Columbia River Basin SNOTEL Snow/Precipitation Update Report

Columbia River Basin SNOTEL Snow/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 Sunday, March 29, 2026

Basin Site Name	Elev (ft)	Snow Water Equivalent			Water Year-to-Date Precipitation
Basin Site Name	Elev (ft)	Current (in)	Median (in)	Pct of Median	Current (in)	Median (in)	Pct of Median
KOOTENAI RIVER IN MONTANA
Banfield Mountain	5580	13.2	16.7	79	29.9	25.6	117
Bear Mountain	5460	-M	53.9	*	71.1	67.7	105
Garver Creek	4250	6.2	9.6	65	21.4	17.4₍₂₄₎	123
Grave Creek	4350	5.6	15.0	37	42.7	30.8	139
Hand Creek	5030	7.1	9.9	72	19.0	16.6	114
Hawkins Lake	6460	21.5	25.6	84	39.0	29.8	131
Poorman Creek	5050	20.7	35.0₍₂₂₎	59	67.8	55.2₍₂₂₎	123
Stahl Peak	6040	33.2	35.3	94	41.6	39.2	106
Basin Index (%)		73			118
FLATHEAD RIVER BASIN
Ashley Divide	4820	-M	N/A	*	13.2	N/A	*
Badger Pass	6870	33.8	29.3₍₂₉₎	115	38.0	31.1₍₂₉₎	122
Bisson Creek	4880	6.5	9.1₍₂₉₎	71	23.4	16.2₍₂₈₎	144
Blacktail Mtn	5660	4.4	12.0₍₁₀₎	37	14.2	13.2₍₁₀₎	108
Emery Creek	4340	5.6	14.4	39	27.8	24.8	112
Flattop Mtn.	6280	40.2	44.1	91	59.5	50.8	117
Grave Creek	4350	5.6	15.0	37	42.7	30.8	139
Hand Creek	5030	7.1	9.9	72	19.0	16.6	114
Kraft Creek	4770	3.7	11.2	33	35.7	25.4	141
Many Glacier	4930	0.0	12.6	0	39.2	28.6	137
Moss Peak	6760	37.7	35.2	107	45.6	36.4	125
Noisy Basin	6070	33.6	39.3	85	40.5	43.0	94
North Fork Jocko	6110	38.2	39.5	97	50.5	48.2	105
Pike Creek	5930	0.1	N/A	*	37.7	N/A	*
Sleeping Woman	6120	11.9	15.2₍₂₉₎	78	28.7	21.4₍₂₈₎	134
Stahl Peak	6040	33.2	35.3	94	41.6	39.2	106
Stuart Mountain	7270	38.2	31.8₍₂₆₎	120	31.6	31.1₍₂₆₎	102
Basin Index (%)		85			118
UPPER CLARK FORK RIVER BASIN
Barker Lakes	8250	9.6	13.3	72	16.3	14.7	111
Basin Creek	7120	3.8	7.3	52	7.4	8.2	90
Black Pine	7170	9.6	10.0	96	16.1	12.5	129
Combination	5620	-M	4.0	*	11.8	9.0	131
Copper Bottom	5200	0.0	7.6	0	23.5	15.2	155
Copper Camp	6980	33.7	38.8₍₁₇₎	87	43.6	26.4₍₁₇₎	165
Lubrecht Flume	4690	0.1	2.6	4	15.7	10.4	151
Nevada Ridge	7030	18.5	15.1₍₂₆₎	123	20.3	15.4₍₂₆₎	132
N Fk Elk Creek	6180	13.0	10.7	121	19.4	13.1	148
North Fork Jocko	6110	38.2	39.5	97	50.5	48.2	105
Peterson Meadows	7190	8.5	9.8	87	14.7	12.2₍₂₂₎	120
Rocker Peak	7960	14.5	12.6	115	16.6	12.6	132
Skalkaho Summit	7260	21.3	21.0	101	26.1	21.6	121
Stuart Mountain	7270	38.2	31.8₍₂₆₎	120	31.6	31.1₍₂₆₎	102
Warm Springs	7840	27.5	19.8	139	28.9	21.3	136
Basin Index (%)		99			126
BITTERROOT
Daly Creek	5780	6.6	9.8	67	-M	13.1	*
