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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 SATURDAY: MAY 17 , 1997 
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    12.8     4.2   305     39.0    26.6   147 
 COTTONWOOD CREEK         7600    20.1    12.4   162     39.8    29.7   134 
 GRANITE CREEK            6770    15.9     6.6   241     35.7    28.3   126 
 GRASSY LAKE              7265    32.5    25.4   128     61.6    44.2   139 
 GROS VENTRE SUMMIT       8775    15.9     8.9   179     23.2    19.1   121 
 LEWIS LAKE DIVIDE        7860    44.1    28.4   155     64.1    44.9   143 
 PHILLIPS BENCH           8200      -M    24.4      *      -M    35.4      *
 SALT RIVER SUMMIT        7600     5.7      .0      *    26.9    20.3   133 
 SNAKE RIVER STATION      6920     4.6    10.1    46     41.1    31.0   133 
 SPRING CREEK DIVIDE      9000    29.3    25.2   116     37.4    32.3   116 
 THUMB DIVIDE             7980    16.7     9.9   169     37.4    24.9   150 
 TOGWOTEE PASS            9580    30.0    25.7   117     40.0    33.7   119 
 TWO OCEAN PLATEAU        9360    43.4    25.9   168       -M    36.6      *
 WILLOW CREEK             8450    33.6    26.8   125     53.6    38.2   140 
                                                -----                  -----
                Basin wide percent of average    143                    134 


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275      -M    24.3      *    35.4    23.2   153 
 BLACK BEAR               7950      -M    35.9      *      -M    48.6      *
 CANYON                   7940    12.0     5.9   203     29.7    17.6   169 
 FISHER CREEK             9100      -M    36.7      *      -M    44.7      *
 MADISON PLATEAU          7750    29.4    17.6   167     46.4    31.7   146 
 NORTHEAST ENTRANCE       7350     1.1     2.3    48     23.4    15.2   154 
 PARKER PEAK              9400    32.4    22.2   146       -M    19.9      *
 SYLVAN LAKE              8420      -M    19.8      *    37.4    24.4   153 
 THUMB DIVIDE             7980    16.7     9.9   169     37.4    24.9   150 
 TWO OCEAN PLATEAU        9360    43.4    25.9   168       -M    36.6      *
 WHISKEY CREEK            6800      -M     8.5      *      -M    26.3      *
 WHITE MILL               8700    37.2    24.3   153       -M    34.7      *
 WOLVERINE                7650      -M     2.6      *    19.1    16.7   114 
                                                -----                  -----
                Basin wide percent of average    159                    149 


WIND RIVER

 BURROUGHS CREEK          8750    16.9     6.3   268     29.1    21.0   139 
 CHRISTINA LAKE           9980    18.5    16.3   113     27.9    21.9   127 
 COLD SPRINGS             9630      -M     2.5      *    16.8    14.6   115 
 HOBBS PARK              10100    19.3    16.0   121     19.7    19.2   103 
 LITTLE WARM              9620     9.2     4.8   192     24.7    17.8   139 
 SOUTH PASS               9040      -M    15.7      *      -M    22.4      *
 ST. LAWRENCE ALT         8620     1.6     2.1    76     16.4    13.7   120 
 TOGWOTEE PASS            9580    30.0    25.7   117     40.0    33.7   119 
 TOWNSEND CREEK           8700     4.7     5.6    84     18.4    17.1   108 
                                                -----                  -----
                Basin wide percent of average    130                    121 


