Idaho SNOTEL Precipitation Update Report

Idaho SNOTEL 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, August 19, 2025

Basin Site Name	Elev (ft)	Month-to-Date Precipitation			Water Year-to-Date Precipitation
Basin Site Name	Elev (ft)	Current (in)	Median (in)	Pct of Median	Current (in)	Median (in)	Pct of Median
NORTHERN PANHANDLE REGION
Bear Mountain	5460	0.9	0.5	180	69.3	85.1	81
Bunchgrass Mdw	5020	1.1	0.4	275	42.7	51.7	83
Garver Creek	4250	1.2	0.3₍₂₄₎	400	24.0	24.6₍₂₄₎	98
Hawkins Lake	6460	1.2	0.5	240	44.1	43.1	102
Hidden Lake	5000	1.4	0.7₍₂₀₎	200	57.2	71.5₍₂₀₎	80
Mosquito Ridge	5270	0.4	0.2	200	42.9	55.0	78
Moyie Mountain	6037	-M	N/A	*	-M	N/A	*
Myrtle Creek	3540	0.3	0.2₍₁₇₎	150	25.1	28.0₍₁₇₎	90
Quartz Peak	4710	-0.1	0.4	-25	41.8	47.0	89
Schweitzer Basin	6090	0.5	0.3	167	47.9	51.2	94
Basin Index (%)		197			86
COEUR D'ALENE-ST. JOE RIVER BASIN
Humboldt Gulch	4260	0.1	0.3	33	34.1	49.5	69
Lookout	5180	0.7	0.2	350	34.8	47.2	74
Lost Lake	6090	3.4	0.3	1133	63.8	74.4	86
Mica Creek	4480	0.8	0.4	200	41.7	50.8	82
Mosquito Ridge	5270	0.4	0.2	200	42.9	55.0	78
Sherwin	3190	0.6	0.1₍₂₉₎	600	28.9	37.5₍₂₉₎	77
Sunset	5580	0.6	0.4	150	32.7	48.6	67
Basin Index (%)		347			77
CLEARWATER BASIN
Cool Creek	6310	1.0	0.3	333	56.1	67.2	83
Crater Meadows	5960	0.7	0.2	350	58.8	67.9	87
Elk Butte	5680	0.7	0.2	350	40.1	55.0	73
Hemlock Butte	5800	0.3	N/A	*	42.8	N/A	*
Hoodoo Basin	6060	2.3	0.4	575	53.2	59.0	90
Lolo Pass	5280	0.6	0.4	150	37.6	44.0	85
Lost Lake	6090	3.4	0.3	1133	63.8	74.4	86
Moscow Mountain	4700	0.5	0.2₍₂₀₎	250	36.0	41.6₍₂₀₎	87
Mountain Meadows	6340	0.8	0.4	200	39.7	41.4	96
Nez Perce Camp	5670	0.8	0.4	200	25.6	30.5	84
Pierce R.S.	3080	0.3	0.5₍₁₁₎	60	33.3	42.2₍₁₁₎	79
Savage Pass	6170	0.5	0.4	125	35.4	44.6	79
Shanghi Summit	4590	0.2	0.2	100	42.8	55.6	77
Sherwin	3190	0.6	0.1₍₂₉₎	600	28.9	37.5₍₂₉₎	77
Twelvemile Creek	5530	1.5	0.4	375	40.3	43.8	92
Twin Lakes	6390	1.3	0.5	260	55.3	60.8	91
Basin Index (%)		310			85
SALMON BASIN
Banner Summit	7040	0.0	0.2	0	36.6	39.0	94
Bear Basin	5350	0.1	0.2	50	32.5	33.2	98
Big Creek Summit	6560	0.2	0.2	100	38.9	43.8	89
Brundage Reservoir	6280	0.2	0.2	100	47.1	48.9	96
Deadwood Summit	6990	0.4	0.2	200	51.9	52.0	100
Galena	7470	0.2	0.2	100	22.8	23.7	96
Galena Summit	8780	0.1	0.3	33	26.4	27.4	96
Lemhi Ridge	8080	0.2	0.4	50	20.0	22.4	89
