Boulder Creek at Maxville Mount

USGS Site No: 12330000 • Boulder Creek • Granite County, MT

Boulder Creek at Maxville Mount on the Boulder Creek is currently at 202 cfs (Very High — 134th percentile for this date) . Gage height: 2.70 ft. This station is at or above flood stage.

Reading from

202
CFS Discharge
2.70
Gage Height (ft)
Very High
Flow Condition
FLOOD
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 15
25th Low threshold 20
50th (Median) Normal (median) 24
75th High threshold 29
95th Very High threshold 41

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.

442 221 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 210 —
May 27, 2026 174 —
May 26, 2026 140 —
May 25, 2026 107 —
May 24, 2026 91 —
May 23, 2026 80 —
May 22, 2026 85 —
May 21, 2026 91 —
May 20, 2026 89 —
May 19, 2026 93 —
May 18, 2026 103 —
May 17, 2026 117 —
May 16, 2026 138 —
May 15, 2026 164 —
Apr 20, 2026 43 —
Apr 19, 2026 41 —
Apr 18, 2026 41 —
Apr 17, 2026 43 —
Apr 16, 2026 46 —
Apr 15, 2026 48 —
Apr 14, 2026 49 —
Apr 13, 2026 51 —
Apr 12, 2026 51 —
Apr 11, 2026 42 —
Apr 10, 2026 39 —
Apr 9, 2026 41 —
Apr 8, 2026 41 —
Apr 7, 2026 39 —
Apr 6, 2026 37 —
Apr 5, 2026 36 —

Station Information

USGS Site No
12330000
State
MT
County
Granite County
Coordinates
46.4717, -113.2358
Drainage Area
71 mi²
Datum (ft)
4,750.0
HUC Code
17010202
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
4.4 ft

Recent Extremes

Max discharge
257 cfs
May 30, 2025
Min discharge
5 cfs
Sep 9, 2025

Computed from the local daily-values archive.

Nearby Gauges

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