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 Thursday, November 21, 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	11.6	7.4	157	15.4	17.4	89
Garver Creek	4250	2.0	1.9	105	4.6	4.2₍₂₄₎	110
Hawkins Lake	6450	4.8	4.1	117	10.0	8.0	125
Hidden Lake	5040	8.3	4.8₍₂₀₎	173	15.6	15.0₍₂₀₎	104
Myrtle Creek	3520	1.1	0.0₍₁₇₎	*	5.1	5.3₍₁₇₎	96
Basin Index (%)		153			102
IDAHO PEND OREILLE RIVER REGION
Bear Mountain	5400	11.6	7.4	157	15.4	17.4	89
Bunchgrass Mdw	5000	5.4	4.0	135	7.8	8.5	92
Mosquito Ridge	5260	6.2	4.2	148	8.3	9.8	85
Quartz Peak	4700	5.5	1.7	324*	9.1	7.1	128
Ragged Mountain	4210	3.2	1.2₍₁₄₎	267*	8.3	7.0₍₁₄₎	119
Schweitzer Basin	6090	11.9	6.4	186	11.6	8.5	136
Basin Index (%)		176			104
COEUR d'ALENE BASIN
Humboldt Gulch	4250	1.8	1.2	150	7.1	8.8	81
Lookout	5190	4.0	2.2	182*	7.8	8.4	93
Mosquito Ridge	5260	6.2	4.2	148	8.3	9.8	85
Sunset	5540	2.8	1.9	147*	5.6	8.0	70
Basin Index (%)		156			82
ST. JOE BASIN
Hoodoo Basin	6050	6.5	4.8	135	9.8	10.4	94
Lost Lake	6110	9.5	6.2	153	12.1	12.3	98
Mica Creek	4510	3.3	1.8	183*	8.1	8.6	94
Sherwin	3200	1.1	0.4	275*	5.7	6.2	92
Basin Index (%)		155			95
SPOKANE BASIN
Hoodoo Basin	6050	6.5	4.8	135	9.8	10.4	94
Humboldt Gulch	4250	1.8	1.2	150	7.1	8.8	81
Lookout	5190	4.0	2.2	182*	7.8	8.4	93
Lost Lake	6110	9.5	6.2	153	12.1	12.3	98
Mica Creek	4510	3.3	1.8	183*	8.1	8.6	94
Mosquito Ridge	5260	6.2	4.2	148	8.3	9.8	85
Quartz Peak	4700	5.5	1.7	324*	9.1	7.1	128
Ragged Mountain	4210	3.2	1.2₍₁₄₎	267*	8.3	7.0₍₁₄₎	119
Sherwin	3200	1.1	0.4	275*	5.7	6.2	92
Sunset	5540	2.8	1.9	147*	5.6	8.0	70
Basin Index (%)		171*			95
SELWAY BASIN
Mountain Meadows	6320	3.4	3.2	106	5.6	6.6	85
Nez Perce Camp	5650	2.1	1.5	140	3.6	5.4	67
Twelvemile Creek	5600	3.3	1.2	275*	6.6	8.4	79
Twin Lakes	6400	6.0	4.7	128	9.4	11.3	83
Basin Index (%)		140			79
LOCHSA BASIN
Lolo Pass	5240	3.6	2.7	133*	6.1	7.5	81
Savage Pass	6190	3.2	3.6	89	6.1	7.6	80
Basin Index (%)		108			81
NF CLEARWATER BASIN
Cool Creek	6280	8.0	5.0₍₂₉₎	160	9.9	10.5₍₂₉₎	94
Crater Meadows	5960	8.1	5.8	140	11.2	11.5	97
Elk Butte	5690	6.3	2.6	242*	8.5	8.6	99
Hemlock Butte	5810	8.7	4.4	198*	7.5	N/A	*
Hoodoo Basin	6050	6.5	4.8	135	9.8	10.4	94
Lolo Pass	5240	3.6	2.7	133*	6.1	7.5	81
Lost Lake	6110	9.5	6.2	153	12.1	12.3	98
Pierce R.S.	3080	0.9	0.0₍₁₁₎	*	6.4	7.7₍₁₁₎	83
Shanghi Summit	4600	4.2	1.8	233*	9.2	8.8	105
Basin Index (%)		168*			95
CLEARWATER BASIN
Cool Creek	6280	8.0	5.0₍₂₉₎	160	9.9	10.5₍₂₉₎	94
Crater Meadows	5960	8.1	5.8	140	11.2	11.5	97
Elk Butte	5690	6.3	2.6	242*	8.5	8.6	99
Hemlock Butte	5810	8.7	4.4	198*	7.5	N/A	*
Hoodoo Basin	6050	6.5	4.8	135	9.8	10.4	94
Lolo Pass	5240	3.6	2.7	133*	6.1	7.5	81
Lost Lake	6110	9.5	6.2	153	12.1	12.3	98
