Wyoming SNOTEL Snow/Precipitation Update Report

Wyoming 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 Tuesday, September 16, 2025

Basin Site Name	Elev (ft)	Snow Water Equivalent			Water Year-to-Date Precipitation
Basin Site Name	Elev (ft)	Current (in)	Median (in)	Pct of Median	Current (in)	Median (in)	Pct of Median
SNAKE RIVER
Base Camp	7040	0.0	0.0	*	28.2	31.6	89
Blind Bull Sum	8880	0.0	0.0	*	23.3	28.2	83
Cottonwood Creek	7710	0.0	0.0	*	37.0	38.4	96
East Rim Divide	8010	0.0	0.0	*	17.8	19.0	94
Grand Targhee	9260	0.0	0.0₍₁₄₎	*	42.2	50.2₍₁₄₎	84
Granite Creek	6770	0.0	0.0	*	24.9	29.8	84
Grassy Lake	7330	0.0	0.0	*	43.1	50.2	86
Gros Ventre Summit	8760	0.0	0.0	*	18.8	21.4	88
Gunsight Pass	9830	0.0	0.0₍₂₂₎	*	20.7	24.2₍₂₂₎	86
Lewis Lake Divide	7880	0.0	0.0	*	43.8	48.0	91
Loomis Park	8240	0.0	0.0	*	24.5	27.3	90
Phillips Bench	8160	0.0	0.0	*	35.7	39.8	90
Salt River Summit	7630	0.0	0.0	*	18.4	25.2	73
Snake River Station	6900	0.0	0.0	*	29.3	34.3	85
Somsen Ranch	6830	0.0	0.0	*	21.8	25.6	85
Spring Creek Divide	9020	0.0	0.0	*	31.9	35.0	91
Thumb Divide	7970	0.0	0.0	*	23.8	28.5	84
Togwotee Pass	9590	0.0	0.0	*	37.0	37.0	100
Triple Peak	8520	0.0	0.0	*	35.0	38.1	92
Two Ocean Plateau	9240	0.0	0.0	*	37.0	40.6	91
Willow Creek	8060	0.0	0.0	*	47.5	50.8	94
Younts Peak	8340	0.0	0.0₍₂₉₎	*	22.0	27.0₍₂₈₎	81
Basin Index (%)		*			88
MADISON HEADWATERS IN WYOMING
Black Bear	8160	0.0	0.0	*	45.4	53.1	85
Canyon	7870	0.0	0.0	*	20.6	26.9₍₂₉₎	77
Madison Plateau	7710	0.0	0.0	*	34.8	39.8	87
West Yellowstone	6680	0.0	0.0	*	19.8	23.8₍₂₂₎	83
Whiskey Creek	6790	0.0	0.0	*	28.1	32.8	86
Basin Index (%)		*			84
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake	9360	0.0	0.0	*	30.5	34.0	90
Canyon	7870	0.0	0.0	*	20.6	26.9₍₂₉₎	77
Evening Star	9040	0.0	0.0	*	39.7	42.9	93
Fisher Creek	9110	0.0	0.0	*	42.3	51.0	83
Monument Peak	8740	0.1	0.0	*	30.8	37.0	83
Northeast Entrance	7420	0.3	0.0	*	22.2	23.9	93
Parker Peak	9420	0.0	0.0	*	34.8	32.1	108
Sylvan Lake	8440	0.0	0.0	*	33.0	37.8	87
Thumb Divide	7970	0.0	0.0	*	23.8	28.5	84
Two Ocean Plateau	9240	0.0	0.0	*	37.0	40.6	91
White Mill	8730	0.0	0.0	*	31.4	38.2	82