Lolo Pass	5280	20.5	27.4	75	38.8	33.8	115
Moose Creek	6170	10.4	15.4	68	20.9	19.3	108
Nez Perce Camp	5670	10.5	12.9	81	25.7	19.9	129
Saddle Mtn.	7890	21.6	22.8	95	22.3	21.4	104
Skalkaho Summit	7260	21.3	21.0	101	26.1	21.6	121
Twelvemile Creek	5530	6.3	16.4	38	42.4	33.3	127
Twin Lakes	6380	35.6	38.6	92	54.2	45.9	118
Basin Index (%)		81			118
LOWER CLARK FORK RIVER BASIN
Hoodoo Basin	6060	42.3	37.4	113	52.0	45.7	114
Humboldt Gulch	4260	11.7	10.3₍₂₉₎	114	39.9	37.8	106
Lolo Pass	5280	20.5	27.4	75	38.8	33.8	115
Lookout	5180	11.8	26.2	45	41.7	37.4	111
Poorman Creek	5050	20.7	35.0₍₂₂₎	59	67.8	55.2₍₂₂₎	123
Sleeping Woman	6120	11.9	15.2₍₂₉₎	78	28.7	21.4₍₂₈₎	134
Stuart Mountain	7270	38.2	31.8₍₂₆₎	120	31.6	31.1₍₂₆₎	102
Sunset	5570	12.5	21.2	59	35.5	33.5	106
Basin Index (%)		83			114
IDAHO PANHANDLE REGION
Bear Mountain	5460	-M	53.9	*	71.1	67.7	105
Bunchgrass Mdw	5020	12.5	27.0	46	31.0	35.0	89
Humboldt Gulch	4260	11.7	10.3₍₂₉₎	114	39.9	37.8	106
Lookout	5180	11.8	26.2	45	41.7	37.4	111
Lost Lake	6090	38.5	50.9	76	65.4	57.0	115
Mica Creek	4480	9.2	21.1	44	38.0	38.9	98
Mosquito Ridge	5270	18.6	32.4	57	44.4	41.6	107
Quartz Peak	4710	4.4	19.2	23	32.5	32.6	100
Schweitzer Basin	6090	32.9	47.5	69	39.5	38.8	102
Sherwin	3190	0.4	6.6₍₂₉₎	6	29.4	27.6₍₂₉₎	107
Sunset	5570	12.5	21.2	59	35.5	33.5	106
Basin Index (%)		58			105
COLUMBIA ABOVE METHOW
Bunchgrass Mdw	5020	12.5	27.0	46	31.0	35.0	89
Harts Pass	6490	56.8	43.8	130	45.9	37.4	123
Moses Mtn	5470	0.7	15.1₍₂₉₎	5	9.9	16.6₍₂₉₎	60
Salmon Meadows	4460	0.2	9.9	2	14.4	12.8	112
Basin Index (%)		73			99
CHELAN, ENTIAT, WENATCHEE
Blewett Pass	4240	0.0	13.0	0	34.8	27.0	129
Lyman Lake	5990	47.8	59.3	81	73.3	63.1	116
Park Creek Ridge	4610	26.6	45.8	58	65.2	56.6	115
Pope Ridge	3590	4.2	16.0	26	36.9	27.6	134
Stevens Pass	3940	23.1	35.8	65	88.0	71.6	123
Trough	5480	3.6	10.1	36	23.7	19.8	120
Upper Wheeler	4330	4.7	11.4	41	26.5	19.2	138
Basin Index (%)		57			122
YAKIMA, AHTANUM
Bumping Ridge	4600	16.0	26.6	60	68.4	50.4	136
Fish Lake	3440	13.3	29.0	46	62.0	51.3	121
Green Lake	5920	17.7	23.3	76	35.7	29.2	122
Grouse Camp	5390	1.3	19.4	7	27.9	25.8	108
Lost Horse	5100	-M	18.2	*	-M	24.2	*
Morse Lake	5400	31.9	52.4	61	65.7	66.6	99
Sasse Ridge	4340	11.3	30.8	37	54.9	48.0	114
White Pass E.S.	4440	15.2	21.5	71	51.8	37.4	139
Basin Index (%)		53			119
SNAKE ABOVE PALISADES
Base Camp	7040	12.2	16.3	75	22.3	19.5	114
Blind Bull Sum	8880	22.9	23.6	97	15.7	17.4	90
