Colorado SNOTEL Precipitation Update Report

Colorado SNOTEL 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, August 31, 2026

Basin Site Name	Elev (ft)	Month-to-Date Precipitation			Water Year-to-Date Precipitation
Basin Site Name	Elev (ft)	Current (in)	Median (in)	Pct of Median	Current (in)	Median (in)	Pct of Median
GUNNISON RIVER BASIN
Butte	10190	0.9	1.6	56	16.7	23.8	70
Castle Peak	11510	1.0	N/A	*	31.0	N/A	*
Cochetopa Pass	10020	1.2	1.6₍₁₆₎	75	10.8	16.0₍₁₆₎	68
Columbine Pass	9160	1.1	1.6	69	25.6	30.8	83
Idarado	9780	2.2	2.6	85	24.8	29.4	84
Mc Clure Pass	8760	1.3	2.2	59	22.3	30.0	74
Mesa Lakes	10160	0.9	1.6	56	22.0	30.8	71
Overland Res.	9890	2.3	2.4	96	20.0	26.8	75
Park Cone	9600	1.3	1.6	81	15.4	18.0	86
Park Reservoir	9990	2.7	2.2	123	31.0	37.0	84
Porphyry Creek	10790	1.8	1.9	95	20.4	24.8	82
Rat Creek	11680	2.0	N/A	*	20.5	N/A	*
Red Mountain Pass	11060	2.2	2.8	79	30.0	39.8	75
Sargents Mesa	11490	1.3	1.9₍₁₂₎	68	16.2	22.0₍₁₂₎	74
Schofield Pass	10640	0.8	2.4	33	33.6	44.5	76
Slumgullion	11560	1.1	2.1	52	17.8	22.7	78
Upper Taylor	10710	0.8	1.8₍₁₁₎	44	19.1	28.8₍₁₁₎	66
Wager Gulch	11110	1.3	N/A	*	17.4	N/A	*
Basin Index (%)		72			77
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10960	1.8	1.6₍₁₈₎	112	26.2	34.8₍₁₈₎	75
Bear River	9100	2.0	2.0₍₁₆₎	100	17.3	22.4₍₁₆₎	77
Beaver Ck Village	8530	1.8	1.6₍₁₇₎	112	16.6	23.1₍₁₇₎	72
Berthoud Summit	11300	1.0	2.3	43	26.0	38.0	68
Bison Lake	10950	2.5	2.1	119	30.4	38.2	80
Buffalo Park	9240	2.2	1.0₍₂₅₎	220	16.4	23.8₍₂₅₎	69
Castle Peak	11510	1.0	N/A	*	31.0	N/A	*
Chapman Tunnel	10090	0.0	2.4₍₁₃₎	0	14.7	29.5₍₁₃₎	50
Columbine	9170	1.4	1.2	117	29.5	36.0	82
Copper Mountain	10500	1.3	2.4	54	17.0	28.0	61
Elliot Ridge	10550	1.4	N/A	*	19.9	N/A	*
Fool Creek	11130	1.6	N/A	*	21.7	N/A	*
Fremont Pass	11310	1.1	2.1	52	16.0	27.1	59
Grizzly Peak	11110	1.2	2.2	55	20.6	29.4	70
High Lonesome	10630	0.6	N/A	*	20.2	N/A	*
Hoosier Pass	11600	1.5	2.3	65	18.1	27.8	65
Independence Pass	10570	1.1	1.6	69	17.0	28.4	60
Ivanhoe	10540	1.4	1.9₍₂₉₎	74	19.3	33.8₍₂₉₎	57
Jones Pass	10430	1.5	2.0₍₂₁₎	75	24.3	32.2₍₂₁₎	75
Kiln	9610	0.7	1.6	44	12.2	22.4	54
Lake Irene	10680	1.8	2.0	90	27.1	33.2	82
