Cowlitz River Near Kosmos, WA
USGS Site No: 14233500 • Cowlitz River • Lewis County, WA
Cowlitz River Near Kosmos, WA on the Cowlitz River is currently at 3,740 cfs (Very Low — 10th percentile for this date) . Gage height: 0.00 ft.
Reading from
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 | 3,820 | Today: 3,740 cfs |
| 25th | Low threshold | 5,170 | |
| 50th (Median) | Normal (median) | 6,710 | |
| 75th | High threshold | 8,970 | |
| 95th | Very High threshold | 15,000 |
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 | 3,270 | — |
| May 27, 2026 | 3,200 | — |
| May 26, 2026 | 3,400 | — |
| May 25, 2026 | 3,670 | — |
| May 24, 2026 | 3,800 | — |
| May 23, 2026 | 3,790 | — |
| May 22, 2026 | 3,700 | — |
| May 21, 2026 | 3,660 | — |
| May 20, 2026 | 3,690 | — |
| May 19, 2026 | 3,840 | — |
| May 18, 2026 | 4,090 | — |
| May 17, 2026 | 4,530 | — |
| May 16, 2026 | 4,610 | — |
| May 15, 2026 | 4,750 | — |
| Apr 20, 2026 | 4,040 | — |
| Apr 19, 2026 | 3,990 | — |
| Apr 18, 2026 | 4,060 | — |
| Apr 17, 2026 | 4,270 | — |
| Apr 16, 2026 | 4,630 | — |
| Apr 15, 2026 | 5,070 | — |
| Apr 14, 2026 | 4,930 | — |
| Apr 13, 2026 | 4,960 | — |
| Apr 12, 2026 | 4,810 | — |
| Apr 11, 2026 | 4,690 | — |
| Apr 10, 2026 | 4,590 | — |
| Apr 9, 2026 | 4,690 | — |
| Apr 8, 2026 | 4,890 | — |
| Apr 7, 2026 | 4,960 | — |
| Apr 6, 2026 | 4,460 | — |
| Apr 5, 2026 | 4,330 | — |
Station Information
- USGS Site No
- 14233500
- State
- WA
- County
- Lewis County
- Coordinates
- 46.4662, -122.1090
- Drainage Area
- 1,040 mi²
- Datum (ft)
- 759.3
- HUC Code
- 17080005
Recent Extremes
- Max discharge
-
50,300 cfsDec 11, 2025
- Min discharge
-
524 cfsOct 4, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Cowlitz River at Randle, WALow8.5 mi · 2,420 cfs
-
Mineral Creek Near Mineral, WALow19.3 mi · 94 cfs
-
Nisqually River Near National, WAVery Low19.8 mi · 541 cfs
-
Cowlitz River at Packwood, WALow22.8 mi · 1,730 cfs
-
Muddy River Below Clear Creek Near Cougar, WAVery Low27.5 mi · 281 cfs