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, December 10, 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	3.8	13.7	Apr 08	132	36
Castle Peak	11500	7.9	N/A	N/A	N/A	*	*
Cochetopa Pass	10061	2.4	1.2₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	200	50
Columbine Pass	9171	6.0	3.1	18.0	Mar 26	194	33
Idarado	9812	4.0	3.5	14.4	Apr 06	114	28
Mc Clure Pass	8774	4.4	3.9	16.6	Apr 04	113	27
Mesa Lakes	10168	5.0	4.5	19.0	Apr 15	111	26
Overland Res.	9893	3.5	3.0	12.4	Apr 05	117	28
Park Cone	9621	3.9	2.6	10.4	Apr 09	150	38
Park Reservoir	9987	5.8	6.3	27.4	Apr 26	92	21
Porphyry Creek	10788	7.4	4.1	17.0	Apr 15	180	44
Rat Creek	11680	6.0	N/A	N/A	N/A	*	*
Red Mountain Pass	11080	8.2	6.2	25.0	Apr 25	132	33
Sargents Mesa	11499	3.7	3.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	123	32
Schofield Pass	10653	9.0	8.8	35.1	Apr 19	102	26
Slumgullion	11560	5.9	4.8	15.0	Apr 21	123	39
Upper Taylor	10717	4.5	3.1₍₁₁₎	13.6₍₁₁₎	Apr 03₍₁₁₎	145	33
Wager Gulch	11132	5.5	N/A	N/A	N/A	*	*
Basin Index (%)		127
UPPER COLORADO RIVER BASIN
Arapaho Ridge	10976	6.5	6.6₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	98	26
Bear River	9112	3.5	3.0₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	117	29
Beaver Ck Village	8565	4.7	3.2₍₁₇₎	11.7₍₁₇₎	Apr 02₍₁₇₎	147	40
Berthoud Summit	11314	4.9	4.6	23.2	May 03	107	21
Bison Lake	10964	5.7	7.2	26.9	Apr 29	79	21
Buffalo Park	9249	3.4	4.0₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	85	23
Castle Peak	11500	7.9	N/A	N/A	N/A	*	*
Chapman Tunnel	10100	5.1	3.9₍₁₃₎	15.4₍₁₃₎	Apr 19₍₁₃₎	131	33
Columbine	9167	4.8	5.2	24.6	Apr 05	92	20
Copper Mountain	10523	5.6	4.4	17.4	Apr 26	127	32
Elliot Ridge	10549	5.3	4.0₍₁₁₎	23.2₍₁₁₎	Apr 25₍₁₁₎	132	23
Fool Creek	11156	5.8	N/A	N/A	N/A	*	*
Fremont Pass	11326	6.1	4.8	20.8	May 11	127	29
Grizzly Peak	11139	5.4	5.0	19.6	Apr 21	108	28
High Lonesome	10638	5.2	N/A	N/A	N/A	*	*
Hoosier Pass	11611	4.9	4.9	17.3	Apr 27	100	28
Independence Pass	10598	5.4	5.3	17.4	Apr 18	102	31
Ivanhoe	10541	6.3	4.3₍₂₉₎	17.2₍₂₉₎	Apr 26₍₂₉₎	147	37
Jones Pass	10426	4.9	4.3₍₂₁₎	16.8₍₂₁₎	Apr 27₍₂₁₎	114	29
Kiln	9624	4.6	3.2	13.2	Apr 07	144	35
Lake Irene	10682	4.5	5.9	25.4	Apr 26	76	18
