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 Saturday, April 26, 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	58.0	58.2₍₂₉₎	100	62.3	76.5	81
Garver Creek	4250	7.6	5.1	149	15.9	19.4₍₂₄₎	82
Hawkins Lake	6460	23.9	26.4	91	32.6	33.0	99
Hidden Lake	5000	31.2	31.6₍₂₀₎	99	47.7	61.8₍₂₀₎	77
Myrtle Creek	3540	0.0	0.0₍₁₇₎	*	20.7	22.0₍₁₇₎	94
Basin Index (%)		100			84
IDAHO PEND OREILLE RIVER REGION
Bear Mountain	5460	58.0	58.2₍₂₉₎	100	62.3	76.5	81
Bunchgrass Mdw	5020	25.1	26.7	94	35.9	38.7	93
Mosquito Ridge	5270	27.3	30.7₍₂₉₎	89	38.2	47.8	80
Quartz Peak	4710	9.0	13.4	67	38.8	36.3	107
Ragged Mountain	4210	11.7	10.8₍₁₄₎	108	36.3	36.4₍₁₄₎	100
Schweitzer Basin	6090	56.2	49.0	115	43.5	43.2	101
Basin Index (%)		99			91
COEUR d'ALENE BASIN
Humboldt Gulch	4260	6.7	4.5₍₂₉₎	149	29.9	40.6	74
Lookout	5180	18.1	23.9	76	30.8	41.1	75
Mosquito Ridge	5270	27.3	30.7₍₂₉₎	89	38.2	47.8	80
Sunset	5580	12.8	19.9	64	24.7	37.3	66
Basin Index (%)		82			74
ST. JOE BASIN
Hoodoo Basin	6060	37.3	39.7	94	44.6	49.2	91
Lost Lake	6090	48.9	52.5	93	56.1	62.7	89
Mica Creek	4480	12.0	14.4	83	37.1	41.6	89
Sherwin	3190	0.0	0.0₍₂₉₎	*	26.6	30.6₍₂₉₎	87
Basin Index (%)		92			89
SPOKANE BASIN
Hoodoo Basin	6060	37.3	39.7	94	44.6	49.2	91
Humboldt Gulch	4260	6.7	4.5₍₂₉₎	149	29.9	40.6	74
Lookout	5180	18.1	23.9	76	30.8	41.1	75
Lost Lake	6090	48.9	52.5	93	56.1	62.7	89
Mica Creek	4480	12.0	14.4	83	37.1	41.6	89
Mosquito Ridge	5270	27.3	30.7₍₂₉₎	89	38.2	47.8	80
Quartz Peak	4710	9.0	13.4	67	38.8	36.3	107
Ragged Mountain	4210	11.7	10.8₍₁₄₎	108	36.3	36.4₍₁₄₎	100
Sherwin	3190	0.0	0.0₍₂₉₎	*	26.6	30.6₍₂₉₎	87
Sunset	5580	12.8	19.9	64	24.7	37.3	66
Basin Index (%)		88			86
SELWAY BASIN
Mountain Meadows	6340	20.6	20.3	101	31.4	32.0	98
Nez Perce Camp	5670	10.8	10.7	101	20.5	22.3	92
Twelvemile Creek	5530	8.8	6.8	129	34.1	36.6	93
Twin Lakes	6390	37.6	38.6	97	48.0	50.4	95
Basin Index (%)		102			95
LOCHSA BASIN
Lolo Pass	5280	18.7	22.0	85	33.0	37.0	89
Savage Pass	6170	20.6	24.6	84	29.2	34.5	85
Basin Index (%)		84			87
NF CLEARWATER BASIN
Cool Creek	6310	45.0	45.8	98	48.6	57.4	85
Crater Meadows	5960	42.8	45.1	95	51.6	56.6	91
Elk Butte	5680	26.2	31.8	82	37.4	45.6	82
Hemlock Butte	5800	45.7	43.4	105	36.6	N/A	*
Hoodoo Basin	6060	37.3	39.7	94	44.6	49.2	91
Lolo Pass	5280	18.7	22.0	85	33.0	37.0	89
Lost Lake	6090	48.9	52.5	93	56.1	62.7	89
Pierce R.S.	3080	0.0	0.0₍₁₁₎	*	29.6	34.2₍₁₁₎	87
Shanghi Summit	4590	8.2	15.2	54	39.0	44.2	88
Basin Index (%)		92			88
CLEARWATER BASIN
Cool Creek	6310	45.0	45.8	98	48.6	57.4	85
Crater Meadows	5960	42.8	45.1	95	51.6	56.6	91
Elk Butte	5680	26.2	31.8	82	37.4	45.6	82
Hemlock Butte	5800	45.7	43.4	105	36.6	N/A	*
Hoodoo Basin	6060	37.3	39.7	94	44.6	49.2	91
Lolo Pass	5280	18.7	22.0	85	33.0	37.0	89
Lost Lake	6090	48.9	52.5	93	56.1	62.7	89
Moscow Mountain	4700	3.2	7.4₍₂₀₎	43	33.3	36.8₍₂₀₎	90
