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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 FRIDAY: APRIL 25 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    27.8    12.7   219     37.6    24.7   152 
 COTTONWOOD CREEK         7600    31.5    21.2   149     36.4    27.7   131 
 GRANITE CREEK            6770    26.0    14.7   177     34.5    26.2   132 
 GRASSY LAKE              7265    46.4    35.4   131     58.2    41.1   142 
 GROS VENTRE SUMMIT       8775    23.3    14.7   159     22.5    17.7   127 
 LEWIS LAKE DIVIDE        7860    51.5    35.3   146     60.8    41.8   145 
 PHILLIPS BENCH           8200    41.1    30.0   137     49.2    33.0   149 
 SALT RIVER SUMMIT        7600    20.8    11.9   175     25.5    18.8   136 
 SNAKE RIVER STATION      6920    23.8    17.2   138     38.8    28.9   134 
 SPRING CREEK DIVIDE      9000    40.7    29.5   138     35.6    30.3   117 
 THUMB DIVIDE             7980    31.3    16.0   196     35.2    23.1   152 
 TOGWOTEE PASS            9580    36.5    27.8   131     36.7    31.3   117 
 TWO OCEAN PLATEAU        9360    48.3    27.2   178       -M    34.0      *
 WILLOW CREEK             8450    42.5    31.8   134     47.1    35.5   133 
                                                -----                  -----
                Basin wide percent of average    151                    136 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275      -M    25.8      *    32.2    20.6   156 
 BLACK BEAR               7950      -M    40.0      *      -M    45.5      *
 CANYON                   7940    22.3    11.9   187       -M    15.9      *
 FISHER CREEK             9100    58.8    38.4   153       -M    41.2      *
 MADISON PLATEAU          7750    44.2    24.5   180     44.3    29.3   151 
 NORTHEAST ENTRANCE       7350     9.8     7.1   138     21.2    13.5   157 
 PARKER PEAK              9400    34.7    23.5   148       -M    17.7      *
 SYLVAN LAKE              8420    31.5    23.8   132     34.9    21.7   161 
 THUMB DIVIDE             7980    31.3    16.0   196     35.2    23.1   152 
 TWO OCEAN PLATEAU        9360    48.3    27.2   178       -M    34.0      *
 WHISKEY CREEK            6800    24.1    16.3   148     33.5    24.4   137 
 WHITE MILL               8700    40.9    26.1   157       -M    31.8      *
 WOLVERINE                7650    12.5     9.5   132     16.9    14.7   115 
                                                -----                  -----
                Basin wide percent of average    160                    148 


WIND RIVER

 BURROUGHS CREEK          8750    24.6    13.8   178     27.8    18.9   147 
 CHRISTINA LAKE           9980    22.3    17.5   127       -M    19.4      *
 COLD SPRINGS             9630      -M     7.5      *      -M    12.6      *
 HOBBS PARK              10100      -M    17.4      *    17.8    16.7   107 
 LITTLE WARM              9620      -M    11.6      *    23.2    15.7   148 
 SOUTH PASS               9040      -M    17.9      *      -M    19.9      *
 ST. LAWRENCE ALT         8620      -M     6.0      *      -M    12.0      *
 TOGWOTEE PASS            9580    36.5    27.8   131     36.7    31.3   117 
 TOWNSEND CREEK           8700      -M     9.8      *      -M    14.9      *
                                                -----                  -----
                Basin wide percent of average    141*                   128*