Wolverine	7650	0.0	0.0	*	23.9	22.0	109
Basin Index (%)		*			89
WIND RIVER
Burroughs Creek	8760	0.0	N/A	*	23.1	N/A	*
Castle Creek	8410	0.2	0.0₍₁₁₎	*	14.7	17.4₍₁₀₎	84
Cold Springs	9640	0.0	0.0	*	15.7	20.0	78
Deer Park	9690	0.0	0.0₍₂₃₎	*	29.2	29.6₍₂₃₎	99
Hobbs Park	10080	0.0	0.0	*	23.8	25.9	92
Kirwin	9580	0.0	0.0	*	25.8	25.6	101
Little Warm	9370	0.0	0.0	*	20.0	23.4	85
South Pass	9040	0.1	0.0	*	24.6	25.2	98
St. Lawrence Alt	8610	0.0	N/A	*	17.3	N/A	*
Togwotee Pass	9590	0.0	0.0	*	37.0	37.0	100
Townsend Creek	8720	0.2	0.0	*	22.3	24.6	91
Basin Index (%)		*			93
BIGHORN BASIN
Bald Mtn.	9360	0.0	0.0	*	27.9	29.7	94
Bear Trap Meadow	8200	0.1	0.0	*	19.6	19.4	101
Bone Springs Div	9340	0.0	0.0	*	20.8	28.8	72
Grave Springs	8560	0.0	0.0₍₂₉₎	*	16.7	18.8₍₂₈₎	89
Kirwin	9580	0.0	0.0	*	25.8	25.6	101
Marquette	8800	0.0	0.0	*	21.4	24.2	88
Middle Powder	7760	0.1	0.0	*	18.5	20.2	92
Owl Creek	8990	0.0	0.0	*	16.4	17.2	95
Powder River Pass	9480	0.0	0.0	*	23.7	26.6	89
Shell Creek	9570	0.1	0.0	*	23.4	26.2	89
Timber Creek	7910	0.0	0.0	*	20.2	21.8	93
Basin Index (%)		*			91
SHOSHONE RIVER
Blackwater	9840	0.1	0.0	*	32.3	35.4	91
Evening Star	9040	0.0	0.0	*	39.7	42.9	93
Marquette	8800	0.0	0.0	*	21.4	24.2	88
Sylvan Lake	8440	0.0	0.0	*	33.0	37.8	87
Sylvan Road	7140	0.0	0.0	*	21.2	26.3	81
Younts Peak	8340	0.0	0.0₍₂₉₎	*	22.0	27.0₍₂₈₎	81
Basin Index (%)		*			88
POWDER RIVER
Bear Trap Meadow	8200	0.1	0.0	*	19.6	19.4	101
Cloud Peak Reservoir	9830	0.0	0.0	*	27.6	28.8	96
Grave Springs	8560	0.0	0.0₍₂₉₎	*	16.7	18.8₍₂₈₎	89
Hansen Sawmill	8360	0.0	0.0	*	21.1	21.7	97
Middle Powder	7760	0.1	0.0	*	18.5	20.2	92
Powder River Pass	9480	0.0	0.0	*	23.7	26.6	89
Soldier Park	8680	0.0	0.0₍₁₁₎	*	19.5	21.6₍₁₀₎	90
Basin Index (%)		*			93
TONGUE RIVER
Big Goose	8010	0.2	0.0₍₂₃₎	*	24.1	23.8₍₂₂₎	101
Bone Springs Div	9340	0.0	0.0	*	20.8	28.8	72
Burgess Junction	7900	0.0	0.0	*	22.2	24.4	91
Dome Lake	8890	0.0	0.0	*	24.4	27.6	88
Little Goose	8560	0.1	0.0₍₁₁₎	*	27.1	27.0₍₁₀₎	100
Sucker Creek	8840	0.0	0.0	*	27.9	29.4	95
Tie Creek	7050	0.0	0.0₍₂₇₎	*	22.8	25.4₍₂₆₎	90
Basin Index (%)		*			91
BELLE FOURCHE
Blind Park	6900	0.0	0.0	*	29.3	26.6	110
