Western US SNOTEL Snow/Precipitation Update Report

Western US SNOTEL Snow/Precipitation Update Report

Based on Mountain Data from NRCS SNOTEL Sites

**Provisional data, subject to revision**

Data based on the first reading of the day (typically 00:00) for Monday, January 19, 2026

State River Basin	Snow Water Equivalent		Water Year-to-Date Precipitation
State River Basin	# of Sites	Percent of Median	# of Sites	Percent of Median
ALASKA
ANCHORAGE/SHIP CREEK BASIN	4/4	72	3/4	88
SUSITNA BASIN	2/5	72	4/5	91
NORTHERN KENAI MOUNTAINS	4/7	78	6/7	97
SOUTHERN KENAI	2/6	76	5/6	73
COPPER BASIN	2/3	99	2/3	121
PRINCE WILLIAM SOUND	1/7	48	2/7	87
CHENA BASIN	6/7	120	6/7	163
UPPER TANANA	2/5	125	2/5	137
KOYUKUK BASIN	2/6	58	4/6	124
CENTRAL YUKON BASIN	0/5	*	2/5	125
NORTON SOUND	0/4	*	2/4	117
KUPARUK-SAGAVANIRKTOK RIVER BASIN	0/3	*	3/3	126
NORTHWEST ARCTIC RIVER BASIN	0/1	*	1/1	132
SOUTHEAST ALASKA BASIN	1/3	101	2/3	115
ARIZONA
VERDE RIVER BASIN	9/10	24	8/10	146
SAN FRANCISCO PEAKS	1/1	112	1/1	154
CENTRAL MOGOLLON RIM	4/4	20	4/4	130
LITTLE COLORADO RIVER BASIN	11/11	40	11/11	120
SALT RIVER BASIN	9/10	23	8/10	91
SAN FRANCISCO / UPPER GILA RIVER BASIN	8/8	33	7/8	91
CHUSKA MOUNTAINS	2/2	19	2/2	87
CALIFORNIA
NORTHERN GREAT BASIN	7/8	28	7/8	100
TRUCKEE RIVER	11/12	87	11/12	147
LAKE TAHOE	11/11	84	11/11	140
CARSON RIVER	11/13	87	12/13	135
WALKER RIVER	7/8	104	7/8	140
COLORADO
GUNNISON RIVER BASIN	15/18	58	15/18	91
UPPER COLORADO RIVER BASIN	31/36	56	31/36	74
SOUTH PLATTE RIVER BASIN	20/22	61	20/22	74
LARAMIE AND NORTH PLATTE RIVER BASINS	12/12	73	12/12	84
YAMPA AND WHITE RIVER BASINS	19/22	70	20/22	87
ARKANSAS RIVER BASIN	11/11	47	11/11	80
UPPER RIO GRANDE BASIN	17/22	51	18/22	96
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS	17/22	52	17/22	103
IDAHO
NORTHERN PANHANDLE REGION	8/10	73	9/10	128
COEUR D'ALENE-ST. JOE RIVER BASIN	7/7	54	7/7	121
CLEARWATER BASIN	13/16	70	13/16	116
SALMON BASIN	20/20	96	20/20	119
WEISER BASIN	4/4	59	4/4	109
PAYETTE BASIN	12/12	74	12/12	117
BOISE BASIN	9/11	71	9/11	109
BIG WOOD BASIN	7/9	98	7/9	133
LITTLE WOOD BASIN	4/5	135	4/5	165
BIG LOST BASIN	5/5	147	5/5	161
LITTLE LOST	3/3	126	3/3	145
BIRCH, MEDICINE LODGE, BEAVER, CAMAS BASINS	4/4	91	4/4	143
HENRYS FORK, TETON BASINS	7/8	92	7/8	118
SNAKE BASIN ABOVE PALISADES	21/21	113	20/21	135
WILLOW, BLACKFOOT, PORTNEUF BASINS	6/7	69	6/7	124
SNAKE BASIN ABOVE AMERICAN FALLS	28/29	101	27/29	127
RAFT BASIN	1/2	85	2/2	98