Moscow Mountain	4700	3.7	1.4₍₂₀₎	264*	6.8	6.6₍₂₀₎	103
Mountain Meadows	6320	3.4	3.2	106	5.6	6.6	85
Nez Perce Camp	5650	2.1	1.5	140	3.6	5.4	67
Pierce R.S.	3080	0.9	0.0₍₁₁₎	*	6.4	7.7₍₁₁₎	83
Savage Pass	6190	3.2	3.6	89	6.1	7.6	80
Shanghi Summit	4600	4.2	1.8	233*	9.2	8.8	105
Sherwin	3200	1.1	0.4	275*	5.7	6.2	92
Twelvemile Creek	5600	3.3	1.2	275*	6.6	8.4	79
Twin Lakes	6400	6.0	4.7	128	9.4	11.3	83
Basin Index (%)		159			90
SALMON RIVER ABOVE SALMON BASIN
Banner Summit	7040	4.2	2.6	162*	5.0	5.2	96
Galena	7470	2.1	2.0	105	1.7	3.6	47
Galena Summit	8780	2.7	3.4	79	2.8	4.2	67
Mill Creek Summit	8800	2.5	3.5₍₂₉₎	71	2.9	3.8	76
Moonshine	7440	1.4	1.2	117	1.6	2.8	57
Morgan Creek	7600	2.1	1.3	162	2.6	3.6	72
Vienna Mine	8960	3.9	4.4	89	3.5	6.2	56
Basin Index (%)		103			68
LEMHI BASIN
Beagle Springs	8850	1.9	1.8	106	2.0	3.0	67
Darkhorse Lake	8945	3.8	5.6	68	4.4	6.2	71
Lemhi Ridge	8100	1.5	2.1	71	2.6	3.5	74
Meadow Lake	9150	2.3	2.6	88	2.7	4.2	64
Moonshine	7440	1.4	1.2	117	1.6	2.8	57
Schwartz Lake	8630	1.8	1.7₍₂₅₎	106	3.3	3.9₍₂₅₎	85
Basin Index (%)		85			70
MF SALMON BASIN
Banner Summit	7040	4.2	2.6	162*	5.0	5.2	96
Deadwood Summit	6860	7.4	4.3	172	7.0	7.6	92
Morgan Creek	7600	2.1	1.3	162	2.6	3.6	72
Basin Index (%)		167			89
SF SALMON BASIN
Big Creek Summit	6560	4.9	3.3	148	5.6	6.2	90
Deadwood Summit	6860	7.4	4.3	172	7.0	7.6	92
Secesh Summit	6540	6.1	2.7	226*	7.5	6.0	125
Basin Index (%)		179			102
LITTLE SALMON BASIN
Bear Basin	5350	4.0	1.0	400*	5.8	4.7	123
Brundage Reservoir	6250	6.0	2.4	250*	7.0	6.6	106
Puhi Flat	6240	5.2	1.8	289*	7.4	5.6	132
West Branch	5560	4.6	1.6	288*	6.8	5.8	117
Basin Index (%)		291*			119
SALMON BASIN
Banner Summit	7040	4.2	2.6	162*	5.0	5.2	96
Beagle Springs	8850	1.9	1.8	106	2.0	3.0	67
Bear Basin	5350	4.0	1.0	400*	5.8	4.7	123
Big Creek Summit	6560	4.9	3.3	148	5.6	6.2	90
Brundage Reservoir	6250	6.0	2.4	250*	7.0	6.6	106
Darkhorse Lake	8945	3.8	5.6	68	4.4	6.2	71
Deadwood Summit	6860	7.4	4.3	172	7.0	7.6	92
Galena	7470	2.1	2.0	105	1.7	3.6	47
Galena Summit	8780	2.7	3.4	79	2.8	4.2	67
Lemhi Ridge	8100	1.5	2.1	71	2.6	3.5	74
Meadow Lake	9150	2.3	2.6	88	2.7	4.2	64
Mill Creek Summit	8800	2.5	3.5₍₂₉₎	71	2.9	3.8	76
Moonshine	7440	1.4	1.2	117	1.6	2.8	57
Moose Creek	6200	1.9	2.0	95	2.6	4.5	58
Morgan Creek	7600	2.1	1.3	162	2.6	3.6	72
Mountain Meadows	6320	3.4	3.2	106	5.6	6.6	85
Saddle Mtn.	7940	2.9	3.6	81	3.2	4.4	73
Schwartz Lake	8630	1.8	1.7₍₂₅₎	106	3.3	3.9₍₂₅₎	85
Secesh Summit	6540	6.1	2.7	226*	7.5	6.0	125
Puhi Flat	6240	5.2	1.8	289*	7.4	5.6	132
Vienna Mine	8960	3.9	4.4	89	3.5	6.2	56
West Branch	5560	4.6	1.6	288*	6.8	5.8	117
Basin Index (%)		132			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.

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.