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 SATURDAY: MAY 18 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ MONTANA KOOTENAI RIVER BASIN Banfield Mountain 5600 1.1 5.9 19 25.0 28.9 87 Bear Mountain 5400 35.8 49.8 72 64.2 78.2 82 Garver Creek 4250 .4 .0 * 17.1 20.4 84 Grave Creek 4300 .0 .0 * 35.3 35.6 99 Hand Creek 5035 .0 .0 * 17.2 19.7 87 Hawkins Lake 6450 12.0 18.0 67 34.6 35.8 97 Poorman Creek 5100 10.3 22.3 46 45.1 62.3 72 Stahl Peak 6030 28.6 36.0 79 44.7 44.9 100 ----- ----- Basin Index (%) 67 87 FLATHEAD RIVER BASIN Ashley Divide 4820 -M -M * 11.6 -M * Badger Pass 6900 9.4 26.8 35 26.4 37.1 71 Bassoo Peak 5150 -M -M * 14.1 -M * Bisson Creek 4920 -M .0 * 20.2 21.0 96 Blacktail Mtn 5650 -M .0 * 13.8 16.2 85 Emery Creek 4350 .0 .0 * 26.2 29.0 90 Flattop Mtn. 6300 33.1 41.7 79 48.7 59.2 82 Grave Creek 4300 .0 .0 * 35.3 35.6 99 Hand Creek 5035 .0 .0 * 17.2 19.7 87 Kraft Creek 4750 .0 .0 * 23.5 29.2 80 Moss Peak 6780 29.4 39.4 75 41.4 46.2 90 Noisy Basin 6040 38.3 38.0 101 50.2 51.8 97 North Fork Jocko 6330 24.6 34.1 72 40.5 54.5 74 Pike Creek 5930 .0 -M * 26.7 -M * Sleeping Woman 6150 .0 4.0 0 21.8 26.0 84 Stahl Peak 6030 28.6 36.0 79 44.7 44.9 100 Stuart Mountain 7400 20.3 28.7 71 27.7 36.4 76 ----- ----- Basin Index (%) 74 86 UPPER CLARK FORK RIVER BASIN Barker Lakes 8250 11.4 14.2 80 18.9 21.2 89 Basin Creek 7180 .2 4.5 4 7.7 13.8 56 Black Pine 7210 .0 2.2 0 13.8 16.6 83 Combination 5600 -M .0 * -M 11.6 * Copper Bottom 5200 -M .0 * 11.9 17.4 68 Copper Camp 6950 1.0 20.8 5 23.3 30.9 75 Lubrecht Flume 4680 .0 .0 * 8.9 12.6 71 Nevada Ridge 7020 4.2 8.7 48 14.4 18.8 77 N Fk Elk Creek 6250 -M .2 * 11.0 17.5 63 North Fork Jocko 6330 24.6 34.1 72 40.5 54.5 74 Peterson Meadows 7200 4.5 7.6 59 15.8 16.4 96 Skalkaho Summit 7250 5.1 13.2 39 20.1 26.4 76 Stuart Mountain 7400 20.3 28.7 71 27.7 36.4 76 Warm Springs 7800 17.1 21.4 80 22.8 28.1 81 ----- ----- Basin Index (%) 57 76 BITTERROOT RIVER BASIN Daly Creek 5780 -M .0 * 15.6 16.4 95 Lolo Pass 5240 1.6 8.2 20 28.8 39.0 74 Moose Creek 6200 .0 .0 * 17.1 23.4 73 Nez Perce Camp 5650 .0 .2 0* 22.5 24.3 93 Saddle Mtn. 7940 13.7 18.1 76 18.9 26.7 71 Skalkaho Summit 7250 5.1 13.2 39 20.1 26.4 76 Twelvemile Creek 5600 -M .0 * 29.3 38.3 77 Twin Lakes 6400 15.4 26.6 58 41.2 53.7 77 ----- ----- Basin Index (%) 54 78 LOWER CLARK FORK RIVER BASIN Bear Mountain 5400 35.8 49.8 72 64.2 78.2 82 Hoodoo Basin 6050 23.4 36.1 65 38.6 51.4 75 Humboldt Gulch 4250 -M .0 * 30.2 42.0 72 Lookout 5190 .1 11.2 1 29.1 42.2 69 Mosquito Ridge 5260 10.5 20.9 50 42.7 48.3 88 Poorman Creek 5100 10.3 22.3 46 45.1 62.3 72 Sleeping Woman 6150 .0 4.0 0 21.8 26.0 84 Stuart Mountain 7400 