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 Tuesday, December 10, 2024

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	5400	16.4	13.2	124	20.7	25.6	81
Garver Creek	4250	3.5	3.4	103	6.6	7.4₍₂₄₎	89
Hawkins Lake	6450	7.8	7.1	110	13.7	13.0	105
Hidden Lake	5040	11.6	9.4₍₂₀₎	123	19.5	21.8₍₂₀₎	89
Myrtle Creek	3520	1.7	0.7₍₁₇₎	243	7.6	8.2₍₁₇₎	93
Basin Index (%)		121			90
IDAHO PEND OREILLE RIVER REGION
Bear Mountain	5400	16.4	13.2	124	20.7	25.6	81
Bunchgrass Mdw	5000	8.1	6.8	119	11.2	14.0	80
Mosquito Ridge	5260	8.9	8.8	101	11.9	15.8	75
Quartz Peak	4700	7.4	4.8	154	13.4	10.8	124
Ragged Mountain	4210	4.7	3.4₍₁₄₎	138	12.4	9.8₍₁₄₎	127
Schweitzer Basin	6090	16.5	11.6	142	16.2	14.4	112
Basin Index (%)		128			95
COEUR d'ALENE BASIN
Humboldt Gulch	4250	2.8	3.1₍₂₉₎	90	10.5	13.8	76
Lookout	5190	5.7	5.7	100	10.8	14.6	74
Mosquito Ridge	5260	8.9	8.8	101	11.9	15.8	75
Sunset	5540	5.0	4.4	114	8.8	12.2	72
Basin Index (%)		102			74
ST. JOE BASIN
Hoodoo Basin	6050	9.6	10.0	96	13.4	16.4	82
Lost Lake	6110	13.5	11.8	114	17.5	18.4	95
Mica Creek	4510	5.6	4.8	117	12.1	14.0	86
Sherwin	3200	1.4	1.8	78	8.0	9.4	85
Basin Index (%)		106			88
SPOKANE BASIN
Hoodoo Basin	6050	9.6	10.0	96	13.4	16.4	82
Humboldt Gulch	4250	2.8	3.1₍₂₉₎	90	10.5	13.8	76
Lookout	5190	5.7	5.7	100	10.8	14.6	74
Lost Lake	6110	13.5	11.8	114	17.5	18.4	95
Mica Creek	4510	5.6	4.8	117	12.1	14.0	86
Mosquito Ridge	5260	8.9	8.8	101	11.9	15.8	75
Quartz Peak	4700	7.4	4.8	154	13.4	10.8	124
Ragged Mountain	4210	4.7	3.4₍₁₄₎	138	12.4	9.8₍₁₄₎	127
Sherwin	3200	1.4	1.8	78	8.0	9.4	85
Sunset	5540	5.0	4.4	114	8.8	12.2	72
Basin Index (%)		110			88
SELWAY BASIN
Mountain Meadows	6320	5.2	5.5	95	7.7	9.6	80
Nez Perce Camp	5650	3.3	3.3	100	4.9	7.7	64
Twelvemile Creek	5600	5.0	3.8	132	9.5	11.8	81
Twin Lakes	6400	8.5	9.2	92	13.3	16.0	83
Basin Index (%)		101			78
LOCHSA BASIN
Lolo Pass	5240	5.0	6.1	82	8.8	12.0	73
Savage Pass	6190	4.7	6.4	73	8.5	11.5	74
Basin Index (%)		78			74
NF CLEARWATER BASIN
Cool Creek	6280	10.9	10.4₍₂₉₎	105	14.2	16.7₍₂₉₎	85
Crater Meadows	5960	11.5	10.8	106	15.7	18.2	86
Elk Butte	5690	7.9	7.1	111	11.3	13.6	83
Hemlock Butte	5810	11.6	9.4	123	10.7	N/A	*
Hoodoo Basin	6050	9.6	10.0	96	13.4	16.4	82
Lolo Pass	5240	5.0	6.1	82	8.8	12.0	73
Lost Lake	6110	13.5	11.8	114	17.5	18.4	95
Pierce R.S.	3080	1.5	1.1₍₁₁₎	136	9.5	11.2₍₁₁₎	85
Shanghi Summit	4600	6.0	5.0	120	12.6	13.2	95
Basin Index (%)		108			86
CLEARWATER BASIN
Cool Creek	6280	10.9	10.4₍₂₉₎	105	14.2	16.7₍₂₉₎	85
Crater Meadows	5960	11.5	10.8	106	15.7	18.2	86
Elk Butte	5690	7.9	7.1	111	11.3	13.6	83
Hemlock Butte	5810	11.6	9.4	123	10.7	N/A	*
Hoodoo Basin	6050	9.6	10.0	96	13.4	16.4	82
Lolo Pass	5240	5.0	6.1	82	8.8	12.0	73
