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, June 09, 2023

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	-M	0.0	13.7	Apr 08	*	*
Cochetopa Pass	10061	-M	0.0₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	*	*
Columbine Pass	9171	-M	0.0	18.0	Mar 26	*	*
Idarado	9812	0.1	0.0	14.4	Apr 06	*	1*
Mc Clure Pass	8774	0.2	0.0	16.6	Apr 04	*	1*
Mesa Lakes	10168	-M	0.0	19.0	Apr 15	*	*
Overland Res.	9893	-M	0.0	12.4	Apr 05	*	*
Park Cone	9621	-M	0.0	10.4	Apr 09	*	*
Park Reservoir	9987	27.5	0.8	27.4	Apr 26	3438*	100*
Porphyry Creek	10788	0.2	0.0	17.0	Apr 15	*	1*
Red Mountain Pass	11080	9.3	0.7	25.0	Apr 25	1329*	37*
Sargents Mesa	11499	0.0	0.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	*	0*
Schofield Pass	10653	16.6	1.3	35.1	Apr 19	1277*	47*
Slumgullion	11560	0.0	0.0	15.0	Apr 21	*	0*
Upper Taylor	10717	-M	0.0₍₁₁₎	13.6₍₁₁₎	Apr 03₍₁₁₎	*	*
Wager Gulch	11132	0.0	N/A	N/A	N/A	*	*
Basin Index (%)		1925*
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10976	8.6	4.2₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	205	34
Bear River	9112	-M	0.0₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	*	*
Beaver Ck Village	8565	0.1	0.0₍₁₇₎	11.7₍₁₇₎	Apr 02₍₁₇₎	*	1*
Berthoud Summit	11314	4.6	1.6	23.2	May 03	288*	20*
Bison Lake	10964	25.0	12.0	26.9	Apr 29	208	93
Buffalo Park	9249	-M	0.0₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	*	*
Chapman Tunnel	10100	0.0	0.0₍₁₃₎	15.4₍₁₃₎	Apr 19₍₁₃₎	*	0*
Columbine	9167	-M	0.0	24.6	Apr 05	*	*
Copper Mountain	10523	0.1	0.0	17.4	Apr 26	*	1*
Elliot Ridge	10549	0.0	0.0₍₁₁₎	23.2₍₁₁₎	Apr 25₍₁₁₎	*	0*
Fool Creek	11156	9.5	N/A	N/A	N/A	*	*
Fremont Pass	11326	9.3	8.2	20.8	May 11	113	45
Grizzly Peak	11139	0.2	0.0	19.6	Apr 21	*	1*
High Lonesome	10638	0.0	N/A	N/A	N/A	*	*
Hoosier Pass	11611	2.8	0.0	17.3	Apr 27	*	16*
Independence Pass	10598	0.0	0.0	17.4	Apr 18	*	0*
Ivanhoe	10541	0.2	0.0₍₂₉₎	17.2₍₂₉₎	Apr 26₍₂₉₎	*	1*
Jones Pass	10426	-M	0.2₍₂₁₎	16.8₍₂₁₎	Apr 27₍₂₁₎	*	*
Kiln	9624	-M	0.0	13.2	Apr 07	*	*
Lake Irene	10682	0.4	1.1	25.4	Apr 26	36*	2*
Lynx Pass	8919	-M	0.0	11.5	Apr 04	*	*
Mc Clure Pass	8774	0.2	0.0	16.6	Apr 04	*	1*
Mccoy Park	9516	0.0	0.0₍₁₈₎	14.6₍₁₈₎	Apr 07₍₁₈₎	*	0*
Mesa Lakes	10168	-M	0.0	19.0	Apr 15	*	*
Middle Fork Camp	8969	0.5	0.0₍₁₉₎	11.5₍₁₉₎	Apr 04₍₁₉₎	*	4*
Nast Lake	8731	0.2	0.0	8.8	Mar 28	*	2*
North Lost Trail	9219	0.2	0.0	17.4	Apr 04	*	1*
Overland Res.	9893	-M	0.0	12.4	Apr 05	*	*
Park Reservoir	9987	27.5	0.8	27.4	Apr 26	3438*	100*
Phantom Valley	9045	0.1	0.0	10.4	Mar 30	*	1*
Schofield Pass	10653	16.6	1.3	35.1	Apr 19	1277*	47*
Stillwater Creek	8880	-M	N/A	N/A	N/A	*	*
Summit Ranch	9371	0.1	0.0	11.4	Apr 09	*	1*
Vail Mountain	10310	0.4	0.0	20.8	Apr 27	*	2*
Willow Creek Pass	9523	0.0	0.0	16.4	May 03	*	0*
Basin Index (%)		333*
SOUTH PLATTE RIVER BASIN
Bear Lake	9522	0.0	0.0	19.8	Apr 27	*	0*
Berthoud Summit	11314	4.6	1.6	23.2	May 03	288*	20*