Cole Canyon	5930	0.2	0.0₍₂₁₎	*	28.6	24.2₍₂₁₎	118
North Rapid Creek	6150	0.0	0.0₍₂₅₎	*	29.1	24.2₍₂₄₎	120
Basin Index (%)		*			116
CHEYENNE RIVER BASIN
Blind Park	6900	0.0	0.0	*	29.3	26.6	110
North Rapid Creek	6150	0.0	0.0₍₂₅₎	*	29.1	24.2₍₂₄₎	120
Basin Index (%)		*			115
UPPER N. PLATTE
Arapaho Ridge	10960	0.0	0.0₍₁₉₎	*	28.6	36.0₍₁₈₎	79
Blackhall Mtn	9830	0.0	0.0₍₁₁₎	*	40.2	43.0₍₁₁₎	93
Cinnabar Park	9670	0.0	0.0₍₁₇₎	*	30.8	34.1₍₁₇₎	90
Columbine	9170	0.2	0.0	*	33.8	36.6	92
Divide Peak	8700	0.2	0.0	*	-M	31.0	*
Joe Wright	10140	0.1	0.0	*	38.8	41.9	93
Laprele Creek	8370	0.0	0.0	*	18.0	22.4	80
Med Bow	10500	0.1	N/A	*	-M	N/A	*
Never Summer	10300	0.1	0.0₍₁₈₎	*	28.5	31.1₍₁₈₎	92
North French Creek	10150	0.0	0.0	*	40.2	42.2	95
Old Battle	9850	0.0	0.0	*	37.7	49.6	76
Rawah	9100	0.0	0.0₍₁₈₎	*	20.6	27.4₍₁₈₎	75
Sage Creek Basin	7830	0.0	0.0₍₁₉₎	*	20.2	21.0₍₁₉₎	96
Sand Lake	10080	0.0	0.0	*	-M	39.6	*
South Brush Creek	8480	0.0	0.0	*	17.9	24.3	74
Tower	10610	0.0	0.0	*	52.3	56.6	92
Webber Springs	9250	0.1	0.0	*	-M	39.2	*
Whiskey Park	8950	0.0	0.0	*	-M	41.0	*
Willow Creek Pass	9520	0.0	0.0	*	21.2	24.8	85
Zirkel	9320	0.0	0.0₍₁₈₎	*	37.1	41.8₍₁₈₎	89
Basin Index (%)		*			87
SWEETWATER
Deer Park	9690	0.0	0.0₍₂₃₎	*	29.2	29.6₍₂₃₎	99
Larsen Creek	8880	0.3	0.0₍₁₁₎	*	19.3	20.8₍₁₀₎	93
South Pass	9040	0.1	0.0	*	24.6	25.2	98
Basin Index (%)		*			97
LOWER N. PLATTE
Casper Mtn.	7940	0.0	0.0	*	21.4	24.4	88
Laprele Creek	8370	0.0	0.0	*	18.0	22.4	80
Reno Hill	8410	0.0	0.0	*	23.3	27.6	84
Windy Peak	7900	0.0	0.0	*	-M	21.8	*
Basin Index (%)		*			84
LARAMIE RIVER
Brooklyn Lake	10250	0.0	0.0	*	35.0	33.6	104
Cinnabar Park	9670	0.0	0.0₍₁₇₎	*	30.8	34.1₍₁₇₎	90
Crow Creek	8320	0.0	0.0₍₁₇₎	*	18.4	23.5₍₁₇₎	78
Deadman Hill	10240	0.1	0.0	*	29.6	29.3	101
Rawah	9100	0.0	0.0₍₁₈₎	*	20.6	27.4₍₁₈₎	75
Roach	9710	0.0	0.0	*	25.7	32.2	80
Windy Peak	7900	0.0	0.0	*	-M	21.8	*
Basin Index (%)		*			89
S. PLATTE
Crow Creek	8320	0.0	0.0₍₁₇₎	*	18.4	23.5₍₁₇₎	78
Basin Index (%)		*			78
LITTLE SNAKE RIVER
Battle Mountain	7460	0.2	0.0	*	20.3	23.8	85
Divide Peak	8700	0.2	0.0	*	-M	31.0	*
Elk River	8710	0.1	0.0	*	27.5	30.4	90
Elkhead Divide	8780	0.0	N/A	*	25.2	N/A	*
