Lamar River near Tower Ranger Station Ynp
USGS Site No: 06188000 • Lamar River • Park County, WY
Lamar River near Tower Ranger Station Ynp on the Lamar River is currently at 4,060 cfs (Very High — 196th percentile for this date) . Gage height: 4.84 ft.
Reading from
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 | 127 | |
| 25th | Low threshold | 146 | |
| 50th (Median) | Normal (median) | 179 | |
| 75th | High threshold | 250 | |
| 95th | Very High threshold | 365 |
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.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 4,590 | — |
| May 27, 2026 | 4,120 | — |
| May 26, 2026 | 3,400 | — |
| May 25, 2026 | 2,760 | — |
| May 24, 2026 | 2,140 | — |
| May 23, 2026 | 1,790 | — |
| May 22, 2026 | 1,780 | — |
| May 21, 2026 | 1,940 | — |
| May 20, 2026 | 1,920 | — |
| May 19, 2026 | 2,050 | — |
| May 18, 2026 | 2,380 | — |
| May 17, 2026 | 2,790 | — |
| May 16, 2026 | 3,380 | — |
| May 15, 2026 | 3,980 | — |
| Apr 20, 2026 | 883 | — |
| Apr 19, 2026 | 828 | — |
| Apr 18, 2026 | 847 | — |
| Apr 17, 2026 | 921 | — |
| Apr 16, 2026 | 1,090 | — |
| Apr 15, 2026 | 1,140 | — |
| Apr 14, 2026 | 1,300 | — |
| Apr 13, 2026 | 1,590 | — |
| Apr 12, 2026 | 1,810 | — |
| Apr 11, 2026 | 1,860 | — |
| Apr 10, 2026 | 1,600 | — |
| Apr 9, 2026 | 1,370 | — |
| Apr 8, 2026 | 1,220 | — |
| Apr 7, 2026 | 1,040 | — |
| Apr 6, 2026 | 872 | — |
| Apr 5, 2026 | 764 | — |
Station Information
- USGS Site No
- 06188000
- State
- WY
- County
- Park County
- Coordinates
- 44.9282, -110.3943
- Drainage Area
- 668 mi²
- Datum (ft)
- 6,000.0
- HUC Code
- 10070001
Flood Stage Thresholds
- Flood Stage
- 15.0 ft
- Moderate Flood
- 16.0 ft
- Major Flood
- 17.0 ft
Currently 10.16 ft below flood stage.
Recent Extremes
- Max discharge
-
7,300 cfsJun 2, 2025
- Min discharge
-
83 cfsDec 18, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Boiling River at Mammoth,ynpNormal15.0 mi · 25 cfs
-
Gardner River Near Mammoth, YnpVery High15.2 mi · 469 cfs
-
Soda Butte Creek at Park Bndry at Silver GateVery High19.9 mi · 445 cfs
-
Tantalus Creek at Norris Junction, YnpLow20.7 mi · 3 cfs
-
Yellowstone River at Corwin Springs MountVery High23.3 mi · 8,980 cfs