Colorado SNOTEL Snowpack Update Report

Colorado 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 Friday, March 28, 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
GUNNISON RIVER BASIN
Butte	10190	13.3	12.4	13.7	Apr 08	107	97
Castle Peak	11500	22.9	N/A	N/A	N/A	*	*
Cochetopa Pass	10020	4.9	4.2₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	117	102
Columbine Pass	9160	10.5	15.2	18.0	Mar 26	69	58
Idarado	9780	12.2	12.6	14.4	Apr 06	97	85
Mc Clure Pass	8760	10.3	15.5	16.6	Apr 04	66	62
Mesa Lakes	10160	12.6	16.3	19.0	Apr 15	77	66
Overland Res.	9890	6.4	11.0	12.4	Apr 05	58	52
Park Cone	9600	8.7	9.6	10.4	Apr 09	91	84
Park Reservoir	9990	16.1	23.3	27.4	Apr 26	69	59
Porphyry Creek	10790	16.1	14.7	17.0	Apr 15	110	95
Rat Creek	11680	10.7	N/A	N/A	N/A	*	*
Red Mountain Pass	11050	20.3	21.1	25.0	Apr 25	96	81
Sargents Mesa	11490	7.0	10.2₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	69	61
Schofield Pass	10640	24.7	28.8	35.1	Apr 19	86	70
Slumgullion	11560	11.4	13.0	15.0	Apr 21	88	76
Upper Taylor	10710	12.2	12.5₍₁₁₎	13.6₍₁₁₎	Apr 03₍₁₁₎	98	90
Wager Gulch	11110	9.4	N/A	N/A	N/A	*	*
Basin Index (%)		85
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10960	19.6	20.4₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	96	78
Bear River	9100	8.9	10.0₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	89	74
Beaver Ck Village	8530	10.7	11.1₍₁₇₎	11.7₍₁₇₎	Apr 02₍₁₇₎	96	91
Berthoud Summit	11300	20.2	17.8	23.2	May 03	113	87
Bison Lake	10950	18.2	22.0	26.9	Apr 29	83	68
Buffalo Park	9240	12.8	13.7₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	93	86
Castle Peak	11500	22.9	N/A	N/A	N/A	*	*
Chapman Tunnel	10090	12.2	13.8₍₁₃₎	15.4₍₁₃₎	Apr 19₍₁₃₎	88	79
Columbine	9170	24.6	21.5	24.6	Apr 05	114	100
Copper Mountain	10500	15.9	14.2	17.4	Apr 26	112	91
Elliot Ridge	10550	20.6	18.1₍₁₁₎	23.2₍₁₁₎	Apr 25₍₁₁₎	114	89
Fool Creek	11130	20.3	N/A	N/A	N/A	*	*
Fremont Pass	11310	16.7	15.2	20.8	May 11	110	80
Grizzly Peak	11110	18.8	16.2	19.6	Apr 21	116	96
High Lonesome	10630	18.8	N/A	N/A	N/A	*	*
Hoosier Pass	11600	13.5	14.2	17.3	Apr 27	95	78
Independence Pass	10570	15.3	15.4	17.4	Apr 18	99	88
Ivanhoe	10540	16.0	13.5₍₂₉₎	17.2₍₂₉₎	Apr 26₍₂₉₎	119	93
Jones Pass	10420	16.3	13.6₍₂₁₎	16.8₍₂₁₎	Apr 27₍₂₁₎	120	97
Kiln	9610	11.1	11.5	13.2	Apr 07	97	84