Cottonwood Creek	7710	13.6	21.1	64	24.0	24.2	99
East Rim Divide	8010	2.6	10.2	25	10.9	10.7	102
Granite Creek	6770	8.9	15.4	58	19.9	17.2	116
Grassy Lake	7330	13.2	31.3	42	28.7	33.2	86
Gros Ventre Summit	8760	9.3	12.3	76	14.3	11.8	121
Lewis Lake Divide	7880	25.7	29.6	87	35.9	31.6	114
Loomis Park	8240	7.7	15.0	51	15.4	16.4	94
Phillips Bench	8170	17.4	25.6	68	25.9	26.0	100
Salt River Summit	7630	-M	13.0	*	14.9	14.9	100
Spring Creek Divide	9020	20.8	23.9	87	23.3	22.6	103
Togwotee Pass	9590	19.7	22.8	86	26.8	23.8	113
Two Ocean Plateau	9240	31.7	27.8	114	30.4	25.2	121
Willow Creek	8060	17.5	28.8	61	29.2	31.2	94
Basin Index (%)		73			104
HENRYS FORK, TETON, WILLOW, BLACKFOOT, PORTNEUF
Black Bear	8160	24.6	36.8	67	32.0	34.7	92
Crab Creek	6870	4.0	12.8	31	13.9	14.6	95
Grassy Lake	7330	13.2	31.3	42	28.7	33.2	86
Island Park	6300	3.3	14.1	23	13.3	17.2	77
Lewis Lake Divide	7880	25.7	29.6	87	35.9	31.6	114
Madison Plateau	7710	15.2	21.5	71	24.3	23.0	106
Phillips Bench	8170	17.4	25.6	68	25.9	26.0	100
Pine Creek Pass	6710	0.1	14.0	1	17.5	20.9	84
Sedgwick Peak	7800	8.2	18.8	44	19.6	19.6	100
Sheep Mtn.	6630	0.0	12.2	0	12.8	15.1	85
Slug Creek Divide	7240	3.3	14.2	23	19.4	19.4	100
Somsen Ranch	6830	0.0	11.8	0	15.9	16.0	99
Whiskey Creek	6790	9.1	15.0	61	20.3	18.7	109
White Elephant	7670	13.8	25.6	54	23.7	27.0	88
Wildhorse Divide	6480	3.2	15.2	21	18.3	18.8	97
Basin Index (%)		47			96
BIG AND LITTLE WOOD BASINS
Camas Creek Divide	5720	0.0	11.0₍₂₈₎	0	15.7	16.8₍₂₈₎	93
Chocolate Gulch	6310	3.2	11.9₍₂₇₎	27	15.5	14.1₍₂₇₎	110
Dollarhide Summit	8390	24.8	22.8	109	20.7	24.0	86
Galena	7470	10.7	15.2	70	18.2	16.7	109
Galena Summit	8790	17.7	18.7	95	18.7	18.8	99
Garfield R.S.	6580	0.0	8.2	0	14.2	11.8	120
Hyndman	7590	6.2	11.8	53	16.2	14.3	113
Lost-Wood Divide	7870	14.1	18.3	77	20.0	19.2	104
Swede Peak	7640	4.9	13.4	37	16.9	15.5	109
Vienna Mine	8930	28.5	30.3	94	30.4	30.0	101
Basin Index (%)		68			103
BIG AND LITTLE LOST BASINS
Bear Canyon	7920	11.1	13.7	81	20.6	16.1	128
Hilts Creek	8090	9.0	12.0	75	14.9	12.2	122
Lost-Wood Divide	7870	14.1	18.3	77	20.0	19.2	104
Meadow Lake	9190	14.2	14.7	97	18.4	15.6	118
Moonshine	7490	3.9	8.9	44	13.1	12.0	109
Stickney Mill	7440	2.9	7.6	38	13.3	10.1	132
Basin Index (%)		73			118
RAFT, GOOSE, SALMON FALLS, BRUNEAU
Bear Creek	8090	0.3	18.0	2	13.6	20.2	67
Big Bend	6890	0.0	8.0	0	8.8	9.8	90
Bostetter R.S.	7530	-M	15.2	*	14.8	16.8	88