Lynx Pass	8910	2.8	1.3	215	15.3	20.8	74
Mc Clure Pass	8760	1.3	2.2	59	22.3	30.0	74
Mccoy Park	9500	3.0	1.5₍₁₈₎	200	21.9	26.3₍₁₈₎	83
Mesa Lakes	10160	0.9	1.6	56	22.0	30.8	71
Middle Fork Camp	8960	1.3	1.7₍₁₉₎	76	16.0	24.3₍₁₉₎	66
Nast Lake	8710	1.4	1.4	100	11.8	19.5	61
North Lost Trail	9190	1.1	1.8	61	23.2	32.0	72
Overland Res.	9890	2.3	2.4	96	20.0	26.8	75
Park Reservoir	9990	2.7	2.2	123	31.0	37.0	84
Phantom Valley	9030	1.4	2.0	70	17.4	22.6	77
Schofield Pass	10640	0.8	2.4	33	33.6	44.5	76
Stillwater Creek	8760	1.1	1.4	79	12.7	17.4	73
Summit Ranch	9350	0.8	1.5	53	16.1	22.6	71
Vail Mountain	10290	2.2	1.6	138	20.3	33.0	62
Willow Creek Pass	9520	2.1	1.4	150	20.8	24.2	86
Basin Index (%)		84			71
SOUTH PLATTE RIVER BASIN
Bear Lake	9490	1.2	2.0	60	22.9	32.2	71
Berthoud Summit	11300	1.0	2.3	43	26.0	38.0	68
Black Mountain	8940	2.0	1.2₍₁₀₎	167	16.4	24.6₍₁₀₎	67
Buckskin Joe	11160	0.9	3.1₍₂₁₎	29	14.7	26.0₍₂₁₎	57
Copeland Lake	8570	1.3	2.0	65	18.4	25.6	72
Deadman Hill	10240	1.1	1.4	79	21.3	29.2	73
Echo Lake	10660	1.7	2.6₍₂₂₎	65	19.0	24.8₍₂₂₎	77
Hoosier Pass	11600	1.5	2.3	65	18.1	27.8	65
Hourglass Lake	9380	1.7	1.2₍₁₂₎	142	17.7	23.8₍₁₂₎	74
Jackwhacker Gulch	11030	2.2	2.4₍₂₂₎	92	26.3	28.6₍₂₂₎	92
Joe Wright	10140	2.2	2.0	110	32.7	41.0	80
Lake Eldora	9700	1.7	2.0	85	20.1	28.6	70
Lake Irene	10680	1.8	2.0	90	27.1	33.2	82
Long Draw Resv	9980	2.0	1.1₍₁₁₎	182	22.7	27.2₍₁₁₎	83
Loveland Basin	11410	0.8	2.4₍₂₈₎	33	22.6	31.2₍₂₈₎	72
Michigan Creek	10700	1.5	2.0₍₂₂₎	75	20.2	26.2₍₂₂₎	77
Niwot	9940	1.9	2.0	95	23.4	28.9	81
Rough And Tumble	10420	0.4	1.8₍₂₂₎	22	10.8	17.9₍₂₂₎	60
Sawtooth	9640	-M	N/A	*	-M	N/A	*
University Camp	10330	2.2	2.1	105	27.6	33.9	81
Wild Basin	9410	1.5	1.5₍₁₅₎	100	22.3	28.4₍₁₅₎	79
Willow Park	10710	1.7	2.1	81	31.1	35.0	89
Basin Index (%)		78			75
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10960	1.8	1.6₍₁₈₎	112	26.2	34.8₍₁₈₎	75
Blackhall Mtn	9830	1.2	1.4₍₁₁₎	86	31.9	42.2₍₁₁₎	76
Columbine	9170	1.4	1.2	117	29.5	36.0	82
Deadman Hill	10240	1.1	1.4	79	21.3	29.2	73
Joe Wright	10140	2.2	2.0	110	32.7	41.0	80
Never Summer	10300	2.1	2.2₍₁₈₎	95	22.6	30.0₍₁₈₎	75
Rawah	9100	1.9	1.4₍₁₈₎	136	19.5	26.8₍₁₈₎	73