Lake Irene	10680	21.7	22.6	25.4	Apr 26	96	85
Lynx Pass	8910	8.6	10.4	11.5	Apr 04	83	75
Mc Clure Pass	8760	10.3	15.5	16.6	Apr 04	66	62
Mccoy Park	9500	12.2	14.0₍₁₈₎	14.6₍₁₈₎	Apr 07₍₁₈₎	87	84
Mesa Lakes	10160	12.6	16.3	19.0	Apr 15	77	66
Middle Fork Camp	8960	10.1	10.5₍₁₉₎	11.5₍₁₉₎	Apr 04₍₁₉₎	96	88
Nast Lake	8710	6.9	7.8	8.8	Mar 28	88	78
North Lost Trail	9190	13.4	16.2	17.4	Apr 04	83	77
Overland Res.	9890	6.4	11.0	12.4	Apr 05	58	52
Park Reservoir	9990	16.1	23.3	27.4	Apr 26	69	59
Phantom Valley	9030	9.6	9.3	10.4	Mar 30	103	92
Schofield Pass	10640	24.7	28.8	35.1	Apr 19	86	70
Stillwater Creek	8760	6.7	N/A	N/A	N/A	*	*
Summit Ranch	9350	11.1	10.6	11.4	Apr 09	105	97
Vail Mountain	10290	15.1	18.0	20.8	Apr 27	84	73
Willow Creek Pass	9520	12.1	12.2	16.4	May 03	99	74
Basin Index (%)		95
SOUTH PLATTE RIVER BASIN
Bear Lake	9490	17.8	16.2	19.8	Apr 27	110	90
Berthoud Summit	11300	20.2	17.8	23.2	May 03	113	87
Black Mountain	8950	9.1	9.9₍₁₀₎	12.5₍₁₀₎	Apr 17₍₁₀₎	92	73
Buckskin Joe	11160	8.0	9.4₍₂₁₎	12.6₍₂₁₎	May 02₍₂₁₎	85	63
Copeland Lake	8570	0.2	1.6	6.0	Mar 08	12	3
Deadman Hill	10240	16.8	15.5	21.8	May 04	108	77
Echo Lake	10660	6.4	6.8₍₂₂₎	9.0₍₂₂₎	Apr 29₍₂₂₎	94	71
Hoosier Pass	11600	13.5	14.2	17.3	Apr 27	95	78
Hourglass Lake	9380	11.4	10.7₍₁₂₎	13.0₍₁₂₎	Apr 19₍₁₂₎	107	88
Jackwhacker Gulch	11030	11.0	11.7₍₂₂₎	14.4₍₂₂₎	Apr 25₍₂₂₎	94	76
Joe Wright	10140	21.6	19.4	24.0	May 05	111	90
Lake Eldora	9700	11.1	11.6	14.0	Apr 09	96	79
Lake Irene	10680	21.7	22.6	25.4	Apr 26	96	85
Long Draw Resv	9990	15.6	16.8₍₁₁₎	18.3₍₁₁₎	Apr 27₍₁₁₎	93	85
Loveland Basin	11410	17.8	18.5₍₂₈₎	24.4₍₂₈₎	May 02₍₂₈₎	96	73
Michigan Creek	10700	9.0	10.0₍₂₂₎	13.2₍₂₂₎	Apr 26₍₂₂₎	90	68
Niwot	9940	12.0	11.4	15.0	Apr 19	105	80
Rough And Tumble	10420	5.0	5.9₍₂₂₎	8.3₍₂₂₎	Apr 24₍₂₂₎	85	60
Sawtooth	9640	24.4	N/A	N/A	N/A	*	*
University Camp	10330	14.6	14.4	19.9	May 07	101	73
Wild Basin	9410	13.4	15.0₍₁₅₎	18.6₍₁₅₎	Apr 25₍₁₅₎	89	72
Willow Park	10710	17.0	16.0	21.0	Apr 29	106	81
Basin Index (%)		99
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10960	19.6	20.4₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	96	78
Blackhall Mtn	9830	27.2	28.8₍₁₁₎	34.6₍₁₁₎	Apr 27₍₁₁₎	94	79
Columbine	9170	24.6	21.5	24.6	Apr 05	114	100
Deadman Hill	10240	16.8	15.5	21.8	May 04	108	77
Joe Wright	10140	21.6	19.4	24.0	May 05	111	90
