Water Resources Data System & State Climate Office

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 THURSDAY: MARCH 2 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 24.4 13.6 179 31.7 17.4 182 Black Bear 8170 -M 29.7 * -M 31.0 * Blind Bull Sum 8650 -M 18.0 * -M 16.0 * Cottonwood Creek 7670 -M 17.1 * -M 19.7 * East Rim Divide 7930 -M 8.2 * -M 9.6 * Grand Targhee 9260 -M 30.3 * -M 25.0 * Granite Creek 6770 -M 13.8 * -M 16.6 * Grassy Lake 7265 -M 26.3 * -M 29.6 * Gros Ventre Summit 8750 -M 9.8 * -M 10.2 * Gunsight Pass 9820 17.8 10.6 168 20.5 10.9 188 Lewis Lake Divide 7850 -M 25.2 * -M 29.0 * Phillips Bench 8200 -M 19.8 * -M 22.9 * Salt River Summit 7760 -M 10.7 * -M 13.5 * Snake River Station 6920 -M 14.3 * -M 18.7 * Spring Creek Divide 9000 -M 18.7 * -M 19.3 * Thumb Divide 7980 -M 12.3 * -M 14.7 * Togwotee Pass 9580 -M 17.9 * -M 19.5 * Two Ocean Plateau 9240 -M 21.6 * -M 21.8 * Willow Creek 8380 -M 22.4 * -M 27.0 * Younts Peak 8350 -M 11.7 * -M 12.7 * ----- ----- Basin Index (%) 174* 184* MADISON-GALLATIN Black Bear 8170 -M 29.7 * -M 31.0 * Canyon 7870 -M 10.6 * -M 13.1 * Madison Plateau 7750 -M 17.9 * -M 21.3 * West Yellowstone 6700 11.5 9.0 128 19.9 11.7 170 Whiskey Creek 6800 -M 12.1 * -M 16.3 * ----- ----- Basin Index (%) 128* 170* YELLOWSTONE Beartooth Lake 9360 -M 16.9 * -M 15.8 * Burnt Mtn 5880 5.2 4.0 130 11.3 9.6 118 Canyon 7870 -M 10.6 * -M 13.1 * Cole Creek 7850 8.5 10.1 84 6.1 9.1 67 Evening Star 9200 -M 19.2 * -M 22.2 * Fisher Creek 9100 32.9 25.9 127 37.0 25.7 144 Northeast Entrance 7350 -M 8.3 * -M 9.9 * Parker Peak 9400 -M 16.1 * -M 14.1 * Sylvan Lake 8420 -M 15.9 * -M 18.0 * Thumb Divide 7980 -M 12.3 * -M 14.7 * Two Ocean Plateau 9240 -M 21.6 * -M 21.8 * White Mill 8700 -M 18.4 * -M 19.1 * Wolverine 7650 -M 8.5 * -M 10.0 * ----- ----- Basin Index (%) 116* 123* WIND RIVER Burroughs Creek 8750 -M -M * -M -M * Castle Creek 8400 11.3 -M * 13.4 -M * Cold Springs 9630 -M 5.5 * -M 7.5 * Deer Park 9700 27.8 10.8 257 28.5 15.4 185 Hobbs Park 10100 -M 9.8 * -M 9.5 * Kirwin 9550 15.9 7.0 227 18.7 8.8 212 Little Warm 9370 -M 8.0 * -M 9.9 * Owl Creek 8975 -M 3.9 * -M 4.3 * South Pass 9040 -M 11.5 * -M 13.5 * St. Lawrence Alt 8620 7.4 5.2 142 11.8 6.6 179 Togwotee Pass 9580 -M 17.9 * -M 19.5 * Townsend Creek 8700 -M 6.6 * -M 8.7 * ----- ----- Basin Index (%) 222* 192* BIGHORN BASIN Bald Mtn. 9380 15.3 14.8 103 13.2 13.2 100 Bear Trap Meadow 8200 4.4 4.4 100 5.6 6.2 90 Bone Springs Div 9350 13.6 12.2 111 13.0 11.8 110 Grave Springs 8550 5.1 6.9 74 5.7 8.0 71 Kirwin 9550 15.9 7.0 227 18.7 8.8 212 Marquette 8760 7.2 -M * 11.0 -M * Middle Powder 7760 6.0 8.1 74 6.1 8.8 69 Owl