California SNOTEL Snowpack Update Report

California SNOTEL Snowpack 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 Sunday, April 20, 2025

Basin Site Name	Elev (ft)	Snow Water Equivalent				Percent of
Basin Site Name	Elev (ft)	Current (in)	Today's Median (in)	Median Peak (in)	Median Peak Date	Today's Median	Median Peak
TRUCKEE RIVER
Mt Rose Ski Area	8810	32.2	34.8	37.4	Apr 15	93	86
Independence Lake	8340	48.2	44.0	45.1	Apr 25	110	107
Big Meadow	8240	-M	15.9	21.0	Apr 01	*	*
Palisades Tahoe	8010	31.8	43.8	50.8	Apr 05	73	63
Marlette Lake	7860	17.5	16.0	22.7	Mar 29	109	77
Independence Camp	6970	7.5	7.5	17.4	Mar 24	100	43
Css Lab	6880	21.5	24.2	37.9	Mar 26	89	57
Tahoe City Cross	6760	0.0	0.8	14.1	Mar 08	0*	0*
Ward Creek #3	6750	30.7	25.7	37.3	Mar 29	119	82
Truckee #2	6500	4.0	6.4	17.8	Mar 14	62	22
Little Valley	6500	0.0	N/A	N/A	N/A	*	*
Independence Creek	6440	0.3	3.6	14.2	Mar 22	8	2
Basin Index (%)		94
LAKE TAHOE
Mt Rose Ski Area	8810	32.2	34.8	37.4	Apr 15	93	86
Heavenly Valley	8540	14.1	18.6	23.8	Mar 30	76	59
Carson Pass	8360	20.9	24.6₍₁₆₎	30.1₍₁₆₎	Apr 07₍₁₆₎	85	69
Palisades Tahoe	8010	31.8	43.8	50.8	Apr 05	73	63
Marlette Lake	7860	17.5	16.0	22.7	Mar 29	109	77
Hagans Meadow	7740	4.0	4.5	17.2	Mar 12	89	23
Echo Peak	7650	30.0	27.2	43.0	Mar 28	110	70
Rubicon #2	7570	19.8	21.3	26.5	Apr 05	93	75
Tahoe City Cross	6760	0.0	0.8	14.1	Mar 08	0*	0*
Ward Creek #3	6750	30.7	25.7	37.3	Mar 29	119	82
Fallen Leaf	6250	0.0	0.0	N/A	N/A	*	*
Basin Index (%)		92
CARSON RIVER
Ebbetts Pass	8660	21.4	28.4	35.1	Apr 12	75	61
Lost Lakes	8640	43.8	N/A	N/A	N/A	*	*
Horse Meadow	8580	12.9	13.0₍₁₇₎	20.5₍₁₇₎	Mar 26₍₁₇₎	99	63
Heavenly Valley	8540	14.1	18.6	23.8	Mar 30	76	59
Carson Pass	8360	20.9	24.6₍₁₆₎	30.1₍₁₆₎	Apr 07₍₁₆₎	85	69
Monitor Pass	8320	8.1	9.8	15.6	Mar 28	83	52
Burnside Lake	8180	12.1	15.7₍₁₇₎	24.7₍₁₇₎	Mar 27₍₁₇₎	77	49
Blue Lakes	8060	21.6	25.6	29.2	Apr 14	84	74
Forestdale Creek	8050	25.8	29.1₍₁₇₎	33.8₍₁₇₎	Apr 05₍₁₇₎	89	76
Marlette Lake	7860	17.5	16.0	22.7	Mar 29	109	77
Hagans Meadow	7740	4.0	4.5	17.2	Mar 12	89	23
Poison Flat	7730	12.9	14.4	18.3	Apr 03	90	70
Spratt Creek	6060	0.0	0.0	N/A	N/A	*	*
Basin Index (%)		86
WALKER RIVER
Leavitt Lake	9600	50.3	56.6	59.0	Apr 25	89	85
Virginia Lakes Ridge	9400	15.5	15.3	16.2	Apr 18	101	96
Summit Meadow	9360	10.7	17.0₍₁₇₎	20.7₍₁₇₎	Apr 05₍₁₇₎	63	52
Lobdell Lake	9260	8.6	10.0	16.6	Apr 04	86	52
Sonora Pass	8770	19.7	21.2	23.4	Apr 17	93	84
Monitor Pass	8320	8.1	9.8	15.6	Mar 28	83	52
Willow Flat CA	8220	5.6	N/A	N/A	N/A	*	*
Leavitt Meadows	7200	0.0	0.1	N/A	N/A	0*	*
Basin Index (%)		87
KLAMATH RIVER
Annie Springs	6020	56.4	39.3₍₂₀₎	40.5₍₂₀₎	Apr 19₍₂₀₎	144	139
Big Red Mountain	6060	29.6	25.5	29.4	Apr 19	116	101
Billie Creek Divide	5280	21.9	14.6	22.7	Mar 16	150	96
Chemult Alternate	4850	0.0	0.0	8.4	Feb 29	*	0*
Cold Springs Camp	5940	23.5	22.0	28.2	Mar 16	107	83
Crazyman Flat	6190	9.0	7.6₍₁₉₎	15.0₍₁₉₎	Mar 20₍₁₉₎	118	60
Crowder Flat	5180	0.0	0.0₍₂₁₎	4.6₍₂₁₎	Mar 03₍₂₁₎	*	0*
Diamond Lake	5280	13.5	3.2	16.1	Mar 10	422	84
Fish Lk.	4660	4.7	1.8	13.0	Mar 10	261	36
Fourmile Lake	5970	30.4	23.2	28.4	Apr 01	131	107
Gerber Reservoir	4880	0.3	0.0₍₂₂₎	2.4₍₂₂₎	Jan 28₍₂₂₎	*	12*
Howard Prairie	4580	0.2	N/A	N/A	N/A	*	*
Quartz Mountain	5710	0.0	0.0₍₂₇₎	2.6₍₂₇₎	Feb 08₍₂₇₎	*	0*
Sevenmile Marsh	5690	36.5	25.1	31.6	Apr 01	145	116
Silver Creek	5750	3.1	0.0	10.9	Mar 08	*	28*
State Line	5690	0.0	N/A	N/A	N/A	*	*
Strawberry	5760	0.0	0.0	5.8	Mar 02	*	0*
Summer Rim	7080	3.8	N/A	N/A	N/A	*	*
Sun Pass	5400	-M	10.2₍₁₄₎	19.8₍₁₄₎	Mar 22₍₁₄₎	*	*
Swan Lake Mtn	6840	34.4	18.4₍₁₄₎	25.1₍₁₃₎	Apr 01₍₁₃₎	187	137
Taylor Butte	5030	0.0	0.0	7.6	Mar 04	*	0*
Basin Index (%)		146

-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 snow water equivalent percent of median (or average) represents the current snow water
equivalent found at selected SNOTEL sites in or near the basin compared to the median (or average) value
for those sites on this day.

The snow water equivalent percent of median (or average) peak represents the current
snow water equivalent at selected SNOTEL sites in or near the basin compared to the median (or average)
of the maximum seasonal values observed each 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.