Mountain Meadows	6340	20.6	20.3	101	31.4	32.0	98
Nez Perce Camp	5670	10.8	10.7	101	20.5	22.3	92
Pierce R.S.	3080	0.0	0.0₍₁₁₎	*	29.6	34.2₍₁₁₎	87
Savage Pass	6170	20.6	24.6	84	29.2	34.5	85
Shanghi Summit	4590	8.2	15.2	54	39.0	44.2	88
Sherwin	3190	0.0	0.0₍₂₉₎	*	26.6	30.6₍₂₉₎	87
Twelvemile Creek	5530	8.8	6.8	129	34.1	36.6	93
Twin Lakes	6390	37.6	38.6	97	48.0	50.4	95
Basin Index (%)		93			89
SALMON RIVER ABOVE SALMON BASIN
Banner Summit	7040	21.4	22.8	94	33.2	32.6	102
Galena	7470	13.7	13.2	104	18.2	18.7	97
Galena Summit	8780	18.6	18.9	98	21.7	21.6	100
Mill Creek Summit	8790	20.8	21.4₍₂₉₎	97	19.9	20.4	98
Moonshine	7490	4.0	5.2	77	11.3	14.0	81
Morgan Creek	7620	7.6	6.4	119	14.4	16.1	89
Vienna Mine	8930	31.3	32.8	95	30.8	33.2	93
Basin Index (%)		97			95
LEMHI BASIN
Beagle Springs	8880	9.1	9.8	93	10.2	11.6	88
Darkhorse Lake	8930	28.5	31.8	90	28.5	30.2	94
Lemhi Ridge	8080	7.3	11.2	65	13.1	14.4	91
Meadow Lake	9190	12.9	15.7	82	15.6	19.6	80
Moonshine	7490	4.0	5.2	77	11.3	14.0	81
Schwartz Lake	8620	8.5	10.8₍₂₅₎	79	14.5	16.0₍₂₅₎	91
Basin Index (%)		83			88
MF SALMON BASIN
Banner Summit	7040	21.4	22.8	94	33.2	32.6	102
Deadwood Summit	6990	51.3	39.4	130	48.5	45.4	107
Morgan Creek	7620	7.6	6.4	119	14.4	16.1	89
Basin Index (%)		117			102
SF SALMON BASIN
Big Creek Summit	6560	31.8	28.6	111	36.0	37.7	95
Deadwood Summit	6990	51.3	39.4	130	48.5	45.4	107
Secesh Summit	6520	36.7	26.4	139	41.1	31.5	130
Basin Index (%)		127			110
LITTLE SALMON BASIN
Bear Basin	5350	19.2	13.0	148	28.6	26.2	109
Brundage Reservoir	6280	30.5	25.2	121	42.1	40.8	103
Puhi Flat	6240	-M	15.0	*	37.5	34.2	110
West Branch	5590	15.3	11.9	129	38.7	32.1	121
Basin Index (%)		130			110
SALMON BASIN
Banner Summit	7040	21.4	22.8	94	33.2	32.6	102
Beagle Springs	8880	9.1	9.8	93	10.2	11.6	88
Bear Basin	5350	19.2	13.0	148	28.6	26.2	109
Big Creek Summit	6560	31.8	28.6	111	36.0	37.7	95
Brundage Reservoir	6280	30.5	25.2	121	42.1	40.8	103
Darkhorse Lake	8930	28.5	31.8	90	28.5	30.2	94
Deadwood Summit	6990	51.3	39.4	130	48.5	45.4	107
Galena	7470	13.7	13.2	104	18.2	18.7	97
Galena Summit	8780	18.6	18.9	98	21.7	21.6	100
Lemhi Ridge	8080	7.3	11.2	65	13.1	14.4	91
Meadow Lake	9190	12.9	15.7	82	15.6	19.6	80
Mill Creek Summit	8790	20.8	21.4₍₂₉₎	97	19.9	20.4	98
Moonshine	7490	4.0	5.2	77	11.3	14.0	81
Moose Creek	6170	6.3	12.2	52	17.8	21.4	83
Morgan Creek	7620	7.6	6.4	119	14.4	16.1	89
Mountain Meadows	6340	20.6	20.3	101	31.4	32.0	98
Saddle Mtn.	7890	22.1	24.2	91	19.8	24.2	82
Schwartz Lake	8620	8.5	10.8₍₂₅₎	79	14.5	16.0₍₂₅₎	91
Secesh Summit	6520	36.7	26.4	139	41.1	31.5	130
Puhi Flat	6240	-M	15.0	*	37.5	34.2	110
Vienna Mine	8930	31.3	32.8	95	30.8	33.2	93
West Branch	5590	15.3	11.9	129	38.7	32.1	121
Basin Index (%)		104			100

-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.