Idaho Northern SNOTEL Snow/Precipitation Update Report

Idaho Northern 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
IDAHO KOOTENAI RIVER REGION
Bear Mountain	5460	54.6	53.8	101	57.5	67.8	85
Garver Creek	4250	8.8	9.8	90	14.6	17.5₍₂₄₎	83
Hawkins Lake	6460	21.6	26.3	82	29.3	30.2	97
Hidden Lake	5000	32.3	35.0₍₂₀₎	92	43.6	54.6₍₂₀₎	80
Myrtle Creek	3540	0.0	2.2₍₁₇₎	0	18.7	20.4₍₁₇₎	92
Basin Index (%)		92			86
IDAHO PEND OREILLE RIVER REGION
Bear Mountain	5460	54.6	53.8	101	57.5	67.8	85
Bunchgrass Mdw	5020	26.5	27.3	97	31.9	35.2	91
Mosquito Ridge	5270	30.1	32.4	93	36.2	41.8	87
Quartz Peak	4710	23.5	19.3	122	37.4	32.6	115
Ragged Mountain	4210	20.1	20.4₍₁₄₎	99	34.8	33.6₍₁₄₎	104
Schweitzer Basin	6090	52.2	48.0	109	42.7	38.8	110
Basin Index (%)		103			96
COEUR d'ALENE BASIN
Humboldt Gulch	4260	11.2	9.8₍₂₉₎	114	27.9	38.3	73
Lookout	5180	19.7	25.8	76	29.0	38.6	75
Mosquito Ridge	5270	30.1	32.4	93	36.2	41.8	87
Sunset	5580	14.6	21.2	69	20.6	33.8	61
Basin Index (%)		85			75
ST. JOE BASIN
Hoodoo Basin	6060	35.3	37.8	93	41.7	45.9	91
Lost Lake	6090	47.8	51.4	93	52.8	57.3	92
Mica Creek	4480	19.6	21.4	92	34.3	38.9	88
Sherwin	3190	3.0	6.2₍₂₉₎	48	25.3	28.2₍₂₉₎	90
Basin Index (%)		90			90
SPOKANE BASIN
Hoodoo Basin	6060	35.3	37.8	93	41.7	45.9	91
Humboldt Gulch	4260	11.2	9.8₍₂₉₎	114	27.9	38.3	73
Lookout	5180	19.7	25.8	76	29.0	38.6	75
Lost Lake	6090	47.8	51.4	93	52.8	57.3	92
Mica Creek	4480	19.6	21.4	92	34.3	38.9	88
Mosquito Ridge	5270	30.1	32.4	93	36.2	41.8	87
Quartz Peak	4710	23.5	19.3	122	37.4	32.6	115
Ragged Mountain	4210	20.1	20.4₍₁₄₎	99	34.8	33.6₍₁₄₎	104
Sherwin	3190	3.0	6.2₍₂₉₎	48	25.3	28.2₍₂₉₎	90
Sunset	5580	14.6	21.2	69	20.6	33.8	61
Basin Index (%)		92			87
SELWAY BASIN
Mountain Meadows	6340	22.6	21.0	108	28.5	27.0	106
Nez Perce Camp	5670	14.4	12.9	112	19.0	20.0	95
Twelvemile Creek	5530	23.1	16.0	144	31.2	33.3	94
Twin Lakes	6390	37.3	38.8	96	43.9	46.0	95
Basin Index (%)		110			97
LOCHSA BASIN
Lolo Pass	5280	24.6	28.0	88	30.5	33.9	90
Savage Pass	6170	21.5	26.2	82	26.6	30.6	87
Basin Index (%)		85			89
NF CLEARWATER BASIN
Cool Creek	6310	44.1	43.6	101	45.8	52.6	87
Crater Meadows	5960	43.3	47.6	91	48.0	50.8	94
Elk Butte	5680	31.3	33.9	92	36.0	42.3	85
Hemlock Butte	5800	46.6	44.6	104	34.2	N/A	*
Hoodoo Basin	6060	35.3	37.8	93	41.7	45.9	91
Lolo Pass	5280	24.6	28.0	88	30.5	33.9	90
Lost Lake	6090	47.8	51.4	93	52.8	57.3	92
Pierce R.S.	3080	5.3	8.9₍₁₁₎	60	27.5	30.6₍₁₁₎	90
Shanghi Summit	4590	22.1	22.6	98	36.6	40.2	91
Basin Index (%)		94			90
CLEARWATER BASIN
Cool Creek	6310	44.1	43.6	101	45.8	52.6	87
Crater Meadows	5960	43.3	47.6	91	48.0	50.8	94
Elk Butte	5680	31.3	33.9	92	36.0	42.3	85
Hemlock Butte	5800	46.6	44.6	104	34.2	N/A	*
Hoodoo Basin	6060	35.3	37.8	93	41.7	45.9	91
Lolo Pass	5280	24.6	28.0	88	30.5	33.9	90
Lost Lake	6090	47.8	51.4	93	52.8	57.3	92
Moscow Mountain	4700	15.7	18.0₍₂₀₎	87	31.6	33.3₍₂₀₎	95