20.3 28.7 71 27.7 36.4 76 Sunset 5540 3.4 11.2 30 28.1 40.1 70 ----- ----- Basin Index (%) 56 77 JEFFERSON RIVER BASIN Albro Lake 8300 9.0 17.5 51 19.2 26.1 74 Barker Lakes 8250 11.4 14.2 80 18.9 21.2 89 Basin Creek 7180 .2 4.5 4 7.7 13.8 56 Beagle Springs 8850 2.8 1.5 187 13.2 13.8 96 Bloody Dick 7600 .0 .6 0* 14.2 18.1 78 Calvert Creek 6430 -M .0 * 11.0 13.4 82 Clover Meadow 8600 12.9 16.2 80 20.2 22.3 91 Darkhorse Lake 8945 24.1 29.3 82 28.2 33.0 85 Divide 7800 1.4 6.0 23 13.5 14.8 91 Frohner Meadow 6480 -M .2 * 12.1 14.1 86 JL Meadow 8800 8.6 -M * 14.9 -M * Lakeview Ridge 7400 -M .0 * 16.9 17.3 98 Lemhi Ridge 8100 .0 2.6 0 14.9 16.5 90 Lower Twin 7900 13.8 17.8 78 22.5 27.8 81 Moose Creek 6200 .0 .0 * 17.1 23.4 73 Mule Creek 8300 7.9 14.4 55 14.0 20.6 68 Rocker Peak 8000 8.4 13.9 60 14.0 17.4 80 Saddle Mtn. 7940 13.7 18.1 76 18.9 26.7 71 Short Creek 7000 -M .0 * 10.0 10.2 98 Slagamelt Lakes 8620 -M -M * 29.1 -M * White Elephant 7710 11.2 18.2 62 32.8 34.1 96 ----- ----- Basin Index (%) 67 83 MADISON RIVER BASIN Albro Lake 8300 9.0 17.5 51 19.2 26.1 74 Beaver Creek 7850 8.9 13.8 64 20.3 25.2 81 Black Bear 8170 29.0 36.0 81 41.8 42.8 98 Canyon 7870 2.9 -M * 15.9 -M * Carrot Basin 9000 20.6 25.8 80 28.5 33.2 86 Clover Meadow 8600 12.9 16.2 80 20.2 22.3 91 Lone Mountain 8880 15.0 17.2 87 20.4 22.7 90 Lower Twin 7900 13.8 17.8 78 22.5 27.8 81 Madison Plateau 7750 12.4 15.8 78 26.2 30.6 86 Tepee Creek 8000 .2 7.0 3 15.6 17.8 88 West Yellowstone 6700 -M .0 * 15.1 16.8 90 Whiskey Creek 6800 3.9 6.0 65 21.6 24.4 89 ----- ----- Basin Index (%) 73 87 GALLATIN RIVER BASIN Beaver Creek 7850 8.9 13.8 64 20.3 25.2 81 Brackett Creek 7320 5.2 17.0 31 24.0 32.2 75 Carrot Basin 9000 20.6 25.8 80 28.5 33.2 86 Lick Creek 6860 5.6 2.0 280 20.3 20.6 99 Lone Mountain 8880 15.0 17.2 87 20.4 22.7 90 Sacajawea 6550 .1 1.1 9* 23.0 30.0 77 Shower Falls 8100 21.6 23.1 94 30.1 30.4 99 ----- ----- Basin Index (%) 77 86 HELENA VALLEY Boulder Mountain 7950 6.9 14.8 47 20.9 27.0 77 Frohner Meadow 6480 -M .2 * 12.1 14.1 86 Nevada Ridge 7020 4.2 8.7 48 14.4 18.8 77 Tizer Basin 6880 -M .0 * 12.9 15.0 86 ----- ----- Basin Index (%) 47 81 SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS Boulder Mountain 7950 6.9 14.8 47 20.9 27.0 77 Crystal Lake 6050 -M 4.6 * -M 24.8 * Daisy Peak 7600 5.0 7.6 66 13.6 15.5 88 Deadman Creek 6450 .0 .0 * 14.1 16.2 87 Elk Peak 7600 -M -M * -M -M * Onion Park 7410 8.3 9.8 85 19.2 23.1 83 Pickfoot Creek 6650 -M -M * 15.0 -M * Spur Park 8100 15.8 20.4 77 19.6 22.6 87 Stringer Creek 6550 2.3 1.0 230* 17.4 19.3 90 ----- ----- Basin Index (%) 71 85 SUN, TETON AND MARIAS RIVER BASINS Badger Pass 6900 9.4 26.8 35 