Lynx Pass	8919	2.6	3.0	11.5	Apr 04	87	23
Mc Clure Pass	8774	4.4	3.9	16.6	Apr 04	113	27
Mccoy Park	9516	5.0	3.7₍₁₈₎	14.6₍₁₈₎	Apr 07₍₁₈₎	135	34
Mesa Lakes	10168	5.0	4.5	19.0	Apr 15	111	26
Middle Fork Camp	8969	3.7	3.3₍₁₉₎	11.5₍₁₉₎	Apr 04₍₁₉₎	112	32
Nast Lake	8731	3.6	1.8	8.8	Mar 28	200	41
North Lost Trail	9219	5.6	4.2	17.4	Apr 04	133	32
Overland Res.	9893	3.5	3.0	12.4	Apr 05	117	28
Park Reservoir	9987	5.8	6.3	27.4	Apr 26	92	21
Phantom Valley	9045	1.9	2.7	10.4	Mar 30	70	18
Schofield Pass	10653	9.0	8.8	35.1	Apr 19	102	26
Stillwater Creek	8880	1.1	N/A	N/A	N/A	*	*
Summit Ranch	9371	4.3	3.0	11.4	Apr 09	143	38
Vail Mountain	10310	5.2	4.8	20.8	Apr 27	108	25
Willow Creek Pass	9523	4.3	4.3	16.4	May 03	100	26
Basin Index (%)		110
SOUTH PLATTE RIVER BASIN
Bear Lake	9522	3.2	4.2	19.8	Apr 27	76	16
Berthoud Summit	11314	4.9	4.6	23.2	May 03	107	21
Black Mountain	8980	2.6	3.5₍₁₀₎	12.5₍₁₀₎	Apr 17₍₁₀₎	74	21
Buckskin Joe	11166	3.3	3.0₍₂₁₎	12.6₍₂₁₎	May 02₍₂₁₎	110	26
Copeland Lake	8555	2.0	1.4	6.0	Mar 08	143	33
Deadman Hill	10239	4.6	5.4	21.8	May 04	85	21
Echo Lake	10694	3.3	1.9₍₂₂₎	9.0₍₂₂₎	Apr 29₍₂₂₎	174	37
Hoosier Pass	11611	4.9	4.9	17.3	Apr 27	100	28
Hourglass Lake	9417	3.9	3.2₍₁₂₎	13.0₍₁₂₎	Apr 19₍₁₂₎	122	30
Jackwhacker Gulch	11054	2.8	3.4₍₂₂₎	14.4₍₂₂₎	Apr 25₍₂₂₎	82	19
Joe Wright	10158	5.9	6.3	24.0	May 05	94	25
Lake Eldora	9728	2.8	3.1	14.0	Apr 09	90	20
Lake Irene	10682	4.5	5.9	25.4	Apr 26	76	18
Long Draw Resv	10008	3.7	4.8₍₁₁₎	18.3₍₁₁₎	Apr 27₍₁₁₎	77	20
Loveland Basin	11427	5.3	5.7₍₂₈₎	24.4₍₂₈₎	May 02₍₂₈₎	93	22
Michigan Creek	10702	2.4	2.8₍₂₂₎	13.2₍₂₂₎	Apr 26₍₂₂₎	86	18
Niwot	9979	3.8	3.3	15.0	Apr 19	115	25
Rough And Tumble	10432	3.4	1.8₍₂₂₎	8.3₍₂₂₎	Apr 24₍₂₂₎	189	41
Sawtooth	9676	5.9	N/A	N/A	N/A	*	*
University Camp	10360	3.5	4.0	19.9	May 07	88	18
Wild Basin	9439	3.5	4.0₍₁₅₎	18.6₍₁₅₎	Apr 25₍₁₅₎	88	19
Willow Park	10732	3.8	4.7	21.0	Apr 29	81	18
Basin Index (%)		95
LARAMIE AND NORTH PLATTE RIVER BASINS
Arapaho Ridge	10976	6.5	6.6₍₁₈₎	25.2₍₁₈₎	May 01₍₁₈₎	98	26
Blackhall Mtn	9839	5.8	8.7₍₁₁₎	34.6₍₁₁₎	Apr 27₍₁₁₎	67	17
Columbine	9167	4.8	5.2	24.6	Apr 05	92	20
Deadman Hill	10239	4.6	5.4	21.8	May 04	85	21
Joe Wright	10158	5.9	6.3	24.0	May 05	94	25
