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 Wednesday, December 31, 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	3.2	5.4	13.7	Apr 08	59	23
Castle Peak	11510	4.1	N/A	N/A	N/A	*	*
Cochetopa Pass	10020	2.1	2.0₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	105	44
Columbine Pass	9160	2.9	6.7	18.0	Mar 26	43	16
Idarado	9780	2.1	5.4	14.4	Apr 06	39	15
Mc Clure Pass	8760	2.6	6.4	16.6	Apr 04	41	16
Mesa Lakes	10160	2.6	6.2	19.0	Apr 15	42	14
Overland Res.	9890	1.9	5.2	12.4	Apr 05	37	15
Park Cone	9600	2.1	4.0	10.4	Apr 09	52	20
Park Reservoir	9990	4.8	9.5	27.4	Apr 26	51	18
Porphyry Creek	10790	4.4	6.2	17.0	Apr 15	71	26
Rat Creek	11680	4.3	N/A	N/A	N/A	*	*
Red Mountain Pass	11060	4.3	9.5	25.0	Apr 25	45	17
Sargents Mesa	11490	3.1	4.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	78	27
Schofield Pass	10640	6.7	12.8	35.1	Apr 19	52	19
Slumgullion	11560	3.9	6.3	15.0	Apr 21	62	26
Upper Taylor	10710	3.4	5.3₍₁₁₎	13.6₍₁₁₎	Apr 03₍₁₁₎	64	25
Wager Gulch	11110	2.6	N/A	N/A	N/A	*	*
Basin Index (%)		53
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10960	6.0	9.8₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	61	24
Bear River	9100	2.1	4.6₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	46	18
Beaver Ck Village	8530	1.8	4.7₍₁₇₎	11.7₍₁₇₎	Apr 02₍₁₇₎	38	15
Berthoud Summit	11300	4.6	7.3	23.2	May 03	63	20
Bison Lake	10950	4.0	10.6	26.9	Apr 29	38	15
Buffalo Park	9240	3.4	5.6₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	61	23
Castle Peak	11510	4.1	N/A	N/A	N/A	*	*
Chapman Tunnel	10090	3.2	6.9₍₁₃₎	15.4₍₁₃₎	Apr 19₍₁₃₎	46	21
Columbine	9170	7.3	8.6	24.6	Apr 05	85	30
Copper Mountain	10500	2.8	6.2	17.4	Apr 26	45	16
Elliot Ridge	10550	4.1	7.4₍₁₁₎	23.2₍₁₁₎	Apr 25₍₁₁₎	55	18
Fool Creek	11130	5.4	N/A	N/A	N/A	*	*
Fremont Pass	11310	2.8	6.8	20.8	May 11	41	13
Grizzly Peak	11110	3.8	6.9	19.6	Apr 21	55	19
High Lonesome	10630	4.2	N/A	N/A	N/A	*	*
Hoosier Pass	11600	2.9	6.4	17.3	Apr 27	45	17
Independence Pass	10570	2.7	7.0	17.4	Apr 18	39	16
Ivanhoe	10540	4.2	5.9₍₂₉₎	17.2₍₂₉₎	Apr 26₍₂₉₎	71	24
Jones Pass	10430	3.2	5.9₍₂₁₎	16.8₍₂₁₎	Apr 27₍₂₁₎	54	19
Kiln	9610	2.6	4.8	13.2	Apr 07	54	20
Lake Irene	10680	5.4	9.0	25.4	Apr 26	60	21
Lynx Pass	8910	2.1	4.4	11.5	Apr 04	48	18
Mc Clure Pass	8760	2.6	6.4	16.6	Apr 04	41	16
Mccoy Park	9500	1.3	5.6₍₁₈₎	14.6₍₁₈₎	Apr 07₍₁₈₎	23	9
Mesa Lakes	10160	2.6	6.2	19.0	Apr 15	42	14
Middle Fork Camp	8960	2.2	4.5₍₁₉₎	11.5₍₁₉₎	Apr 04₍₁₉₎	49	19
Nast Lake	8710	2.3	2.9	8.8	Mar 28	79	26
North Lost Trail	9190	3.5	6.0	17.4	Apr 04	58	20
Overland Res.	9890	1.9	5.2	12.4	Apr 05	37	15
Park Reservoir	9990	4.8	9.5	27.4	Apr 26	51	18
Phantom Valley	9030	2.2	4.1	10.4	Mar 30	54	21
Schofield Pass	10640	6.7	12.8	35.1	Apr 19	52	19
Stillwater Creek	8760	1.3	N/A	N/A	N/A	*	*
Summit Ranch	9350	2.5	4.5	11.4	Apr 09	56	22
Vail Mountain	10290	3.2	7.4	20.8	Apr 27	43	15
Willow Creek Pass	9520	2.4	5.8	16.4	May 03	41	15
Basin Index (%)		51
SOUTH PLATTE RIVER BASIN
Bear Lake	9490	4.6	5.8	19.8	Apr 27	79	23
