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 Monday, March 31, 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	17.8	16.2	110	20.4	19.6	104
Blind Bull Sum	8880	26.1	23.6	111	18.3	17.5	105
Cottonwood Creek	7710	24.0	21.4	112	27.3	24.4	112
East Rim Divide	8010	10.3	10.3	100	11.3	10.9	104
Grand Targhee	9260	39.1	40.1₍₁₄₎	98	29.7	29.8₍₁₄₎	100
Granite Creek	6770	17.6	15.6	113	17.8	17.2	103
Grassy Lake	7330	31.1	31.6	98	34.0	33.4	102
Gros Ventre Summit	8760	12.7	12.6	101	12.9	11.8	109
Gunsight Pass	9830	13.5	12.6₍₂₂₎	107	13.3	13.2₍₂₂₎	101
Lewis Lake Divide	7880	31.7	30.0	106	34.3	31.8	108
Loomis Park	8240	14.4	15.3	94	16.2	16.4	99
Phillips Bench	8160	25.9	25.9	100	26.3	26.1	101
Salt River Summit	7630	15.0	13.4	112	13.4	15.3	88
Snake River Station	6900	19.0	16.8	113	21.5	21.3	101
Somsen Ranch	6830	13.3	11.4	117	16.2	16.3	99
Spring Creek Divide	9020	26.0	24.2	107	24.9	23.1	108
Thumb Divide	7970	14.4	15.8	91	14.0	17.0	82
Togwotee Pass	9590	23.9	22.9	104	25.3	24.0	105
Triple Peak	8520	28.4	22.4	127	26.8	24.4	110
Two Ocean Plateau	9240	28.3	28.0	101	24.5	25.3	97
Willow Creek	8060	34.3	29.0	118	33.7	31.8	106
Younts Peak	8340	15.0	14.2₍₂₈₎	106	14.4	14.3₍₂₈₎	101
Basin Index (%)		106			102
MADISON HEADWATERS IN WYOMING
Black Bear	8160	32.2	36.9	87	33.2	35.1	95
Canyon	7870	12.0	N/A	*	12.8	N/A	*
Madison Plateau	7710	21.4	21.7	99	23.6	23.5	100
West Yellowstone	6680	10.0	10.2	98	11.9	13.6₍₂₂₎	88
Whiskey Creek	6790	14.8	15.0	99	19.6	19.2	102
Basin Index (%)		94			97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake	9360	21.1	21.1	100	19.7	19.4	102
Canyon	7870	12.0	N/A	*	12.8	N/A	*
Evening Star	9040	25.2	24.2	104	27.0	26.8	101
Fisher Creek	9110	28.2	31.4	90	29.4	31.6	93
Monument Peak	8740	17.4	19.7	88	20.2	20.6	98
Northeast Entrance	7420	9.3	9.4	99	12.0	12.4	97
Parker Peak	9420	23.7	20.2	117	22.6	19.2	118
Sylvan Lake	8440	18.0	19.1	94	21.0	22.0	95
Thumb Divide	7970	14.4	15.8	91	14.0	17.0	82
Two Ocean Plateau	9240	28.3	28.0	101	24.5	25.3	97
White Mill	8730	22.2	23.0	97	20.7	21.8	95
Wolverine	7650	11.8	10.9	108	14.5	11.9	122
Basin Index (%)		99			99
WIND RIVER
Burroughs Creek	8760	12.0	N/A	*	16.3	N/A	*
Castle Creek	8410	6.2	6.6₍₁₀₎	94	8.2	8.2₍₁₀₎	100