Never Summer	10300	18.2	18.9₍₁₈₎	23.8₍₁₈₎	May 11₍₁₈₎	96	76
Rawah	9100	9.9	10.4₍₁₈₎	12.2₍₁₈₎	Apr 07₍₁₈₎	95	81
Roach	9710	12.6	14.8	17.5	Apr 25	85	72
Tower	10610	40.9	40.6	49.0	May 07	101	83
Whiskey Park	8950	25.7	25.3	30.8	Apr 17	102	83
Willow Creek Pass	9520	12.1	12.2	16.4	May 03	99	74
Zirkel	9320	24.5	27.2₍₁₈₎	28.5₍₁₈₎	Apr 07₍₁₈₎	90	86
Basin Index (%)		99
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7460	8.0	11.0	12.6	Mar 27	73	63
Bear River	9100	8.9	10.0₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	89	74
Bison Lake	10950	18.2	22.0	26.9	Apr 29	83	68
Buffalo Park	9240	12.8	13.7₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	93	86
Burro Mountain	9290	12.7	14.2	16.6	Apr 13	89	77
Columbine	9170	24.6	21.5	24.6	Apr 05	114	100
Crosho	8960	10.6	10.8	12.6	Apr 05	98	84
Divide Peak	8700	15.8	18.4	21.4	Apr 15	86	74
Dry Lake	8240	21.8	19.0	22.3	Apr 04	115	98
Elk River	8710	14.8	17.5	19.4	Apr 05	85	76
Elkhead Divide	8780	14.7	N/A	N/A	N/A	*	*
Little Snake River	8930	23.0	25.0₍₁₆₎	29.0₍₁₆₎	Apr 09₍₁₆₎	92	79
Lost Dog	9340	19.2	22.1₍₂₂₎	24.5₍₂₂₎	Apr 10₍₂₂₎	87	78
Lynx Pass	8910	8.6	10.4	11.5	Apr 04	83	75
Old Battle	9850	26.7	28.2	38.8	May 05	95	69
Rabbit Ears	9390	23.5	24.1	27.9	Apr 21	98	84
Ripple Creek	10340	22.0	25.0	29.3	Apr 25	88	75
Sage Creek Basin	7830	9.6	12.5₍₁₉₎	14.8₍₁₉₎	Apr 03₍₁₉₎	77	65
Sandstone RS	8150	11.6	12.4	14.2	Apr 05	94	82
Tower	10610	40.9	40.6	49.0	May 07	101	83
Trapper Lake	9750	7.3	N/A	N/A	N/A	*	*
Whiskey Park	8950	25.7	25.3	30.8	Apr 17	102	83
Basin Index (%)		94
ARKANSAS RIVER BASIN
Apishapa	10000	0.3	4.1	7.6	Mar 16	7	4
Brumley	10570	9.8	10.0	11.8	Apr 19	98	83
Fremont Pass	11310	16.7	15.2	20.8	May 11	110	80
Glen Cove	11410	5.4	4.0₍₁₆₎	5.7₍₁₆₎	Apr 23₍₁₆₎	135	95
Hayden Pass	10700	6.5	13.5₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	48	40
Medano Pass	9650	0.3	2.4₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	12	4
Porphyry Creek	10790	16.1	14.7	17.0	Apr 15	110	95
Saint Elmo	10420	8.9	10.4₍₁₃₎	11.5₍₁₃₎	Apr 09₍₁₃₎	86	77
South Colony	10790	9.8	17.4₍₂₉₎	20.9₍₂₉₎	Apr 23₍₂₉₎	56	47
Ute Creek	10730	-M	11.7₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	*	*
Whiskey Ck	10260	4.0	10.2	11.1	Apr 01	39	36
Basin Index (%)		76
UPPER RIO GRANDE BASIN
Beartown	11600	17.4	19.8	23.2	Apr 17	88	75