Roach	9710	1.7	1.2	142	22.7	31.2	73
Tower	10610	1.6	1.4	114	46.3	55.4	84
Whiskey Park	8950	1.8	1.2	150	34.4	39.4	87
Willow Creek Pass	9520	2.1	1.4	150	20.8	24.2	86
Zirkel	9320	1.5	1.9₍₁₈₎	79	36.3	41.4₍₁₈₎	88
Basin Index (%)		111			80
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7460	1.6	0.8	200	20.4	22.4	91
Bear River	9100	2.0	2.0₍₁₆₎	100	17.3	22.4₍₁₆₎	77
Bison Lake	10950	2.5	2.1	119	30.4	38.2	80
Buffalo Park	9240	2.2	1.0₍₂₅₎	220	16.4	23.8₍₂₅₎	69
Burro Mountain	9290	1.7	1.8	94	23.3	30.2	77
Columbine	9170	1.4	1.2	117	29.5	36.0	82
Crosho	8960	2.1	1.4	150	20.7	24.4	85
Divide Peak	8700	1.5	0.9	167	23.8	30.0	79
Dry Lake	8240	1.9	1.0	190	27.7	36.3	76
Elk River	8710	1.5	1.2	125	25.2	28.8	88
Elkhead Divide	8780	0.9	N/A	*	24.2	N/A	*
Little Snake River	8930	1.6	1.2₍₁₆₎	133	36.8	45.2₍₁₆₎	81
Lost Dog	9350	1.5	1.2₍₂₂₎	125	27.4	34.2₍₂₂₎	80
Lynx Pass	8910	2.8	1.3	215	15.3	20.8	74
Old Battle	9840	-0.5	1.3	-38	36.2	48.0	75
Rabbit Ears	9390	2.8	1.4	200	34.4	43.6	79
Ripple Creek	10340	1.9	0.9	211	26.0	36.7	71
Sage Creek Basin	7830	0.9	1.0₍₁₉₎	90	16.1	20.0₍₁₉₎	80
Sandstone RS	8150	1.3	1.3	100	20.8	25.8	81
Tower	10610	1.6	1.4	114	46.3	55.4	84
Trapper Lake	9750	1.8	1.3	138	21.0	30.5	69
Whiskey Park	8950	1.8	1.2	150	34.4	39.4	87
Basin Index (%)		133			79
ARKANSAS RIVER BASIN
Apishapa	10000	1.8	2.8	64	13.7	25.4	54
Brumley	10570	1.0	1.4	71	15.6	22.4	70
Fremont Pass	11310	1.1	2.1	52	16.0	27.1	59
Glen Cove	11410	5.5	3.4₍₁₆₎	162	21.8	26.8₍₁₆₎	81
Hayden Pass	10700	1.7	2.0₍₁₃₎	85	18.6	25.0₍₁₃₎	74
Medano Pass	9650	2.0	2.0₍₂₅₎	100	17.9	22.2₍₂₅₎	81
Porphyry Creek	10790	1.8	1.9	95	20.4	24.8	82
Saint Elmo	10420	1.6	2.3₍₁₃₎	70	16.3	23.5₍₁₃₎	69
South Colony	10790	1.4	4.3₍₂₉₎	33	26.2	39.9₍₂₉₎	66
Ute Creek	10720	0.8	2.6₍₂₀₎	31	15.9	28.4₍₂₀₎	56
Whiskey Ck	10260	0.9	4.0	22	12.9	31.3	41
Basin Index (%)		68			66
UPPER RIO GRANDE BASIN
Beartown	11580	2.2	2.9	76	35.2	34.6	102
Cochetopa Pass	10020	1.2	1.6₍₁₆₎	75	10.8	16.0₍₁₆₎	68
Culebra #2	10560	1.0	3.1	32	13.1	25.6	51
Cumbres Trestle	10030	0.8	2.8	29	26.1	35.7	73
Elwood Pass	11680	2.3	N/A	*	35.1	N/A	*
Grayback	11620	1.6	3.3₍₁₆₎	48	20.9	30.4₍₁₆₎	69
