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 Wednesday, May 20, 2026

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	*	26.3	24.6	107
Blind Bull Sum	8880	14.3	21.2	67	17.7	21.0	84
Cottonwood Creek	7710	0.0	7.9	0	29.1	30.0	97
East Rim Divide	8010	0.0	0.0	*	13.2	14.0	94
Grand Targhee	9260	29.7	43.4₍₁₄₎	68	36.3	38.4₍₁₄₎	95
Granite Creek	6770	0.0	0.0	*	22.5	22.6	100
Grassy Lake	7330	0.0	15.5	0	36.1	41.4	87
Gros Ventre Summit	8760	0.0	5.4	0	17.3	15.6	111
Gunsight Pass	9820	0.0	10.0₍₂₂₎	0	18.1	17.4₍₂₂₎	104
Lewis Lake Divide	7880	6.7	21.9	31	43.7	39.3	111
Loomis Park	8240	0.0	1.6	0	18.6	20.6	90
Phillips Bench	8170	4.0	19.4	21	30.9	31.2	99
Salt River Summit	7630	0.0	0.0	*	18.2	19.0	96
Snake River Station	6900	0.0	0.0	*	24.3	26.8	91
Somsen Ranch	6830	0.0	0.0	*	19.1	19.8	96
Spring Creek Divide	9020	16.4	20.8	79	28.4	28.0	101
Thumb Divide	7970	0.0	0.4	0*	23.6	22.4	105
Togwotee Pass	9590	13.6	22.8	60	32.8	29.2	112
Triple Peak	8520	0.0	10.4	0	31.1	30.6	102
Two Ocean Plateau	9240	30.3	29.4	103	36.6	31.2	117
Willow Creek	8060	0.0	17.5	0	37.1	40.2	92
Younts Peak	8340	0.0	8.2₍₂₈₎	0	24.4	18.8₍₂₈₎	130
Basin Index (%)		45			101
MADISON HEADWATERS IN WYOMING
Black Bear	8160	18.7	34.9	54	39.7	43.0	92
Canyon	7870	0.0	3.4	0	17.8	19.4	92
Madison Plateau	7710	6.4	14.4	44	30.3	30.6	99
West Yellowstone	6680	0.0	0.0	*	17.6	17.0₍₂₂₎	104
Whiskey Creek	6790	0.0	5.1	0	25.6	24.6	104
Basin Index (%)		43			97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake	9360	24.9	22.9	109	30.3	25.4	119
Canyon	7870	0.0	3.4	0	17.8	19.4	92
Evening Star	9030	20.3	22.8	89	39.1	34.0	115
Fisher Creek	9110	33.0	35.6	93	42.3	40.9	103
Monument Peak	8740	11.6	18.0	64	30.6	27.4	112
Northeast Entrance	7420	0.0	0.0	*	18.7	16.2	115
Parker Peak	9420	11.7	18.8	62	30.4	24.4	125
Sylvan Lake	8440	0.0	12.9	0	28.8	28.0	103
Thumb Divide	7970	0.0	0.4	0*	23.6	22.4	105
Two Ocean Plateau	9240	30.3	29.4	103	36.6	31.2	117
White Mill	8730	21.0	23.0	91	30.2	27.6	109
Wolverine	7660	0.0	0.0	*	18.7	15.5	121
Basin Index (%)		82			111
WIND RIVER
Burroughs Creek	8760	0.0	N/A	*	20.9	N/A	*
Castle Creek	8410	0.0	0.0₍₁₀₎	*	10.3	11.8₍₁₀₎	87