Cochetopa Pass	10020	4.9	4.2₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	117	102
Culebra #2	10570	8.5	12.2	14.0	Apr 05	70	61
Cumbres Trestle	10030	13.5	23.4	26.2	Apr 06	58	52
Elwood Pass	11680	14.1	N/A	N/A	N/A	*	*
Grayback	11620	4.3	N/A	N/A	N/A	*	*
Hayden Pass	10700	6.5	13.5₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	48	40
Lily Pond	11060	5.9	11.5	14.8	Apr 04	51	40
Medano Pass	9650	0.3	2.4₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	12	4
Middle Creek	11260	11.3	17.0	19.2	Apr 15	66	59
Moon Pass	11110	5.3	5.8₍₁₂₎	6.8₍₁₂₎	Apr 08₍₁₂₎	91	78
North Costilla	10570	0.0	4.6	7.0	Mar 20	0	0
Rat Creek	11680	10.7	N/A	N/A	N/A	*	*
San Antonio Sink	9120	4.2	N/A	N/A	N/A	*	*
Sargents Mesa	11490	7.0	10.2₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	69	61
Shuree	10080	0.2	1.8₍₁₀₎	6.0₍₁₀₎	Mar 08₍₁₀₎	11	3
Slumgullion	11560	11.4	13.0	15.0	Apr 21	88	76
Trinchera	10850	8.7	10.0	11.2	Apr 05	87	78
Upper Rio Grande	9370	3.2	4.7	6.6	Mar 18	68	48
Ute Creek	10730	-M	11.7₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	*	*
Wager Gulch	11110	9.4	N/A	N/A	N/A	*	*
Wolf Creek Summit	10930	16.0	27.8	35.5	Apr 29	58	45
Basin Index (%)		66
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11600	17.4	19.8	23.2	Apr 17	88	75
Black Mesa	11580	16.6	N/A	N/A	N/A	*	*
Cascade	8900	-M	9.5	12.7	Mar 10	*	*
Cascade #2	8990	0.2	5.6	10.4	Mar 06	4	2
Columbine Pass	9160	10.5	15.2	18.0	Mar 26	69	58
Columbus Basin	10780	16.0	22.8₍₂₆₎	25.8₍₂₆₎	Apr 17₍₂₆₎	70	62
El Diente Peak	10210	-M	12.6	14.6	Apr 04	*	*
Elwood Pass	11680	14.1	N/A	N/A	N/A	*	*
Lizard Head Pass	10190	12.4	14.4	15.2	Apr 05	86	82
Lone Cone	9730	9.6	14.4	15.2	Apr 01	67	63
Mancos	10020	6.3	13.8₍₂₆₎	16.3₍₂₆₎	Mar 23₍₂₆₎	46	39
Mineral Creek	10030	11.0	14.1	15.6	Apr 09	78	71
Molas Lake	10610	13.1	18.0	22.0	Apr 11	73	60
Red Mountain Pass	11050	20.3	21.1	25.0	Apr 25	96	81
Scotch Creek	9160	6.9	10.3	12.0	Mar 18	67	58
Sharkstooth	10730	9.3	18.3₍₁₆₎	18.8₍₁₆₎	Apr 12₍₁₆₎	51	49
Spud Mountain	10660	13.6	21.8	25.6	Apr 04	62	53
Stump Lakes	11230	12.3	16.1	18.8	Apr 22	76	65
Upper San Juan	10140	11.5	26.1	29.7	Apr 09	44	39
Vallecito	10740	7.9	13.8	14.8	Apr 05	57	53
Weminuche Creek	10730	10.0	15.4₍₁₀₎	16.4₍₁₀₎	Mar 28₍₁₀₎	65	61
Wolf Creek Summit	10930	16.0	27.8	35.5	Apr 29	58	45
Basin Index (%)		66

-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.