BIGHORN BASIN

 BALD MTN.                9375    22.5    23.7    95     23.0    23.1   100 
 BEAR TRAP MEADOW         7900      .1     1.2     8     13.2    12.3   107 
 BLACKWATER               9780    39.1    24.1   162     34.4    22.4   154 
 BONE SPRINGS DIV         9350    19.8    15.6   127     21.4    20.2   106 
 EVENING STAR             9200    39.5    29.7   133     46.7    28.0   167 
 GRAVE SPRINGS            8550     6.0      -M      *    14.8    14.4   103 
 KIRWIN                   9550    10.8     9.5   114     20.5    14.8   139 
 LOST CREEK               8080    17.5    12.7   138     20.6    17.0   121 
 MARQUETTE                8760     9.2     7.2   128     16.4    15.5   106 
 MIDDLE POWDER            7760    11.5    12.6    91     19.0    16.6   114 
 OWL CREEK                8975      .2      .9    22      9.6     9.4   102 
 POWDER RIVER PASS        9480    12.2     5.6   218     18.3    16.5   111 
 SHELL CREEK              9580    16.3    16.3   100     19.7    17.9   110 
 SYLVAN LAKE              8420      -M    19.8      *    37.4    24.4   153 
 SYLVAN ROAD              8120     3.1     3.6    86     30.4    20.3   150 
 TIMBER CREEK             7950      .2     2.2     9     11.5    12.0    96 
 YOUNTS PEAK              8350    20.9    15.0   139       -M    20.8      *
                                                -----                  -----
                Basin wide percent of average    124                    125 


SHOSHONE RIVER

 BLACKWATER               9780    39.1    24.1   162     34.4    22.4   154 
 EVENING STAR             9200    39.5    29.7   133     46.7    28.0   167 
 KIRWIN                   9550    10.8     9.5   114     20.5    14.8   139 
 MARQUETTE                8760     9.2     7.2   128     16.4    15.5   106 
 SYLVAN LAKE              8420      -M    19.8      *    37.4    24.4   153 
 SYLVAN ROAD              8120     3.1     3.6    86     30.4    20.3   150 
 YOUNTS PEAK              8350    20.9    15.0   139       -M    20.8      *
                                                -----                  -----
                Basin wide percent of average    138                    148 


POWDER-TONGUE

 BEAR TRAP MEADOW         7900      .1     1.2     8     13.2    12.3   107 
 BONE SPRINGS DIV         9350    19.8    15.6   127     21.4    20.2   106 
 BURGESS JUNCTION         7880    11.7    10.1   116     18.1    16.1   112 
 CLOUD PEAK RESERVOIR     9860    18.8    15.2   124     20.9    19.3   108 
 DOME LAKE                8880    10.6     9.5   112     19.8    18.4   108 
 GRAVE SPRINGS            8550     6.0      -M      *    14.8    14.4   103 
 HANSEN SAWMILL           8760      -M     3.6      *      -M    11.7      *
 LOST CREEK               8080    17.5    12.7   138     20.6    17.0   121 
 MIDDLE POWDER            7760    11.5    12.6    91     19.0    16.6   114 
 POWDER RIVER PASS        9480    12.2     5.6   218     18.3    16.5   111 
 SUCKER CREEK             8880    14.9     9.7   154     22.0    18.6   118 
 TIE CREEK                6870      .2      -M      *    17.9    15.5   115 
                                                -----                  -----
                Basin wide percent of average    127                    111 


BELLE FOURCHE

 BLIND PARK               6890      .0     4.1     0     19.9    16.1   124 
 NORTH RAPID CREEK        6130      .1      -M      *    18.6      -M      *
 WARREN PEAK              6520     9.9     4.1   241       -M    11.8      *
                                                -----                  -----
                Basin wide percent of average    121                    124*


UPPER N. PLATTE RIVER

 COLUMBINE                9400    13.3    12.8   104     38.6    29.5   131 
 DIVIDE PEAK              8800    14.3    11.4   125     29.7    29.1   102 
 ELK RIVER                8700    11.4     7.5   152     30.8    23.3   132 
 JOE WRIGHT              10120    31.4    22.9   137     37.9    32.7   116 
 NORTH FRENCH CREEK      10100    33.8    25.9   131     36.6    30.2   121 
 OLD BATTLE              10000    44.5    35.4   126     46.7    37.7   124 
 SOUTH BRUSH CREEK        8400      .0     5.3     0     21.8    22.0    99 
 TOWER                   10500      -M    50.0      *      -M    46.4      *
 WEBBER SPRINGS           9200    25.4    19.3   132     42.7    32.2   133 
 WILLOW CREEK PASS        9540      -M     9.7      *      -M    16.9      *
                                                -----                  -----
                Basin wide percent of average    124                    120 