Black Mountain	8980	0.0	0.0₍₁₀₎	12.5₍₁₀₎	Apr 17₍₁₀₎	*	0*
Buckskin Joe	11166	0.0	0.0₍₂₁₎	12.6₍₂₁₎	May 02₍₂₁₎	*	0*
Copeland Lake	8555	0.0	0.0	6.0	Mar 08	*	0*
Deadman Hill	10239	0.2	1.6	21.8	May 04	12*	1*
Echo Lake	10694	0.2	0.0₍₂₂₎	9.0₍₂₂₎	Apr 29₍₂₂₎	*	2*
Hoosier Pass	11611	2.8	0.0	17.3	Apr 27	*	16*
Hourglass Lake	9417	0.2	0.0₍₁₂₎	13.0₍₁₂₎	Apr 19₍₁₂₎	*	2*
Jackwhacker Gulch	11054	0.0	0.0₍₂₂₎	14.4₍₂₂₎	Apr 25₍₂₂₎	*	0*
Joe Wright	10158	9.1	8.0	24.0	May 05	114	38
Lake Eldora	9728	-M	0.0	14.0	Apr 09	*	*
Lake Irene	10682	0.4	1.1	25.4	Apr 26	36*	2*
Long Draw Resv	10008	0.0	0.4₍₁₁₎	18.3₍₁₁₎	Apr 27₍₁₁₎	0*	0*
Loveland Basin	11427	2.9	4.2₍₂₈₎	24.4₍₂₈₎	May 02₍₂₈₎	69	12
Michigan Creek	10702	0.1	0.0₍₂₂₎	13.2₍₂₂₎	Apr 26₍₂₂₎	*	1*
Niwot	9979	0.3	0.0	15.0	Apr 19	*	2*
Rough And Tumble	10432	0.1	0.0₍₂₂₎	8.3₍₂₂₎	Apr 24₍₂₂₎	*	1*
Sawtooth	9676	5.2	N/A	N/A	N/A	*	*
University Camp	10360	6.4	4.6	19.9	May 07	139	32
Wild Basin	9439	0.1	0.0₍₁₅₎	18.6₍₁₅₎	Apr 25₍₁₅₎	*	1*
Willow Park	10732	1.6	0.0	21.0	Apr 29	*	8*
Basin Index (%)		135*
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10976	8.6	4.2₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	205	34
Blackhall Mtn	9839	4.6	14.5₍₁₁₎	34.6₍₁₁₎	Apr 27₍₁₁₎	32	13
Columbine	9167	-M	0.0	24.6	Apr 05	*	*
Deadman Hill	10239	0.2	1.6	21.8	May 04	12*	1*
Joe Wright	10158	9.1	8.0	24.0	May 05	114	38
Never Summer	10323	11.0	11.2₍₁₈₎	23.8₍₁₈₎	May 11₍₁₈₎	98	46
Rawah	9069	0.0	0.0₍₁₈₎	12.2₍₁₈₎	Apr 07₍₁₈₎	*	0*
Roach	9740	0.1	0.0	17.5	Apr 25	*	1*
Tower	10620	22.4	23.6	49.0	May 07	95	46
Whiskey Park	9020	0.0	0.0	30.8	Apr 17	*	0*
Willow Creek Pass	9523	0.0	0.0	16.4	May 03	*	0*
Zirkel	9338	-M	0.0₍₁₈₎	28.5₍₁₈₎	Apr 07₍₁₈₎	*	*
Basin Index (%)		89*
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7498	0.0	0.0	12.6	Mar 27	*	0*
Bear River	9112	-M	0.0₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	*	*
Bison Lake	10964	25.0	12.0	26.9	Apr 29	208	93
Buffalo Park	9249	-M	0.0₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	*	*
Burro Mountain	9317	0.3	0.0	16.6	Apr 13	*	2*
Columbine	9167	-M	0.0	24.6	Apr 05	*	*
Crosho	8973	0.2	0.0	12.6	Apr 05	*	2*
Divide Peak	8730	0.0	0.0	21.4	Apr 15	*	0*
Dry Lake	8271	0.1	0.0	22.3	Apr 04	*	0*
Elk River	8739	-M	0.0	19.4	Apr 05	*	*
Elkhead Divide	8800	0.1	N/A	N/A	N/A	*	*
Little Snake River	8928	0.0	0.0₍₁₆₎	29.0₍₁₆₎	Apr 09₍₁₆₎	*	0*
Lost Dog	9327	-M	0.0₍₂₂₎	24.5₍₂₂₎	Apr 10₍₂₂₎	*	*
Lynx Pass	8919	-M	0.0	11.5	Apr 04	*	*
Old Battle	9860	25.9	17.2	38.8	May 05	151	67
Rabbit Ears	9411	0.1	0.0	27.9	Apr 21	*	0*
Ripple Creek	10350	15.0	5.1	29.3	Apr 25	294	51
Sage Creek Basin	7850	0.0	0.0₍₁₉₎	14.8₍₁₉₎	Apr 03₍₁₉₎	*	0*
Sandstone RS	8152	0.0	0.0	14.2	Apr 05	*	0*
Tower	10620	22.4	23.6	49.0	May 07	95	46
Trapper Lake	9759	0.0	N/A	N/A	N/A	*	*
Whiskey Park	9020	0.0	0.0	30.8	Apr 17	*	0*
Basin Index (%)		154*
ARKANSAS RIVER BASIN
Apishapa	10027	-M	0.0	7.6	Mar 16	*	*
