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 Saturday, May 18, 2024

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	10200	5.0	2.5	13.7	Apr 08	200	36
Cochetopa Pass	10061	-M	0.0₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	*	*
Columbine Pass	9171	0.2	0.0	18.0	Mar 26	*	1*
Idarado	9812	0.2	0.0	14.4	Apr 06	*	1*
Mc Clure Pass	8774	0.2	0.0	16.6	Apr 04	*	1*
Mesa Lakes	10168	3.2	8.0	19.0	Apr 15	40	17
Overland Res.	9893	0.1	0.0	12.4	Apr 05	*	1*
Park Cone	9621	2.4	0.0	10.4	Apr 09	*	23*
Park Reservoir	9987	15.1	20.6	27.4	Apr 26	73	55
Porphyry Creek	10788	14.4	6.2	17.0	Apr 15	232	85
Red Mountain Pass	11080	17.2	17.2	25.0	Apr 25	100	69
Sargents Mesa	11499	6.0	6.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	100	53
Schofield Pass	10653	23.6	24.7	35.1	Apr 19	96	67
Slumgullion	11560	0.9	5.9	15.0	Apr 21	15	6
Upper Taylor	10717	6.7	3.5₍₁₁₎	13.6₍₁₁₎	Apr 03₍₁₁₎	191	49
Wager Gulch	11132	0.1	N/A	N/A	N/A	*	*
Basin Index (%)		101
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10976	22.5	19.3₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	117	89
Bear River	9112	4.4	5.4₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	81	37
Beaver Ck Village	8565	0.0	0.0₍₁₇₎	11.7₍₁₇₎	Apr 02₍₁₇₎	*	0*
Berthoud Summit	11314	21.3	18.5	23.2	May 03	115	92
Bison Lake	10964	24.2	25.2	26.9	Apr 29	96	90
Buffalo Park	9249	8.6	6.9₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	125	58
Chapman Tunnel	10100	10.8	5.5₍₁₃₎	15.4₍₁₃₎	Apr 19₍₁₃₎	196	70
Columbine	9167	7.2	3.8	24.6	Apr 05	189	29
Copper Mountain	10523	13.6	9.8	17.4	Apr 26	139	78
Elliot Ridge	10549	23.8	14.1₍₁₁₎	23.2₍₁₁₎	Apr 25₍₁₁₎	169	103
Fool Creek	11156	21.6	N/A	N/A	N/A	*	*
Fremont Pass	11326	21.7	18.0	20.8	May 11	121	104
Grizzly Peak	11139	16.5	10.4	19.6	Apr 21	159	84
High Lonesome	10638	21.0	N/A	N/A	N/A	*	*
Hoosier Pass	11611	19.9	12.8	17.3	Apr 27	155	115
Independence Pass	10598	12.4	7.6	17.4	Apr 18	163	71
Ivanhoe	10541	19.2	10.6₍₂₉₎	17.2₍₂₉₎	Apr 26₍₂₉₎	181	112
Jones Pass	10426	8.3	12.5₍₂₁₎	16.8₍₂₁₎	Apr 27₍₂₁₎	66	49
Kiln	9624	0.3	0.0	13.2	Apr 07	*	2*
Lake Irene	10682	20.8	19.0	25.4	Apr 26	109	82
Lynx Pass	8919	0.2	0.0	11.5	Apr 04	*	2*
Mc Clure Pass	8774	0.2	0.0	16.6	Apr 04	*	1*
Mccoy Park	9516	1.2	0.2₍₁₈₎	14.6₍₁₈₎	Apr 07₍₁₈₎	600*	8*
Mesa Lakes	10168	3.2	8.0	19.0	Apr 15	40	17
Middle Fork Camp	8969	0.1	0.0₍₁₉₎	11.5₍₁₉₎	Apr 04₍₁₉₎	*	1*
Nast Lake	8731	0.0	0.0	8.8	Mar 28	*	0*
North Lost Trail	9219	0.3	0.3	17.4	Apr 04	100*	2*
Overland Res.	9893	0.1	0.0	12.4	Apr 05	*	1*
Park Reservoir	9987	15.1	20.6	27.4	Apr 26	73	55
Phantom Valley	9045	2.6	0.0	10.4	Mar 30	*	25*
Schofield Pass	10653	23.6	24.7	35.1	Apr 19	96	67
Stillwater Creek	8880	0.0	N/A	N/A	N/A	*	*
Summit Ranch	9371	-M	0.0	11.4	Apr 09	*	*
Vail Mountain	10310	12.0	13.4	20.8	Apr 27	90	58
Willow Creek Pass	9523	12.7	11.0	16.4	May 03	115	77
Basin Index (%)		118
SOUTH PLATTE RIVER BASIN
Bear Lake	9522	18.0	12.7	19.8	Apr 27	142	91
Berthoud Summit	11314	21.3	18.5	23.2	May 03	115	92
