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 FRIDAY: SEPTEMBER 18 , 2026 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ MONTANA KOOTENAI RIVER BASIN Banfield Mountain 5580 .1 .0 * 41.4 35.6 116 Bear Mountain 5460 .0 .0 * 89.2 90.8 98 Garver Creek 4250 .2 .0 * 31.2 26.7 117 Grave Creek 4350 .0 .0 * 63.4 47.8 133 Hand Creek 5030 .0 .0 * 33.0 27.0 122 Hawkins Lake 6460 .0 .0 * 55.3 45.2 122 Poorman Creek 5050 .0 .0 * 83.5 73.8 113 Stahl Peak 6040 .1 .0 * 68.7 61.2 112 ----- ----- Basin Index (%) * 114 FLATHEAD RIVER BASIN Ashley Divide 4820 -M -M * 24.4 -M * Badger Pass 6870 .1 .0 * -M 47.9 * Bassoo Peak 5130 .0 -M * 26.5 -M * Bisson Creek 4880 -M .0 * 41.9 32.1 131 Blacktail Mtn 5660 .0 .0 * 26.8 24.0 112 Emery Creek 4340 .0 .0 * 49.9 40.0 125 Flattop Mtn. 6280 .1 .0 * 85.5 72.6 118 Grave Creek 4350 .0 .0 * 63.4 47.8 133 Hand Creek 5030 .0 .0 * 33.0 27.0 122 Kraft Creek 4770 .0 .0 * 48.1 37.2 129 Moss Peak 6760 .0 .0 * 74.6 61.0 122 Noisy Basin 6070 .1 .0 * 77.4 69.1 112 North Fork Jocko 6110 .0 .0 * 73.6 67.0 110 Pike Creek 5930 .0 -M * 57.7 -M * Sleeping Woman 6120 .0 .0 * 46.1 34.4 134 Stahl Peak 6040 .1 .0 * 68.7 61.2 112 Stuart Mountain 7270 .0 .0 * 50.4 47.5 106 ----- ----- Basin Index (%) * 119 UPPER CLARK FORK RIVER BASIN Barker Lakes 8250 .0 .0 * 32.5 32.4 100 Basin Creek 7120 .0 .0 * 17.9 22.9 78 Black Pine 7170 .0 .0 * 31.9 24.6 130 Combination 5620 .0 .0 * 22.4 19.8 113 Copper Bottom 5200 .0 .0 * -M 24.2 * Copper Camp 6980 .0 .0 * 62.6 38.1 164 Lubrecht Flume 4690 .0 .0 * 31.0 19.6 158 Nevada Ridge 7030 .0 .0 * 34.1 28.2 121 N Fk Elk Creek 6180 .0 .0 * 34.5 25.4 136 North Fork Jocko 6110 .0 .0 * 73.6 67.0 110 Peterson Meadows 7190 .0 .0 * 30.1 25.8 117 Skalkaho Summit 7260 .0 .0 * 41.2 35.8 115 Stuart Mountain 7270 .0 .0 * 50.4 47.5 106 Warm Springs 7840 .0 .0 * 47.3 39.4 120 ----- ----- Basin Index (%) * 119 BITTERROOT RIVER BASIN Daly Creek 5780 .2 .0 * 31.8 23.9 133 Lolo Pass 5280 .1 .0 * 51.7 45.8 113 Moose Creek 6170 .0 .0 * 33.0 30.1 110 Nez Perce Camp 5670 .0 .0 * 39.0 32.4 120 Saddle Mtn. 7890 .0 .0 * 33.7 34.9 97 Skalkaho Summit 7260 .0 .0 * 41.2 35.8 115 Twelvemile Creek 5530 .0 .0 * 58.5 46.1 127 Twin Lakes 6380 .1 .0 * 77.5 64.0 121 ----- ----- Basin Index (%) * 117 LOWER CLARK FORK RIVER BASIN Bear Mountain 5460 .0 .0 * 89.2 90.8 98 Hoodoo Basin 6060 .0 .0 * -M 60.8 * Humboldt Gulch 4260 -M .0 * -M 51.6 * Lookout 5180 .1 .0 * 52.5 48.6 108 Mosquito Ridge 5270 .1 .0 * 58.4 56.9 103 Poorman Creek 5050 .0 .0 * 83.5 73.8 113 Sleeping Woman 6120 .0 .0 * 46.1 34.4 134 Stuart Mountain 7270 .0 .0 * 50.4 47.5 106 Sunset 