Cold Springs	9640	7.2	7.2	100	8.7	8.8	99
Deer Park	9690	16.9	14.0₍₂₂₎	121	18.9	17.0₍₂₃₎	111
Hobbs Park	10080	14.4	13.7	105	14.6	12.6	116
Kirwin	9580	11.5	10.4	111	13.6	11.4	119
Little Warm	9370	10.6	10.2	104	13.0	11.5	113
South Pass	9040	14.4	14.4	100	16.3	15.0	109
St. Lawrence Alt	8610	5.0	N/A	*	9.3	N/A	*
Togwotee Pass	9590	23.9	22.9	104	25.3	24.0	105
Townsend Creek	8720	10.2	8.9	115	12.9	10.6	122
Basin Index (%)		106			110
BIGHORN BASIN
Bald Mtn.	9360	20.4	18.6	110	16.7	15.4	108
Bear Trap Meadow	8200	5.2	6.0	87	6.2	7.8	79
Bone Springs Div	9340	15.3	16.2	94	11.5	14.8	78
Grave Springs	8560	8.0	8.0₍₂₈₎	100	9.8	8.9₍₂₈₎	110
Kirwin	9580	11.5	10.4	111	13.6	11.4	119
Marquette	8800	9.8	6.8	144	11.4	8.5	134
Middle Powder	7760	9.4	10.4	90	8.2	9.4	87
Owl Creek	8990	5.7	5.4	106	7.0	5.8	121
Powder River Pass	9480	7.1	10.6	67	9.6	11.9	81
Shell Creek	9570	12.5	14.8	84	11.4	13.2	86
Timber Creek	7910	6.2	4.4	141	7.6	7.6	100
Basin Index (%)		100			99
SHOSHONE RIVER
Blackwater	9840	23.7	21.8	109	22.3	20.8	107
Evening Star	9040	25.2	24.2	104	27.0	26.8	101
Marquette	8800	9.8	6.8	144	11.4	8.5	134
Sylvan Lake	8440	18.0	19.1	94	21.0	22.0	95
Sylvan Road	7140	8.6	10.9	79	13.0	15.6	83
Younts Peak	8340	15.0	14.2₍₂₈₎	106	14.4	14.3₍₂₈₎	101
Basin Index (%)		103			101
POWDER RIVER
Bear Trap Meadow	8200	5.2	6.0	87	6.2	7.8	79
Cloud Peak Reservoir	9830	10.6	14.0	76	11.1	12.6	88
Grave Springs	8560	8.0	8.0₍₂₈₎	100	9.8	8.9₍₂₈₎	110
Hansen Sawmill	8360	4.6	6.6	70	6.7	8.0	84
Middle Powder	7760	9.4	10.4	90	8.2	9.4	87
Powder River Pass	9480	7.1	10.6	67	9.6	11.9	81
Soldier Park	8680	3.3	7.1₍₁₀₎	46	6.4	8.6₍₁₀₎	74
Basin Index (%)		77			86
TONGUE RIVER
Big Goose	8010	7.1	8.2₍₂₂₎	87	9.0	9.4₍₂₂₎	96
Bone Springs Div	9340	15.3	16.2	94	11.5	14.8	78
Burgess Junction	7900	10.8	9.8	110	11.9	10.9	109
Dome Lake	8890	10.4	11.2	93	9.6	12.0	80
Little Goose	8560	8.4	9.2₍₁₀₎	91	10.3	11.4₍₁₀₎	90
Sucker Creek	8840	11.6	11.6	100	13.7	12.9	106
Tie Creek	7050	7.2	5.0₍₂₆₎	144	11.5	10.2₍₂₆₎	113
Basin Index (%)		99			95
BELLE FOURCHE
Blind Park	6900	3.8	7.0	54	9.1	10.4	88
Cole Canyon	5930	4.4	5.1₍₂₀₎	86	8.7	8.5₍₂₀₎	102
North Rapid Creek	6150	2.7	6.6₍₂₄₎	41	7.3	8.4₍₂₄₎	87
Basin Index (%)		58			92
CHEYENNE RIVER BASIN