26.4 37.1 71 Dupuyer Creek 5750 .0 .1 0* 14.6 16.1 91 Mount Lockhart 6400 7.0 11.6 60 23.5 29.4 80 Pike Creek 5930 .0 -M * 26.7 -M * Waldron 5600 -M .0 * 15.3 19.8 77 Wood Creek 5960 -M 1.0 * 12.6 18.6 68 ----- ----- Basin Index (%) 43* 76 ST. MARYS RIVER BASIN Flattop Mtn. 6300 33.1 41.7 79 48.7 59.2 82 Many Glacier 4900 .1 .0 * 30.2 34.0 89 ----- ----- Basin Index (%) 80 85 MILK RIVER BASIN Rocky Boy 4700 -M .0 * 21.9 14.4 152 ----- ----- Basin Index (%) * 152 UPPER YELLOWSTONE RIVER BASIN Beartooth Lake 9360 19.0 23.7 80 20.9 25.2 83 Box Canyon 6670 .0 .0 * 17.0 15.8 108 Brackett Creek 7320 5.2 17.0 31 24.0 32.2 75 Burnt Mtn 5880 -M .0 * 18.2 18.2 100 Canyon 7870 2.9 -M * 15.9 -M * Cole Creek 7850 7.3 14.8 49 14.0 17.8 79 East Boulder Mine 6335 -M .0 * 18.1 18.0 101 Evening Star 9200 17.0 24.0 71 30.8 33.8 91 Fisher Creek 9100 23.3 36.0 65 31.9 40.9 78 Monument Peak 8850 13.9 19.6 71 24.2 27.2 89 Northeast Entrance 7350 .0 .0 * 14.3 16.2 88 Parker Peak 9400 20.0 19.8 101 27.0 24.0 112 Placer Basin 8830 13.3 17.6 76 23.4 24.8 94 Porcupine 6500 -M .0 * 15.4 16.6 93 Sacajawea 6550 .1 1.1 9* 23.0 30.0 77 Shower Falls 8100 21.6 23.1 94 30.1 30.4 99 S Fork Shields 8100 8.8 15.6 56 24.9 27.8 90 Sylvan Lake 8420 8.1 13.7 59 27.4 28.0 98 Thumb Divide 7980 4.2 2.2 191 20.8 22.3 93 Two Ocean Plateau 9240 27.3 30.4 90 30.8 31.2 99 White Mill 8700 16.4 24.0 68 22.4 27.6 81 Wolverine 7650 -M .0 * 15.9 15.4 103 ----- ----- Basin Index (%) 73 91 BIGHORN RIVER BASIN (WYOMING) Bald Mtn. 9380 18.6 19.2 97 18.6 20.3 92 Bear Trap Meadow 8200 -M .0 * 13.3 12.6 106 Blackwater 9780 23.7 23.0 103 28.3 27.8 102 Bone Springs Div 9350 16.2 15.1 107 16.8 19.5 86 Burroughs Creek 8750 .3 -M * 13.9 -M * Castle Creek 8400 .0 .0 * 10.2 11.8 86 Cold Springs 9630 .0 .0 * 14.8 13.5 110 Deer Park 9700 17.8 11.4 156 26.9 23.5 114 Evening Star 9200 17.0 24.0 71 30.8 33.8 91 Grave Springs 8550 3.0 4.4 68 14.4 13.3 108 Hobbs Park 10100 20.6 15.4 134 24.2 18.8 129 Kirwin 9550 10.4 10.1 103 20.0 16.6 120 Little Warm 9370 5.0 4.2 119 17.5 15.5 113 Marquette 8760 13.8 4.9 282 22.8 15.1 151 Middle Powder 7760 9.1 4.8 190 15.3 14.0 109 Owl Creek 8975 -M .0 * 12.2 9.6 127 Powder River Pass 9480 4.2 7.2 58 16.5 17.4 95 Shell Creek 9580 15.8 15.0 105 18.8 17.6 107 South Pass 9040 13.1 9.2 142 23.5 20.2 116 St. Lawrence Alt 8620 -M -M * 14.8 -M * Sylvan Lake 8420 8.1 13.7 59 27.4 28.0 98 Sylvan Road 7120 -M .0 * 17.5 19.3 91 Timber Creek 7950 2.4 .0 * 17.0 12.2 139 Togwotee Pass 9580 19.4 23.2 84 25.2 29.0 87 Townsend Creek 8700 7.6 1.6 475 19.7 15.7 125 Younts Peak 8350 1.0 8.8 11 18.5 18.4 101 ----- ----- Basin Index (%) 105 106 TONGUE RIVER BASIN (WYOMING) Big