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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: MAY 16 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    13.9     4.5   309     39.0    26.5   147 
 COTTONWOOD CREEK         7600    21.1    13.2   160     39.8    29.6   134 
 GRANITE CREEK            6770    16.7     7.0   239     35.7    28.3   126 
 GRASSY LAKE              7265    33.8    26.3   129     61.3    44.0   139 
 GROS VENTRE SUMMIT       8775    16.9     9.5   178     23.2    19.1   121 
 LEWIS LAKE DIVIDE        7860    45.4    29.0   157     63.9    44.8   143 
 PHILLIPS BENCH           8200    36.4    24.8   147     51.0    35.3   144 
 SALT RIVER SUMMIT        7600     6.9      .0      *    26.7    20.3   132 
 SNAKE RIVER STATION      6920     6.3    10.8    58     40.9    30.9   132 
 SPRING CREEK DIVIDE      9000    30.1    25.6   118     37.4    32.3   116 
 THUMB DIVIDE             7980    17.7    10.5   169     37.1    24.8   150 
 TOGWOTEE PASS            9580    31.5    25.9   122     39.9    33.5   119 
 TWO OCEAN PLATEAU        9360    43.9    26.1   168       -M    36.5      *
 WILLOW CREEK             8450    34.9    27.3   128     53.5    38.0   141 
                                                -----                  -----
                Basin wide percent of average    145                    135 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275      -M    24.6      *    35.4    23.0   154 
 BLACK BEAR               7950      -M    36.4      *      -M    48.5      *
 CANYON                   7940    12.7     6.2   205     29.6    17.6   168 
 FISHER CREEK             9100    53.7    37.1   145       -M    44.5      *
 MADISON PLATEAU          7750    30.5    18.2   168     46.2    31.5   147 
 NORTHEAST ENTRANCE       7350      .7     2.5    28     23.3    15.2   153 
 PARKER PEAK              9400    33.0    22.5   147       -M    19.8      *
 SYLVAN LAKE              8420      -M    20.2      *    37.2    24.2   154 
 THUMB DIVIDE             7980    17.7    10.5   169     37.1    24.8   150 
 TWO OCEAN PLATEAU        9360    43.9    26.1   168       -M    36.5      *
 WHISKEY CREEK            6800    14.8     9.0   164     35.2    26.2   134 
 WHITE MILL               8700    37.7    24.6   153       -M    34.5      *
 WOLVERINE                7650      -M     2.8      *    19.2    16.6   116 
                                                -----                  -----
                Basin wide percent of average    156                    147 


WIND RIVER

 BURROUGHS CREEK          8750    17.5     6.6   265     29.0    20.9   139 
 CHRISTINA LAKE           9980    19.0    16.7   114     27.8    21.7   128 
 COLD SPRINGS             9630      -M     2.7      *    16.7    14.6   114 
 HOBBS PARK              10100    19.9    16.5   121     19.7    19.0   104 
 LITTLE WARM              9620    10.2     5.1   200     24.6    17.8   138 
 SOUTH PASS               9040    20.4    16.1   127     30.3    22.2   136 
 ST. LAWRENCE ALT         8620     2.7     2.3   117     16.4    13.6   121 
 TOGWOTEE PASS            9580    31.5    25.9   122     39.9    33.5   119 
 TOWNSEND CREEK           8700     5.8     5.8   100     18.4    17.0   108 
                                                -----                  -----
                Basin wide percent of average    134                    124 