Blind Park	6900	3.8	7.0	54	9.1	10.4	88
North Rapid Creek	6150	2.7	6.6₍₂₄₎	41	7.3	8.4₍₂₄₎	87
Basin Index (%)		48			87
UPPER N. PLATTE
Arapaho Ridge	10960	20.0	20.7₍₁₈₎	97	19.7	20.9₍₁₈₎	94
Blackhall Mtn	9830	28.3	30.0₍₁₁₎	94	29.8	28.7₍₁₁₎	104
Cinnabar Park	9670	16.9	19.9₍₁₇₎	85	21.0	22.8₍₁₇₎	92
Columbine	9170	24.0	21.8	110	26.4	23.2	114
Divide Peak	8700	15.8	19.4	81	19.3	20.8	93
Joe Wright	10140	22.1	19.5	113	27.5	25.0	110
Laprele Creek	8370	7.8	9.2	85	9.4	11.2	84
Med Bow	10500	40.2	N/A	*	33.6	N/A	*
Never Summer	10300	19.8	19.6₍₁₈₎	101	16.4	16.4₍₁₈₎	100
North French Creek	10150	30.7	27.3	112	29.3	25.7	114
Old Battle	9850	28.4	29.0	98	28.2	31.6	89
Rawah	9100	10.3	10.6₍₁₈₎	97	14.0	14.7₍₁₈₎	95
Sage Creek Basin	7830	9.3	13.0₍₁₉₎	72	12.1	12.4₍₁₉₎	98
Sand Lake	10080	28.0	26.4	106	26.8	23.8	113
South Brush Creek	8480	9.7	11.8	82	11.4	13.2	86
Tower	10610	41.8	42.0	100	41.5	38.2	109
Webber Springs	9250	18.3	21.6	85	22.2	24.5	91
Whiskey Park	8950	26.4	25.4	104	28.1	26.4	106
Willow Creek Pass	9520	12.7	12.6	101	12.7	13.1	97
Zirkel	9320	24.0	27.6₍₁₈₎	87	30.0	30.0₍₁₈₎	100
Basin Index (%)		97			101
SWEETWATER
Deer Park	9690	16.9	14.0₍₂₂₎	121	18.9	17.0₍₂₃₎	111
Larsen Creek	8880	7.4	10.4₍₁₀₎	71	11.9	13.0₍₁₀₎	92
South Pass	9040	14.4	14.4	100	16.3	15.0	109
Basin Index (%)		100			105
LOWER N. PLATTE
Casper Mtn.	7940	8.2	12.9	64	10.4	13.2	79
Laprele Creek	8370	7.8	9.2	85	9.4	11.2	84
Reno Hill	8410	11.2	13.8	81	13.3	14.4	92
Windy Peak	7900	6.2	7.8	79	7.4	9.8	76
Basin Index (%)		76			83
LARAMIE RIVER
Brooklyn Lake	10250	22.6	20.6	110	23.5	20.9	112
Cinnabar Park	9670	16.9	19.9₍₁₇₎	85	21.0	22.8₍₁₇₎	92
Crow Creek	8320	2.1	5.9₍₁₇₎	36	8.2	10.1₍₁₇₎	81
Deadman Hill	10240	17.3	15.7	110	17.9	16.9	106
Rawah	9100	10.3	10.6₍₁₈₎	97	14.0	14.7₍₁₈₎	95
Roach	9710	13.2	15.0	88	16.8	18.2	92
Windy Peak	7900	6.2	7.8	79	7.4	9.8	76
Basin Index (%)		93			96
S. PLATTE
Crow Creek	8320	2.1	5.9₍₁₇₎	36	8.2	10.1₍₁₇₎	81
Basin Index (%)		36			81
LITTLE SNAKE RIVER
Battle Mountain	7460	7.9	11.0	72	15.1	14.4	105
Divide Peak	8700	15.8	19.4	81	19.3	20.8	93
Elk River	8710	14.5	17.6	82	19.0	18.1	105
Elkhead Divide	8780	15.1	N/A	*	18.1	N/A	*
Little Snake River	8930	23.9	25.4₍₁₆₎	94	30.5	31.0₍₁₆₎	98
Old Battle	9850	28.4	29.0	98	28.2	31.6	89