Mountain Meadows	6340	22.6	21.0	108	28.5	27.0	106
Nez Perce Camp	5670	14.4	12.9	112	19.0	20.0	95
Pierce R.S.	3080	5.3	8.9₍₁₁₎	60	27.5	30.6₍₁₁₎	90
Savage Pass	6170	21.5	26.2	82	26.6	30.6	87
Shanghi Summit	4590	22.1	22.6	98	36.6	40.2	91
Sherwin	3190	3.0	6.2₍₂₉₎	48	25.3	28.2₍₂₉₎	90
Twelvemile Creek	5530	23.1	16.0	144	31.2	33.3	94
Twin Lakes	6390	37.3	38.8	96	43.9	46.0	95
Basin Index (%)		96			92
SALMON RIVER ABOVE SALMON BASIN
Banner Summit	7040	30.2	26.0	116	32.0	29.4	109
Galena	7470	17.5	15.2	115	17.4	16.8	104
Galena Summit	8780	20.9	19.0	110	20.8	18.9	110
Mill Creek Summit	8790	19.7	18.5₍₂₉₎	106	18.7	18.0	104
Moonshine	7490	9.7	8.9	109	10.6	12.2	87
Morgan Creek	7620	11.4	9.9	115	13.4	14.4	93
Vienna Mine	8930	31.8	30.4	105	29.4	30.2	97
Basin Index (%)		110			102
LEMHI BASIN
Beagle Springs	8880	9.1	9.2	99	8.5	9.2	92
Darkhorse Lake	8930	26.8	29.0	92	26.1	26.5	98
Lemhi Ridge	8080	9.6	9.8	98	11.4	12.1	94
Meadow Lake	9190	13.9	14.8	94	14.0	15.7	89
Moonshine	7490	9.7	8.9	109	10.6	12.2	87
Schwartz Lake	8620	11.1	10.7₍₂₅₎	104	13.1	13.3₍₂₅₎	98
Basin Index (%)		97			94
MF SALMON BASIN
Banner Summit	7040	30.2	26.0	116	32.0	29.4	109
Deadwood Summit	6990	49.5	39.2	126	46.8	42.1	111
Morgan Creek	7620	11.4	9.9	115	13.4	14.4	93
Basin Index (%)		121			107
SF SALMON BASIN
Big Creek Summit	6560	37.6	31.4	120	34.7	34.0	102
Deadwood Summit	6990	49.5	39.2	126	46.8	42.1	111
Secesh Summit	6520	42.4	30.4	139	38.9	27.8	140
Basin Index (%)		128			116
LITTLE SALMON BASIN
Bear Basin	5350	22.1	17.0	130	27.1	24.1	112
Brundage Reservoir	6280	39.6	31.0	128	40.2	36.2	111
Puhi Flat	6240	30.8	22.8	135	35.7	30.3	118
West Branch	5590	27.4	21.2	129	36.9	29.4	126
Basin Index (%)		130			117
SALMON BASIN
Banner Summit	7040	30.2	26.0	116	32.0	29.4	109
Beagle Springs	8880	9.1	9.2	99	8.5	9.2	92
Bear Basin	5350	22.1	17.0	130	27.1	24.1	112
Big Creek Summit	6560	37.6	31.4	120	34.7	34.0	102
Brundage Reservoir	6280	39.6	31.0	128	40.2	36.2	111
Darkhorse Lake	8930	26.8	29.0	92	26.1	26.5	98
Deadwood Summit	6990	49.5	39.2	126	46.8	42.1	111
Galena	7470	17.5	15.2	115	17.4	16.8	104
Galena Summit	8780	20.9	19.0	110	20.8	18.9	110
Lemhi Ridge	8080	9.6	9.8	98	11.4	12.1	94
Meadow Lake	9190	13.9	14.8	94	14.0	15.7	89
Mill Creek Summit	8790	19.7	18.5₍₂₉₎	106	18.7	18.0	104
Moonshine	7490	9.7	8.9	109	10.6	12.2	87
Moose Creek	6170	13.5	15.4	88	16.1	19.4	83
Morgan Creek	7620	11.4	9.9	115	13.4	14.4	93
Mountain Meadows	6340	22.6	21.0	108	28.5	27.0	106
Saddle Mtn.	7890	20.6	23.0	90	17.7	21.4	83
Schwartz Lake	8620	11.1	10.7₍₂₅₎	104	13.1	13.3₍₂₅₎	98
Secesh Summit	6520	42.4	30.4	139	38.9	27.8	140
Puhi Flat	6240	30.8	22.8	135	35.7	30.3	118
Vienna Mine	8930	31.8	30.4	105	29.4	30.2	97
West Branch	5590	27.4	21.2	129	36.9	29.4	126
Basin Index (%)		114			106

-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.