GOOSE CREEK BASIN	2/2	51	2/2	86
SALMON FALLS BASIN	4/6	51	4/6	96
BRUNEAU BASIN	5/8	48	5/8	96
OWYHEE BASIN	7/12	19	9/12	87
BEAR RIVER BASIN	20/21	95	21/21	126
MONTANA
KOOTENAI RIVER BASIN	7/8	89	8/8	143
FLATHEAD RIVER BASIN	13/17	102	13/17	134
UPPER CLARK FORK RIVER BASIN	14/14	104	14/14	134
BITTERROOT RIVER BASIN	6/8	91	6/8	127
LOWER CLARK FORK RIVER BASIN	8/9	81	9/9	132
JEFFERSON RIVER BASIN	19/21	90	18/21	118
MADISON RIVER BASIN	12/12	100	12/12	127
GALLATIN RIVER BASIN	7/7	99	7/7	120
MISSOURI HEADWATERS	31/31	94	30/31	122
HELENA VALLEY	4/4	98	4/4	130
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS	7/9	90	7/9	103
SUN, TETON AND MARIAS RIVER BASINS	5/6	104	5/6	162
MISSOURI MAINSTEM RIVER BASIN	18/21	94	18/21	130
ST. MARYS RIVER BASIN	2/2	98	2/2	149
MILK RIVER BASIN	1/1	43	1/1	128
UPPER YELLOWSTONE RIVER BASIN	22/22	109	21/22	133
WIND RIVER BASIN (WYOMING)	11/13	116	11/13	143
SHOSHONE RIVER BASIN (WYOMING)	6/6	111	6/6	142
BIGHORN RIVER BASIN (WYOMING)	24/26	105	24/26	134
TONGUE RIVER BASIN (WYOMING)	7/7	67	7/7	109
POWDER RIVER BASIN (WYOMING)	7/7	80	7/7	132
LOWER YELLOWSTONE RIVER BASIN	33/35	97	33/35	130
NEVADA
NORTHERN GREAT BASIN	7/8	28	7/8	100
SNAKE RIVER	7/11	49	7/11	92
OWYHEE RIVER	5/10	24	7/10	88
UPPER HUMBOLDT RIVER	9/17	38	10/17	88
LOWER HUMBOLDT RIVER	6/10	31	7/10	103
CLOVER VALLEY & FRANKLIN RIVER	5/7	39	5/7	89
EASTERN NEVADA BASINS	5/14	73	5/14	126
SOUTHERN NEVADA - Spring Mountains	3/3	53	3/3	252
NEW MEXICO
RIO CHAMA RIVER BASIN	4/5	58	4/5	82
UPPER RIO GRANDE BASIN - New Mexico	10/12	39	10/12	69
SANGRE DE CRISTO MOUNTAIN RANGE BASINS	10/11	43	10/11	67
JEMEZ RIVER BASIN	3/4	24	3/4	82
SAN FRANCISCO RIVER BASIN	6/6	39	5/6	90
GILA RIVER BASIN	3/3	35	3/3	91
MIMBRES RIVER BASIN	2/2	28	2/2	100
PECOS RIVER BASIN	3/3	44	3/3	71
SAN JUAN RIVER BASIN	10/13	47	10/13	107
ANIMAS RIVER BASIN	4/7	49	4/7	101
CANADIAN RIVER BASIN	6/7	27	6/7	54
ZUNI/BLUEWATER RIVER BASIN	1/1	38	1/1	91
RIO HONDO BASIN	1/1	27	1/1	75
CHUSKA MOUNTAINS	2/2	19	2/2	87
OREGON
OWYHEE	7/12	19	9/12	87
MALHEUR	3/3	45	3/3	88
GRANDE RONDE, POWDER, BURNT, IMNAHA	18/19	47	18/19	96
UMATILLA, WALLA WALLA, WILLOW	9/10	36	9/10	99
JOHN DAY	13/13	32	13/13	87
UPPER DESCHUTES, CROOKED	14/14	33	14/14	82
HOOD, SANDY, LOWER DESCHUTES	9/10	37	9/10	106
COAST RANGE	2/2	125	2/2	109
WILLAMETTE	21/23	31	21/23	89
ROGUE, UMPQUA	12/13	34	11/13	80
KLAMATH	17/20	32	17/20	87
LAKE COUNTY, GOOSE LAKE	5/7	34	6/7	98