Meadow Lake	9190	0.4	0.6	67	24.7	28.9	85
Mill Creek Summit	8790	0.1	0.4	25	24.7	26.4	94
Moonshine	7490	0.4	0.3	133	17.0	18.9	90
Moose Creek	6170	1.1	0.5	220	24.9	29.2	85
Morgan Creek	7620	0.5	0.2	250	20.7	21.8	95
Mountain Meadows	6340	0.8	0.4	200	39.7	41.4	96
Saddle Mtn.	7890	1.2	0.5	240	25.8	34.0	76
Schwartz Lake	8620	0.9	0.3₍₂₅₎	300	21.4	22.8₍₂₅₎	94
Secesh Summit	6520	0.5	0.2	250	47.0	38.6	122
Puhi Flat	6240	0.3	0.1	300	41.4	42.5	97
Vienna Mine	8930	0.1	0.3	33	37.0	40.6	91
West Branch	5590	0.1	0.2	50	41.4	40.4	102
Basin Index (%)		132			95
WEISER BASIN
Bear Saddle	6170	0.3	0.1	300	34.3	31.8	108
Puhi Flat	6240	0.3	0.1	300	41.4	42.5	97
Van Wyck	4960	-M	0.1₍₁₉₎	*	-M	24.3₍₁₉₎	*
West Branch	5590	0.1	0.2	50	41.4	40.4	102
Basin Index (%)		175			102
PAYETTE BASIN
Banner Summit	7040	0.0	0.2	0	36.6	39.0	94
Bear Basin	5350	0.1	0.2	50	32.5	33.2	98
Big Creek Summit	6560	0.2	0.2	100	38.9	43.8	89
Bogus Basin	6370	0.1	0.1₍₂₁₎	100	34.4	28.3₍₂₁₎	122
Brundage Reservoir	6280	0.2	0.2	100	47.1	48.9	96
Cozy Cove	5410	-M	0.1	*	-M	30.1	*
Deadwood Summit	6990	0.4	0.2	200	51.9	52.0	100
Jackson Peak	7060	0.1	0.1	100	42.1	42.2	100
Long Valley	4890	0.2	0.2₍₁₉₎	100	23.5	22.7₍₁₉₎	104
Secesh Summit	6520	0.5	0.2	250	47.0	38.6	122
Puhi Flat	6240	0.3	0.1	300	41.4	42.5	97
Van Wyck	4960	-M	0.1₍₁₉₎	*	-M	24.3₍₁₉₎	*
Basin Index (%)		124			101
BOISE BASIN
Atlanta Summit	7570	-0.2	0.2	-100	37.3	41.8	89
Bogus Basin	6370	0.1	0.1₍₂₁₎	100	34.4	28.3₍₂₁₎	122
Camas Creek Divide	5720	-0.1	0.0₍₂₈₎	*	21.8	22.6₍₂₈₎	96
Couch Summit	6770	-0.1	N/A	*	21.9	N/A	*
Dollarhide Summit	8390	-0.1	0.2	-50	21.9	30.6	72
Graham Guard Sta.	5680	-0.1	0.2	-50	28.1	28.8	98
Jackson Peak	7060	0.1	0.1	100	42.1	42.2	100
Mores Creek Summit	6090	0.0	0.0	*	44.2	43.3	102
Prairie	4800	-0.1	0.0	*	21.1	20.2	104
Trinity Mtn.	7790	0.0	0.1	0	43.4	45.4	96
Vienna Mine	8930	0.1	0.3	33	37.0	40.6	91
Basin Index (%)		-25			96
BIG WOOD BASIN
Camas Creek Divide	5720	-0.1	0.0₍₂₈₎	*	21.8	22.6₍₂₈₎	96
Chocolate Gulch	6310	0.1	0.3₍₂₇₎	33	16.7	20.1₍₂₇₎	83
Couch Summit	6770	-0.1	N/A	*	21.9	N/A	*
Dollarhide Summit	8390	-0.1	0.2	-50	21.9	30.6	72
Galena	7470	0.2	0.2	100	22.8	23.7	96
Galena Summit	8780	0.1	0.3	33	26.4	27.4	96
Hyndman	7590	0.0	0.3	0	17.1	21.6	79
Lost-Wood Divide	7870	0.1	0.3	33	23.0	26.4	87
Soldier R.S.	5780	-0.2	0.1	-200	18.6	21.6	86