BIGHORN BASIN

 BALD MTN.                9375    24.5    23.4   105     20.7    20.1   103 
 BEAR TRAP MEADOW         7900     5.9     5.2   113     11.3    10.1   112 
 BLACKWATER               9780    41.4    25.3   164     32.2    20.1   160 
 BONE SPRINGS DIV         9350    20.8    18.3   114     19.5    17.5   111 
 EVENING STAR             9200    43.7    30.2   145     43.4    25.3   172 
 GRAVE SPRINGS            8550    12.9      -M      *    13.2    11.8   112 
 KIRWIN                   9550    16.9    11.5   147     18.3    12.8   143 
 LOST CREEK               8080    19.1    15.6   122     18.1    14.4   126 
 MARQUETTE                8760    13.2     8.6   153     14.2    12.7   112 
 MIDDLE POWDER            7760    18.7    14.4   130     16.8    14.2   118 
 OWL CREEK                8975     7.4     3.9   190      8.0     7.7   104 
 POWDER RIVER PASS        9480      -M    10.9      *    15.6    14.1   111 
 SHELL CREEK              9580    19.8    16.7   119     16.9    15.3   110 
 SYLVAN LAKE              8420    31.5    23.8   132     34.9    21.7   161 
 SYLVAN ROAD              8120    17.8     9.0   198     28.6    18.1   158 
 TIMBER CREEK             7950     7.0     6.2   113      9.7     9.4   103 
 YOUNTS PEAK              8350    24.6    18.3   134       -M    18.8      *
                                                -----                  -----
                Basin wide percent of average    136                    131 


SHOSHONE RIVER

 BLACKWATER               9780    41.4    25.3   164     32.2    20.1   160 
 EVENING STAR             9200    43.7    30.2   145     43.4    25.3   172 
 KIRWIN                   9550    16.9    11.5   147     18.3    12.8   143 
 MARQUETTE                8760    13.2     8.6   153     14.2    12.7   112 
 SYLVAN LAKE              8420    31.5    23.8   132     34.9    21.7   161 
 SYLVAN ROAD              8120    17.8     9.0   198     28.6    18.1   158 
 YOUNTS PEAK              8350    24.6    18.3   134       -M    18.8      *
                                                -----                  -----
                Basin wide percent of average    149                    155 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900     5.9     5.2   113     11.3    10.1   112 
 BONE SPRINGS DIV         9350    20.8    18.3   114     19.5    17.5   111 
 BURGESS JUNCTION         7880    16.0    13.3   120     16.0    13.8   116 
 CLOUD PEAK RESERVOIR     9860    20.4    17.4   117     18.1    16.3   111 
 DOME LAKE                8880    15.4    14.9   103     16.9    15.8   107 
 GRAVE SPRINGS            8550    12.9      -M      *    13.2    11.8   112 
 HANSEN SAWMILL           8760     5.6     7.2    78     10.0     9.8   102 
 LOST CREEK               8080    19.1    15.6   122     18.1    14.4   126 
 MIDDLE POWDER            7760    18.7    14.4   130     16.8    14.2   118 
 POWDER RIVER PASS        9480      -M    10.9      *    15.6    14.1   111 
 SUCKER CREEK             8880    17.3    13.6   127     18.4    15.8   116 
 TIE CREEK                6870     6.8      -M      *    14.9    13.2   113 
                                                -----                  -----
                Basin wide percent of average    116                    113 


