B A S I N   S U M M A R Y  O F
                        S N O W    C O U R S E    D A T A

                                    JUNE   1997


     SNOW COURSE         ELEVATION    DATE    SNOW   WATER     LAST  AVERAGE 
                                             DEPTH  CONTENT    YEAR   1961-90
--------------------------------------------------------------------------------

    SNAKE RIVER BASIN                                                    
     BASE CAMP PILLOW       7030    6/01/97   ---       .0      1.9       .0
     BLACK BEAR PILLOW      7950    6/01/97   ---     50.2     46.1     27.5
     BLIND BULL PILLOW      8900    6/01/97   ---     37.2     39.4     16.4
     COTTONWOOD CR PILLOW   7700    6/01/97   ---      6.5     14.6       .0
     DARBY CANYON           8250    5/30/97    23     12.0       --     12.7
     EAST RIM DIV PILLOW    7930    6/01/97   ---       .0      6.8      7.0
     GRASSY LAKE PILLOW     7270    6/01/97   ---     17.5     19.6     12.0
     GROS VENTRE PILLOW     8750    6/01/97   ---      4.1      8.5       .0
     JACKPINE CREEK         7350    5/30/97     4      2.4       --       --
     LEWIS LAKE PILLOW      7850    6/01/97   ---     26.4     31.2     19.8
     PHILLIPS BENCH PILL.   8200    6/01/97   ---     24.0     27.9     17.6
     SALT RIVER PILLOW      7600    6/01/97   ---       .0       .0       .0
     SPRING CRK. PILLOW     9000    6/01/97   ---     18.3     31.5     19.0
     TOGWOTEE PASS PILLOW   9580    6/01/97   ---     25.0     34.3     23.6
     TWO OCEAN PILLOW       9240    6/01/97   ---     39.7     43.6     22.5
     WILLOW CREEK PILLOW    8450    6/01/97   ---     19.4     20.9     19.2

    UPPER YELLOWSTONE & MADISON RIVER BASINS                             
     BLACK BEAR PILLOW      7950    6/01/97   ---     50.2     46.1     27.5
     CANYON PILLOW          8090    6/01/97   ---       .1      8.2      1.4
     FISHER CREEK PILLOW    9100    6/01/97   ---     44.5     41.5     31.7
     MADISON PLT PILLOW     7750    6/01/97   ---     14.7     20.5      7.5
     N.E. ENTRANCE PILLOW   7350    6/01/97   ---       .0       .0       .2
     PARKERS PEAK PILLOW    9400    6/01/97   ---     24.4     34.4     18.6
     SYLVAN LAKE PILLOW     8420    6/01/97   ---     11.5       --     14.1
     TWO OCEAN PILLOW       9240    6/01/97   ---     39.7     43.6     22.5
     WEST YELL'ST PILLOW    6700    6/01/97   ---       .0       .0       .0
     WEST YELLOWSTONE       6700    6/01/97     0       .0       .0       .0

    WIND RIVER BASIN                                                     
     BURROUGHS CRK PILLOW   8750    6/01/97   ---      2.6     16.4      2.0
     CHRISTINA LK PILLOW    9980    6/01/97   ---     11.2     12.1      9.9
     COLD SPRINGS PILLOW    9630    6/01/97   ---       .0       .0       .3
     HOBBS PARK PILLOW     10100    6/01/97   ---     12.6     16.4      9.3
     LITTLE WARM PILLOW     9370    6/01/97   ---       .0      8.3       .7
     SOUTH PASS PILLOW      9040    6/01/97   ---      8.2      8.7     10.0
     ST LAWRENCE ALT PILL   8620    6/01/97   ---       .0       .0       .1
     TOGWOTEE PASS PILLOW   9580    6/01/97   ---     25.0     34.3     23.6
     TOWNSEND CRK PILLOW    8700    6/01/97   ---       .0       .0      1.8
     YOUNTS PEAK PILLOW     8350    6/01/97   ---      8.9     16.2      9.1