Sage Creek Basin	7830	9.3	13.0₍₁₉₎	72	12.1	12.4₍₁₉₎	98
Sandstone RS	8150	11.5	12.4	93	14.4	17.2	84
Whiskey Park	8950	26.4	25.4	104	28.1	26.4	106
Basin Index (%)		90			97
UPPER GREEN RIVER
Big Sandy Opening	9100	10.9	12.9	84	11.1	12.2	91
Blind Bull Sum	8880	26.1	23.6	111	18.3	17.5	105
East Rim Divide	8010	10.3	10.3	100	11.3	10.9	104
Elkhart Park G.S.	9410	12.4	12.2	102	12.1	12.4	98
Gros Ventre Summit	8760	12.7	12.6	101	12.9	11.8	109
Gunsight Pass	9830	13.5	12.6₍₂₂₎	107	13.3	13.2₍₂₂₎	101
Indian Creek	9400	25.2	22.9	110	21.5	19.3	111
Kendall R.S.	7790	13.0	11.3	115	14.1	13.0	108
Larsen Creek	8880	7.4	10.4₍₁₀₎	71	11.9	13.0₍₁₀₎	92
Loomis Park	8240	14.4	15.3	94	16.2	16.4	99
New Fork Lake	8380	9.7	10.4	93	-M	10.4	*
Pocket Creek	9370	-M	N/A	*	-M	N/A	*
Snider Basin	8080	13.5	12.4	109	15.8	13.6	116
Spring Creek Divide	9020	26.0	24.2	107	24.9	23.1	108
Triple Peak	8520	28.4	22.4	127	26.8	24.4	110
Basin Index (%)		105			105
LOWER GREEN RIVER
Blacks Fork Jct	8880	10.0	8.8₍₁₀₎	114	13.0	12.0₍₁₀₎	108
Buck Pasture	9620	12.9	N/A	*	18.0	N/A	*
EF Blacks Fork GS	9360	9.0	11.3₍₁₀₎	80	12.0	10.4₍₁₀₎	115
Hams Fork	7870	10.7	10.8	99	12.4	10.8	115
Henrys Fork	10180	-M	N/A	*	12.6	N/A	*
Hewinta	9510	8.1	10.2	79	14.1	12.6	112
Hickerson Park	9130	5.5	7.5	73	9.2	9.7	95
Hole-in-Rock	9170	5.2	7.0	74	9.4	9.4	100
Indian Creek	9400	25.2	22.9	110	21.5	19.3	111
Kelley R.S.	8240	16.6	14.5	114	17.3	15.6	111
Spirit Lk	10240	12.4	11.7₍₁₁₎	106	13.9	15.9₍₁₁₎	87
Steel Creek Park	10140	15.3	13.8	111	16.8	15.4	109
Basin Index (%)		100			106
UPPER BEAR RIVER
Bear River RS	8510	6.5	9.4₍₁₀₎	69	12.3	11.4₍₁₀₎	108
Bug Lake	7980	17.9	18.3	98	18.8	17.2	109
Burts Miller Ranch	7900	4.0	5.4₍₁₁₎	74	11.3	7.1₍₁₁₎	159
Chalk Creek #1	9160	18.5	22.5	82	21.9	22.2	99
Giveout	6940	8.6	8.0	108	12.0	11.6	103
Hayden Fork	9160	12.0	14.4	83	20.3	19.6	104
Kelley R.S.	8240	16.6	14.5	114	17.3	15.6	111
Lily Lake	9130	11.4	12.2	93	14.4	14.6	99
Monte Cristo	8930	24.3	25.8	94	23.7	25.3	94
Salt River Summit	7630	15.0	13.4	112	13.4	15.3	88
Spring Creek Divide	9020	26.0	24.2	107	24.9	23.1	108
Trial Lake	9970	23.7	21.4	111	23.7	21.4	111
Basin Index (%)		97			105

-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.