Middle Fork Rock Creek near Philipsburg Mount

USGS Site No: 12332000 • Middle Fork Rock Creek • Granite County, MT

Middle Fork Rock Creek near Philipsburg Mount on the Middle Fork Rock Creek is currently at 489 cfs (Very High — 145th percentile for this date) . Gage height: 3.02 ft.

Reading from

489
CFS Discharge
3.02
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 34
25th Low threshold 38
50th (Median) Normal (median) 44
75th High threshold 50
95th Very High threshold 82

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.

1.1k 567 0 cfs Mar 16 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 496 —
May 27, 2026 470 —
May 26, 2026 397 —
May 25, 2026 335 —
May 24, 2026 288 —
May 23, 2026 258 —
May 22, 2026 265 —
May 21, 2026 281 —
May 20, 2026 277 —
May 19, 2026 305 —
May 18, 2026 345 —
May 17, 2026 401 —
May 16, 2026 462 —
May 15, 2026 519 —
Apr 17, 2026 250 —
Apr 10, 2026 294 —
Apr 7, 2026 237 —
Apr 5, 2026 186 —
Apr 3, 2026 196 —
Apr 1, 2026 215 —
Mar 31, 2026 220 —
Mar 30, 2026 235 —
Mar 29, 2026 231 —
Mar 28, 2026 232 —
Mar 27, 2026 241 —
Mar 26, 2026 275 —
Mar 24, 2026 118 —
Mar 22, 2026 115 —
Mar 19, 2026 58 —
Mar 16, 2026 47 —

Station Information

USGS Site No
12332000
State
MT
County
Granite County
Coordinates
46.1846, -113.5016
Drainage Area
121 mi²
Datum (ft)
5,444.1
HUC Code
17010202
View on USGS NWIS →

Recent Extremes

Max discharge
696 cfs
May 12, 2025
Min discharge
28 cfs
Sep 29, 2025

Computed from the local daily-values archive.

Nearby Gauges

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