    BIG HORN RIVER BASIN                                                 
     BALD MOUNTAIN PILLOW   9380    6/01/97   ---     16.4     23.4     18.5
     BONE SPGS. PILLOW      9350    6/01/97   ---      9.6     19.6      8.1
     KIRWIN PILLOW          9550    6/01/97   ---       .3     16.5      5.1
     LOST CREEK PILLOW      8080    6/01/97   ---      5.9      9.4      5.8
     MIDDLE POWDER PILLOW   7760    6/01/97   ---       .0      5.9      2.5
     OWL CREEK PILLOW       8980    6/01/97   ---       .0       .5       .1
     POWDER RVR.PASS PILL   9480    6/01/97   ---      4.2      9.3      1.3
     SHELL CREEK PILLOW     9580    6/01/97   ---     11.2     15.2     11.2
     TIMBER CREEK PILLOW    7950    6/01/97   ---       .0       .0       .2

    SHOSHONE & CLARKS FORK RIVER BASINS                                  
     BEARTOOTH LK. PILLOW   9280    6/01/97   ---     31.2     35.9     19.4
     BLACKWATER PILLOW      9780    6/01/97   ---     31.5     41.5     18.8
     FISHER CREEK PILLOW    9100    6/01/97   ---     44.5     41.5     31.7
     EVENING STAR PILLOW    9200    6/01/97   ---     31.1     42.4     25.5
     MARQUETTE PILLOW       8760    6/01/97   ---       .0      8.5      4.1
     PARKERS PEAK PILLOW    9400    6/01/97   ---     24.4     34.4     18.6
     N.E. ENTRANCE PILLOW   7350    6/01/97   ---       .0       .0       .2
     PARKERS PEAK PILLOW    9400    6/01/97   ---     24.4     34.4     18.6
     SYLVAN ROAD PILLOW     7120    6/01/97   ---       .0       .7      1.0
     WHITE MILL PILLOW      8700    6/01/97   ---     28.9     37.0     19.4
     WOLVERINE PILLOW       7650    6/01/97   ---       .0       .0       .0
     YOUNTS PEAK PILLOW     8350    6/01/97   ---      8.9     16.2      9.1

    POWDER & TONGUE RIVER BASINS                                         
     BEAR TRAP PILLOW       8200    6/01/97   ---       .0       .0       .0
     BONE SPGS. PILLOW      9350    6/01/97   ---      9.6     19.6      8.1
     BURGESS JCT. PILLOW    7880    6/01/97   ---      1.9      6.4      2.3
     CLOUD PEAK PILLOW      9850    6/01/97   ---     12.0     16.9      8.3
     DOME LAKE PILLOW       8880    6/01/97   ---       .4      4.7      3.9
     HANSEN S.M. PILLOW     8360    6/01/97   ---       .0       .0       .8
     LOST CREEK PILLOW      8080    6/01/97   ---      5.9      9.4      5.8
     MIDDLE POWDER PILLOW   7760    6/01/97   ---       .0      5.9      2.5
     POWDER RVR.PASS PILL   9480    6/01/97   ---      4.2      9.3      1.3
     SUCKER CREEK PILLOW    8880    6/01/97   ---      7.0      8.5      4.0

    BELLE FOURCHE & CHEYENNE RIVER BASINS                                

     BLIND PARK PILLOW      6870    6/01/97   ---       .0       .0       .0
     NORTH RAPID CK PILL.   6130    6/01/97   ---       .0       --    999.9
     WARREN PEAK PILLOW     6520    6/01/97   ---       .0       .0       .1

    UPPER NORTH PLATTE BASIN                                             
     DIVIDE PEAK PILLOW     8860    6/01/97   ---      1.0       .0      2.9
     JOE WRIGHT SNOTEL     10000    6/01/97   ---     20.6     22.8     17.1
     NORTH FRENCH PILLOW   10130    6/01/97   ---     26.6     35.4     20.2
     OLD BATTLE PILLOW      9920    6/01/97   ---     36.6     29.4     24.0
     ROACH SNOTEL           9400    6/01/97   ---      8.1      4.7      7.5
     SAND LAKE PILLOW      10050    6/01/97   ---     33.0     32.3     24.6
     SOUTH BRUSH PILLOW     8440    6/01/97   ---       .0       .0      1.0
     WEBBER SPRING PILLOW   9250    6/01/97   ---     12.2      6.2     10.3
     WILLOW CK PS SNOTEL    9500    6/01/97   ---      7.0       .0      2.2

