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 Tuesday, March 18, 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	13.0	11.6	13.7	Apr 08	112	95
Castle Peak	11500	21.7	N/A	N/A	N/A	*	*
Cochetopa Pass	10020	5.0	4.2₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	119	104
Columbine Pass	9160	13.7	16.2	18.0	Mar 26	85	76
Idarado	9780	12.1	11.4	14.4	Apr 06	106	84
Mc Clure Pass	8760	12.2	14.9	16.6	Apr 04	82	73
Mesa Lakes	10160	12.0	14.7	19.0	Apr 15	82	63
Overland Res.	9890	7.5	10.8	12.4	Apr 05	69	60
Park Cone	9600	8.4	9.0	10.4	Apr 09	93	81
Park Reservoir	9990	15.6	22.0	27.4	Apr 26	71	57
Porphyry Creek	10790	16.2	13.6	17.0	Apr 15	119	95
Rat Creek	11680	11.1	N/A	N/A	N/A	*	*
Red Mountain Pass	11050	19.0	19.3	25.0	Apr 25	98	76
Sargents Mesa	11490	7.1	10.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	71	62
Schofield Pass	10640	24.3	26.4	35.1	Apr 19	92	69
Slumgullion	11560	11.2	12.0	15.0	Apr 21	93	75
Upper Taylor	10710	12.2	11.4₍₁₁₎	13.6₍₁₁₎	Apr 03₍₁₁₎	107	90
Wager Gulch	11110	10.2	N/A	N/A	N/A	*	*
Basin Index (%)		91
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10960	19.0	19.2₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	99	75
Bear River	9100	8.6	9.4₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	91	72
Beaver Ck Village	8530	11.1	10.1₍₁₇₎	11.7₍₁₇₎	Apr 02₍₁₇₎	110	95
Berthoud Summit	11300	19.0	16.0	23.2	May 03	119	82
Bison Lake	10950	17.5	20.8	26.9	Apr 29	84	65
Buffalo Park	9240	12.0	12.7₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	94	81
Castle Peak	11500	21.7	N/A	N/A	N/A	*	*
Chapman Tunnel	10090	12.1	13.3₍₁₃₎	15.4₍₁₃₎	Apr 19₍₁₃₎	91	79
Columbine	9170	24.2	20.8	24.6	Apr 05	116	98
Copper Mountain	10500	15.3	13.3	17.4	Apr 26	115	88
Elliot Ridge	10550	20.4	15.8₍₁₁₎	23.2₍₁₁₎	Apr 25₍₁₁₎	129	88
Fool Creek	11130	19.2	N/A	N/A	N/A	*	*
Fremont Pass	11310	15.4	13.9	20.8	May 11	111	74
Grizzly Peak	11110	17.4	15.3	19.6	Apr 21	114	89
High Lonesome	10630	18.2	N/A	N/A	N/A	*	*
Hoosier Pass	11600	12.7	13.4	17.3	Apr 27	95	73
Independence Pass	10570	14.4	14.2	17.4	Apr 18	101	83
Ivanhoe	10540	14.7	12.4₍₂₉₎	17.2₍₂₉₎	Apr 26₍₂₉₎	119	85
Jones Pass	10420	15.7	12.9₍₂₁₎	16.8₍₂₁₎	Apr 27₍₂₁₎	122	93
Kiln	9610	11.1	11.0	13.2	Apr 07	101	84
Lake Irene	10680	20.8	21.8	25.4	Apr 26	95	82
Lynx Pass	8910	10.1	10.0	11.5	Apr 04	101	88
Mc Clure Pass	8760	12.2	14.9	16.6	Apr 04	82	73
Mccoy Park	9500	13.2	12.3₍₁₈₎	14.6₍₁₈₎	Apr 07₍₁₈₎	107	90
Mesa Lakes	10160	12.0	14.7	19.0	Apr 15	82	63
Middle Fork Camp	8960	11.5	10.5₍₁₉₎	11.5₍₁₉₎	Apr 04₍₁₉₎	110	100
Nast Lake	8710	8.9	7.4	8.8	Mar 28	120	101
North Lost Trail	9190	14.6	15.0	17.4	Apr 04	97	84
Overland Res.	9890	7.5	10.8	12.4	Apr 05	69	60
Park Reservoir	9990	15.6	22.0	27.4	Apr 26	71	57
Phantom Valley	9030	9.8	9.0	10.4	Mar 30	109	94
Schofield Pass	10640	24.3	26.4	35.1	Apr 19	92	69
Stillwater Creek	8760	7.8	N/A	N/A	N/A	*	*
Summit Ranch	9350	11.7	10.1	11.4	Apr 09	116	103
Vail Mountain	10290	15.7	16.9	20.8	Apr 27	93	75
Willow Creek Pass	9520	11.6	11.2	16.4	May 03	104	71
Basin Index (%)		101
SOUTH PLATTE RIVER BASIN
Bear Lake	9490	16.7	15.3	19.8	Apr 27	109	84
