Upper San Juan HUC8 14080101

A 8,886 km² sub-basin of the Upper Colorado region in CO, NM. Drought coverage is from the US Drought Monitor (map of 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score

Moderate

Drought index

227

Severe

Area in D2+

32.92%

0% exceptional (D4)

Gauges below normal

17%

of 6 reporting

Median flow

467%

p86 of record

Water assets

1,473

65 springs · 408 wells

USGS gauges (10)

SAN JUAN RIVER NEAR ARCHULETA, NM
09355500272 cfsp8 · much below normal
LOS PINOS RIVER AT LA BOCA, CO.
0935450088 cfsp43 · normal
LOS PINOS RIVER NEAR IGNACIO, CO
0935380047 cfsp82 · above normal
SAN JUAN RIVER NEAR CARRACAS, CO.
09346400776 cfsp90 · above normal
SAN JUAN RIVER AT PAGOSA SPRINGS, CO
09342500658 cfsp93 · much above normal
VALLECITO CREEK NEAR BAYFIELD, CO.
09352900385 cfsp94 · much above normal
LOS PINOS R ABV VALLECITO RES NR BAYFIELD, CO
09352800468 cfsno long-term record
CITIZENS DITCH AT BLOOMFIELD, NM
0935560025 cfsno long-term record
SAN JUAN RIVER AT BLOOMFIELD, NM
09357000193 cfsno long-term record
SAN JUAN R AT BOLACK RANCH BRDG NR FARMINGTON NM
09357700293 cfsno long-term record

Recent conditions

Date	DSCI	D2+ %	Gauges low	Flow pct
2026-10-18	227	32.92	1/6	p86
2026-10-17	227	32.92	1/6	p88
2026-10-16	227	32.92	1/6	p90
2026-10-15	230	33.31	1/6	p92
2026-10-14	230	33.31	1/6	p90
2026-10-13	230	33.31	2/6	p74
2026-10-12	230	33.31	2/6	p70
2026-10-11	230	33.31	2/6	p58
2026-10-10	230	33.31	2/6	p56
2026-10-09	230	33.31	2/6	p58
2026-10-08	245	47.5	2/6	p63
2026-10-07	245	47.5	2/6	p69
2026-10-06	245	47.5	2/6	p67
2026-10-05	245	47.5	2/6	p66

Top water assets

View on the map All Upper Colorado sub-basins