Lost Lake	6110	13.5	11.8	114	17.5	18.4	95
Moscow Mountain	4700	4.5	3.6₍₂₀₎	125	9.4	9.2₍₂₀₎	102
Mountain Meadows	6320	5.2	5.5	95	7.7	9.6	80
Nez Perce Camp	5650	3.3	3.3	100	4.9	7.7	64
Pierce R.S.	3080	1.5	1.1₍₁₁₎	136	9.5	11.2₍₁₁₎	85
Savage Pass	6190	4.7	6.4	73	8.5	11.5	74
Shanghi Summit	4600	6.0	5.0	120	12.6	13.2	95
Sherwin	3200	1.4	1.8	78	8.0	9.4	85
Twelvemile Creek	5600	5.0	3.8	132	9.5	11.8	81
Twin Lakes	6400	8.5	9.2	92	13.3	16.0	83
Basin Index (%)		105			84
SALMON RIVER ABOVE SALMON BASIN
Banner Summit	7040	7.2	6.4	112	8.6	9.0	96
Galena	7470	4.3	4.2	102	3.8	6.1	62
Galena Summit	8780	5.0	5.6	89	5.0	6.8	74
Mill Creek Summit	8800	3.9	5.9₍₂₉₎	66	4.3	5.8	74
Moonshine	7440	-M	2.4	*	-M	4.1	*
Morgan Creek	7600	3.3	2.6	127	4.0	5.6	71
Vienna Mine	8960	6.5	8.4	77	5.7	10.1	56
Basin Index (%)		91			72
LEMHI BASIN
Beagle Springs	8850	2.3	2.9	79	2.3	4.1	56
Darkhorse Lake	8945	5.3	9.0	59	6.0	9.3	65
Lemhi Ridge	8100	1.8	3.2	56	2.9	4.6	63
Meadow Lake	9150	3.2	4.1	78	3.3	6.0	55
Moonshine	7440	-M	2.4	*	-M	4.1	*
Schwartz Lake	8630	2.5	2.9₍₂₅₎	86	4.1	5.4₍₂₅₎	76
Basin Index (%)		68			63
MF SALMON BASIN
Banner Summit	7040	7.2	6.4	112	8.6	9.0	96
Deadwood Summit	6860	12.8	9.8	131	12.7	12.6	101
Morgan Creek	7600	3.3	2.6	127	4.0	5.6	71
Basin Index (%)		124			93
SF SALMON BASIN
Big Creek Summit	6560	7.4	7.1	104	8.7	10.4	84
Deadwood Summit	6860	12.8	9.8	131	12.7	12.6	101
Secesh Summit	6540	10.8	6.6	164	12.6	10.2	124
Basin Index (%)		132			102
LITTLE SALMON BASIN
Bear Basin	5350	5.0	3.2	156	8.9	7.5	119
Brundage Reservoir	6250	8.8	6.8	129	11.9	12.6	94
Puhi Flat	6240	6.3	4.5	140	11.5	9.6	120
West Branch	5560	6.5	3.7	176	12.2	9.4	130
Basin Index (%)		146			114
SALMON BASIN
Banner Summit	7040	7.2	6.4	112	8.6	9.0	96
Beagle Springs	8850	2.3	2.9	79	2.3	4.1	56
Bear Basin	5350	5.0	3.2	156	8.9	7.5	119
Big Creek Summit	6560	7.4	7.1	104	8.7	10.4	84
Brundage Reservoir	6250	8.8	6.8	129	11.9	12.6	94
Darkhorse Lake	8945	5.3	9.0	59	6.0	9.3	65
Deadwood Summit	6860	12.8	9.8	131	12.7	12.6	101
Galena	7470	4.3	4.2	102	3.8	6.1	62
Galena Summit	8780	5.0	5.6	89	5.0	6.8	74
Lemhi Ridge	8100	1.8	3.2	56	2.9	4.6	63
Meadow Lake	9150	3.2	4.1	78	3.3	6.0	55
Mill Creek Summit	8800	3.9	5.9₍₂₉₎	66	4.3	5.8	74
Moonshine	7440	-M	2.4	*	-M	4.1	*
Moose Creek	6200	3.4	4.2	81	4.3	6.6	65
Morgan Creek	7600	3.3	2.6	127	4.0	5.6	71
Mountain Meadows	6320	5.2	5.5	95	7.7	9.6	80
Saddle Mtn.	7940	5.0	7.2	69	4.7	7.0	67
Schwartz Lake	8630	2.5	2.9₍₂₅₎	86	4.1	5.4₍₂₅₎	76
Secesh Summit	6540	10.8	6.6	164	12.6	10.2	124
Puhi Flat	6240	6.3	4.5	140	11.5	9.6	120
Vienna Mine	8960	6.5	8.4	77	5.7	10.1	56
West Branch	5560	6.5	3.7	176	12.2	9.4	130
Basin Index (%)		102			86

-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.