Howell Canyon	8010	13.8	25.2	55	23.8	26.2	91
Magic Mountain	6940	1.8	18.3	10	13.3	20.8	64
Pole Creek R.S.	8370	10.3	18.5	56	10.8	10.6	102
Seventysix Creek	7360	0.0	9.0	0	10.0	13.1	76
Wilson Creek	7110	0.0	12.6	0	13.0	16.2	80
Basin Index (%)		24			81
WEISER, PAYETTE, BOISE
Atlanta Summit	7570	18.3	28.0	65	29.0	30.8	94
Banner Summit	7040	15.5	25.4	61	27.4	29.2	94
Bear Basin	5350	7.0	16.6	42	21.7	23.7	92
Bear Saddle	6170	5.4	20.3	27	16.9	24.4	69
Big Creek Summit	6550	17.7	30.8	57	30.0	32.5	92
Brundage Reservoir	6280	18.7	29.8	63	35.2	35.8	98
Cozy Cove	5410	0.1	13.0	1	19.9	22.0	90
Deadwood Summit	6990	31.1	39.1	80	38.5	41.8	92
Dollarhide Summit	8390	24.8	22.8	109	20.7	24.0	86
Graham Guard Sta.	5690	0.0	12.4	0	21.1	21.5	98
Jackson Peak	7060	14.6	26.4	55	27.9	30.9	90
Mores Creek Summit	6090	8.4	30.6	27	25.9	34.4	75
Prairie	4800	0.0	0.0	*	12.4	15.0	83
Secesh Summit	6530	20.3	30.0	68	35.8	27.6	130
Puhi Flat	6240	9.6	21.9	44	30.2	30.2	100
Trinity Mtn.	7790	21.4	34.4	62	30.3	36.4	83
Vienna Mine	8930	28.5	30.3	94	30.4	30.0	101
West Branch	5590	7.8	21.0	37	28.0	29.2	96
Basin Index (%)		58			93
OWYHEE MALHEUR
Big Bend	6890	0.0	8.0	0	8.8	9.8	90
Blue Mountain Spring	5880	1.1	15.8	7	18.8	23.2	81
Fawn Creek	7040	-M	15.0	*	13.3	19.6	68
Jack Creek Upper	7380	-M	15.8	*	12.9	17.6	73
Jacks Peak	8440	-M	N/A	*	15.0	22.5	67
Lake Creek R.S.	5250	0.0	8.6	0	13.7	17.1	80
Laurel Draw	6680	0.0	7.7	0	13.0	16.0	81
Mud Flat	5750	0.0	3.0	0	6.4	10.2	63
South Mtn.	6650	0.0	13.6	0	16.9	21.7	78
Taylor Canyon	6320	0.1	0.8	12	7.6	7.6	100
Basin Index (%)		2			76
GRAND RONDE, POWDER, BURNT, IMNAHA
Aneroid Lake #2	7430	11.0	21.8	50	25.9	29.4	88
Beaver Reservoir	5140	0.0	9.5	0	15.8	19.6	81
Bourne	5850	0.0	14.4	0	16.7	21.2	79
County Line	4840	0.5	0.0	*	11.6	13.4	87
Eilertson Meadows	5510	0.2	7.0	3	18.8	19.8	95
Gold Center	5400	0.0	6.1	0	12.8	17.6	73
Moss Springs	5760	13.5	24.6	55	31.0	34.8	89
Mt. Howard	7840	8.2	15.2	54	21.1	26.2	81
Schneider Meadows	5400	10.9	25.4	43	25.6	35.2	73
Taylor Green	5730	2.2	19.6	11	18.6	27.0	69
Wolf Creek	5730	0.0	15.5	0	13.5	20.0	68
Basin Index (%)		29			80
CLEARWATER AND SALMON
Banner Summit	7040	15.5	25.4	61	27.4	29.2	94
Beagle Springs	8880	5.4	8.9	61	10.8	8.9	121
Bear Basin	5350	7.0	16.6	42	21.7	23.7	92
Big Creek Summit	6550	17.7	30.8	57	30.0	32.5	92
Brundage Reservoir	6280	18.7	29.8	63	35.2	35.8	98
Cool Creek	6320	33.3	42.8	78	49.3	52.0	95
Crater Meadows	5960	40.1	47.4	85	58.3	50.8	115