BELLE FOURCHE

 BLIND PARK               6890     8.3    10.3    81     17.8    13.0   137 
 NORTH RAPID CREEK        6130    10.7      -M      *    16.3      -M      *
 WARREN PEAK              6520    20.3    10.3   197       -M     9.8      *
                                                -----                  -----
                Basin wide percent of average    139                    137*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    28.8    23.0   125     35.3    27.4   129 
 DIVIDE PEAK              8800    27.6    20.2   137     27.1    26.4   103 
 ELK RIVER                8700    27.4    17.8   154     28.3    21.5   132 
 JOE WRIGHT              10120    32.4    24.5   132     34.2    29.2   117 
 NORTH FRENCH CREEK      10100    38.0    28.9   131     32.7    27.1   121 
 OLD BATTLE              10000    44.5    37.3   119     41.8    34.6   121 
 SOUTH BRUSH CREEK        8400    11.7    11.5   102     19.4    19.7    98 
 TOWER                   10500    59.2    50.3   118     54.5    41.8   130 
 WEBBER SPRINGS           9200    32.0    27.0   119     39.0    29.5   132 
 WILLOW CREEK PASS        9540    22.7    13.5   168     18.3    14.8   124 
                                                -----                  -----
                Basin wide percent of average    128                    122 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    40.5    28.9   140     32.2    22.9   141 
 CASPER MTN.              7900    23.5    18.3   128     23.1    17.8   130 
 CHRISTINA LAKE           9980    22.3    17.5   127       -M    19.4      *
 DEADMAN HILL            10220    21.8    18.6   117     22.4    20.2   111 
 LAPRELE CREEK            8320    13.8     7.7   179     16.3    14.1   116 
 RENO HILL                8400    24.3    14.2   171     23.2    21.8   106 
 ROACH                    9700    25.7    18.1   142     25.2    24.9   101 
 SAND LAKE               10080    42.9    36.6   117     33.6    23.9   141 
 SOUTH PASS               9040      -M    17.9      *      -M    19.9      *
 WINDY PEAK               7840     8.5     8.4   101     13.3    11.7   114 
                                                -----                  -----
                Basin wide percent of average    133                    120 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     9.2     7.1   130     30.3    17.9   169 
 DIVIDE PEAK              8800    27.6    20.2   137     27.1    26.4   103 
 OLD BATTLE              10000    44.5    37.3   119     41.8    34.6   121 
 SANDSTONE RS             8150    15.2    11.9   128     23.5    22.1   106 
 WHISKEY PARK             8950    41.0    30.0   137     36.7    32.8   112 
                                                -----                  -----
                Basin wide percent of average    129                    119 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100    18.9    14.5   130     18.2    18.1   101 
 BLIND BULL SUM           8650    43.1    25.8   167     35.3    26.4   134 
 EAST RIM DIVIDE          7930    17.1    14.9   115     18.2    16.9   108 
 ELKHART PARK G.S.        9400    18.7    14.4   130     19.5    17.8   110 
 GROS VENTRE SUMMIT       8775    23.3    14.7   159     22.5    17.7   127 
 KENDALL R.S.             7740    20.4    11.5   177     24.6    17.3   142 
 LOOMIS PARK              8240      -M    15.8      *    28.5    21.0   136 
 NEW FORK LAKE            8340    13.4     9.7   138     14.0    16.1    87 
 SNIDER BASIN             8250    22.0    13.9   158     21.1    16.9   125 
 SPRING CREEK DIVIDE      9000    40.7    29.5   138     35.6    30.3   117 
 TRIPLE PEAK              8500    34.8    25.7   135     41.7    34.3   122 
                                                -----                  -----
                Basin wide percent of average    145                    120 


LOWER GREEN RIVER

 HAMS FORK                7840    13.8     5.7   242     17.8    14.9   119 
 HEWINTA                  9500    10.0     6.7   149     16.0    15.7   102 
 HICKERSON PARK           9150    11.7     4.3   272     12.0    11.7   103 
 HOLE-IN-ROCK             9150     9.6     3.8   253     12.3    11.7   105 
 INDIAN CREEK             9425    42.3    29.5   143     34.8    28.7   121 
 KELLEY R.S.              8180    23.4    16.0   146     32.7    20.9   156 
 STEEL CREEK PARK        10100    18.8    18.5   102     18.3    15.4   119 
                                                -----                  -----
                Basin wide percent of average    153                    121 


UPPER BEAR RIVER

 BUG LAKE                 7950    34.2    17.5   195     32.8    22.0   149 
 HAYDEN FORK              9400    15.7     8.2   191     27.6    22.2   124 
 KELLEY R.S.              8180    23.4    16.0   146     32.7    20.9   156 
 LILY LAKE                9050    17.4    10.3   169     21.7    17.4   125 
 MONTE CRISTO             8960    41.2    27.4   150     36.0    29.4   122 
 SALT RIVER SUMMIT        7600    20.8    11.9   175     25.5    18.8   136 
 TRIAL LAKE               9960    36.9    24.8   149     36.6    27.4   134 
                                                -----                  -----
                Basin wide percent of average    163                    135 

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


-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.