Berthoud Summit	11300	4.6	7.3	23.2	May 03	63	20
Black Mountain	8940	2.7	4.8₍₁₀₎	12.5₍₁₀₎	Apr 17₍₁₀₎	56	22
Buckskin Joe	11160	1.5	3.9₍₂₁₎	12.6₍₂₁₎	May 02₍₂₁₎	38	12
Copeland Lake	8570	0.5	2.4	6.0	Mar 08	21	8
Deadman Hill	10240	6.1	7.7	21.8	May 04	79	28
Echo Lake	10660	0.8	2.4₍₂₂₎	9.0₍₂₂₎	Apr 29₍₂₂₎	33	9
Hoosier Pass	11600	2.9	6.4	17.3	Apr 27	45	17
Hourglass Lake	9380	3.8	4.4₍₁₂₎	13.0₍₁₂₎	Apr 19₍₁₂₎	86	29
Jackwhacker Gulch	11030	2.6	5.0₍₂₂₎	14.4₍₂₂₎	Apr 25₍₂₂₎	52	18
Joe Wright	10140	4.5	8.2	24.0	May 05	55	19
Lake Eldora	9700	2.6	5.0	14.0	Apr 09	52	19
Lake Irene	10680	5.4	9.0	25.4	Apr 26	60	21
Long Draw Resv	9980	6.9	7.4₍₁₁₎	18.3₍₁₁₎	Apr 27₍₁₁₎	93	38
Loveland Basin	11410	4.6	7.6₍₂₈₎	24.4₍₂₈₎	May 02₍₂₈₎	61	19
Michigan Creek	10700	2.2	4.4₍₂₂₎	13.2₍₂₂₎	Apr 26₍₂₂₎	50	17
Niwot	9940	2.8	4.8	15.0	Apr 19	58	19
Rough And Tumble	10420	1.2	2.6₍₂₂₎	8.3₍₂₂₎	Apr 24₍₂₂₎	46	14
Sawtooth	9640	5.9	N/A	N/A	N/A	*	*
University Camp	10330	3.6	5.7	19.9	May 07	63	18
Wild Basin	9410	-M	6.3₍₁₅₎	18.6₍₁₅₎	Apr 25₍₁₅₎	*	*
Willow Park	10710	5.2	6.6	21.0	Apr 29	79	25
Basin Index (%)		62
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10960	6.0	9.8₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	61	24
Blackhall Mtn	9830	8.5	12.2₍₁₁₎	34.6₍₁₁₎	Apr 27₍₁₁₎	70	25
Columbine	9170	7.3	8.6	24.6	Apr 05	85	30
Deadman Hill	10240	6.1	7.7	21.8	May 04	79	28
Joe Wright	10140	4.5	8.2	24.0	May 05	55	19
Never Summer	10300	5.5	8.4₍₁₈₎	23.8₍₁₈₎	May 11₍₁₈₎	65	23
Rawah	9100	2.6	4.8₍₁₈₎	12.2₍₁₈₎	Apr 07₍₁₈₎	54	21
Roach	9710	4.2	6.6	17.5	Apr 25	64	24
Tower	10610	12.8	16.6	49.0	May 07	77	26
Whiskey Park	8950	9.3	9.8	30.8	Apr 17	95	30
Willow Creek Pass	9520	2.4	5.8	16.4	May 03	41	15
Zirkel	9320	10.0	10.6₍₁₈₎	28.5₍₁₈₎	Apr 07₍₁₈₎	94	35
Basin Index (%)		73
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7460	1.4	4.2	12.6	Mar 27	33	11
Bear River	9100	2.1	4.6₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	46	18
Bison Lake	10950	4.0	10.6	26.9	Apr 29	38	15
Buffalo Park	9240	3.4	5.6₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	61	23
Burro Mountain	9290	2.7	5.8	16.6	Apr 13	47	16
Columbine	9170	7.3	8.6	24.6	Apr 05	85	30
Crosho	8960	2.5	4.9	12.6	Apr 05	51	20
Divide Peak	8700	4.0	7.6	21.4	Apr 15	53	19
Dry Lake	8240	5.6	8.3	22.3	Apr 04	67	25
Elk River	8710	5.4	6.5	19.4	Apr 05	83	28
Elkhead Divide	8780	4.1	N/A	N/A	N/A	*	*
Little Snake River	8930	8.5	10.0₍₁₆₎	29.0₍₁₆₎	Apr 09₍₁₆₎	85	29
Lost Dog	9350	6.9	8.6₍₂₂₎	24.5₍₂₂₎	Apr 10₍₂₂₎	80	28
Lynx Pass	8910	2.1	4.4	11.5	Apr 04	48	18
Old Battle	9840	10.4	12.2	38.8	May 05	85	27
Rabbit Ears	9390	5.0	9.6	27.9	Apr 21	52	18
Ripple Creek	10340	5.0	10.2	29.3	Apr 25	49	17
Sage Creek Basin	7830	2.4	5.3₍₁₉₎	14.8₍₁₉₎	Apr 03₍₁₉₎	45	16
Sandstone RS	8150	3.6	4.9	14.2	Apr 05	73	25
Tower	10610	12.8	16.6	49.0	May 07	77	26
Trapper Lake	9750	3.4	N/A	N/A	N/A	*	*
Whiskey Park	8950	9.3	9.8	30.8	Apr 17	95	30
Basin Index (%)		66
ARKANSAS RIVER BASIN
Apishapa	10000	0.0	2.8	7.6	Mar 16	0	0
Brumley	10570	2.0	4.1	11.8	Apr 19	49	17