HARNEY	11/12	28	11/12	96
UTAH
RAFT RIVER	1/2	85	2/2	98
BEAR RIVER	24/26	89	25/26	125
WEBER-OGDEN RIVERS	19/23	60	20/23	107
PROVO R.-UTAH LAKE-JORDAN R.	15/26	61	18/26	99
TOOELE VALLEY-VERNON CREEK	2/4	26	2/4	90
NORTHEASTERN UINTAHS	11/13	74	11/13	103
DUCHESNE RIVER	14/15	78	14/15	108
PRICE-SAN RAFAEL	7/14	57	8/14	90
DIRTY DEVIL	5/9	48	5/9	83
SOUTH EASTERN UTAH	5/12	53	5/12	104
UPPER SEVIER RIVER	17/23	51	18/23	100
SAN PITCH RIVER	6/12	53	6/12	85
LOWER SEVIER RIVER	3/5	26	3/5	78
BEAVER RIVER	3/3	48	3/3	84
ESCALANTE RIVER	4/5	64	4/5	111
SOUTHWESTERN UTAH	10/13	50	10/13	143
WASHINGTON
SPOKANE	8/9	51	9/9	119
LOWER PEND OREILLE	5/5	65	5/5	120
UPPER COLUMBIA	7/9	109	6/9	142
CENTRAL COLUMBIA	11/11	76	9/11	133
UPPER YAKIMA	7/7	42	7/7	124
NACHES	8/8	54	7/8	121
LOWER YAKIMA	2/4	64	3/4	122
KLICKITAT	3/5	58	4/5	115
LOWER SNAKE, WALLA WALLA	13/14	49	13/14	97
LOWER COLUMBIA	15/17	50	14/17	115
SOUTH PUGET SOUND	12/14	44	11/14	128
CENTRAL PUGET SOUND	9/9	51	9/9	127
NORTH PUGET SOUND	12/13	93	10/13	131
OLYMPIC	4/4	44	4/4	99
WYOMING
SNAKE RIVER	21/22	113	20/22	135
MADISON HEADWATERS IN WYOMING	5/5	100	5/5	134
YELLOWSTONE HEADWATERS IN WYOMING	12/12	125	11/12	147
WIND RIVER	9/11	118	9/11	140
BIGHORN BASIN	11/11	87	11/11	122
SHOSHONE RIVER	6/6	111	6/6	142
POWDER RIVER	7/7	80	7/7	132
TONGUE RIVER	7/7	67	7/7	109
BELLE FOURCHE	3/3	58	3/3	146
CHEYENNE RIVER BASIN	2/2	71	2/2	147
UPPER N. PLATTE	19/20	74	19/20	89
SWEETWATER	3/3	117	3/3	121
LOWER N. PLATTE	4/4	42	4/4	91
LARAMIE RIVER	7/7	61	7/7	80
S. PLATTE	1/1	4	1/1	61
LITTLE SNAKE RIVER	8/9	75	8/9	96
UPPER GREEN RIVER	14/15	116	14/15	133
LOWER GREEN RIVER	10/12	94	10/12	114
UPPER BEAR RIVER	11/12	90	12/12	119

-M = Missing data.
* = Analysis may not provide a valid measure of conditions.
N/A = Not available.

Footnotes for median and average:
(##) = If less than 30 years are available, this value specifies the number of years used for the median and average calculations.
Sites with less than 10 years available do not have medians or averages.

If the Basin Index (%) percent 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 represents the depth of water in the snowpack, if the
snowpack were melted, expressed in inches.

The WATER YEAR-TO-DATE-PRECIPITATION represents total precipitation since October 1st, expressed in inches.

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 normals 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.