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    30.0    23.5   128     35.0    25.5   137 
 CASPER MTN.              7900    16.7    10.3   162     27.5    20.9   132 
 CHRISTINA LAKE           9980    18.5    16.3   113     27.9    21.9   127 
 DEADMAN HILL            10220    19.1    17.6   109     24.8    22.9   108 
 LAPRELE CREEK            8320      .0     3.1     0     18.6    16.5   113 
 RENO HILL                8400    16.0     7.9   203     26.9    23.4   115 
 ROACH                    9700    19.9    15.0   133     28.1    28.1   100 
 SAND LAKE               10080    43.9    34.1   129     36.8    26.7   138 
 SOUTH PASS               9040      -M    15.7      *      -M    22.4      *
 WINDY PEAK               7840      .2     3.1     6     14.5    14.0   104 
                                                -----                  -----
                Basin wide percent of average    126                    120 


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .3      .0      *      -M    19.7      *
 DIVIDE PEAK              8800    14.3    11.4   125     29.7    29.1   102 
 OLD BATTLE              10000    44.5    35.4   126     46.7    37.7   124 
 SANDSTONE RS             8150      .0     2.0     0     26.3    24.5   107 
 WHISKEY PARK             8950    35.2    23.7   149     41.2    36.2   114 
                                                -----                  -----
                Basin wide percent of average    130                    113 


UPPER GREEN RIVER

 BIG SANDY OPENING        9100     6.6     8.6    77     19.9    19.6   102 
 BLIND BULL SUM           8650    46.1    21.7   212     37.1    28.2   132 
 EAST RIM DIVIDE          7930     9.0    12.0    75     18.7    18.3   102 
 ELKHART PARK G.S.        9400    10.1     9.2   110     21.2    19.2   110 
 GROS VENTRE SUMMIT       8775    15.9     8.9   179     23.2    19.1   121 
 KENDALL R.S.             7740     6.9      .0      *    25.1    18.7   134 
 LOOMIS PARK              8240      -M    10.0      *    29.9    22.6   132 
 NEW FORK LAKE            8340      .7     5.5    13     16.3    17.4    94 
 SNIDER BASIN             8250     8.8     7.5   117     21.8    18.2   120 
 SPRING CREEK DIVIDE      9000    29.3    25.2   116     37.4    32.3   116 
 TRIPLE PEAK              8500    23.0    20.4   113     44.0    37.0   119 
                                                -----                  -----
                Basin wide percent of average    126                    118 


LOWER GREEN RIVER

 HAMS FORK                7840      .0      .0   100*    19.1    16.1   119 
 HEWINTA                  9500      .0      .0   100*    17.1    17.7    97 
 HICKERSON PARK           9150      .0      .5     0*    12.5    13.8    91 
 HOLE-IN-ROCK             9150      .1      .5    20*    12.9    13.8    93 
 INDIAN CREEK             9425    33.0    24.0   138     37.1    30.8   120 
 KELLEY R.S.              8180    10.3     8.8   117     35.2    22.6   156 
 STEEL CREEK PARK        10100    15.4    16.1    96     19.9    18.0   111 
                                                -----                  -----
                Basin wide percent of average    118*                   116 


UPPER BEAR RIVER

 BUG LAKE                 7950    20.8     9.2   226     34.2    23.8   144 
 HAYDEN FORK              9400     2.0      .6   333*    29.9    24.7   121 
 KELLEY R.S.              8180    10.3     8.8   117     35.2    22.6   156 
 LILY LAKE                9050      .3     5.1     6     23.8    19.6   121 
 MONTE CRISTO             8960    29.5    20.5   144     39.3    32.1   122 
 SALT RIVER SUMMIT        7600     5.7      .0      *    26.9    20.3   133 
 TRIAL LAKE               9960    26.8    19.9   135     38.9    30.1   129 
                                                -----                  -----
                Basin wide percent of average    140                    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.