Berthoud Summit	11300	19.0	16.0	23.2	May 03	119	82
Black Mountain	8950	8.8	9.6₍₁₀₎	12.5₍₁₀₎	Apr 17₍₁₀₎	92	70
Buckskin Joe	11160	7.3	8.6₍₂₁₎	12.6₍₂₁₎	May 02₍₂₁₎	85	58
Copeland Lake	8570	0.6	3.4	6.0	Mar 08	18	10
Deadman Hill	10240	15.7	14.6	21.8	May 04	108	72
Echo Lake	10660	6.4	5.7₍₂₂₎	9.0₍₂₂₎	Apr 29₍₂₂₎	112	71
Hoosier Pass	11600	12.7	13.4	17.3	Apr 27	95	73
Hourglass Lake	9380	12.2	10.6₍₁₂₎	13.0₍₁₂₎	Apr 19₍₁₂₎	115	94
Jackwhacker Gulch	11030	10.3	10.5₍₂₂₎	14.4₍₂₂₎	Apr 25₍₂₂₎	98	72
Joe Wright	10140	20.3	18.2	24.0	May 05	112	85
Lake Eldora	9700	11.8	11.6	14.0	Apr 09	102	84
Lake Irene	10680	20.8	21.8	25.4	Apr 26	95	82
Long Draw Resv	9990	15.0	15.2₍₁₁₎	18.3₍₁₁₎	Apr 27₍₁₁₎	99	82
Loveland Basin	11410	16.5	16.3₍₂₈₎	24.4₍₂₈₎	May 02₍₂₈₎	101	68
Michigan Creek	10700	8.6	9.1₍₂₂₎	13.2₍₂₂₎	Apr 26₍₂₂₎	95	65
Niwot	9940	11.6	10.6	15.0	Apr 19	109	77
Rough And Tumble	10420	4.9	5.4₍₂₂₎	8.3₍₂₂₎	Apr 24₍₂₂₎	91	59
Sawtooth	9640	23.1	N/A	N/A	N/A	*	*
University Camp	10330	13.5	13.5	19.9	May 07	100	68
Wild Basin	9410	13.3	13.7₍₁₅₎	18.6₍₁₅₎	Apr 25₍₁₅₎	97	72
Willow Park	10710	16.2	14.6	21.0	Apr 29	111	77
Basin Index (%)		102
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10960	19.0	19.2₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	99	75
Blackhall Mtn	9830	25.8	26.4₍₁₁₎	34.6₍₁₁₎	Apr 27₍₁₁₎	98	75
Columbine	9170	24.2	20.8	24.6	Apr 05	116	98
Deadman Hill	10240	15.7	14.6	21.8	May 04	108	72
Joe Wright	10140	20.3	18.2	24.0	May 05	112	85
Never Summer	10300	17.0	17.6₍₁₈₎	23.8₍₁₈₎	May 11₍₁₈₎	97	71
Rawah	9100	10.3	9.6₍₁₈₎	12.2₍₁₈₎	Apr 07₍₁₈₎	107	84
Roach	9710	12.5	13.6	17.5	Apr 25	92	71
Tower	10610	38.8	38.4	49.0	May 07	101	79
Whiskey Park	8950	24.4	24.3	30.8	Apr 17	100	79
Willow Creek Pass	9520	11.6	11.2	16.4	May 03	104	71
Zirkel	9320	23.6	26.0₍₁₈₎	28.5₍₁₈₎	Apr 07₍₁₈₎	91	83
Basin Index (%)		101
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7460	10.1	11.1	12.6	Mar 27	91	80
Bear River	9100	8.6	9.4₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	91	72
Bison Lake	10950	17.5	20.8	26.9	Apr 29	84	65
Buffalo Park	9240	12.0	12.7₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	94	81
Burro Mountain	9290	13.0	13.5	16.6	Apr 13	96	78
Columbine	9170	24.2	20.8	24.6	Apr 05	116	98
Crosho	8960	11.3	10.8	12.6	Apr 05	105	90
Divide Peak	8700	15.6	17.0	21.4	Apr 15	92	73
Dry Lake	8240	21.0	18.3	22.3	Apr 04	115	94
Elk River	8710	15.0	16.6	19.4	Apr 05	90	77
Elkhead Divide	8780	15.2	N/A	N/A	N/A	*	*
Little Snake River	8930	22.5	23.9₍₁₆₎	29.0₍₁₆₎	Apr 09₍₁₆₎	94	78
Lost Dog	9340	19.8	21.2₍₂₂₎	24.5₍₂₂₎	Apr 10₍₂₂₎	93	81
Lynx Pass	8910	10.1	10.0	11.5	Apr 04	101	88
Old Battle	9850	25.0	26.0	38.8	May 05	96	64
Rabbit Ears	9390	22.7	22.2	27.9	Apr 21	102	81
Ripple Creek	10340	21.1	22.6	29.3	Apr 25	93	72
Sage Creek Basin	7830	11.1	12.0₍₁₉₎	14.8₍₁₉₎	Apr 03₍₁₉₎	92	75
Sandstone RS	8150	12.9	11.4	14.2	Apr 05	113	91
Tower	10610	38.8	38.4	49.0	May 07	101	79
Trapper Lake	9750	7.2	N/A	N/A	N/A	*	*
Whiskey Park	8950	24.4	24.3	30.8	Apr 17	100	79
Basin Index (%)		98
ARKANSAS RIVER BASIN
Apishapa	10000	0.4	5.2	7.6	Mar 16	8	5
