Lemhi River near Lemhi ID
USGS Site No: 13305000 • Lemhi River • Lemhi County, ID
Lemhi River near Lemhi ID on the Lemhi River is currently at 239 cfs (Normal — 34th percentile for this date) . Gage height: 4.08 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 | 179 | |
| 25th | Low threshold | 225 | |
| 50th (Median) | Normal (median) | 265 | Today: 239 cfs |
| 75th | High threshold | 310 | |
| 95th | Very High threshold | 373 |
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 | 238 | — |
| May 27, 2026 | 237 | — |
| May 26, 2026 | 197 | — |
| May 25, 2026 | 162 | — |
| May 24, 2026 | 139 | — |
| May 23, 2026 | 136 | — |
| May 22, 2026 | 138 | — |
| May 21, 2026 | 150 | — |
| May 20, 2026 | 159 | — |
| May 19, 2026 | 183 | — |
| May 18, 2026 | 200 | — |
| May 17, 2026 | 206 | — |
| May 16, 2026 | 216 | — |
| May 15, 2026 | 233 | — |
| Apr 20, 2026 | 154 | — |
| Apr 19, 2026 | 160 | — |
| Apr 18, 2026 | 165 | — |
| Apr 17, 2026 | 184 | — |
| Apr 16, 2026 | 193 | — |
| Apr 15, 2026 | 192 | — |
| Apr 14, 2026 | 201 | — |
| Apr 13, 2026 | 204 | — |
| Apr 12, 2026 | 203 | — |
| Apr 11, 2026 | 188 | — |
| Apr 10, 2026 | 186 | — |
| Apr 9, 2026 | 194 | — |
| Apr 8, 2026 | 196 | — |
| Apr 7, 2026 | 188 | — |
| Apr 6, 2026 | 187 | — |
| Apr 5, 2026 | 187 | — |
Station Information
- USGS Site No
- 13305000
- State
- ID
- County
- Lemhi County
- Coordinates
- 44.9400, -113.6392
- Drainage Area
- 897 mi²
- Datum (ft)
- 4,899.8
- HUC Code
- 17060204
Flood Stage Thresholds
- Action Stage
- 6.0 ft
- Flood Stage
- 6.5 ft
- Moderate Flood
- 8.5 ft
- Major Flood
- 10.0 ft
Currently 2.42 ft below flood stage.
Recent Extremes
- Max discharge
-
447 cfsJun 1, 2025
- Min discharge
-
75 cfsAug 29, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Lemhi River Near Mcfarland, IDLow10.2 mi · 40 cfs
-
Lemhi River Below L5 Diversion Near Salmon, IDLow15.4 mi · 152 cfs
-
Salmon River at Salmon IDVery High21.0 mi · 4,600 cfs
-
Big Timber Creek above Mouth at Leadore IDVery High21.8 mi · 7 cfs
-
Pahsimeroi River at Ellis IDUnknown26.3 mi · 0 cfs