Cold Springs	9640	0.7	0.0	*	15.8	13.6	116
Deer Park	9690	1.4	10.2₍₂₂₎	14	22.0	23.9₍₂₃₎	92
Hobbs Park	10080	6.0	14.3	42	20.4	19.0	107
Kirwin	9580	0.0	8.8	0	22.2	17.2	129
Little Warm	9370	0.0	2.3	0	17.7	15.7	113
South Pass	9040	1.0	8.0	12	19.4	20.6	94
St. Lawrence Alt	8610	0.0	N/A	*	11.2	N/A	*
Togwotee Pass	9590	13.6	22.8	60	32.8	29.2	112
Townsend Creek	8720	0.8	0.8	100*	15.3	16.1	95
Basin Index (%)		35			105
BIGHORN BASIN
Bald Mtn.	9360	15.4	18.8	82	20.0	20.4	98
Bear Trap Meadow	8200	0.0	0.0	*	12.6	12.8	98
Bone Springs Div	9340	8.2	14.2	58	14.7	19.6	75
Grave Springs	8560	0.0	2.3₍₂₈₎	0	11.8	13.4₍₂₈₎	88
Kirwin	9580	0.0	8.8	0	22.2	17.2	129
Marquette	8800	0.0	3.6	0	9.9	15.4	64
Middle Powder	7760	0.0	4.0	0	13.3	14.2	94
Owl Creek	8990	0.0	0.0	*	8.6	9.8	88
Powder River Pass	9480	0.0	5.6	0	18.2	17.4	105
Shell Creek	9570	12.2	14.4	85	18.2	17.8	102
Timber Creek	7910	0.0	0.0	*	6.8	12.5	54
Basin Index (%)		50			92
SHOSHONE RIVER
Blackwater	9830	20.3	22.9	89	31.4	28.2	111
Evening Star	9030	20.3	22.8	89	39.1	34.0	115
Marquette	8800	0.0	3.6	0	9.9	15.4	64
Sylvan Lake	8440	0.0	12.9	0	28.8	28.0	103
Sylvan Road	7140	0.0	0.0	*	21.7	19.4	112
Younts Peak	8340	0.0	8.2₍₂₈₎	0	24.4	18.8₍₂₈₎	130
Basin Index (%)		58			108
POWDER RIVER
Bear Trap Meadow	8200	0.0	0.0	*	12.6	12.8	98
Cloud Peak Reservoir	9830	1.2	12.8	9	18.1	20.0	90
Grave Springs	8560	0.0	2.3₍₂₈₎	0	11.8	13.4₍₂₈₎	88
Hanson Sawmill	8360	0.0	0.0	*	12.2	13.2	92
Middle Powder	7760	0.0	4.0	0	13.3	14.2	94
Powder River Pass	9480	0.0	5.6	0	18.2	17.4	105
Soldier Park	8680	0.1	0.1₍₁₀₎	100*	10.2	13.1₍₁₀₎	78
Basin Index (%)		5			93
TONGUE RIVER
Big Goose	8010	0.0	4.1₍₂₂₎	0	13.3	16.4₍₂₂₎	81
Bone Springs Div	9340	8.2	14.2	58	14.7	19.6	75
Burgess Junction	7910	0.3	6.6	5	15.3	16.7	92
Dome Lake	8890	0.0	6.2	0	17.1	19.7	87
Little Goose	8560	0.7	6.3₍₁₀₎	11	16.8	17.7₍₁₀₎	95
Sucker Creek	8840	0.0	7.6	0	18.6	20.8	89
Tie Creek	7050	0.0	0.0₍₂₆₎	*	13.3	17.0₍₂₆₎	78
Basin Index (%)		20			85
BELLE FOURCHE
Blind Park	6900	0.0	0.0	*	14.0	15.1	93
Cole Canyon	5930	0.0	0.0₍₂₀₎	*	12.0	14.0₍₂₀₎	86
North Rapid Creek	6150	0.0	0.0₍₂₄₎	*	11.3	13.2₍₂₄₎	86
Basin Index (%)		*			88