Hayden Pass	10700	1.7	2.0₍₁₃₎	85	18.6	25.0₍₁₃₎	74
Lily Pond	11070	1.5	2.4	62	21.1	29.4	72
Medano Pass	9650	2.0	2.0₍₂₅₎	100	17.9	22.2₍₂₅₎	81
Middle Creek	11260	2.2	3.1	71	32.3	34.0	95
Moon Pass	11110	1.2	1.6₍₁₂₎	75	12.6	17.6₍₁₂₎	72
North Costilla	10570	1.2	3.1	39	15.0	25.2	60
Rat Creek	11680	2.0	N/A	*	20.5	N/A	*
San Antonio Sink	9120	0.4	N/A	*	10.6	N/A	*
Sargents Mesa	11490	1.3	1.9₍₁₂₎	68	16.2	22.0₍₁₂₎	74
Shuree	10070	1.2	1.9₍₁₀₎	63	10.0	18.1₍₁₁₎	55
Slumgullion	11560	1.1	2.1	52	17.8	22.7	78
Trinchera	10860	0.8	2.0	40	10.4	21.2	49
Upper Rio Grande	9370	1.1	1.6	69	17.8	17.1	104
Ute Creek	10720	0.8	2.6₍₂₀₎	31	15.9	28.4₍₂₀₎	56
Wager Gulch	11110	1.3	N/A	*	17.4	N/A	*
Wolf Creek Summit	10930	0.9	2.6	35	36.7	44.8	82
Basin Index (%)		56			74
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11580	2.2	2.9	76	35.2	34.6	102
Black Mesa	11580	2.7	N/A	*	34.2	N/A	*
Cascade	8900	-M	3.1	*	-M	29.5	*
Cascade #2	8990	2.0	2.8	71	26.0	28.0	93
Columbine Pass	9160	1.1	1.6	69	25.6	30.8	83
Columbus Basin	10780	2.3	4.0₍₂₆₎	58	34.9	39.6₍₂₆₎	88
El Diente Peak	10210	1.3	2.1	62	27.1	29.4	92
Elwood Pass	11680	2.3	N/A	*	35.1	N/A	*
Lizard Head Pass	10190	1.0	2.6	38	21.7	26.1	83
Lone Cone	9730	1.6	2.4	67	27.2	29.8	91
Mancos	10020	2.4	3.2₍₂₆₎	75	21.4	28.4₍₂₆₎	75
Mineral Creek	10030	2.0	2.4	83	24.5	27.8	88
Molas Lake	10610	1.3	2.6	50	24.9	29.8	84
Red Mountain Pass	11060	2.2	2.8	79	30.0	39.8	75
Scotch Creek	9160	1.0	2.0	50	20.2	25.9	78
Sharkstooth	10730	2.3	2.8₍₁₆₎	82	27.5	35.7₍₁₆₎	77
Spud Mountain	10660	3.6	3.3	109	39.5	41.5	95
Stump Lakes	11230	1.6	4.4	36	29.8	31.2	96
Upper San Juan	10140	1.6	3.2	50	39.6	47.2	84
Vallecito	10740	2.5	3.0	83	28.2	28.2	100
Weminuche Creek	10730	1.4	3.6₍₁₀₎	39	32.3	33.0₍₁₀₎	98
Wolf Creek Summit	10930	0.9	2.6	35	36.7	44.8	82
Basin Index (%)		63			87

-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 MONTH-TO-DATE PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning on the 1st day of the current month) found at selected SNOTEL sites in or
near the basin compared to the Median (or Average) value for those sites on this day.

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.