Basin Index (%)		6			87
LITTLE WOOD BASIN
Bear Canyon	7920	0.0	0.5	0	20.1	24.6	82
Fish Ck	6380	-0.2	N/A	*	16.6	N/A	*
Garfield R.S.	6580	-0.6	0.2	-300	12.3	18.0	68
Smiley Mountain	9540	0.1	0.4₍₁₉₎	25	22.5	28.8₍₁₉₎	78
Swede Peak	7640	0.0	0.2	0	17.1	22.8	75
Basin Index (%)		-38			76
BIG LOST BASIN
Bear Canyon	7920	0.0	0.5	0	20.1	24.6	82
Hilts Creek	8090	0.3	0.6	50	16.4	19.5	84
Lost-Wood Divide	7870	0.1	0.3	33	23.0	26.4	87
Smiley Mountain	9540	0.1	0.4₍₁₉₎	25	22.5	28.8₍₁₉₎	78
Stickney Mill	7440	0.1	0.4	25	14.1	17.3	82
Basin Index (%)		27			82
LITTLE LOST
Hilts Creek	8090	0.3	0.6	50	16.4	19.5	84
Meadow Lake	9190	0.4	0.6	67	24.7	28.9	85
Moonshine	7490	0.4	0.3	133	17.0	18.9	90
Basin Index (%)		73			86
BIRCH, MEDICINE LODGE, BEAVER, CAMAS BASINS
Beagle Springs	8880	0.4	0.7	57	18.4	20.9	88
Crab Creek	6870	0.0	0.5	0	17.3	24.2	71
Lakeview Ridge	7340	0.4	0.7	57	18.1	24.0	75
Meadow Lake	9190	0.4	0.6	67	24.7	28.9	85
Basin Index (%)		48			80
HENRYS FORK, TETON BASINS
Black Bear	8160	0.6	0.7	86	43.4	51.1	85
Grand Targhee	9260	0.1	0.6₍₁₄₎	17	38.6	46.4₍₁₄₎	83
Grassy Lake	7330	0.1	0.7	14	41.4	47.6	87
Island Park	6300	0.4	0.6	67	22.2	26.5	84
Lewis Lake Divide	7880	0.1	0.8	12	41.8	45.3	92
Phillips Bench	8160	0.2	0.8	25	34.2	37.4	91
Pine Creek Pass	6710	0.3	1.0	30	29.6	30.8	96
White Elephant	7670	0.4	0.6	67	33.1	42.4	78
Basin Index (%)		38			87
SNAKE BASIN ABOVE PALISADES
Base Camp	7040	0.0	0.6	0	26.5	29.0	91
Blind Bull Sum	8880	0.1	0.5	20	22.7	26.6	85
Cottonwood Creek	7710	0.0	0.5	0	34.5	36.5	95
East Rim Divide	8010	0.2	0.4	50	16.6	18.4	90
Granite Creek	6770	0.0	0.4	0	22.9	28.4	81
Grassy Lake	7330	0.1	0.7	14	41.4	47.6	87
Gros Ventre Summit	8760	15.1	0.6	2517	32.6	20.3	161
Gunsight Pass	9830	0.3	0.6₍₂₂₎	50	19.4	22.6₍₂₂₎	86
Lewis Lake Divide	7880	0.1	0.8	12	41.8	45.3	92
Loomis Park	8240	0.5	0.5	100	22.3	25.6	87
Phillips Bench	8160	0.2	0.8	25	34.2	37.4	91
Salt River Summit	7630	0.0	0.4	0	16.7	23.4	71
Snake River Station	6900	0.3	0.6	50	27.8	32.1	87
Somsen Ranch	6830	0.0	0.6	0	20.2	24.8	81
Spring Creek Divide	9020	-M	0.6	*	-M	33.6	*
Thumb Divide	7970	-M	0.6	*	-M	26.6	*
Togwotee Pass	9590	2.6	0.4	650	34.7	35.2	99
Triple Peak	8520	0.7	0.5	140	33.3	36.8	90
Two Ocean Plateau	9240	0.5	0.7	71	34.0	39.1	87
Willow Creek	8060	0.1	0.8	12	45.5	48.3	94