Creek 8975 -M 3.9 * -M 4.3 * Powder River Pass 9480 6.2 8.0 78 8.9 9.6 93 Shell Creek 9580 12.9 11.7 110 10.0 10.7 93 Timber Creek 7950 5.2 3.8 137 6.6 5.3 125 ----- ----- Basin Index (%) 110 107 SHOSHONE RIVER Blackwater 9780 -M 17.3 * -M 16.2 * Evening Star 9200 -M 19.2 * -M 22.2 * Marquette 8760 7.2 -M * 11.0 -M * Sylvan Road 7120 -M 9.5 * -M 13.9 * Younts Peak 8350 -M 11.7 * -M 12.7 * ----- ----- Basin Index (%) * * POWDER RIVER Bear Trap Meadow 8200 4.4 4.4 100 5.6 6.2 90 Cloud Peak Reservoir 9860 9.9 10.4 95 11.3 9.6 118 Grave Springs 8550 5.1 6.9 74 5.7 8.0 71 Hansen Sawmill 8360 6.7 4.7 143 8.6 6.1 141 Middle Powder 7760 6.0 8.1 74 6.1 8.8 69 Powder River Pass 9480 6.2 8.0 78 8.9 9.6 93 Soldier Park 8720 -M -M * -M -M * ----- ----- Basin Index (%) 90 96 TONGUE RIVER Big Goose 7990 7.1 6.2 115 8.1 7.9 103 Bone Springs Div 9350 13.6 12.2 111 13.0 11.8 110 Burgess Junction 7880 -M 8.3 * -M 9.0 * Dome Lake 8880 9.4 8.7 108 10.6 10.0 106 Little Goose 8870 7.8 -M * 10.2 -M * Sucker Creek 8880 8.8 9.0 98 8.6 10.7 80 Tie Creek 6870 4.9 4.3 114 9.1 8.5 107 ----- ----- Basin Index (%) 108 101 BELLE FOURCHE Cole Canyon 5910 3.0 4.9 61 5.7 7.1 80 ----- ----- Basin Index (%) 61 80 CHEYENNE RIVER BASIN Blind Park 6890 4.4 6.4 69 6.8 9.5 72 North Rapid Creek 6130 4.4 5.9 75 5.8 7.7 75 ----- ----- Basin Index (%) 72 73 UPPER N. PLATTE Arapaho Ridge 10960 22.6 16.8 135 22.8 17.8 128 Blackhall Mtn 9820 -M -M * -M -M * Columbine 9160 22.7 19.9 114 24.4 20.4 120 Divide Peak 8880 -M 15.9 * -M 16.8 * Joe Wright 10120 -M 16.8 * -M 20.0 * Laprele Creek 8375 10.3 7.8 132 9.8 9.3 105 Med Bow 10500 -M -M * -M -M * North French Creek 10130 22.3 21.1 106 23.4 21.1 111 Never Summer 10280 -M 16.3 * -M -M * Old Battle 10000 33.4 24.1 139 -M 28.0 * Rawah 9020 -M 8.8 * -M 11.0 * Sage Creek Basin 7850 -M 10.6 * -M 11.8 * Sand Lake 10050 25.8 21.2 122 23.8 19.0 125 South Brush Creek 8440 -M 10.3 * -M 11.8 * Tower 10500 -M 36.5 * -M 32.0 * Webber Springs 9250 -M 18.8 * -M 21.2 * Willow Creek Pass 9540 -M 9.6 * -M 10.4 * Zirkel 9340 -M 23.1 * -M 23.6 * ----- ----- Basin Index (%) 124* 119* SWEETWATER Deer Park 9700 27.8 10.8 257 28.5 15.4 185 Larsen Creek 9000 18.2 9.6 190 20.5 -M * South Pass 9040 -M 11.5 * -M 13.5 * ----- ----- Basin Index (%) 225 185* LOWER N. PLATTE Casper Mtn. 7900 9.2 10.3 89 8.8 11.2 79 Laprele Creek 8375 10.3 7.8 132 9.8 9.3 105 Reno Hill 8400 9.8 10.2 96 9.9 11.1 89 Windy Peak 7900 9.0 5.8 155 9.4 7.8 121 ----- ----- Basin Index (%) 112 96 LARAMIE RIVER Brooklyn Lake 10240 21.9 15.1 145 19.6 16.1 122 Cinnabar Park 9574 17.2 17.2 100 19.6 19.8 99 Crow Creek 8330 4.7 6.7 70 7.4 7.8 95 Deadman