Brumley	10570	9.8	9.1	11.8	Apr 19	108	83
Fremont Pass	11310	15.4	13.9	20.8	May 11	111	74
Glen Cove	11410	4.9	3.4₍₁₆₎	5.7₍₁₆₎	Apr 23₍₁₆₎	144	86
Hayden Pass	10700	7.9	13.2₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	60	48
Medano Pass	9650	0.3	5.1₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	6	4
Porphyry Creek	10790	16.2	13.6	17.0	Apr 15	119	95
Saint Elmo	10420	9.1	9.5₍₁₃₎	11.5₍₁₃₎	Apr 09₍₁₃₎	96	79
South Colony	10790	10.5	15.4₍₂₉₎	20.9₍₂₉₎	Apr 23₍₂₉₎	68	50
Ute Creek	10730	4.8	11.5₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	42	39
Whiskey Ck	10260	4.5	9.5	11.1	Apr 01	47	41
Basin Index (%)		77
UPPER RIO GRANDE BASIN
Beartown	11600	16.7	18.8	23.2	Apr 17	89	72
Cochetopa Pass	10020	5.0	4.2₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	119	104
Culebra #2	10570	9.6	11.8	14.0	Apr 05	81	69
Cumbres Trestle	10030	14.7	23.0	26.2	Apr 06	64	56
Elwood Pass	11680	14.9	N/A	N/A	N/A	*	*
Grayback	11620	4.2	N/A	N/A	N/A	*	*
Hayden Pass	10700	7.9	13.2₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	60	48
Lily Pond	11060	6.6	11.6	14.8	Apr 04	57	45
Medano Pass	9650	0.3	5.1₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	6	4
Middle Creek	11260	11.9	15.8	19.2	Apr 15	75	62
Moon Pass	11110	6.1	5.6₍₁₂₎	6.8₍₁₂₎	Apr 08₍₁₂₎	109	90
North Costilla	10570	0.3	5.4	7.0	Mar 20	6	4
Rat Creek	11680	11.1	N/A	N/A	N/A	*	*
San Antonio Sink	9120	6.4	N/A	N/A	N/A	*	*
Sargents Mesa	11490	7.1	10.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	71	62
Shuree	10080	1.7	4.6₍₁₀₎	6.0₍₁₀₎	Mar 08₍₁₀₎	37	28
Slumgullion	11560	11.2	12.0	15.0	Apr 21	93	75
Trinchera	10850	9.4	9.8	11.2	Apr 05	96	84
Upper Rio Grande	9370	5.1	5.6	6.6	Mar 18	91	77
Ute Creek	10730	4.8	11.5₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	42	39
Wager Gulch	11110	10.2	N/A	N/A	N/A	*	*
Wolf Creek Summit	10930	18.2	25.2	35.5	Apr 29	72	51
Basin Index (%)		71
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11600	16.7	18.8	23.2	Apr 17	89	72
Black Mesa	11580	16.2	N/A	N/A	N/A	*	*
Cascade	8900	-M	10.2	12.7	Mar 10	*	*
Cascade #2	8990	0.8	7.8	10.4	Mar 06	10	8
Columbine Pass	9160	13.7	16.2	18.0	Mar 26	85	76
Columbus Basin	10780	15.5	21.8₍₂₆₎	25.8₍₂₆₎	Apr 17₍₂₆₎	71	60
El Diente Peak	10210	-M	11.8	14.6	Apr 04	*	*
Elwood Pass	11680	14.9	N/A	N/A	N/A	*	*
Lizard Head Pass	10190	11.8	13.6	15.2	Apr 05	87	78
Lone Cone	9730	11.2	14.2	15.2	Apr 01	79	74
Mancos	10020	9.0	13.9₍₂₆₎	16.3₍₂₆₎	Mar 23₍₂₆₎	65	55
Mineral Creek	10030	11.6	12.8	15.6	Apr 09	91	74
Molas Lake	10610	13.3	17.2	22.0	Apr 11	77	60
Red Mountain Pass	11050	19.0	19.3	25.0	Apr 25	98	76
Scotch Creek	9160	8.7	10.8	12.0	Mar 18	81	72
Sharkstooth	10730	11.3	16.6₍₁₆₎	18.8₍₁₆₎	Apr 12₍₁₆₎	68	60
Spud Mountain	10660	13.6	21.3	25.6	Apr 04	64	53
Stump Lakes	11230	12.7	15.0	18.8	Apr 22	85	68
Upper San Juan	10140	13.1	26.2	29.7	Apr 09	50	44
Vallecito	10740	9.0	13.6	14.8	Apr 05	66	61
Weminuche Creek	10730	11.2	15.2₍₁₀₎	16.4₍₁₀₎	Mar 28₍₁₀₎	74	68
Wolf Creek Summit	10930	18.2	25.2	35.5	Apr 29	72	51
Basin Index (%)		74

-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.