    LOWER NORTH PLATTE, SWEETWATER & LARAMIE RIVER BASINS                
     BROOKLYN LK. PILLOW   10220    6/01/97   ---     18.2     19.5     12.8
     CASPER MTN. PILLOW     7850    6/01/97   ---     23.0      2.0      3.5
     CHRISTINA LK PILLOW    9980    6/01/97   ---     11.2     12.1      9.9
     DEADMAN HILL SNOTEL   10200    6/01/97   ---     13.5     14.9     10.2
     JOE WRIGHT SNOTEL     10000    6/01/97   ---     20.6     22.8     17.1
     LA PRELE PILLOW        8380    6/01/97   ---       .1       .0      1.0
     RENO HILL PILLOW       8500    6/01/97   ---      4.0      2.2      2.9
     ROACH SNOTEL           9400    6/01/97   ---      8.1      4.7      7.5
     SOUTH PASS PILLOW      9040    6/01/97   ---      8.2      8.7     10.0
     WINDY PEAK PILLOW      7900    6/01/97   ---       .0       .0       .0

    LITTLE SNAKE RIVER BASIN                                             
     BATTLE MTN. PILLOW     7440    6/01/97   ---       .0       .0       .0
     DIVIDE PEAK PILLOW     8860    6/01/97   ---      1.0       .0      2.9
     ELK RIVER SNOTEL       8600    6/01/97   ---       .0       .0       .2
     OLD BATTLE PILLOW      9920    6/01/97   ---     36.6     29.4     24.0
     ELKHART PARK PILLOW    9400    6/01/97   ---       .0      9.9      4.4
     GROS VENTRE PILLOW     8750    6/01/97   ---      4.1      8.5       .0
     INDIAN CREEK PILLOW    9430    6/01/97   ---     21.5     28.7     17.4
     SANDSTONE PILLOW       8150    6/01/97   ---       .0       .0       .0
     WHISKEY PARK PILLOW    8950    6/01/97   ---     26.0     24.6     12.0

    UPPER GREEN RIVER BASIN                                              
     BIG SANDY PILLOW       9080    6/01/97   ---       .0      2.8       .0
     BLIND BULL PILLOW      8900    6/01/97   ---     37.2     39.4     16.4
     KELLEY R.S. PILLOW     8180    6/01/97   ---       .0      2.0       .0
     KENDALL R.S. PILLOW    7740    6/01/97   ---       .0       .0       .0
     LOOMIS PARK PILLOW     8240    6/01/97   ---       .0      9.4       .0
     NEW FORK PILLOW        8340    6/01/97   ---       .0       .0       .0
     SNIDER BASIN PILLOW    8060    6/01/97   ---       .0       .0       .0
     TRIPLE PEAK  PILLOW    8500    6/01/97   ---      9.4     17.8     14.7

    LOWER GREEN RIVER BASIN                                              
     HAMS FORK PILLOW       7840    6/01/97   ---       .0       .0       .0
     HEWINTA SNOTEL         9500    6/01/97   ---       .0S      .0       .0
     HICKERSON PARK SNOTE   9100    6/01/97   ---       .0S      .0       .0
     HOLE-IN-ROCK SNOTEL    9150    6/01/97   ---       .0S      .0       .1
     INDIAN CREEK PILLOW    9430    6/01/97   ---     21.5     28.7     17.4
     KELLEY R.S. PILLOW     8180    6/01/97   ---       .0      2.0       .0
     SPRING CRK. PILLOW     9000    6/01/97   ---     18.3     31.5     19.0
     STEEL CREEK PARK SNO  10100    6/01/97   ---      9.2S    16.6     12.0

    UPPER BEAR RIVER BASIN                                               
     HAYDEN FORK SNOTEL     9100    6/01/97   ---       .0S      .0       .0
     INDIAN CREEK PILLOW    9430    6/01/97   ---     21.5     28.7     17.4
     KELLEY R.S. PILLOW     8180    6/01/97   ---       .0      2.0       .0
     SALT RIVER PILLOW      7600    6/01/97   ---       .0       .0       .0
     TRIAL LAKE SNOTEL      9960    6/01/97   ---     15.4S    18.9     12.0

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