Goose 7990 5.4 5.7 95 17.4 16.3 107 Bone Springs Div 9350 16.2 15.1 107 16.8 19.5 86 Burgess Junction 7880 7.4 8.2 90 17.5 16.5 106 Dome Lake 8880 -M 7.6 * 18.8 19.5 96 Little Goose 8870 9.5 7.4 128 20.5 17.6 116 Sucker Creek 8880 9.2 8.6 107 22.0 20.6 107 Tie Creek 6870 -M .0 * 17.2 16.4 105 ----- ----- Basin Index (%) 106 103 POWDER RIVER BASIN (WYOMING) Bear Trap Meadow 8200 -M .0 * 13.3 12.6 106 Cloud Peak Reservoir 9860 16.3 14.6 112 22.2 19.7 113 Grave Springs 8550 3.0 4.4 68 14.4 13.3 108 Hansen Sawmill 8360 -M .1 * 13.9 13.2 105 Middle Powder 7760 9.1 4.8 190 15.3 14.0 109 Powder River Pass 9480 4.2 7.2 58 16.5 17.4 95 Soldier Park 8720 .1 .0 * 14.3 12.8 112 ----- ----- Basin Index (%) 105 107 Missouri River Basin ab Ft. Peck Albro Lake 8300 9.0 17.5 51 19.2 26.1 74 Badger Pass 6900 9.4 26.8 35 26.4 37.1 71 Barker Lakes 8250 11.4 14.2 80 18.9 21.2 89 Basin Creek 7180 .2 4.5 4 7.7 13.8 56 Beagle Springs 8850 2.8 1.5 187 13.2 13.8 96 Beaver Creek 7850 8.9 13.8 64 20.3 25.2 81 Black Bear 8170 29.0 36.0 81 41.8 42.8 98 Bloody Dick 7600 .0 .6 0* 14.2 18.1 78 Boulder Mountain 7950 6.9 14.8 47 20.9 27.0 77 Brackett Creek 7320 5.2 17.0 31 24.0 32.2 75 Calvert Creek 6430 -M .0 * 11.0 13.4 82 Canyon 7870 2.9 -M * 15.9 -M * Carrot Basin 9000 20.6 25.8 80 28.5 33.2 86 Clover Meadow 8600 12.9 16.2 80 20.2 22.3 91 Crystal Lake 6050 -M 4.6 * -M 24.8 * Daisy Peak 7600 5.0 7.6 66 13.6 15.5 88 Darkhorse Lake 8945 24.1 29.3 82 28.2 33.0 85 Deadman Creek 6450 .0 .0 * 14.1 16.2 87 Divide 7800 1.4 6.0 23 13.5 14.8 91 Dupuyer Creek 5750 .0 .1 0* 14.6 16.1 91 Elk Peak 7600 -M -M * -M -M * Frohner Meadow 6480 -M .2 * 12.1 14.1 86 JL Meadow 8800 8.6 -M * 14.9 -M * Lakeview Ridge 7400 -M .0 * 16.9 17.3 98 Lemhi Ridge 8100 .0 2.6 0 14.9 16.5 90 Lick Creek 6860 5.6 2.0 280 20.3 20.6 99 Lone Mountain 8880 15.0 17.2 87 20.4 22.7 90 Lower Twin 7900 13.8 17.8 78 22.5 27.8 81 Madison Plateau 7750 12.4 15.8 78 26.2 30.6 86 Moose Creek 6200 .0 .0 * 17.1 23.4 73 Mount Lockhart 6400 7.0 11.6 60 23.5 29.4 80 Mule Creek 8300 7.9 14.4 55 14.0 20.6 68 Nevada Ridge 7020 4.2 8.7 48 14.4 18.8 77 Onion Park 7410 8.3 9.8 85 19.2 23.1 83 Pickfoot Creek 6650 -M -M * 15.0 -M * Pike Creek 5930 .0 -M * 26.7 -M * Rocker Peak 8000 8.4 13.9 60 14.0 17.4 80 Sacajawea 6550 .1 1.1 9* 23.0 30.0 77 Saddle Mtn. 7940 13.7 18.1 76 18.9 26.7 71 Short Creek 7000 -M .0 * 10.0 10.2 98 Shower Falls 8100 21.6 23.1 94 30.1 30.4 99 Slagamelt Lakes 8620 -M -M * 29.1 -M * Spur Park 8100 15.8 20.4 77 19.6 22.6 87 Stringer Creek 6550 2.3 1.0 230* 17.4 19.3 90 Tepee Creek 8000 .2 7.0 3 15.6 17.8 88 Tizer Basin 6880 -M .0 * 12.9 15.0 86 Waldron 5600 -M .0 * 15.3 19.8 77 