Little Snake River	8930	0.0	0.0₍₁₆₎	*	-M	46.5₍₁₆₎	*
Old Battle	9850	0.0	0.0	*	37.7	49.6	76
Sage Creek Basin	7830	0.0	0.0₍₁₉₎	*	20.2	21.0₍₁₉₎	96
Sandstone RS	8150	0.0	0.0	*	-M	26.8	*
Whiskey Park	8950	0.0	0.0	*	-M	41.0	*
Basin Index (%)		*			85
UPPER GREEN RIVER
Big Sandy Opening	9100	0.6	0.0	*	20.8	22.0	95
Blind Bull Sum	8880	0.0	0.0	*	23.3	28.2	83
East Rim Divide	8010	0.0	0.0	*	17.8	19.0	94
Elkhart Park G.S.	9410	0.0	0.0	*	19.5	22.6	86
Gros Ventre Summit	8760	0.0	0.0	*	18.8	21.4	88
Gunsight Pass	9830	0.0	0.0₍₂₂₎	*	20.7	24.2₍₂₂₎	86
Indian Creek	9400	0.0	0.0	*	28.5	30.6	93
Kendall R.S.	7790	0.0	0.0	*	20.3	20.9	97
Larsen Creek	8880	0.3	0.0₍₁₁₎	*	19.3	20.8₍₁₀₎	93
Loomis Park	8240	0.0	0.0	*	24.5	27.3	90
New Fork Lake	8380	0.0	0.0	*	-M	20.3	*
Pocket Creek	9370	-M	N/A	*	-M	N/A	*
Snider Basin	8080	0.1	0.0	*	19.4	21.4	91
Spring Creek Divide	9020	0.0	0.0	*	31.9	35.0	91
Triple Peak	8520	0.0	0.0	*	35.0	38.1	92
Basin Index (%)		*			90
LOWER GREEN RIVER
Blacks Fork Jct	8880	0.0	0.0₍₁₀₎	*	19.4	20.2₍₁₀₎	96
Buck Pasture	9620	0.0	N/A	*	-M	N/A	*
EF Blacks Fork GS	9360	0.0	0.0₍₁₀₎	*	19.2	23.2₍₁₀₎	83
Hams Fork	7870	0.0	0.0	*	16.5	19.0	87
Henrys Fork	10180	-M	N/A	*	19.4	N/A	*
Hewinta	9510	0.0	0.0	*	20.2	24.6	82
Hickerson Park	9130	0.0	0.0	*	17.3	20.6	84
Hole-in-Rock	9170	0.0	0.0	*	17.0	20.6	83
Indian Creek	9400	0.0	0.0	*	28.5	30.6	93
Kelley R.S.	8240	0.0	0.0	*	22.7	26.2	87
Spirit Lk	10240	0.0	0.0₍₁₂₎	*	23.0	29.5₍₁₁₎	78
Steel Creek Park	10140	0.0	0.0	*	22.7	29.2	78
Basin Index (%)		*			85
UPPER BEAR RIVER
Bear River RS	8510	0.0	0.0₍₁₀₎	*	16.8	20.6₍₁₀₎	82
Bug Lake	7980	0.0	0.0	*	24.2	26.8	90
Burts Miller Ranch	7900	0.0	0.0₍₁₂₎	*	16.0	13.0₍₁₁₎	123
Chalk Creek #1	9160	0.0	0.0	*	28.4	35.2	81
Giveout	6940	0.0	0.0	*	16.8	21.0	80
Hayden Fork	9160	0.0	0.0	*	25.6	33.8	76
Kelley R.S.	8240	0.0	0.0	*	22.7	26.2	87
Lily Lake	9130	0.0	0.0	*	18.8	27.0	70
Monte Cristo	8930	0.0	0.0	*	30.8	36.4	85
Salt River Summit	7630	0.0	0.0	*	18.4	25.2	73
Spring Creek Divide	9020	0.0	0.0	*	31.9	35.0	91
Trial Lake	9970	0.0	0.0	*	31.0	35.0	89
Basin Index (%)		*			84

-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.