BIGHORN BASIN

 BALD MTN.                9375    23.6    24.1    98     23.0    23.0   100 
 BEAR TRAP MEADOW         7900      .1     1.3     8     13.2    12.2   108 
 BLACKWATER               9780    39.7    24.4   163     34.4    22.2   155 
 BONE SPRINGS DIV         9350    20.3    16.1   126     21.4    20.1   106 
 EVENING STAR             9200    40.2    30.0   134     46.7    27.8   168 
 GRAVE SPRINGS            8550     7.4      -M      *    14.8    14.2   104 
 KIRWIN                   9550    11.7     9.8   119     20.4    14.7   139 
 LOST CREEK               8080    18.1    13.1   138     20.6    16.8   123 
 MARQUETTE                8760     9.7     7.4   131     16.4    15.3   107 
 MIDDLE POWDER            7760    12.5    13.3    94     19.0    16.4   116 
 OWL CREEK                8975      .2      .9    22      9.6     9.4   102 
 POWDER RIVER PASS        9480    13.0     5.9   220     18.0    16.4   110 
 SHELL CREEK              9580    16.1    16.7    96     19.6    17.8   110 
 SYLVAN LAKE              8420      -M    20.2      *    37.2    24.2   154 
 SYLVAN ROAD              8120      -M     3.8      *    30.3    20.1   151 
 TIMBER CREEK             7950      .1     2.4     4     11.5    11.8    97 
 YOUNTS PEAK              8350    21.5    15.4   140       -M    20.8      *
                                                -----                  -----
                Basin wide percent of average    125                    126 


SHOSHONE RIVER

 BLACKWATER               9780    39.7    24.4   163     34.4    22.2   155 
 EVENING STAR             9200    40.2    30.0   134     46.7    27.8   168 
 KIRWIN                   9550    11.7     9.8   119     20.4    14.7   139 
 MARQUETTE                8760     9.7     7.4   131     16.4    15.3   107 
 SYLVAN LAKE              8420      -M    20.2      *    37.2    24.2   154 
 SYLVAN ROAD              8120      -M     3.8      *    30.3    20.1   151 
 YOUNTS PEAK              8350    21.5    15.4   140       -M    20.8      *
                                                -----                  -----
                Basin wide percent of average    141                    149 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900      .1     1.3     8     13.2    12.2   108 
 BONE SPRINGS DIV         9350    20.3    16.1   126     21.4    20.1   106 
 BURGESS JUNCTION         7880    12.4    10.6   117     18.0    16.0   112 
 CLOUD PEAK RESERVOIR     9860    19.9    15.6   128     20.9    19.1   109 
 DOME LAKE                8880    11.6     9.9   117     19.8    18.2   109 
 GRAVE SPRINGS            8550     7.4      -M      *    14.8    14.2   104 
 HANSEN SAWMILL           8760      .0     3.8     0     12.2    11.6   105 
 LOST CREEK               8080    18.1    13.1   138     20.6    16.8   123 
 MIDDLE POWDER            7760    12.5    13.3    94     19.0    16.4   116 
 POWDER RIVER PASS        9480    13.0     5.9   220     18.0    16.4   110 
 SUCKER CREEK             8880    15.7    10.1   155     21.9    18.4   119 
 TIE CREEK                6870      .2      -M      *    17.9    15.3   117 
                                                -----                  -----
                Basin wide percent of average    124                    112 


