California/Nevada SNOTEL Precipitation Summary Update Report

California/Nevada SNOTEL Precipitation Summary 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, September 20, 2025

Basin Site Name	Elev (ft)
Basin Site Name	Elev (ft)	Month to Date Precipitation (in)	Median Monthly Total (in)	Pct of Monthly Total	Water Year to Date Precipitation (in)	Median Annual Total (in)	Pct of Annual Total
LAKE TAHOE
Mt Rose Ski Area	8810	0.2	0.2	100	49.7	48.4	103
Heavenly Valley	8540	0.5	0.3	167	32.9	30.3	109
Carson Pass	8360	1.7	0.4₍₁₆₎	425	32.3	36.8₍₁₆₎	88
Palisades Tahoe	8010	0.7	0.5	140	51.9	58.5	89
Marlette Lake	7860	0.5	0.3	167	30.3	29.8	102
Hagans Meadow	7740	0.3	0.3	100	28.9	29.6	98
Echo Peak	7650	1.1	0.4	275	50.4	53.7	94
Rubicon #2	7570	0.4	0.4	100	34.8	37.2	94
Tahoe City Cross	6760	1.3	0.3	433	36.4	33.0	110
Ward Creek #3	6750	0.7	0.4	175	63.6	65.4	97
Fallen Leaf	6250	1.3	0.3	433	30.0	30.2	99
Basin Index (%)		229			97
TRUCKEE RIVER
Mt Rose Ski Area	8810	0.2	0.2	100	49.7	48.4	103
Independence Lake	8340	0.7	0.4	175	49.0	44.2	111
Big Meadow	8240	0.2	0.3	67	27.5	28.9	95
Palisades Tahoe	8010	0.7	0.5	140	51.9	58.5	89
Marlette Lake	7860	0.5	0.3	167	30.3	29.8	102
Independence Camp	6970	0.5	0.4	125	24.3	27.2	89
Css Lab	6880	0.4	0.6	67	60.0	65.8	91
Tahoe City Cross	6760	1.3	0.3	433	36.4	33.0	110
Ward Creek #3	6750	0.7	0.4	175	63.6	65.4	97
Truckee #2	6500	0.6	0.3	200	32.0	31.7	101
Little Valley	6500	0.1	N/A	*	26.3	N/A	*
Independence Creek	6440	0.3	0.3	100	23.8	29.1	82
Basin Index (%)		152			97
CARSON RIVER
Ebbetts Pass	8660	0.9	0.6	150	47.9	49.1	98
Lost Lakes	8640	0.9	N/A	*	51.2	N/A	*
Horse Meadow	8580	0.4	0.3₍₁₇₎	133	24.5	22.1₍₁₇₎	111
Heavenly Valley	8540	0.5	0.3	167	32.9	30.3	109
Carson Pass	8360	1.7	0.4₍₁₆₎	425	32.3	36.8₍₁₆₎	88
Monitor Pass	8320	0.7	0.4	175	21.5	21.0	102
Burnside Lake	8180	0.4	0.2₍₁₇₎	200	35.6	36.4₍₁₇₎	98
Blue Lakes	8060	1.6	0.4	400	35.1	40.1	88
Forestdale Creek	8050	0.8	0.6₍₁₇₎	133	38.8	42.4₍₁₇₎	92
Marlette Lake	7860	0.5	0.3	167	30.3	29.8	102
Hagans Meadow	7740	0.3	0.3	100	28.9	29.6	98
Poison Flat	7730	0.8	0.5	160	28.8	31.6	91
Spratt Creek	6060	0.9	0.4	225	23.6	28.9	82
Basin Index (%)		202			96
WALKER RIVER
Leavitt Lake	9600	1.1	0.8	138	47.7	52.6	91
Virginia Lakes Ridge	9400	0.7	0.4	175	24.8	24.2	102
Summit Meadow	9360	1.3	0.3₍₁₇₎	433	26.7	23.9₍₁₇₎	112