5570 -M .0 * 52.6 50.0 105 ----- ----- Basin Index (%) * 108 JEFFERSON RIVER BASIN Albro Lake 8500 .0 .0 * 37.2 36.0 103 Barker Lakes 8250 .0 .0 * 32.5 32.4 100 Basin Creek 7120 .0 .0 * 17.9 22.9 78 Beagle Springs 8880 .2 .0 * 21.7 22.4 97 Bloody Dick 7570 .0 .0 * 25.4 24.4 104 Calvert Creek 6410 .0 .0 * 23.2 18.2 127 Clover Meadow 8770 .6 .0 * 28.9 31.5 92 Darkhorse Lake 8930 .0 .0 * 46.2 43.6 106 Divide 7770 .1 .0 * 26.6 23.6 113 Frohner Meadow 6520 .0 .0 * 26.3 22.6 116 JL Meadow 8750 -M -M * 27.8 -M * Lakeview Ridge 7340 .1 .0 * 31.7 25.1 126 Lemhi Ridge 8080 .1 .0 * 23.4 24.2 97 Lower Twin 7920 .1 .0 * 34.4 38.2 90 Moose Creek 6170 .0 .0 * 33.0 30.1 110 Mule Creek 8300 .0 .0 * 27.2 29.0 94 Rocker Peak 7960 .0 .0 * 31.0 28.5 109 Saddle Mtn. 7890 .0 .0 * 33.7 34.9 97 Short Creek 6990 .1 .0 * 17.4 17.6 99 Slagamelt Lakes 8600 .4 -M * 48.4 -M * White Elephant 7670 .0 .0 * 43.6 44.4 98 ----- ----- Basin Index (%) * 102 MADISON RIVER BASIN Albro Lake 8500 .0 .0 * 37.2 36.0 103 Beaver Creek 7820 .2 .0 * 35.0 34.5 101 Black Bear 8160 .1 .0 * 52.7 53.6 98 Canyon 7870 .1 .0 * 28.2 26.9 105 Carrot Basin 9200 .0 .0 * 45.9 45.2 102 Clover Meadow 8770 .6 .0 * 28.9 31.5 92 Lone Mountain 8820 .2 .0 * 29.9 32.3 93 Lower Twin 7920 .1 .0 * 34.4 38.2 90 Madison Plateau 7710 .1 .0 * 40.1 39.9 101 Tepee Creek 7950 .0 .0 * 28.8 25.3 114 West Yellowstone 6680 .5 .0 * 24.8 23.8 104 Whiskey Creek 6790 .2 .0 * 34.6 32.8 105 ----- ----- Basin Index (%) * 100 GALLATIN RIVER BASIN Beaver Creek 7820 .2 .0 * 35.0 34.5 101 Brackett Creek 7370 .1 .0 * 43.5 46.0 95 Carrot Basin 9200 .0 .0 * 45.9 45.2 102 Lick Creek 6880 .0 .0 * 27.8 29.0 96 Lone Mountain 8820 .2 .0 * 29.9 32.3 93 Sacajawea 6610 .0 .0 * 43.0 42.8 100 Shower Falls 8060 .1 .0 * 43.2 45.0 96 ----- ----- Basin Index (%) * 98 HELENA VALLEY Boulder Mountain 7890 .0 .0 * 40.7 38.0 107 Frohner Meadow 6520 .0 .0 * 26.3 22.6 116 Nevada Ridge 7030 .0 .0 * 34.1 28.2 121 Tizer Basin 6880 .0 .0 * 27.2 25.0 109 ----- ----- Basin Index (%) * 113 SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS Boulder Mountain 7890 .0 .0 * 40.7 38.0 107 Crystal Lake 6130 .0 .0 * 36.8 40.1 92 Daisy Peak 7590 .0 .0 * 19.6 25.6 77 Deadman Creek 6440 .0 .0 * 26.4 25.8 102 Elk Peak 7600 -M -M * -M -M * Onion Park 7420 .0 .0 * 32.9 33.7 98 Pickfoot Creek 6680 .1 -M * 33.5 -M * Spur Park 8080 .0 .0 * 31.2 32.3 97 Stringer Creek 6550 -M .0 * -M 29.4 * ----- ----- Basin Index (%) * 96 SUN, TETON AND MARIAS RIVER BASINS Badger Pass 6870 .1 .0 * -M 47.9 * Dupuyer Creek 5740 .0 .0 * 38.7 26.7 145 Mount Lockhart 6430 .0 .0 * 58.4 39.6 147 Pike Creek 5930 .0 -M * 57.7 -M * Waldron 5640 .0 .0 * 41.2 28.7 144 Wood Creek 5970 .0 .0 * 34.4 27.0 127 ----- ----- Basin Index (%) * 142 ST. MARYS RIVER BASIN Flattop Mtn. 6280 .1 .0 * 85.5 72.6 118 Many Glacier 4930 .0 .0 * 59.4 44.8 133 ----- ----- Basin Index (%) * 123 MILK RIVER BASIN Rocky Boy 4730 .0 .0 * 35.3 24.5 144 ----- ----- Basin Index (%) * 144 UPPER YELLOWSTONE RIVER BASIN Beartooth Lake 9360 .0 .0 * 39.0 34.2 114 Box Canyon 6720 .0 .0 * 27.8 23.0 121 Brackett Creek 7370 .1 .0 * 43.5 46.0 95 Burnt Mtn 5920 .0 .0 * 22.7 27.0 84 Canyon 7870 .1 .0 * 28.2 26.9 105 Cole Creek 7910 .0 .0 * 19.8 28.8 69 East Boulder Mine 6310 .0 .0 * 25.3 27.5 92 Evening Star 9030 .1 .0 * 48.5 42.9 113 Fisher Creek 9110 .0 .0 * 53.2 51.2 104 Monument Peak 8740 .1 .0 * 40.9 37.0 111 Northeast Entrance 7420 .0 .0 * 27.7 24.0 115 Parker Peak 9420 .0 .0 * 39.2 32.2 122 Placer Basin 8790 .1 .0 * 39.0 35.2 111 Porcupine 6480 .0 .0 * 27.9 24.8 112 Sacajawea 6610 .0 .0 * 43.0 42.8 100 Shower Falls 8060 .1 .0 * 43.2 45.0 96 S Fork Shields 8090 .0 .0 * 41.9 40.8 103 Sylvan Lake 8440 .0 .0 * 39.0 38.0 103 Thumb Divide 7970 .1 .0 * 30.2 28.6 106 Two Ocean Plateau 9240 .1 .0 * 45.6 40.8 112 White Mill 8730 .0 .0 * 39.6 38.7 102 Wolverine 7660 .0 .0 * 27.7 22.0 126 ----- ----- Basin Index (%) * 105 BIGHORN RIVER BASIN (WYOMING) Bald Mtn. 9360 .2 .0 * 26.6 30.0 89 Bear Trap Meadow 8200 .2 .0 * 15.9 19.4 82 Blackwater 9830 1.8 .0 * 40.0 35.5 113 Bone Springs Div 9340 .0 .0 * 21.0 29.0 72 Burroughs Creek 8760 -M -M * 29.7 -M * Castle Creek 8410 .3 .0 * 15.4 17.8 87 Cold Springs 9640 .0 .0 * 22.6 20.1 112 Deer Park 9690 .1 .0 * 27.8 29.8 93 Evening Star 9030 .1 .0 * 48.5 42.9 113 Grave Springs 8560 .2 .0 * 16.6 18.8 88 Hobbs Park 10080 .0 .0 * 28.1 26.2 107 Kirwin 9580 .1 .0 * 30.3 25.7 118 Little Warm 9370 .1 .0 * 27.5 23.6 117 Marquette 8800 .0 .0 * 16.2 24.5 66 Middle Powder 7760 .0 .0 * 16.5 20.4 81 Owl Creek 8990 .1 .0 * 16.5 17.3 95 Powder River Pass 9480 .0 .0 * 22.7 26.6 85 Shell Creek 9570 .1 .0 * 26.9 26.2 103 South Pass 9040 .2 .0 * 24.0 25.4 94 St. Lawrence Alt 8610 .0 -M * 15.5 -M * Sylvan Lake 8440 .0 .0 * 39.0 38.0 103 Sylvan Road 7140 .0 .0 * 27.1 26.5 102 Timber Creek 7910 .0 .0 * 12.4 21.9 57 Togwotee Pass 9590 .3 .0 * 42.6 37.0 115 Townsend Creek 8720 .4 .0 * 20.9 24.6 85 Younts Peak 8340 .2 .0 * 33.8 27.0 125 ----- ----- Basin Index (%) * 98 TONGUE RIVER BASIN (WYOMING) Big Goose 8010 -M .0 * 19.5 23.8 82 Bone Springs Div 9340 .0 .0 * 21.0 29.0 72 Burgess Junction 7910 .0 .0 * 22.9 24.5 93 Dome Lake 8890 .1 .0 * 25.2 27.6 91 Little Goose 8560 .1 .0 * 22.6 27.2 83 Sucker