South Fork Sun River Near Augusta Mount

USGS Site No: 06079000 • South Fork Sun River • Lewis and Clark County, MT

South Fork Sun River Near Augusta Mount on the South Fork Sun River is currently at 2,350 cfs (Very High — 95th percentile for this date) . Gage height: 4.85 ft.

Reading from

2,350
CFS Discharge
4.85
Gage Height (ft)
Very High
Flow Condition
N/A
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile Label CFS Threshold Today's Flow
10th Very Low threshold 53
25th Low threshold 57
50th (Median) Normal (median) 101
75th High threshold 121
95th Very High threshold 0

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

2.6k 1.3k 0 cfs Apr 5 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 2,370 —
May 27, 2026 1,970 —
May 26, 2026 1,490 —
May 25, 2026 1,070 —
May 24, 2026 746 —
May 23, 2026 625 —
May 22, 2026 619 —
May 21, 2026 652 —
May 20, 2026 681 —
May 19, 2026 728 —
May 18, 2026 828 —
May 17, 2026 973 —
May 16, 2026 1,180 —
May 15, 2026 1,510 —
Apr 20, 2026 510 —
Apr 19, 2026 485 —
Apr 18, 2026 509 —
Apr 17, 2026 555 —
Apr 16, 2026 611 —
Apr 15, 2026 660 —
Apr 14, 2026 680 —
Apr 13, 2026 708 —
Apr 12, 2026 712 —
Apr 11, 2026 598 —
Apr 10, 2026 528 —
Apr 9, 2026 503 —
Apr 8, 2026 489 —
Apr 7, 2026 463 —
Apr 6, 2026 406 —
Apr 5, 2026 395 —

Station Information

USGS Site No
06079000
State
MT
County
Lewis and Clark County
Coordinates
47.6286, -112.8658
Drainage Area
251 mi²
Datum (ft)
4,730.0
HUC Code
10030104
View on USGS NWIS →

Recent Extremes

Max discharge
2,370 cfs
May 28, 2026
Min discharge
44 cfs
Oct 11, 2025

Computed from the local daily-values archive.

Nearby Gauges

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