Never Summer	10323	5.0	5.9₍₁₈₎	23.8₍₁₈₎	May 11₍₁₈₎	85	21
Rawah	9069	3.5	3.2₍₁₈₎	12.2₍₁₈₎	Apr 07₍₁₈₎	109	29
Roach	9740	3.7	4.8	17.5	Apr 25	77	21
Tower	10620	8.8	12.0	49.0	May 07	73	18
Whiskey Park	9020	4.9	6.8	30.8	Apr 17	72	16
Willow Creek Pass	9523	4.3	4.3	16.4	May 03	100	26
Zirkel	9338	3.7	6.1₍₁₈₎	28.5₍₁₈₎	Apr 07₍₁₈₎	61	13
Basin Index (%)		82
YAMPA AND WHITE RIVER BASINS
Battle Mountain	7498	2.4	2.4	12.6	Mar 27	100	19
Bear River	9112	3.5	3.0₍₁₆₎	12.0₍₁₆₎	Apr 21₍₁₆₎	117	29
Bison Lake	10964	5.7	7.2	26.9	Apr 29	79	21
Buffalo Park	9249	3.4	4.0₍₂₅₎	14.9₍₂₅₎	Apr 14₍₂₅₎	85	23
Burro Mountain	9317	4.3	3.9	16.6	Apr 13	110	26
Columbine	9167	4.8	5.2	24.6	Apr 05	92	20
Crosho	8973	3.9	2.8	12.6	Apr 05	139	31
Divide Peak	8730	3.3	5.4	21.4	Apr 15	61	15
Dry Lake	8271	4.9	5.4	22.3	Apr 04	91	22
Elk River	8739	3.4	4.0	19.4	Apr 05	85	18
Elkhead Divide	8800	3.4	N/A	N/A	N/A	*	*
Little Snake River	8928	3.9	5.8₍₁₆₎	29.0₍₁₆₎	Apr 09₍₁₆₎	67	13
Lost Dog	9327	3.4	4.8₍₂₂₎	24.5₍₂₂₎	Apr 10₍₂₂₎	71	14
Lynx Pass	8919	2.6	3.0	11.5	Apr 04	87	23
Old Battle	9860	5.6	8.8	38.8	May 05	64	14
Rabbit Ears	9411	6.2	6.0	27.9	Apr 21	103	22
Ripple Creek	10350	6.8	7.2	29.3	Apr 25	94	23
Sage Creek Basin	7850	2.4	3.4₍₁₉₎	14.8₍₁₉₎	Apr 03₍₁₉₎	71	16
Sandstone RS	8152	3.1	2.8	14.2	Apr 05	111	22
Tower	10620	8.8	12.0	49.0	May 07	73	18
Trapper Lake	9759	2.7	N/A	N/A	N/A	*	*
Whiskey Park	9020	4.9	6.8	30.8	Apr 17	72	16
Basin Index (%)		84
ARKANSAS RIVER BASIN
Apishapa	10027	2.0	1.0	7.6	Mar 16	200	26
Brumley	10594	3.2	3.4	11.8	Apr 19	94	27
Fremont Pass	11326	6.1	4.8	20.8	May 11	127	29
Glen Cove	11391	3.7	0.9₍₁₆₎	5.7₍₁₆₎	Apr 23₍₁₆₎	411	65
Hayden Pass	10699	6.6	3.6₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	183	40
Medano Pass	9668	2.8	1.7₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	165	38
Porphyry Creek	10788	7.4	4.1	17.0	Apr 15	180	44
Saint Elmo	10450	4.8	3.1₍₁₃₎	11.5₍₁₃₎	Apr 09₍₁₃₎	155	42
South Colony	10868	6.7	5.5₍₂₉₎	20.9₍₂₉₎	Apr 23₍₂₉₎	122	32
Ute Creek	10734	4.1	3.4₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	121	33
Whiskey Ck	10290	2.0	2.4	11.1	Apr 01	83	18
Basin Index (%)		146
UPPER RIO GRANDE BASIN
Beartown	11600	8.3	5.7	23.2	Apr 17	146	36