Younts Peak	8340	0.3	0.6₍₂₈₎	50	20.3	25.0₍₂₈₎	81
Basin Index (%)		192			91
WILLOW, BLACKFOOT, PORTNEUF BASINS
Oxford Spring	6790	0.0	0.2	0	20.4	24.0	85
Pebble Creek	6520	0.6	N/A	*	28.2	N/A	*
Sedgwick Peak	7800	0.0	0.6	0	27.0	29.8	91
Sheep Mtn.	6630	0.2	0.4	50	19.3	23.6	82
Slug Creek Divide	7240	0.0	0.4	0	27.9	31.0	90
Somsen Ranch	6830	0.0	0.6	0	20.2	24.8	81
Wildhorse Divide	6480	0.4	0.2	200	29.0	26.0	112
Basin Index (%)		25			90
SNAKE BASIN ABOVE AMERICAN FALLS
Base Camp	7040	0.0	0.6	0	26.5	29.0	91
Black Bear	8160	0.6	0.7	86	43.4	51.1	85
Blind Bull Sum	8880	0.1	0.5	20	22.7	26.6	85
Cottonwood Creek	7710	0.0	0.5	0	34.5	36.5	95
East Rim Divide	8010	0.2	0.4	50	16.6	18.4	90
Grand Targhee	9260	0.1	0.6₍₁₄₎	17	38.6	46.4₍₁₄₎	83
Granite Creek	6770	0.0	0.4	0	22.9	28.4	81
Grassy Lake	7330	0.1	0.7	14	41.4	47.6	87
Gros Ventre Summit	8760	15.1	0.6	2517	32.6	20.3	161
Gunsight Pass	9830	0.3	0.6₍₂₂₎	50	19.4	22.6₍₂₂₎	86
Island Park	6300	0.4	0.6	67	22.2	26.5	84
Lewis Lake Divide	7880	0.1	0.8	12	41.8	45.3	92
Loomis Park	8240	0.5	0.5	100	22.3	25.6	87
Oxford Spring	6790	0.0	0.2	0	20.4	24.0	85
Phillips Bench	8160	0.2	0.8	25	34.2	37.4	91
Pine Creek Pass	6710	0.3	1.0	30	29.6	30.8	96
Salt River Summit	7630	0.0	0.4	0	16.7	23.4	71
Sedgwick Peak	7800	0.0	0.6	0	27.0	29.8	91
Sheep Mtn.	6630	0.2	0.4	50	19.3	23.6	82
Slug Creek Divide	7240	0.0	0.4	0	27.9	31.0	90
Snake River Station	6900	0.3	0.6	50	27.8	32.1	87
Somsen Ranch	6830	0.0	0.6	0	20.2	24.8	81
Spring Creek Divide	9020	-M	0.6	*	-M	33.6	*
Thumb Divide	7970	-M	0.6	*	-M	26.6	*
Togwotee Pass	9590	2.6	0.4	650	34.7	35.2	99
Two Ocean Plateau	9240	0.5	0.7	71	34.0	39.1	87
White Elephant	7670	0.4	0.6	67	33.1	42.4	78
Wildhorse Divide	6480	0.4	0.2	200	29.0	26.0	112
Willow Creek	8060	0.1	0.8	12	45.5	48.3	94
Basin Index (%)		148			90
RAFT BASIN
George Creek	8960	0.5	1.0₍₁₀₎	50	23.8	28.4₍₁₀₎	84
Howell Canyon	8010	0.2	0.6₍₂₉₎	33	33.6	38.2₍₂₉₎	88
Basin Index (%)		44			86
GOOSE CREEK BASIN
Bostetter R.S.	7530	0.0	0.4	0	23.7	26.8	88
Magic Mountain	6940	0.1	0.2	50	25.5	30.8	83
Basin Index (%)		17			85
SALMON FALLS BASIN
Bostetter R.S.	7530	0.0	0.4	0	23.7	26.8	88
Jakes Creek	7380	0.0	N/A	*	17.9	N/A	*
Magic Mountain	6940	0.1	0.2	50	25.5	30.8	83
ONeil Creek	6490	0.1	N/A	*	11.0	N/A	*
Pole Creek R.S.	8360	0.1	0.3	33	17.2	20.2	85
Wilson Creek	7110	0.1	0.3	33	21.9	26.6	82