West Yellowstone 6700 -M .0 * 15.1 16.8 90 Whiskey Creek 6800 3.9 6.0 65 21.6 24.4 89 White Elephant 7710 11.2 18.2 62 32.8 34.1 96 Wood Creek 5960 -M 1.0 * 12.6 18.6 68 ----- ----- Basin Index (%) 68 84 Yellowstone River Basin ab Glendive Bald Mtn. 9380 18.6 19.2 97 18.6 20.3 92 Bear Trap Meadow 8200 -M .0 * 13.3 12.6 106 Beartooth Lake 9360 19.0 23.7 80 20.9 25.2 83 Big Goose 7990 5.4 5.7 95 17.4 16.3 107 Blackwater 9780 23.7 23.0 103 28.3 27.8 102 Bone Springs Div 9350 16.2 15.1 107 16.8 19.5 86 Box Canyon 6670 .0 .0 * 17.0 15.8 108 Brackett Creek 7320 5.2 17.0 31 24.0 32.2 75 Burgess Junction 7880 7.4 8.2 90 17.5 16.5 106 Burnt Mtn 5880 -M .0 * 18.2 18.2 100 Burroughs Creek 8750 .3 -M * 13.9 -M * Canyon 7870 2.9 -M * 15.9 -M * Castle Creek 8400 .0 .0 * 10.2 11.8 86 Cloud Peak Reservoir 9860 16.3 14.6 112 22.2 19.7 113 Cold Springs 9630 .0 .0 * 14.8 13.5 110 Cole Creek 7850 7.3 14.8 49 14.0 17.8 79 Deer Park 9700 17.8 11.4 156 26.9 23.5 114 Dome Lake 8880 -M 7.6 * 18.8 19.5 96 East Boulder Mine 6335 -M .0 * 18.1 18.0 101 Evening Star 9200 17.0 24.0 71 30.8 33.8 91 Fisher Creek 9100 23.3 36.0 65 31.9 40.9 78 Grave Springs 8550 3.0 4.4 68 14.4 13.3 108 Hansen Sawmill 8360 -M .1 * 13.9 13.2 105 Hobbs Park 10100 20.6 15.4 134 24.2 18.8 129 Kirwin 9550 10.4 10.1 103 20.0 16.6 120 Little Goose 8870 9.5 7.4 128 20.5 17.6 116 Little Warm 9370 5.0 4.2 119 17.5 15.5 113 Marquette 8760 13.8 4.9 282 22.8 15.1 151 Middle Powder 7760 9.1 4.8 190 15.3 14.0 109 Monument Peak 8850 13.9 19.6 71 24.2 27.2 89 Northeast Entrance 7350 .0 .0 * 14.3 16.2 88 Owl Creek 8975 -M .0 * 12.2 9.6 127 Parker Peak 9400 20.0 19.8 101 27.0 24.0 112 Placer Basin 8830 13.3 17.6 76 23.4 24.8 94 Porcupine 6500 -M .0 * 15.4 16.6 93 Powder River Pass 9480 4.2 7.2 58 16.5 17.4 95 S Fork Shields 8100 8.8 15.6 56 24.9 27.8 90 Sacajawea 6550 .1 1.1 9* 23.0 30.0 77 Shell Creek 9580 15.8 15.0 105 18.8 17.6 107 Shower Falls 8100 21.6 23.1 94 30.1 30.4 99 Soldier Park 8720 .1 .0 * 14.3 12.8 112 South Pass 9040 13.1 9.2 142 23.5 20.2 116 St. Lawrence Alt 8620 -M -M * 14.8 -M * Sucker Creek 8880 9.2 8.6 107 22.0 20.6 107 Sylvan Lake 8420 8.1 13.7 59 27.4 28.0 98 Sylvan Road 7120 -M .0 * 17.5 19.3 91 Thumb Divide 7980 4.2 2.2 191 20.8 22.3 93 Tie Creek 6870 -M .0 * 17.2 16.4 105 Timber Creek 7950 2.4 .0 * 17.0 12.2 139 Togwotee Pass 9580 19.4 23.2 84 25.2 29.0 87 Townsend Creek 8700 7.6 1.6 475 19.7 15.7 125 Two Ocean Plateau 9240 27.3 30.4 90 30.8 31.2 99 White Mill 8700 16.4 24.0 68 22.4 27.6 81 Wolverine 7650 -M .0 * 15.9 15.4 103 Younts Peak 8350 1.0 8.8 11 18.5 18.4 101 ----- ----- Basin Index (%) 90 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.