CHEYENNE RIVER BASIN
Blind Park	6900	0.0	0.0	*	14.0	15.1	93
North Rapid Creek	6150	0.0	0.0₍₂₄₎	*	11.3	13.2₍₂₄₎	86
Basin Index (%)		*			89
UPPER N. PLATTE
Arapaho Ridge	10960	3.3	19.6₍₁₈₎	17	22.4	28.4₍₁₈₎	79
Blackhall Mtn	9830	1.8	28.7₍₁₁₎	6	28.5	39.4₍₁₁₎	72
Cinnabar Park	9670	3.0	12.6₍₁₇₎	24	24.1	28.8₍₁₇₎	84
Columbine	9170	0.0	1.2	0*	25.4	31.1	82
Divide Peak	8700	1.0	5.2	19	20.8	25.8	81
Joe Wright	10140	1.6	19.2	8	26.6	33.6	79
Laprele Creek	8370	1.0	0.0	*	15.1	16.8	90
Med Bow	10500	19.7	N/A	*	33.2	N/A	*
Never Summer	10300	10.3	20.0₍₁₈₎	52	16.2	22.2₍₁₈₎	73
North French Creek	10150	-M	29.2	*	30.2	35.8	84
Old Battle	9840	19.6	32.6	60	34.5	42.0	82
Rawah	9100	0.3	0.4₍₁₈₎	75*	16.0	20.2₍₁₈₎	79
Sage Creek Basin	7830	1.2	0.0₍₁₉₎	*	14.0	16.7₍₁₉₎	84
Sand Lake	10080	17.8	27.6	64	27.3	32.4	84
South Brush Creek	8480	0.3	0.0	*	12.9	19.0	68
Tower	10610	22.8	43.2	53	40.8	49.4	83
Webber Springs	9250	1.2	11.2	11	26.0	32.2	81
Whiskey Park	8950	1.1	22.6	5	31.0	36.0	86
Willow Creek Pass	9520	1.8	10.8	17	15.0	17.7	85
Zirkel	9320	1.3	9.3₍₁₈₎	14	31.5	35.9₍₁₈₎	88
Basin Index (%)		34			81
SWEETWATER
Deer Park	9690	1.4	10.2₍₂₂₎	14	22.0	23.9₍₂₃₎	92
Larsen Creek	8880	0.0	0.0₍₁₀₎	*	14.1	16.8₍₁₀₎	84
South Pass	9040	1.0	8.0	12	19.4	20.6	94
Basin Index (%)		13			91
LOWER N. PLATTE
Casper Mtn.	7940	2.5	3.0	83	14.3	18.8	76
Laprele Creek	8370	1.0	0.0	*	15.1	16.8	90
Reno Hill	8410	1.8	4.8	38	17.3	21.8	79
Windy Peak	7890	1.4	0.0	*	12.2	14.5	84
Basin Index (%)		86			82
LARAMIE RIVER
Brooklyn Lake	10250	2.6	16.6	16	26.2	28.0	94
Cinnabar Park	9670	3.0	12.6₍₁₇₎	24	24.1	28.8₍₁₇₎	84
Crow Creek	8320	0.9	0.0₍₁₇₎	*	12.9	14.4₍₁₇₎	90
Deadman Hill	10240	1.5	16.2	9	17.0	24.0	71
Rawah	9100	0.3	0.4₍₁₈₎	75*	16.0	20.2₍₁₈₎	79
Roach	9710	1.6	9.3	17	18.9	24.2	78
Windy Peak	7890	1.4	0.0	*	12.2	14.5	84
Basin Index (%)		21			83
S. PLATTE
Crow Creek	8320	0.9	0.0₍₁₇₎	*	12.9	14.4₍₁₇₎	90
Basin Index (%)		*			90
LITTLE SNAKE RIVER
Battle Mountain	7460	0.0	0.0	*	17.5	19.2	91
Divide Peak	8700	1.0	5.2	19	20.8	25.8	81
Elk River	8710	0.2	0.0	*	-M	23.7	*
Elkhead Divide	8780	0.8	N/A	*	-M	N/A	*
Little Snake River	8930	0.3	12.8₍₁₆₎	2	32.7	39.6₍₁₆₎	83
