California SNOTEL Snow/Precipitation Update Report

California 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, April 28, 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
TRUCKEE RIVER
Mt Rose Ski Area	8810	31.0	33.7	92	47.0	44.8	105
Independence Lake	8340	48.1	43.8	110	45.8	40.0	114
Big Meadow	8240	14.1	13.6	104	25.0	25.2	99
Palisades Tahoe	8010	28.2	38.8	73	47.8	51.9	92
Marlette Lake	7860	17.1	13.0	132	27.6	26.0	106
Independence Camp	6970	3.4	3.0	113	20.8	23.8	87
Css Lab	6880	16.4	18.0	91	56.4	58.1	97
Tahoe City Cross	6760	-M	0.0	*	-M	29.1	*
Ward Creek #3	6750	20.3	21.0	97	60.4	57.2	106
Truckee #2	6500	0.7	0.9	78*	29.1	28.8	101
Little Valley	6500	0.0	N/A	*	23.8	N/A	*
Independence Creek	6440	0.8	0.0	*	21.6	25.2	86
Basin Index (%)		97			100
LAKE TAHOE
Mt Rose Ski Area	8810	31.0	33.7	92	47.0	44.8	105
Heavenly Valley	8540	11.0	14.8	74	28.9	26.1	111
Carson Pass	8360	18.4	22.0₍₁₆₎	84	27.4	34.2₍₁₆₎	80
Palisades Tahoe	8010	28.2	38.8	73	47.8	51.9	92
Marlette Lake	7860	17.1	13.0	132	27.6	26.0	106
Hagans Meadow	7740	0.4	0.2	200*	25.3	25.2	100
Echo Peak	7650	24.1	22.9	105	47.2	48.6	97
Rubicon #2	7570	17.7	19.4	91	32.5	33.4	97
Tahoe City Cross	6760	-M	0.0	*	-M	29.1	*
Ward Creek #3	6750	20.3	21.0	97	60.4	57.2	106
Fallen Leaf	6250	0.0	0.0	*	27.0	26.4	102
Basin Index (%)		91			99
CARSON RIVER
Ebbetts Pass	8660	18.9	25.6	74	41.9	44.0	95
Lost Lakes	8640	41.5	N/A	*	45.8	N/A	*
Horse Meadow	8580	10.4	11.2₍₁₇₎	93	21.5	19.8₍₁₇₎	109
Heavenly Valley	8540	11.0	14.8	74	28.9	26.1	111
Carson Pass	8360	18.4	22.0₍₁₆₎	84	27.4	34.2₍₁₆₎	80
Monitor Pass	8320	3.9	4.3	91	16.1	17.7	91
Burnside Lake	8180	8.3	11.9₍₁₇₎	70	31.2	34.3₍₁₇₎	91
Blue Lakes	8060	19.4	23.8	82	29.2	34.6	84
Forestdale Creek	8050	22.5	26.7₍₁₇₎	84	35.0	40.6₍₁₇₎	86
Marlette Lake	7860	17.1	13.0	132	27.6	26.0	106
Hagans Meadow	7740	0.4	0.2	200*	25.3	25.2	100
Poison Flat	7730	10.0	10.6	94	23.8	25.7	93
Spratt Creek	6060	0.0	0.0	*	19.6	24.4	80
Basin Index (%)		85			93
WALKER RIVER
Leavitt Lake	9600	49.4	57.9	85	41.5	45.8	91
Virginia Lakes Ridge	9400	14.8	14.2	104	20.7	20.9	99
Summit Meadow	9360	8.7	13.9₍₁₇₎	63	19.0	19.2₍₁₇₎	99
Lobdell Lake	9260	5.0	7.7	65	18.8	18.7	101
Sonora Pass	8770	18.0	19.1	94	27.5	29.6	93
Monitor Pass	8320	3.9	4.3	91	16.1	17.7	91
Willow Flat CA	8220	0.8	N/A	*	19.9	N/A	*
Leavitt Meadows	7200	0.0	0.0	*	24.4	26.6	92
Basin Index (%)		85			94
KLAMATH RIVER
Annie Springs	6020	52.0	37.0₍₂₀₎	141	69.8	55.8₍₂₀₎	125
Big Red Mountain	6060	28.7	24.2	119	60.2	45.8	131
Billie Creek Divide	5280	15.7	11.6	135	52.9	43.8	121
Chemult Alternate	4850	0.0	0.0	*	28.7	22.3	129
Cold Springs Camp	5940	17.0	19.6	87	39.3	N/A	*
Crazyman Flat	6190	0.8	2.0₍₁₉₎	40	36.0	27.0₍₁₉₎	133
Crowder Flat	5180	-M	0.0₍₂₁₎	*	-M	12.9₍₂₁₎	*
Diamond Lake	5280	6.3	0.0	*	53.4	40.8	131
Fish Lk.	4660	0.1	0.0	*	43.3	37.0	117
Fourmile Lake	5970	27.3	21.2	129	59.5	45.3	131
Gerber Reservoir	4880	0.0	0.0₍₂₂₎	*	18.2	11.6₍₂₂₎	157
Howard Prairie	4580	0.0	N/A	*	30.8	N/A	*
Quartz Mountain	5710	0.0	0.0₍₂₇₎	*	21.5	13.0₍₁₇₎	165
Sevenmile Marsh	5690	32.5	23.9	136	61.0	50.6	121
Silver Creek	5750	0.0	0.0	*	31.0	20.4	152
State Line	5690	0.0	N/A	*	20.3	N/A	*
Strawberry	5760	0.0	0.0	*	26.3	16.7	157
Summer Rim	7080	0.1	N/A	*	22.3	21.6	103
Sun Pass	5400	22.7	5.5₍₁₄₎	413	48.8	33.0₍₁₄₎	148
Swan Lake Mtn	6840	30.1	16.0₍₁₄₎	188	46.4	27.9₍₁₄₎	166
Taylor Butte	5030	0.0	0.0	*	23.9	15.6	153
Basin Index (%)		145			133

-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.