Cochetopa Pass	10061	2.4	1.2₍₁₆₎	4.8₍₁₆₎	Mar 29₍₁₆₎	200	50
Culebra #2	10562	3.4	3.4	14.0	Apr 05	100	24
Cumbres Trestle	10035	5.7	6.2	26.2	Apr 06	92	22
Elwood Pass	11680	8.0	N/A	N/A	N/A	*	*
Grayback	11626	3.7	N/A	N/A	N/A	*	*
Hayden Pass	10699	6.6	3.6₍₁₃₎	16.3₍₁₃₎	Apr 18₍₁₃₎	183	40
Lily Pond	11069	4.3	3.4	14.8	Apr 04	126	29
Medano Pass	9668	2.8	1.7₍₂₅₎	7.4₍₂₅₎	Mar 09₍₂₅₎	165	38
Middle Creek	11269	6.9	5.8	19.2	Apr 15	119	36
Moon Pass	11128	3.8	1.9₍₁₂₎	6.8₍₁₂₎	Apr 08₍₁₂₎	200	56
North Costilla	10598	0.7	2.0	7.0	Mar 20	35	10
Rat Creek	11680	6.0	N/A	N/A	N/A	*	*
San Antonio Sink	9143	2.4	N/A	N/A	N/A	*	*
Sargents Mesa	11499	3.7	3.0₍₁₂₎	11.4₍₁₂₎	Apr 13₍₁₂₎	123	32
Shuree	10092	2.0	1.4₍₁₀₎	6.0₍₁₀₎	Mar 08₍₁₀₎	143	33
Slumgullion	11560	5.9	4.8	15.0	Apr 21	123	39
Trinchera	10922	4.2	2.9	11.2	Apr 05	145	38
Upper Rio Grande	9379	2.3	1.6	6.6	Mar 18	144	35
Ute Creek	10734	4.1	3.4₍₂₀₎	12.4₍₂₀₎	Apr 04₍₂₀₎	121	33
Wager Gulch	11132	5.5	N/A	N/A	N/A	*	*
Wolf Creek Summit	10957	9.9	8.9	35.5	Apr 29	111	28
Basin Index (%)		126
SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS
Beartown	11600	8.3	5.7	23.2	Apr 17	146	36
Black Mesa	11564	6.5	N/A	N/A	N/A	*	*
Cascade	8880	-M	2.3	12.7	Mar 10	*	*
Cascade #2	9012	2.3	2.4	10.4	Mar 06	96	22
Columbine Pass	9171	6.0	3.1	18.0	Mar 26	194	33
Columbus Basin	10781	7.8	6.2₍₂₆₎	25.8₍₂₆₎	Apr 17₍₂₆₎	126	30
El Diente Peak	10217	1.1	2.9	14.6	Apr 04	38	8
Elwood Pass	11680	8.0	N/A	N/A	N/A	*	*
Lizard Head Pass	10193	5.8	4.0	15.2	Apr 05	145	38
Lone Cone	9755	4.1	4.2	15.2	Apr 01	98	27
Mancos	10044	1.4	4.0₍₂₆₎	16.3₍₂₆₎	Mar 23₍₂₆₎	35	9
Mineral Creek	10046	5.4	3.8	15.6	Apr 09	142	35
Molas Lake	10631	6.6	4.6	22.0	Apr 11	143	30
Red Mountain Pass	11080	8.2	6.2	25.0	Apr 25	132	33
Scotch Creek	9195	4.4	2.6	12.0	Mar 18	169	37
Sharkstooth	10747	5.2	4.4₍₁₆₎	18.8₍₁₆₎	Apr 12₍₁₆₎	118	28
Spud Mountain	10674	6.5	5.7	25.6	Apr 04	114	25
Stump Lakes	11248	7.2	4.8	18.8	Apr 22	150	38
Upper San Juan	10140	6.1	7.0	29.7	Apr 09	87	21
Vallecito	10782	4.2	3.3	14.8	Apr 05	127	28
Weminuche Creek	10749	5.4	3.0₍₁₀₎	16.4₍₁₀₎	Mar 28₍₁₀₎	180	33
Wolf Creek Summit	10957	9.9	8.9	35.5	Apr 29	111	28
Basin Index (%)		122

-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.