Old Battle	9840	19.6	32.6	60	34.5	42.0	82
Sage Creek Basin	7830	1.2	0.0₍₁₉₎	*	14.0	16.7₍₁₉₎	84
Sandstone RS	8150	0.0	0.0	*	17.8	21.7	82
Whiskey Park	8950	1.1	22.6	5	31.0	36.0	86
Basin Index (%)		32			84
UPPER GREEN RIVER
Big Sandy Opening	9100	0.1	3.0	3	15.0	16.4	91
Blind Bull Sum	8880	14.3	21.2	67	17.7	21.0	84
East Rim Divide	8010	0.0	0.0	*	13.2	14.0	94
Elkhart Park G.S.	9410	0.0	5.4	0	14.8	16.2	91
Gros Ventre Summit	8760	0.0	5.4	0	17.3	15.6	111
Gunsight Pass	9820	0.0	10.0₍₂₂₎	0	18.1	17.4₍₂₂₎	104
Indian Creek	9400	4.7	19.0	25	24.8	24.0	103
Kendall R.S.	7790	0.0	0.0	*	18.4	16.2	114
Larsen Creek	8880	0.0	0.0₍₁₀₎	*	14.1	16.8₍₁₀₎	84
Loomis Park	8240	0.0	1.6	0	18.6	20.6	90
New Fork Lake	8380	0.0	0.0	*	14.1	13.7	103
Pocket Creek	9370	-M	N/A	*	-M	N/A	*
Snider Basin	8080	0.0	0.0	*	16.7	16.2	103
Spring Creek Divide	9020	16.4	20.8	79	28.4	28.0	101
Triple Peak	8520	0.0	10.4	0	31.1	30.6	102
Basin Index (%)		37			98
LOWER GREEN RIVER
Blacks Fork Jct	8880	0.2	0.0₍₁₀₎	*	13.0	15.2₍₁₀₎	86
Buck Pasture	9630	0.0	N/A	*	17.7	N/A	*
EF Blacks Fork GS	9360	0.0	0.0₍₁₀₎	*	12.9	15.8₍₁₀₎	82
Hams Fork	7860	0.0	0.0	*	14.6	14.1	104
Henrys Fork	10180	-M	N/A	*	13.6	N/A	*
Hewinta	9510	0.3	0.0	*	14.1	17.2	82
Hickerson Park	9120	0.7	0.0	*	10.9	13.2	83
Hole-in-Rock	9170	0.7	0.0	*	11.7	13.4	87
Indian Creek	9400	4.7	19.0	25	24.8	24.0	103
Kelley R.S.	8240	0.3	2.1	14	20.4	20.4	100
Spirit Lk	10240	1.0	3.1₍₁₁₎	32	17.2	20.5₍₁₁₎	84
Steel Creek Park	10140	1.9	14.4	13	17.4	21.0	83
Basin Index (%)		25*			90
UPPER BEAR RIVER
Bear River RS	8510	0.0	0.0₍₁₀₎	*	13.4	14.6₍₁₀₎	92
Bug Lake	7980	0.4	5.2	8	24.0	20.3	118
Burts Miller Ranch	7900	0.0	0.0₍₁₁₎	*	13.0	9.4₍₁₁₎	138
Chalk Creek #1	9160	0.9	12.8	7	24.7	28.8	86
Giveout	6940	0.0	0.0	*	16.0	15.7	102
Hayden Fork	9170	0.0	0.0	*	22.3	24.8	90
Kelley R.S.	8240	0.3	2.1	14	20.4	20.4	100
Lily Lake	9130	0.0	0.0	*	15.3	20.4	75
Monte Cristo	8930	1.0	15.0	7	29.9	29.8	100
Salt River Summit	7630	0.0	0.0	*	18.2	19.0	96
Spring Creek Divide	9020	16.4	20.8	79	28.4	28.0	101
Trial Lake	9970	1.0	14.8	7	24.3	27.0	90
Basin Index (%)		28			97

-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.