Darkhorse Lake	8930	27.6	28.6	97	29.0	26.2	111
Deadwood Summit	6990	31.1	39.1	80	38.5	41.8	92
Elk Butte	5680	18.3	33.9	54	35.8	42.2	85
Galena	7470	10.7	15.2	70	18.2	16.7	109
Galena Summit	8790	17.7	18.7	95	18.7	18.8	99
Hemlock Butte	5800	28.3	44.3	64	41.0	N/A	*
Hoodoo Basin	6060	42.3	37.4	113	52.0	45.7	114
Lemhi Ridge	8080	5.4	9.8	55	9.7	12.0	81
Lolo Pass	5280	20.5	27.4	75	38.8	33.8	115
Lost Lake	6090	38.5	50.9	76	65.4	57.0	115
Meadow Lake	9190	14.2	14.7	97	18.4	15.6	118
Mill Creek Summit	8780	20.5	18.3₍₂₉₎	112	17.0	18.0	94
Moonshine	7490	3.9	8.9	44	13.1	12.0	109
Moose Creek	6170	10.4	15.4	68	20.9	19.3	108
Morgan Creek	7620	6.3	9.9	64	13.4	14.3	94
Mountain Meadows	6340	15.5	21.0	74	24.7	26.6	93
Nez Perce Camp	5670	10.5	12.9	81	25.7	19.9	129
Saddle Mtn.	7890	21.6	22.8	95	22.3	21.4	104
Savage Pass	6170	22.3	25.7	87	35.6	30.6	116
Secesh Summit	6530	20.3	30.0	68	35.8	27.6	130
Shanghi Summit	4590	7.5	23.0	33	41.8	39.9	105
Sherwin	3190	0.4	6.6₍₂₉₎	6	29.4	27.6₍₂₉₎	107
Puhi Flat	6240	9.6	21.9	44	30.2	30.2	100
Twelvemile Creek	5530	6.3	16.4	38	42.4	33.3	127
Twin Lakes	6380	35.6	38.6	92	54.2	45.9	118
Vienna Mine	8930	28.5	30.3	94	30.4	30.0	101
West Branch	5590	7.8	21.0	37	28.0	29.2	96
Basin Index (%)		73			106
UMATILLA, WALLA WALLA, WILLOW
Arbuckle Mtn	5770	0.0	17.2	0	17.6	23.6	75
Bowman Springs	4550	0.1	4.4	2	14.3	16.9	85
Emigrant Springs	3790	0.0	0.2	0*	19.7	23.2	85
High Ridge	4900	5.9	24.8	24	33.5	38.0	88
Touchet	5520	11.0	28.4	39	44.4	43.3	103
Basin Index (%)		23			89
DESCHUTES, CROOKED, JOHN DAY
Arbuckle Mtn	5770	0.0	17.2	0	17.6	23.6	75
Blue Mountain Spring	5880	1.1	15.8	7	18.8	23.2	81
Cascade Summit	5100	4.8	31.2	15	34.2	48.7	70
Chemult Alternate	4850	0.0	3.5	0	10.9	20.8	52
Derr.	5850	0.1	12.2	1	12.6	19.3	65
Hogg Pass	4800	0.2	21.0₍₁₇₎	1	42.9	54.1₍₁₇₎	79
Irish Taylor	5540	4.5	32.7	14	34.0	49.3	69
Lucky Strike	4970	0.0	5.2	0	15.0	16.6	90
New Crescent Lake	4910	0.0	7.6	0	21.9	30.4	72
Ochoco Meadows	5430	-M	7.4	*	12.2	17.8	69
Starr Ridge	5240	0.0	0.5	0*	9.3	13.4	69
Three Creeks Meadow	5680	0.0	17.1	0	25.7	32.1	80
Tipton	5150	0.0	10.6	0	10.9	15.2	72
Basin Index (%)		6			73
LOWER COLUMBIA, HOOD RIVER
Madison Butte	5150	0.0	1.7	0	8.7	11.6	75
Blazed Alder	3660	6.9	28.2	24	95.4	93.4	102
Clear Lake	3810	0.0	10.6	0	28.2	29.6	95
Greenpoint	3320	0.0	16.6	0	62.7	57.1	110
North Fork	3070	1.9	20.2	9	122.7	115.0	107
Red Hill	4410	14.7	45.2	33	91.3	85.4	107
Basin Index (%)		19			104
