Gardner River Near Mammoth, Ynp

USGS Site No: 06191000 • Gardner River • Park County, MT

Gardner River Near Mammoth, Ynp on the Gardner River is currently at 469 cfs (Low — 19th percentile for this date) . Gage height: 2.65 ft. This station is at or above flood stage.

Reading from

469
CFS Discharge
2.65
Gage Height (ft)
Low
Flow Condition
FLOOD
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 372
25th Low threshold 527 Today: 469 cfs
50th (Median) Normal (median) 731
75th High threshold 899
95th Very High threshold 1,520

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.

1.4k 697 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 459 —
May 27, 2026 414 —
May 26, 2026 389 —
May 25, 2026 336 —
May 24, 2026 286 —
May 23, 2026 270 —
May 22, 2026 275 —
May 21, 2026 283 —
May 20, 2026 290 —
May 19, 2026 311 —
May 18, 2026 337 —
May 17, 2026 385 —
May 16, 2026 431 —
May 15, 2026 479 —
Apr 20, 2026 201 —
Apr 19, 2026 191 —
Apr 18, 2026 188 —
Apr 17, 2026 196 —
Apr 16, 2026 216 —
Apr 15, 2026 208 —
Apr 14, 2026 213 —
Apr 13, 2026 226 —
Apr 12, 2026 231 —
Apr 11, 2026 220 —
Apr 10, 2026 213 —
Apr 9, 2026 207 —
Apr 8, 2026 210 —
Apr 7, 2026 198 —
Apr 6, 2026 185 —
Apr 5, 2026 173 —

Station Information

USGS Site No
06191000
State
MT
County
Park County
Coordinates
44.9923, -110.6910
Drainage Area
199 mi²
Datum (ft)
5,624.0
HUC Code
10070001
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
5.5 ft

Recent Extremes

Max discharge
641 cfs
Jun 2, 2025
Min discharge
66 cfs
Jan 24, 2026

Computed from the local daily-values archive.

Nearby Gauges

Related