Black Mountain	8980	1.7	0.6₍₁₀₎	12.5₍₁₀₎	Apr 17₍₁₀₎	283*	14*
Buckskin Joe	11166	15.2	9.5₍₂₁₎	12.6₍₂₁₎	May 02₍₂₁₎	160	121
Copeland Lake	8555	0.0	0.0	6.0	Mar 08	*	0*
Deadman Hill	10239	20.3	17.3	21.8	May 04	117	93
Echo Lake	10694	9.7	6.4₍₂₂₎	9.0₍₂₂₎	Apr 29₍₂₂₎	152	108
Hoosier Pass	11611	19.9	12.8	17.3	Apr 27	155	115
Hourglass Lake	9417	0.1	3.6₍₁₂₎	13.0₍₁₂₎	Apr 19₍₁₂₎	3	1
Jackwhacker Gulch	11054	8.7	8.3₍₂₂₎	14.4₍₂₂₎	Apr 25₍₂₂₎	105	60
Joe Wright	10158	21.0	20.2	24.0	May 05	104	88
Lake Eldora	9728	0.4	0.0	14.0	Apr 09	*	3*
Lake Irene	10682	20.8	19.0	25.4	Apr 26	109	82
Long Draw Resv	10008	11.7	12.9₍₁₁₎	18.3₍₁₁₎	Apr 27₍₁₁₎	91	64
Loveland Basin	11427	21.7	20.0₍₂₈₎	24.4₍₂₈₎	May 02₍₂₈₎	108	89
Michigan Creek	10702	11.1	8.6₍₂₂₎	13.2₍₂₂₎	Apr 26₍₂₂₎	129	84
Niwot	9979	10.3	8.2	15.0	Apr 19	126	69
Rough And Tumble	10432	4.8	1.3₍₂₂₎	8.3₍₂₂₎	Apr 24₍₂₂₎	369	58
Sawtooth	9676	26.1	N/A	N/A	N/A	*	*
University Camp	10360	19.7	17.2	19.9	May 07	115	99
Wild Basin	9439	17.3	10.8₍₁₅₎	18.6₍₁₅₎	Apr 25₍₁₅₎	160	93
Willow Park	10732	19.9	13.8	21.0	Apr 29	144	95
Basin Index (%)		123
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10976	22.5	19.3₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	117	89
Blackhall Mtn	9839	33.9	27.5₍₁₁₎	34.6₍₁₁₎	Apr 27₍₁₁₎	123	98
Columbine	9167	7.2	3.8	24.6	Apr 05	189	29
Deadman Hill	10239	20.3	17.3	21.8	May 04	117	93
Joe Wright	10158	21.0	20.2	24.0	May 05	104	88
Never Summer	10323	24.0	20.4₍₁₈₎	23.8₍₁₈₎	May 11₍₁₈₎	118	101
Rawah	9069	5.1	0.2₍₁₈₎	12.2₍₁₈₎	Apr 07₍₁₈₎	2550*	42*
Roach	9740	9.6	10.4	17.5	Apr 25	92	55
Tower	10620	45.1	45.4	49.0	May 07	99	92
Whiskey Park	9020	28.8	23.2	30.8	Apr 17	124	94
Willow Creek Pass	9523	12.7	11.0	16.4	May 03	115	77
Zirkel	9338	9.9	10.2₍₁₈₎	28.5₍₁₈₎	Apr 07₍₁₈₎	97	35
Basin Index (%)		115
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7498	0.1	0.0	12.6	Mar 27	*	1*
Bear River	9112	4.4	5.4₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	81	37
Bison Lake	10964	24.2	25.2	26.9	Apr 29	96	90
Buffalo Park	9249	8.6	6.9₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	125	58
Burro Mountain	9317	0.2	2.5	16.6	Apr 13	8	1
Columbine	9167	7.2	3.8	24.6	Apr 05	189	29
Crosho	8973	0.0	0.0	12.6	Apr 05	*	0*
Divide Peak	8730	9.3	6.4	21.4	Apr 15	145	43
Dry Lake	8271	9.1	0.9	22.3	Apr 04	1011*	41*
Elk River	8739	0.1	0.2	19.4	Apr 05	50*	1*
Elkhead Divide	8800	9.8	N/A	N/A	N/A	*	*
Little Snake River	8928	18.8	13.1₍₁₆₎	29.0₍₁₆₎	Apr 09₍₁₆₎	144	65
Lost Dog	9327	15.2	11.0₍₂₂₎	24.5₍₂₂₎	Apr 10₍₂₂₎	138	62
Lynx Pass	8919	0.2	0.0	11.5	Apr 04	*	2*
Old Battle	9860	34.7	34.0	38.8	May 05	102	89
Rabbit Ears	9411	19.1	16.3	27.9	Apr 21	117	68
Ripple Creek	10350	25.1	21.5	29.3	Apr 25	117	86
Sage Creek Basin	7850	-M	0.0₍₁₉₎	14.8₍₁₉₎	Apr 03₍₁₉₎	*	*
Sandstone RS	8152	0.1	0.0	14.2	Apr 05	*	1*
Tower	10620	45.1	45.4	49.0	May 07	99	92
Trapper Lake	9759	0.1	N/A	N/A	N/A	*	*
Whiskey Park	9020	28.8	23.2	30.8	Apr 17	124	94
Basin Index (%)		116