Hill 10220 18.3 12.5 146 17.2 12.8 134 Rawah 9020 -M 8.8 * -M 11.0 * Roach 9700 -M 12.5 * -M 14.7 * ----- ----- Basin Index (%) 121 113 S. PLATTE Black Mountain 8920 9.1 -M * 10.2 -M * Crow Creek 8330 4.7 6.7 70 7.4 7.8 95 Deadman Hill 10220 18.3 12.5 146 17.2 12.8 134 ----- ----- Basin Index (%) 120 119 LITTLE SNAKE RIVER Battle Mountain 7440 -M 9.9 * -M 12.1 * Divide Peak 8880 -M 15.9 * -M 16.8 * Elk River 8700 -M 15.7 * -M 16.0 * Little Snake River 8915 -M 19.8 * -M 25.1 * Old Battle 10000 33.4 24.1 139 -M 28.0 * Sage Creek Basin 7850 -M 10.6 * -M 11.8 * Sandstone RS 8150 12.2 10.5 116 14.6 15.1 97 Whiskey Park 8950 -M 21.7 * -M 22.4 * ----- ----- Basin Index (%) 132* 97* UPPER GREEN RIVER Big Sandy Opening 9080 -M 10.2 * -M 10.6 * Blind Bull Sum 8650 -M 18.0 * -M 16.0 * East Rim Divide 7930 -M 8.2 * -M 9.6 * Elkhart Park G.S. 9400 -M 9.5 * -M 10.6 * Gros Ventre Summit 8750 -M 9.8 * -M 10.2 * Gunsight Pass 9820 17.8 10.6 168 20.5 10.9 188 Kendall R.S. 7740 -M 9.8 * -M 11.7 * Loomis Park 8240 -M 11.8 * -M 14.1 * New Fork Lake 8340 -M 8.3 * -M 8.8 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M 9.7 * -M 11.6 * Spring Creek Divide 9000 -M 18.7 * -M 19.3 * Triple Peak 8500 -M 17.0 * -M 20.3 * ----- ----- Basin Index (%) 168* 188* LOWER GREEN RIVER Blacks Fork Jct 8869 -M -M * -M -M * Buck Pasture 9632 -M -M * -M -M * EF Blacks Fork GS 9360 -M -M * -M -M * Hams Fork 7840 16.0 9.3 172 17.7 9.2 192 Hewinta 9500 -M 8.0 * -M 10.9 * Hickerson Park 9122 -M 6.0 * -M 7.6 * Hole-in-Rock 9168 6.6 5.6 118 8.7 7.1 123 Indian Creek 9425 -M 19.0 * -M 17.9 * Kelley R.S. 8180 -M 12.2 * -M 14.6 * Spirit Lk 10235 13.6 -M * 14.4 -M * Steel Creek Park 10158 14.7 11.6 127 15.9 12.5 127 ----- ----- Basin Index (%) 141* 147* UPPER BEAR RIVER Bear River RS 8777 -M -M * -M -M * Bug Lake 7987 -M 14.9 * -M 15.5 * Burts Miller Ranch 8000 -M -M * -M -M * Chalk Creek #1 9171 -M 18.5 * -M 19.5 * Hayden Fork 9130 -M 12.2 * -M 16.4 * Kelley R.S. 8180 -M 12.2 * -M 14.6 * Lily Lake 9133 -M 10.4 * -M 13.3 * Monte Cristo 8932 31.8 21.2 150 -M 20.6 * Salt River Summit 7760 -M 10.7 * -M 13.5 * ----- ----- Basin Index (%) 150* * ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) 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 Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median 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. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) 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 Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median 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. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.