Lobdell Lake	9260	0.6	0.4	150	24.8	22.6	110
Sonora Pass	8770	0.7	0.6	117	33.2	34.0	98
Monitor Pass	8320	0.7	0.4	175	21.5	21.0	102
Willow Flat CA	8220	1.4	N/A	*	26.0	N/A	*
Leavitt Meadows	7200	0.9	0.6	150	30.1	31.0	97
Basin Index (%)		171			100
NORTHERN GREAT BASIN
Granite Peak	8500	0.3	0.7	43	27.6	29.2	95
Summit Lk	7590	1.4	N/A	*	23.7	N/A	*
Dismal Swamp	7370	0.6	0.9	67	52.5	46.1	114
Cedar Pass	7060	0.8	0.4	200	39.5	31.8	124
Buckskin Lower	6920	0.7	0.8	88	22.7	24.0	95
Lamance Creek	6390	0.2	0.6	33	23.9	25.6	93
Disaster Peak	6260	0.4	0.3	133	20.0	19.7	102
Sheldon	5860	0.2	0.3	67	12.2	10.6	115
Basin Index (%)		80			106
NEVADA
UPPER HUMBOLDT RIVER
Lamoille Upper	8990	0.8	N/A	*	35.1	N/A	*
Corral Canyon	8440	0.5	1.2	42	34.5	28.0	123
Jacks Peak	8440	0.3	1.2	25	29.9	33.2	90
Green Mountain	8180	0.1	1.0	10	31.3	30.5	103
Lamoille #3	8030	0.1	1.2	8	27.6	30.5	90
Bear Creek	8090	0.0	1.0	0	29.9	33.8	88
Dorsey Basin	7900	0.3	1.2	25	29.4	32.1	92
Pole Canyon	7760	0.2	N/A	*	29.5	N/A	*
Stag Mountain	7640	0.1	N/A	*	9.9	N/A	*
Jakes Creek	7380	0.1	N/A	*	18.4	N/A	*
Jack Creek Upper	7380	0.2	1.1	18	24.6	27.4	90
Seventysix Creek	7360	0.2	1.0	20	19.4	21.6	90
Draw Creek	7300	0.2	0.5	40	19.1	20.4	94
Tent Mtn Lower	7110	0.0	N/A	*	17.7	N/A	*
Fry Canyon	6790	0.0	N/A	*	20.6	N/A	*
Dry Creek	6560	0.3	N/A	*	22.2	N/A	*
Taylor Canyon	6320	0.2	0.6	33	9.8	13.2	74
Basin Index (%)		21			94
LOWER HUMBOLDT RIVER
Big Creek Sum	8710	0.7	0.6	117	20.8	23.2	90
Granite Peak	8500	0.3	0.7	43	27.6	29.2	95
Toe Jam	7700	0.6	1.1₍₁₁₎	55	25.6	25.6₍₁₁₎	100
Snowstorm Mtn	7410	0.3	N/A	*	19.5	N/A	*
Lewis Peak	7380	0.2	0.8₍₂₀₎	25	24.4	21.2₍₂₀₎	115
Porter Canyon	7190	0.5	0.4₍₁₀₎	125	10.0	11.8₍₁₀₎	85
Buckskin Lower	6920	0.7	0.8	88	22.7	24.0	95
Midas	6630	0.2	N/A	*	13.1	N/A	*
Golconda	6630	0.5	N/A	*	21.6	N/A	*
Lamance Creek	6390	0.2	0.6	33	23.9	25.6	93
Basin Index (%)		64			97
CLOVER VALLEY & FRANKLIN RIVER
Lamoille Upper	8990	0.8	N/A	*	35.1	N/A	*
Corral Canyon	8440	0.5	1.2	42	34.5	28.0	123
Green Mountain	8180	0.1	1.0	10	31.3	30.5	103
Hole-in-Mountain	8170	0.3	1.1₍₂₉₎	27	37.5	34.7₍₂₉₎	108
Lamoille #3	8030	0.1	1.2	8	27.6	30.5	90
Dorsey Basin	7900	0.3	1.2	25	29.4	32.1	92
Pole Canyon	7760	0.2	N/A	*	29.5	N/A	*
Basin Index (%)		23			103
SNAKE RIVER
Pole Creek R.S.	8360	0.1	0.7	14	18.5	20.9	89
Bear Creek	8090	0.0	1.0	0	29.9	33.8	88
Stag Mountain	7640	0.1	N/A	*	9.9	N/A	*