Basin Index (%)		25			85
BRUNEAU BASIN
Bear Creek	8090	-0.1	0.5	-20	29.2	33.0	88
Big Bend	6890	0.0	0.2	0	14.5	16.6	87
Merritt Mountain	6920	0.4	N/A	*	14.5	N/A	*
ONeil Creek	6490	0.1	N/A	*	11.0	N/A	*
Pole Creek R.S.	8360	0.1	0.3	33	17.2	20.2	85
Seventysix Creek	7360	-0.1	0.3	-33	17.8	19.8	90
Stag Mountain	7640	-0.1	N/A	*	9.2	N/A	*
Wilson Creek	7110	0.1	0.3	33	21.9	26.6	82
Basin Index (%)		0			87
OWYHEE BASIN
Big Bend	6890	0.0	0.2	0	14.5	16.6	87
Columbia Basin	6480	0.0	N/A	*	20.7	N/A	*
Fawn Creek	7040	0.1	0.1	100	25.5	31.2	82
Fry Canyon	6790	-0.1	N/A	*	20.0	N/A	*
Jack Creek Upper	7380	-0.1	0.2	-50	22.7	26.5	86
Jacks Peak	8440	0.2	0.2	100	28.0	31.3	89
Laurel Draw	6680	0.0	0.1	0	23.4	24.6	95
Merritt Mountain	6920	0.4	N/A	*	14.5	N/A	*
Mud Flat	5750	0.3	0.1	300	15.9	15.9	100
South Mtn.	6650	0.0	0.2	0	33.7	31.2	108
Taylor Canyon	6320	0.0	0.1	0	9.3	11.6	80
Toe Jam	7700	-0.1	0.1₍₁₁₎	-100	23.8	24.5₍₁₁₎	97
Basin Index (%)		31			92
BEAR RIVER BASIN
Bear River RS	8510	0.1	0.5₍₁₀₎	20	14.9	17.6₍₁₀₎	85
Bug Lake	7980	0.1	0.6	17	22.4	25.2	89
Burts Miller Ranch	7900	0.2	0.2₍₁₁₎	100	14.7	10.9₍₁₁₎	135
Chalk Creek #1	9160	0.0	0.7	0	27.2	33.2	82
Emigrant Summit	7390	0.0	0.3	0	31.6	34.1	93
Franklin Basin	8140	0.0	0.3	0	35.7	38.9	92
Garden City Summit	7680	0.0	0.3₍₁₁₎	0	22.2	26.1₍₁₁₎	85
Giveout	6940	0.0	0.3	0	16.2	20.0	81
Hayden Fork	9160	0.1	0.8	12	24.6	30.6	80
Kelley R.S.	8240	0.0	0.4	0	22.1	25.2	88
Klondike Narrows	7280	-0.1	0.2₍₁₁₎	-50	30.3	32.0₍₁₁₎	95
Lily Lake	9130	0.1	0.6	17	17.9	24.6	73
Monte Cristo	8930	0.0	0.4	0	28.9	34.4	84
Oxford Spring	6790	0.0	0.2	0	20.4	24.0	85
Salt River Summit	7630	0.0	0.4	0	16.7	23.4	71
Sedgwick Peak	7800	0.0	0.6	0	27.0	29.8	91
Slug Creek Divide	7240	0.0	0.4	0	27.9	31.0	90
Spring Creek Divide	9020	-M	0.6	*	-M	33.6	*
Tony Grove Lake	8450	-M	0.5	*	-M	44.2	*
Trial Lake	9970	0.3	1.0	30	28.8	32.4	89
Usu Doc Daniel	8610	0.0	0.3₍₁₃₎	0	31.6	35.9₍₁₃₎	88
Basin Index (%)		9			87

-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.

The MONTH-TO-DATE PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning on the 1st day of the current month) found at selected SNOTEL sites in or
near the basin compared to the Median (or Average) value for those sites on this day.

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.