17.1   106 
 LITTLE WARM              9620    11.8    10.8   109     15.9    16.1    99 
 SOUTH PASS               9040    17.0    18.0    94     21.1    20.4   103 
 ST. LAWRENCE ALT         8620    10.8     5.6   193     12.9    12.3   105 
 TOGWOTEE PASS            9580    25.6    28.1    91     26.7    31.7    84 
 TOWNSEND CREEK           8700    12.4     9.6   129     17.0    15.3   111 
                                                -----                  -----
                Basin wide percent of average    114                    100 


BIGHORN BASIN

 BALD MTN.                9375    22.7    23.9    95     20.4    20.6    99 
 BEAR TRAP MEADOW         7900     4.5     4.5   100     11.5    10.4   111 
 BLACKWATER               9780    22.5    25.6    88     20.5    20.4   100 
 BONE SPRINGS DIV         9350      -M    18.4      *    19.8    17.9   111 
 EVENING STAR             9200    23.6    30.6    77     27.1    25.7   105 
 GRAVE SPRINGS            8550    12.2      -M      *    13.9    12.2   114 
 KIRWIN                   9550    13.3    11.6   115     15.9    13.1   121 
 MARQUETTE                8760    14.5     8.6   169     16.4    13.2   124 
 MIDDLE POWDER            7760    12.7    14.7    86     13.4    14.6    92 
 OWL CREEK                8975     7.7     3.6   214      9.7     8.0   121 
 POWDER RIVER PASS        9480    13.0    10.6   123     16.1    14.5   111 
 SHELL CREEK              9580      -M    16.9      *    13.8    15.7    88 
 SYLVAN LAKE              8420    17.6    23.8    74     22.6    22.1   102 
 SYLVAN ROAD              8120     6.9     8.3    83     15.3    18.4    83 
 TIMBER CREEK             7950     8.9     6.1   146     12.7     9.8   130 
 YOUNTS PEAK              8350    15.9    18.3    87     16.8    19.1    88 
                                                -----                  -----
                Basin wide percent of average     97                    104 


SHOSHONE RIVER

 BLACKWATER               9780    22.5    25.6    88     20.5    20.4   100 
 EVENING STAR             9200    23.6    30.6    77     27.1    25.7   105 
 KIRWIN                   9550    13.3    11.6   115     15.9    13.1   121 
 MARQUETTE                8760    14.5     8.6   169     16.4    13.2   124 
 SYLVAN LAKE              8420    17.6    23.8    74     22.6    22.1   102 
 SYLVAN ROAD              8120     6.9     8.3    83     15.3    18.4    83 
 YOUNTS PEAK              8350    15.9    18.3    87     16.8    19.1    88 
                                                -----                  -----
                Basin wide percent of average     90                    102 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     4.5     4.5   100     11.5    10.4   111 
 BONE SPRINGS DIV         9350      -M    18.4      *    19.8    17.9   111 
 BURGESS JUNCTION         7880    13.0    13.4    97     15.1    14.2   106 
 CLOUD PEAK RESERVOIR     9860    19.0    17.6   108     19.8    16.8   118 
 DOME LAKE                8880      -M    15.0      *    16.4    16.2   101 
 GRAVE SPRINGS            8550    12.2      -M      *    13.9    12.2   114 
 HANSEN SAWMILL           8760     8.9     7.0   127     13.6    10.1   135 
 MIDDLE POWDER            7760    12.7    14.7    86     13.4    14.6    92 
 POWDER RIVER PASS        9480    13.0    10.6   123     16.1    14.5   111 
 SUCKER CREEK             8880    13.5    13.7    99     16.9    16.3   104 
 TIE CREEK                6870     7.0      -M      *    16.3    13.6   120 
                                                -----                  -----
                Basin wide percent of average    104                    110 


BELLE FOURCHE

 BLIND PARK               6890     3.2     9.8    33     13.8    13.5   102 
 NORTH RAPID CREEK        6130     5.3      -M      *    11.7      -M      *
 WARREN PEAK              6520     9.3     9.8    95     12.4    10.1   123 
                                                -----                  -----
                Basin wide percent of average     64                    111 