ARKANSAS RIVER BASIN
Apishapa	10027	0.1	0.0	7.6	Mar 16	*	1*
Brumley	10594	7.6	2.0	11.8	Apr 19	380	64
Fremont Pass	11326	21.7	18.0	20.8	May 11	121	104
Glen Cove	11391	6.7	1.0₍₁₆₎	5.7₍₁₆₎	Apr 23₍₁₆₎	670	118
Hayden Pass	10699	8.2	8.4₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	98	50
Medano Pass	9668	0.0	0.0₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	*	0*
Porphyry Creek	10788	14.4	6.2	17.0	Apr 15	232	85
Saint Elmo	10450	1.2	0.7₍₁₃₎	11.5₍₁₃₎	Apr 09₍₁₃₎	171*	10*
South Colony	10868	9.2	13.1₍₂₉₎	20.9₍₂₉₎	Apr 23₍₂₉₎	70	44
Ute Creek	10734	0.0	0.2₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	0*	0*
Whiskey Ck	10290	0.0	0.0	11.1	Apr 01	*	0*
Basin Index (%)		139
UPPER RIO GRANDE BASIN
Beartown	11600	5.5	5.9	23.2	Apr 17	93	24
Cochetopa Pass	10061	-M	0.0₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	*	*
Culebra #2	10562	0.2	0.0	14.0	Apr 05	*	1*
Cumbres Trestle	10035	0.4	6.8	26.2	Apr 06	6	2
Grayback	11626	0.1	N/A	N/A	N/A	*	*
Hayden Pass	10699	8.2	8.4₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	98	50
Lily Pond	11069	0.1	0.0	14.8	Apr 04	*	1*
Medano Pass	9668	0.0	0.0₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	*	0*
Middle Creek	11269	6.1	9.4	19.2	Apr 15	65	32
Moon Pass	11128	0.1	0.0₍₁₂₎	6.8₍₁₂₎	Apr 08₍₁₂₎	*	1*
North Costilla	10598	0.1	0.0	7.0	Mar 20	*	1*
San Antonio Sink	9143	0.0	N/A	N/A	N/A	*	*
Sargents Mesa	11499	6.0	6.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	100	53
Shuree	10092	0.1	0.0₍₁₀₎	6.0₍₁₀₎	Mar 08₍₁₀₎	*	2*
Slumgullion	11560	0.9	5.9	15.0	Apr 21	15	6
Trinchera	10922	0.3	0.0	11.2	Apr 05	*	3*
Upper Rio Grande	9379	0.0	0.0	6.6	Mar 18	*	0*
Ute Creek	10734	0.0	0.2₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	0*	0*
Wager Gulch	11132	0.1	N/A	N/A	N/A	*	*
Wolf Creek Summit	10957	12.2	28.8	35.5	Apr 29	42	34
Basin Index (%)		56*
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11600	5.5	5.9	23.2	Apr 17	93	24
Black Mesa	11564	20.3	N/A	N/A	N/A	*	*
Cascade	8880	-M	0.0	12.7	Mar 10	*	*
Cascade #2	9012	0.1	0.0	10.4	Mar 06	*	1*
Columbine Pass	9171	0.2	0.0	18.0	Mar 26	*	1*
Columbus Basin	10781	14.6	16.2₍₂₆₎	25.8₍₂₆₎	Apr 17₍₂₆₎	90	57
El Diente Peak	10217	0.0	0.0	14.6	Apr 04	*	0*
Lizard Head Pass	10193	0.1	0.9	15.2	Apr 05	11*	1*
Lone Cone	9755	-M	0.0	15.2	Apr 01	*	*
Mancos	10044	-M	0.0₍₂₆₎	16.3₍₂₆₎	Mar 23₍₂₆₎	*	*
Mineral Creek	10046	0.1	0.4	15.6	Apr 09	25*	1*
Molas Lake	10631	0.1	3.8	22.0	Apr 11	3	0
Red Mountain Pass	11080	17.2	17.2	25.0	Apr 25	100	69
Scotch Creek	9195	0.1	0.0	12.0	Mar 18	*	1*
Sharkstooth	10747	0.1	7.4₍₁₆₎	18.8₍₁₆₎	Apr 12₍₁₆₎	1	1
Spud Mountain	10674	1.6	6.5	25.6	Apr 04	25	6
Stump Lakes	11248	6.4	12.4	18.8	Apr 22	52	34
Upper San Juan	10140	-M	14.8	29.7	Apr 09	*	*
Vallecito	10782	0.0	0.4	14.8	Apr 05	0*	0*
Weminuche Creek	10749	0.0	0.0₍₁₀₎	16.4₍₁₀₎	Mar 28₍₁₀₎	*	0*
Wolf Creek Summit	10957	12.2	28.8	35.5	Apr 29	42	34
Basin Index (%)		58*

-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.