Bostetter R.S.	7530	0.3	1.0	30	26.1	28.1	93
Jakes Creek	7380	0.1	N/A	*	18.4	N/A	*
Seventysix Creek	7360	0.2	1.0	20	19.4	21.6	90
Wilson Creek	7110	0.1	0.8	12	22.6	27.7	82
Merritt Mountain	6920	0.1	N/A	*	15.2	N/A	*
Big Bend	6890	0.4	0.8	50	17.2	17.2	100
Magic Mountain	6940	0.3	0.9	33	27.2	32.6	83
ONeil Creek	6490	0.2	N/A	*	12.0	N/A	*
Basin Index (%)		23			88
OWYHEE RIVER
Jacks Peak	8440	0.3	1.2	25	29.9	33.2	90
Toe Jam	7700	0.6	1.1₍₁₁₎	55	25.6	25.6₍₁₁₎	100
Jack Creek Upper	7380	0.2	1.1	18	24.6	27.4	90
Fawn Creek	7040	0.0	1.0	0	27.4	32.1	85
Merritt Mountain	6920	0.1	N/A	*	15.2	N/A	*
Big Bend	6890	0.4	0.8	50	17.2	17.2	100
Fry Canyon	6790	0.0	N/A	*	20.6	N/A	*
Laurel Draw	6680	0.6	0.9	67	25.6	25.8	99
Columbia Basin	6480	0.0	N/A	*	21.2	N/A	*
Taylor Canyon	6320	0.2	0.6	33	9.8	13.2	74
Basin Index (%)		34			92
EASTERN NEVADA
Cave Mountain	10580	0.7	N/A	*	14.2	N/A	*
Wheeler Peak	10070	0.2	1.4₍₁₀₎	14	19.6	28.2₍₁₀₎	70
Berry Creek	9350	1.4	1.3	108	23.6	26.4	89
Defiance Mines	9320	0.5	N/A	*	16.2	N/A	*
Ward Mountain	9170	0.6	1.0	60	18.4	21.2	87
Takka Wiiya	9110	0.2	N/A	*	21.7	N/A	*
Big Creek Sum	8710	0.7	0.6	117	20.8	23.2	90
Corduroy Flat	8640	1.0	N/A	*	12.5	N/A	*
Silver Creek Nv	8220	0.2	N/A	*	9.1	N/A	*
Diamond Peak	8030	0.2	0.8	25	17.2	20.3	85
Vacarro Springs	7890	0.4	N/A	*	18.4	N/A	*
Kalamazoo	7740	0.7	N/A	*	14.7	N/A	*
Bird Creek	7540	0.4	N/A	*	13.1	N/A	*
White River Nv	7370	1.3	N/A	*	9.7	N/A	*
Basin Index (%)		61			83
SOUTHERN NEVADA - Spring Mountains
Bristlecone Trail	8900	1.2	0.9₍₁₂₎	133	17.4	18.8₍₁₂₎	93
Lee Canyon	8620	1.8	1.0₍₁₂₎	180	15.6	22.1₍₁₂₎	71
Rainbow Canyon	7840	2.9	1.2₍₁₂₎	242	22.9	26.2₍₁₂₎	87
Basin Index (%)		190			83

-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 % Monthly Total represents the precipitation accumulated from the 1st day of the current
month through the current day found at selected SNOTEL sites in or near the basin compared
to the Median (or Average) total precipitation for the current month for those sites.

The % Annual Total represents the precipitation accumulated from the start of the water year
(Oct 1) through the current day found at selected SNOTEL sites in or near the basin compared
to the Median (or Average) total precipitation for the entire water year for those sites.

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.