UPPER N. PLATTE RIVER

 COLUMBINE                9400    15.8    22.4    71     25.3    27.9    91 
 DIVIDE PEAK              8800    18.4    19.6    94     22.4    27.0    83 
 ELK RIVER                8700    13.3    16.7    80     23.1    21.9   105 
 JOE WRIGHT              10120    23.4    24.6    95     27.3    29.9    91 
 NORTH FRENCH CREEK      10100    33.9    29.2   116     32.6    27.7   118 
 OLD BATTLE              10000    35.6    37.9    94     38.8    35.3   110 
 SOUTH BRUSH CREEK        8400     3.9    10.9    36     14.4    20.3    71 
 TOWER                   10500    53.6    50.8   106     45.1    42.7   106 
 WEBBER SPRINGS           9200    20.5    26.3    78     28.6    30.2    95 
 WILLOW CREEK PASS        9540     9.6    13.5    71      9.5    15.2    63 
                                                -----                  -----
                Basin wide percent of average     91                     96 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    25.1    28.9    87     24.7    23.5   105 
 CASPER MTN.              7900    11.2    18.0    62     15.0    18.5    81 
 DEADMAN HILL            10220    17.5    18.9    93     17.1    20.8    82 
 DEER PARK                9700      -M      -M      *    24.6      -M      *
 LAPRELE CREEK            8320     5.2     6.8    76     12.7    14.5    88 
 RENO HILL                8400    10.9    13.7    80     13.7    22.2    62 
 ROACH                    9700    15.9    18.1    88     19.5    25.5    76 
 SAND LAKE               10080    31.5    37.0    85     27.3    24.5   111 
 SOUTH PASS               9040    17.0    18.0    94     21.1    20.4   103 
 WINDY PEAK               7840     4.8     8.1    59     10.8    12.0    90 
                                                -----                  -----
                Basin wide percent of average     83                     89 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     5.3     5.6    95     17.5    18.3    96 
 DIVIDE PEAK              8800    18.4    19.6    94     22.4    27.0    83 
 OLD BATTLE              10000    35.6    37.9    94     38.8    35.3   110 
 SANDSTONE RS             8150     9.3    10.5    89     21.5    22.7    95 
 WHISKEY PARK             8950    29.4    29.7    99     31.1    33.6    93 
                                                -----                  -----
                Basin wide percent of average     95                     96 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    13.0    14.1    92     13.9    18.4    76 
 BLIND BULL SUM           8650    24.4    23.7   103     20.9    26.7    78 
 EAST RIM DIVIDE          7930    12.9    14.8    87     13.4    17.2    78 
 ELKHART PARK G.S.        9400    12.0    14.1    85     15.4    18.1    85 
 GROS VENTRE SUMMIT       8775    12.1    14.2    85     14.9    18.0    83 
 KENDALL R.S.             7740    10.0    10.9    92     16.6    17.5    95 
 LOOMIS PARK              8240      -M    15.3      *    19.1    21.3    90 
 NEW FORK LAKE            8340     8.9     9.3    96     12.6    16.3    77 
 SNIDER BASIN             8250    12.8    13.3    96     14.0    17.1    82 
 SPRING CREEK DIVIDE      9000    23.3    29.6    79     24.2    30.6    79 
 TRIPLE PEAK              8500    19.0    25.2    75     24.2    34.8    70 
                                                -----                  -----
                Basin wide percent of average     88                     80 


LOWER GREEN RIVER

 HAMS FORK                7840     6.2     5.7   109     13.1    15.1    87 
 HEWINTA                  9500    10.4     5.8   179     17.4    16.1   108 
 HICKERSON PARK           9150    12.9     3.4   379     15.4    12.1   127 
 HOLE-IN-ROCK             9150     9.1     2.8   325     13.4    12.1   111 
 INDIAN CREEK             9425    25.3    29.1    87     21.8    29.0    75 
 KELLEY R.S.              8180    14.1    15.3    92     18.4    21.2    87 
 STEEL CREEK PARK        10100    20.9    18.8   111     21.6    15.9   136 
                                                -----                  -----
                Basin wide percent of average    122                    100 


UPPER BEAR RIVER

 BUG LAKE                 7950    19.0    16.5   115     23.5    22.4   105 
 HAYDEN FORK              9400    12.6     7.1   177     23.6    22.7   104 
 KELLEY R.S.              8180    14.1    15.3    92     18.4    21.2    87 
 LILY LAKE                9050    13.6     9.2   148     20.7    17.8   116 
 MONTE CRISTO             8960    30.0    26.6   113     29.5    30.0    98 
 SALT RIVER SUMMIT        7600    12.8    11.2   114     20.2    19.1   106 
 TRIAL LAKE               9960    25.2    24.2   104     26.4    28.0    94 
                                                -----                  -----
                Basin wide percent of average    116                    101 

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


-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.