Creek 8840 .1 .0 * 25.7 29.6 87 Tie Creek 7050 .0 .0 * 19.9 25.4 78 ----- ----- Basin Index (%) * 84 POWDER RIVER BASIN (WYOMING) Bear Trap Meadow 8200 .2 .0 * 15.9 19.4 82 Cloud Peak Reservoir 9830 .1 .0 * 29.2 29.2 100 Grave Springs 8560 .2 .0 * 16.6 18.8 88 Hanson Sawmill 8360 .2 .0 * 17.5 21.8 80 Middle Powder 7760 .0 .0 * 16.5 20.4 81 Powder River Pass 9480 .0 .0 * 22.7 26.6 85 Soldier Park 8680 .1 .0 * 15.5 21.6 72 ----- ----- Basin Index (%) * 85 Missouri River Basin ab Ft. Peck Albro Lake 8500 .0 .0 * 37.2 36.0 103 Badger Pass 6870 .1 .0 * -M 47.9 * Barker Lakes 8250 .0 .0 * 32.5 32.4 100 Basin Creek 7120 .0 .0 * 17.9 22.9 78 Beagle Springs 8880 .2 .0 * 21.7 22.4 97 Beaver Creek 7820 .2 .0 * 35.0 34.5 101 Black Bear 8160 .1 .0 * 52.7 53.6 98 Bloody Dick 7570 .0 .0 * 25.4 24.4 104 Boulder Mountain 7890 .0 .0 * 40.7 38.0 107 Brackett Creek 7370 .1 .0 * 43.5 46.0 95 Calvert Creek 6410 .0 .0 * 23.2 18.2 127 Canyon 7870 .1 .0 * 28.2 26.9 105 Carrot Basin 9200 .0 .0 * 45.9 45.2 102 Clover Meadow 8770 .6 .0 * 28.9 31.5 92 Crystal Lake 6130 .0 .0 * 36.8 40.1 92 Daisy Peak 7590 .0 .0 * 19.6 25.6 77 Darkhorse Lake 8930 .0 .0 * 46.2 43.6 106 Deadman Creek 6440 .0 .0 * 26.4 25.8 102 Divide 7770 .1 .0 * 26.6 23.6 113 Dupuyer Creek 5740 .0 .0 * 38.7 26.7 145 Elk Peak 7600 -M -M * -M -M * Frohner Meadow 6520 .0 .0 * 26.3 22.6 116 JL Meadow 8750 -M -M * 27.8 -M * Lakeview Ridge 7340 .1 .0 * 31.7 25.1 126 Lemhi Ridge 8080 .1 .0 * 23.4 24.2 97 Lick Creek 6880 .0 .0 * 27.8 29.0 96 Lone Mountain 8820 .2 .0 * 29.9 32.3 93 Lower Twin 7920 .1 .0 * 34.4 38.2 90 Madison Plateau 7710 .1 .0 * 40.1 39.9 101 Moose Creek 6170 .0 .0 * 33.0 30.1 110 Mount Lockhart 6430 .0 .0 * 58.4 39.6 147 Mule Creek 8300 .0 .0 * 27.2 29.0 94 Nevada Ridge 7030 .0 .0 * 34.1 28.2 121 Onion Park 7420 .0 .0 * 32.9 33.7 98 Pickfoot Creek 6680 .1 -M * 33.5 -M * Pike Creek 5930 .0 -M * 57.7 -M * Rocker Peak 7960 .0 .0 * 31.0 28.5 109 Sacajawea 6610 .0 .0 * 43.0 42.8 100 Saddle Mtn. 7890 .0 .0 * 33.7 34.9 97 Short Creek 6990 .1 .0 * 17.4 17.6 99 Shower Falls 8060 .1 .0 * 43.2 45.0 96 Slagamelt Lakes 8600 .4 -M * 48.4 -M * Spur Park 8080 .0 .0 * 31.2 32.3 97 Stringer Creek 6550 -M .0 * -M 29.4 * Tepee Creek 7950 .0 .0 * 28.8 25.3 114 Tizer Basin 6880 .0 .0 * 27.2 25.0 109 Waldron 5640 .0 .0 * 41.2 28.7 144 West Yellowstone 6680 .5 .0 * 24.8 23.8 104 Whiskey Creek 6790 .2 .0 * 34.6 32.8 105 White Elephant 7670 .0 .0 * 43.6 44.4 98 Wood Creek 5970 .0 .0 * 34.4 27.0 127 ----- ----- Basin Index (%) * 105 Yellowstone River Basin ab Glendive Bald Mtn. 9360 .2 .0 * 26.6 30.0 89 Bear Trap Meadow 8200 .2 .0 * 15.9 19.4 82 Beartooth Lake 9360 .0 .0 * 39.0 34.2 114 Big Goose 8010 -M .0 * 19.5 23.8 82 Blackwater 9830 1.8 .0 * 40.0 35.5 113 Bone Springs Div 9340 .0 .0 * 21.0 29.0 72 Box Canyon 6720 .0 .0 * 27.8 23.0 121 Brackett Creek 7370 .1 .0 * 43.5 46.0 95 Burgess Junction 7910 .0 .0 * 22.9 24.5 93 Burnt Mtn 5920 .0 .0 * 22.7 27.0 84 Burroughs Creek 8760 -M -M * 29.7 -M * Canyon 7870 .1 .0 * 28.2 26.9 105 Castle Creek 8410 .3 .0 * 15.4 17.8 87 Cloud Peak Reservoir 9830 .1 .0 * 29.2 29.2 100 Cold Springs 9640 .0 .0 * 22.6 20.1 112 Cole Creek 7910 .0 .0 * 19.8 28.8 69 Deer Park 9690 .1 .0 * 27.8 29.8 93 Dome Lake 8890 .1 .0 * 25.2 27.6 91 East Boulder Mine 6310 .0 .0 * 25.3 27.5 92 Evening Star 9030 .1 .0 * 48.5 42.9 113 Fisher Creek 9110 .0 .0 * 53.2 51.2 104 Grave Springs 8560 .2 .0 * 16.6 18.8 88 Hanson Sawmill 8360 .2 .0 * 17.5 21.8 80 Hobbs Park 10080 .0 .0 * 28.1 26.2 107 Kirwin 9580 .1 .0 * 30.3 25.7 118 Little Goose 8560 .1 .0 * 22.6 27.2 83 Little Warm 9370 .1 .0 * 27.5 23.6 117 Marquette 8800 .0 .0 * 16.2 24.5 66 Middle Powder 7760 .0 .0 * 16.5 20.4 81 Monument Peak 8740 .1 .0 * 40.9 37.0 111 Northeast Entrance 7420 .0 .0 * 27.7 24.0 115 Owl Creek 8990 .1 .0 * 16.5 17.3 95 Parker Peak 9420 .0 .0 * 39.2 32.2 122 Placer Basin 8790 .1 .0 * 39.0 35.2 111 Porcupine 6480 .0 .0 * 27.9 24.8 112 Powder River Pass 9480 .0 .0 * 22.7 26.6 85 S Fork Shields 8090 .0 .0 * 41.9 40.8 103 Sacajawea 6610 .0 .0 * 43.0 42.8 100 Shell Creek 9570 .1 .0 * 26.9 26.2 103 Shower Falls 8060 .1 .0 * 43.2 45.0 96 Soldier Park 8680 .1 .0 * 15.5 21.6 72 South Pass 9040 .2 .0 * 24.0 25.4 94 St. Lawrence Alt 8610 .0 -M * 15.5 -M * Sucker Creek 8840 .1 .0 * 25.7 29.6 87 Sylvan Lake 8440 .0 .0 * 39.0 38.0 103 Sylvan Road 7140 .0 .0 * 27.1 26.5 102 Thumb Divide 7970 .1 .0 * 30.2 28.6 106 Tie Creek 7050 .0 .0 * 19.9 25.4 78 Timber Creek 7910 .0 .0 * 12.4 21.9 57 Togwotee Pass 9590 .3 .0 * 42.6 37.0 115 Townsend Creek 8720 .4 .0 * 20.9 24.6 85 Two Ocean Plateau 9240 .1 .0 * 45.6 40.8 112 White Mill 8730 .0 .0 * 39.6 38.7 102 Wolverine 7660 .0 .0 * 27.7 22.0 126 Younts Peak 8340 .2 .0 * 33.8 27.0 125 ----- ----- Basin Index (%) * 99 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Median (or Average) 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 (or Average) represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1991-2020. 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 or average for the day is less than 10% of the maximum median or average value for the year. * Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages and the resulting fraction multiplied by 100.