Brumley	10594	-M	0.0	11.8	Apr 19	*	*
Fremont Pass	11326	9.3	8.2	20.8	May 11	113	45
Glen Cove	11391	-M	0.0₍₁₆₎	5.7₍₁₆₎	Apr 23₍₁₆₎	*	*
Hayden Pass	10699	0.0	0.0₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	*	0*
Medano Pass	9668	0.1	0.0₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	*	1*
Porphyry Creek	10788	0.2	0.0	17.0	Apr 15	*	1*
Saint Elmo	10450	-M	0.0₍₁₃₎	11.5₍₁₃₎	Apr 09₍₁₃₎	*	*
South Colony	10868	0.0	0.0₍₂₉₎	20.9₍₂₉₎	Apr 23₍₂₉₎	*	0*
Ute Creek	10734	0.0	0.0₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	*	0*
Whiskey Ck	10290	-M	0.0	11.1	Apr 01	*	*
Basin Index (%)		117*
UPPER RIO GRANDE BASIN
Beartown	11600	-M	0.0	23.2	Apr 17	*	*
Cochetopa Pass	10061	-M	0.0₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	*	*
Culebra #2	10562	0.1	0.0	14.0	Apr 05	*	1*
Cumbres Trestle	10035	0.0	0.0	26.2	Apr 06	*	0*
Grayback	11626	0.0	N/A	N/A	N/A	*	*
Hayden Pass	10699	0.0	0.0₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	*	0*
Lily Pond	11069	-M	0.0	14.8	Apr 04	*	*
Medano Pass	9668	0.1	0.0₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	*	1*
Middle Creek	11269	-M	0.0	19.2	Apr 15	*	*
Moon Pass	11128	-M	0.0₍₁₂₎	6.8₍₁₂₎	Apr 08₍₁₂₎	*	*
North Costilla	10598	0.5	0.0	7.0	Mar 20	*	7*
San Antonio Sink	9143	-M	N/A	N/A	N/A	*	*
Sargents Mesa	11499	0.0	0.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	*	0*
Shuree	10092	-M	0.0₍₁₀₎	6.0₍₁₀₎	Mar 08₍₁₀₎	*	*
Slumgullion	11560	0.0	0.0	15.0	Apr 21	*	0*
Trinchera	10922	0.0	0.0	11.2	Apr 05	*	0*
Upper Rio Grande	9379	0.0	0.0	6.6	Mar 18	*	0*
Ute Creek	10734	0.0	0.0₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	*	0*
Wager Gulch	11132	0.0	N/A	N/A	N/A	*	*
Wolf Creek Summit	10957	7.8	10.9	35.5	Apr 29	72	22
Basin Index (%)		78*
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11600	-M	0.0	23.2	Apr 17	*	*
Black Mesa	11564	28.4	N/A	N/A	N/A	*	*
Cascade	8880	-M	0.0	12.7	Mar 10	*	*
Cascade #2	9012	-M	0.0	10.4	Mar 06	*	*
Columbine Pass	9171	-M	0.0	18.0	Mar 26	*	*
Columbus Basin	10781	8.4	0.0₍₂₆₎	25.8₍₂₆₎	Apr 17₍₂₆₎	*	33*
El Diente Peak	10217	-M	0.0	14.6	Apr 04	*	*
Lizard Head Pass	10193	-M	0.0	15.2	Apr 05	*	*
Lone Cone	9755	0.0	0.0	15.2	Apr 01	*	0*
Mancos	10044	-M	0.0₍₂₆₎	16.3₍₂₆₎	Mar 23₍₂₆₎	*	*
Mineral Creek	10046	0.1	0.0	15.6	Apr 09	*	1*
Molas Lake	10631	-M	0.0	22.0	Apr 11	*	*
Red Mountain Pass	11080	9.3	0.7	25.0	Apr 25	1329*	37*
Scotch Creek	9195	0.0	0.0	12.0	Mar 18	*	0*
Sharkstooth	10747	-M	0.0₍₁₆₎	18.8₍₁₆₎	Apr 12₍₁₆₎	*	*
Spud Mountain	10674	5.5	0.0	25.6	Apr 04	*	21*
Stump Lakes	11248	0.1	0.0	18.8	Apr 22	*	1*
Upper San Juan	10140	-M	0.0	29.7	Apr 09	*	*
Vallecito	10782	-M	0.0	14.8	Apr 05	*	*
Weminuche Creek	10749	-M	0.0₍₁₀₎	16.4₍₁₀₎	Mar 28₍₁₀₎	*	*
Wolf Creek Summit	10957	7.8	10.9	35.5	Apr 29	72	22
Basin Index (%)		269*

-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.

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