BELLE FOURCHE

 BLIND PARK               6890      -M     4.3      *    19.8    15.9   125 
 NORTH RAPID CREEK        6130      .7      -M      *    18.6      -M      *
 WARREN PEAK              6520    11.7     4.3   272       -M    11.8      *
                                                -----                  -----
                Basin wide percent of average    272*                   125*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    15.0    13.4   112     38.6    29.5   131 
 DIVIDE PEAK              8800    15.8    11.9   133     29.8    29.0   103 
 ELK RIVER                8700    12.9     8.0   161     30.8    23.3   132 
 JOE WRIGHT              10120    32.6    23.3   140     37.9    32.5   117 
 NORTH FRENCH CREEK      10100    34.9    26.3   133     36.5    30.1   121 
 OLD BATTLE              10000    44.8    36.1   124     46.6    37.6   124 
 SOUTH BRUSH CREEK        8400      .0     5.6     0     21.8    21.9   100 
 TOWER                   10500    65.3    50.4   130     59.7    46.2   129 
 WEBBER SPRINGS           9200    26.2    19.9   132     42.6    32.1   133 
 WILLOW CREEK PASS        9540    19.0    10.2   186     20.5    16.8   122 
                                                -----                  -----
                Basin wide percent of average    130                    122 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    31.2    24.2   129     34.9    25.4   137 
 CASPER MTN.              7900    18.2    10.7   170     27.5    20.8   132 
 CHRISTINA LAKE           9980    19.0    16.7   114     27.8    21.7   128 
 DEADMAN HILL            10220    19.7    18.1   109     24.8    22.8   109 
 LAPRELE CREEK            8320     1.8     3.3    55     18.4    16.3   113 
 RENO HILL                8400    17.1     8.3   206     26.8    23.3   115 
 ROACH                    9700    21.0    15.5   135     28.1    27.9   101 
 SAND LAKE               10080    44.7    34.8   128     36.8    26.5   139 
 SOUTH PASS               9040    20.4    16.1   127     30.3    22.2   136 
 WINDY PEAK               7840      .2     3.3     6     14.5    13.9   104 
                                                -----                  -----
                Basin wide percent of average    128                    122 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .3      .0      *      -M    19.7      *
 DIVIDE PEAK              8800    15.8    11.9   133     29.8    29.0   103 
 OLD BATTLE              10000    44.8    36.1   124     46.6    37.6   124 
 SANDSTONE RS             8150      .0     2.2     0     26.4    24.5   108 
 WHISKEY PARK             8950    36.7    24.5   150     41.1    36.1   114 
                                                -----                  -----
                Basin wide percent of average    130                    113 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100     7.6     9.2    83     19.8    19.5   102 
 BLIND BULL SUM           8650    45.9    22.0   209     37.1    28.2   132 
 EAST RIM DIVIDE          7930     9.8    12.4    79     18.7    18.2   103 
 ELKHART PARK G.S.        9400    10.6     9.5   112     21.1    19.2   110 
 GROS VENTRE SUMMIT       8775    16.9     9.5   178     23.2    19.1   121 
 KENDALL R.S.             7740     8.0      .0      *    25.0    18.6   134 
 LOOMIS PARK              8240      -M    10.6      *    29.8    22.6   132 
 NEW FORK LAKE            8340     1.4     5.8    24     16.1    17.3    93 
 SNIDER BASIN             8250    10.0     8.0   125     21.8    18.2   120 
 SPRING CREEK DIVIDE      9000    30.1    25.6   118     37.4    32.3   116 
 TRIPLE PEAK              8500    24.1    20.8   116     43.9    36.8   119 
                                                -----                  -----
                Basin wide percent of average    127                    118 


LOWER GREEN RIVER

 HAMS FORK                7840      .0      .0   100*    19.0    16.0   119 
 HEWINTA                  9500      .0      .0   100*    17.1    17.6    97 
 HICKERSON PARK           9150      .0      .6     0*    12.4    13.7    91 
 HOLE-IN-ROCK             9150      .1      .5    20*    12.8    13.7    93 
 INDIAN CREEK             9425    34.1    24.5   139     37.1    30.7   121 
 KELLEY R.S.              8180    11.6     9.4   123     35.2    22.5   156 
 STEEL CREEK PARK        10100    16.1    16.3    99     19.9    17.9   111 
                                                -----                  -----
                Basin wide percent of average    121*                   116 


UPPER BEAR RIVER

 BUG LAKE                 7950    22.1     9.6   230     34.2    23.7   144 
 HAYDEN FORK              9400     3.0      .7   429*    29.9    24.5   122 
 KELLEY R.S.              8180    11.6     9.4   123     35.2    22.5   156 
 LILY LAKE                9050      .7     5.4    13     23.8    19.5   122 
 MONTE CRISTO             8960    31.0    21.2   146     39.2    31.9   123 
 SALT RIVER SUMMIT        7600     6.9      .0      *    26.7    20.3   132 
 TRIAL LAKE               9960    27.7    20.5   135     38.9    29.9   130 
                                                -----                  -----
                Basin wide percent of average    144                    132 

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


-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.