WILLAMETTE
Summit Lake	5610	11.0	35.8	31	36.2	52.2	69
Irish Taylor	5540	4.5	32.7	14	34.0	49.3	69
Cascade Summit	5100	4.8	31.2	15	34.2	48.7	70
Roaring River	4960	0.0	26.6	0	40.3	51.2	79
Holland Meadows	4930	0.1	15.8	1	39.3	56.4	70
Mckenzie	4770	1.8	36.0	5	58.0	70.9	82
Hogg Pass	4800	0.2	21.0₍₁₇₎	1	42.9	54.1₍₁₇₎	79
Salt Creek Falls	4220	0.0	19.6	0	38.7	54.3	71
Mud Ridge	4070	6.8	23.3₍₂₉₎	29	54.3	53.6	101
Little Meadows	4020	2.4	27.0	9	77.7	85.8	91
Clear Lake	3810	0.0	10.6	0	28.2	29.6	95
Santiam Jct.	3740	0.0	7.9	0	47.4	56.0	85
Daly Lake	3690	0.1	10.6	1	34.3	60.4	57
Jump Off Joe	3530	0.1	9.4	1	53.9	60.4	89
Peavine Ridge	3420	0.2	9.1	2	45.1	47.3	95
Clackamas Lake	3400	0.0	8.7	0	39.1	42.1	93
Saddle Mountain	3090	0.0	1.0	0	79.8	71.6	111
Railroad Overpass	2680	0.0	0.0	*	30.1	38.7	78
Marion Forks	2590	0.0	8.6	0	53.4	58.6	91
Seine Creek	2070	0.1	0.0	*	62.2	54.3	115
Miller Woods	420	0.0	0.0₍₁₄₎	*	42.8	44.3₍₁₄₎	97
Basin Index (%)		10			85
LEWIS, COWLITZ
June Lake	3440	14.9	40.4	37	133.6	128.9	104
Lone Pine	3940	14.8	37.6	39	77.7	78.0	100
Paradise	5150	36.3	71.4	51	105.8	93.7	113
Pigtail Peak	5800	36.9	50.8	73	68.8	64.4	107
Potato Hill	4480	17.8	29.8	60	51.6	50.8	102
Sheep Canyon	3990	13.4	34.1	39	122.6	105.5	116
Spencer Meadow	3400	8.2	29.9	27	77.2	77.2	100
Spirit Lake	3520	0.4	2.8	14	77.3	68.6	113
Lost Horse	5100	-M	18.2	*	-M	24.2	*
Surprise Lakes	4280	22.2	46.4	48	87.4	82.8	106
Basin Index (%)		48			107
WHITE, GREEN, CEDAR, SKYKOMISH, SNOQUALMI, BAKER, SKAGIT
Corral Pass	5810	27.1	34.5₍₂₉₎	79	50.1	44.5₍₂₉₎	113
Meadows Pass	3230	12.9	26.8₍₂₇₎	48	95.6	74.8₍₂₇₎	128
Mount Gardner	2930	1.4	13.1₍₂₇₎	11	90.0	74.3₍₂₇₎	121
Tinkham Creek	3000	10.9	26.7₍₂₇₎	41	95.9	80.1₍₂₇₎	120
Cougar Mountain	3210	3.8	13.4	28	87.3	71.1	123
Olallie Meadows	4010	23.2	48.2	48	108.0	96.2	112
Rainy Pass	4880	33.4	36.6	91	57.6	45.7	126
Sawmill Ridge	4640	9.7	38.4₍₁₄₎	25	62.0	54.9₍₁₄₎	113
Stampede Pass	3850	15.1	36.6	41	74.2	67.6	110
Thunder Basin	4310	23.9	29.8	80	75.0	54.8	137
Basin Index (%)		53			120

-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.

If the Basin Index (%) percent value is flagged as potentially invalid,
care should be taken to evaluate if the value is representative
of conditions in the basin.

The SNOW WATER EQUIVALENT represents the depth of water in the snowpack, if the
snowpack were melted, expressed in inches.

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.