Red Rock River below Lima Reservoir near Monida Mount

USGS Site No: 06012500 • Red Rock River • Beaverhead County, MT

Red Rock River below Lima Reservoir near Monida Mount on the Red Rock River is currently at 490 cfs (Normal — 48th percentile for this date) . Gage height: 3.24 ft.

Reading from

490
CFS Discharge
3.24
Gage Height (ft)
Normal
Flow Condition
N/A
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 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 244
25th Low threshold 378
50th (Median) Normal (median) 499 Today: 490 cfs
75th High threshold 590
95th Very High threshold 727

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.

765 382 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 490 —
May 27, 2026 461 —
May 26, 2026 445 —
May 25, 2026 356 —
May 24, 2026 147 —
May 23, 2026 119 —
May 22, 2026 92 —
May 21, 2026 75 —
May 20, 2026 66 —
May 19, 2026 49 —
May 18, 2026 49 —
May 17, 2026 49 —
May 16, 2026 49 —
May 15, 2026 42 —
Apr 20, 2026 3 —
Apr 19, 2026 2 —
Apr 18, 2026 2 —
Apr 17, 2026 2 —
Apr 16, 2026 2 —
Apr 15, 2026 3 —
Apr 14, 2026 3 —
Apr 13, 2026 3 —
Apr 12, 2026 3 —
Apr 11, 2026 3 —
Apr 10, 2026 3 —
Apr 9, 2026 3 —
Apr 8, 2026 3 —
Apr 7, 2026 3 —
Apr 6, 2026 3 —
Apr 5, 2026 3 —

Station Information

USGS Site No
06012500
State
MT
County
Beaverhead County
Coordinates
44.6559, -112.3712
Drainage Area
566 mi²
Datum (ft)
6,530.0
HUC Code
10020001
View on USGS NWIS →

Recent Extremes

Max discharge
619 cfs
Jun 10, 2025
Min discharge
2 cfs
Oct 25, 2025

Computed from the local daily-values archive.

Nearby Gauges

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