Fremont Pass	11310	2.8	6.8	20.8	May 11	41	13
Glen Cove	11410	1.0	1.2₍₁₆₎	5.7₍₁₆₎	Apr 23₍₁₆₎	83	18
Hayden Pass	10700	3.7	6.1₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	61	23
Medano Pass	9650	1.6	2.7₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	59	22
Porphyry Creek	10790	4.4	6.2	17.0	Apr 15	71	26
Saint Elmo	10420	1.8	4.7₍₁₃₎	11.5₍₁₃₎	Apr 09₍₁₃₎	38	16
South Colony	10790	4.3	7.5₍₂₉₎	20.9₍₂₉₎	Apr 23₍₂₉₎	57	21
Ute Creek	10720	1.2	5.2₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	23	10
Whiskey Ck	10260	1.5	4.5	11.1	Apr 01	33	14
Basin Index (%)		47
UPPER RIO GRANDE BASIN
Beartown	11580	4.5	9.5	23.2	Apr 17	47	19
Cochetopa Pass	10020	2.1	2.0₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	105	44
Culebra #2	10560	3.1	5.8	14.0	Apr 05	53	22
Cumbres Trestle	10030	5.6	10.1	26.2	Apr 06	55	21
Elwood Pass	11680	6.1	N/A	N/A	N/A	*	*
Grayback	11620	2.8	N/A	N/A	N/A	*	*
Hayden Pass	10700	3.7	6.1₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	61	23
Lily Pond	11070	3.4	6.0	14.8	Apr 04	57	23
Medano Pass	9650	1.6	2.7₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	59	22
Middle Creek	11260	4.3	8.8	19.2	Apr 15	49	22
Moon Pass	11110	1.9	2.9₍₁₂₎	6.8₍₁₂₎	Apr 08₍₁₂₎	66	28
North Costilla	10570	0.0	3.2	7.0	Mar 20	0	0
Rat Creek	11680	4.3	N/A	N/A	N/A	*	*
San Antonio Sink	9120	1.9	N/A	N/A	N/A	*	*
Sargents Mesa	11490	3.1	4.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	78	27
Shuree	10070	1.4	2.6₍₁₀₎	6.0₍₁₀₎	Mar 08₍₁₀₎	54	23
Slumgullion	11560	3.9	6.3	15.0	Apr 21	62	26
Trinchera	10860	2.3	5.0	11.2	Apr 05	46	21
Upper Rio Grande	9370	1.8	2.8	6.6	Mar 18	64	27
Ute Creek	10720	1.2	5.2₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	23	10
Wager Gulch	11110	2.6	N/A	N/A	N/A	*	*
Wolf Creek Summit	10930	7.0	14.5	35.5	Apr 29	48	20
Basin Index (%)		52
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11580	4.5	9.5	23.2	Apr 17	47	19
Black Mesa	11580	4.7	N/A	N/A	N/A	*	*
Cascade	8900	-M	4.2	12.7	Mar 10	*	*
Cascade #2	8990	0.7	4.2	10.4	Mar 06	17	7
Columbine Pass	9160	2.9	6.7	18.0	Mar 26	43	16
Columbus Basin	10780	4.9	9.8₍₂₆₎	25.8₍₂₆₎	Apr 17₍₂₆₎	50	19
El Diente Peak	10210	2.8	5.1	14.6	Apr 04	55	19
Elwood Pass	11680	6.1	N/A	N/A	N/A	*	*
Lizard Head Pass	10190	3.9	6.3	15.2	Apr 05	62	26
Lone Cone	9730	3.1	6.4	15.2	Apr 01	48	20
Mancos	10020	2.6	5.6₍₂₆₎	16.3₍₂₆₎	Mar 23₍₂₆₎	46	16
Mineral Creek	10030	2.5	6.0	15.6	Apr 09	42	16
Molas Lake	10610	3.7	7.8	22.0	Apr 11	47	17
Red Mountain Pass	11060	4.3	9.5	25.0	Apr 25	45	17
Scotch Creek	9160	2.7	4.2	12.0	Mar 18	64	22
Sharkstooth	10730	3.6	7.4₍₁₆₎	18.8₍₁₆₎	Apr 12₍₁₆₎	49	19
Spud Mountain	10660	-M	10.4	25.6	Apr 04	*	*
Stump Lakes	11230	4.1	7.6	18.8	Apr 22	54	22
Upper San Juan	10140	5.8	11.9	29.7	Apr 09	49	20
Vallecito	10740	3.6	6.2	14.8	Apr 05	58	24
Weminuche Creek	10730	4.4	7.6₍₁₀₎	16.4₍₁₀₎	Mar 28₍₁₀₎	58	27
Wolf Creek Summit	10930	7.0	14.5	35.5	Apr 29	48	20
Basin Index (%)		49

-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.