Colorado River Below Imperial Dam, AZ-CA
USGS Site No: 09429500 • Colorado River • Imperial County, CA
Colorado River Below Imperial Dam, AZ-CA on the Colorado River is currently at 242 cfs (Low — 22th percentile for this date) . Gage height: 16.00 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 | 0 | |
| 25th | Low threshold | 304 | Today: 242 cfs |
| 50th (Median) | Normal (median) | 396 | |
| 75th | High threshold | 422 | |
| 95th | Very High threshold | 0 |
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 | 282 | — |
| May 27, 2026 | 276 | — |
| May 26, 2026 | 276 | — |
| May 25, 2026 | 276 | — |
| May 24, 2026 | 278 | — |
| May 23, 2026 | 293 | — |
| May 22, 2026 | 263 | — |
| May 21, 2026 | 338 | — |
| May 20, 2026 | 163 | — |
| May 19, 2026 | 193 | — |
| May 18, 2026 | 213 | — |
| May 17, 2026 | 242 | — |
| May 16, 2026 | 272 | — |
| May 15, 2026 | 269 | — |
| Apr 20, 2026 | 878 | — |
| Apr 19, 2026 | 929 | — |
| Apr 18, 2026 | 946 | — |
| Apr 17, 2026 | 938 | — |
| Apr 16, 2026 | 979 | — |
| Apr 15, 2026 | 1,060 | — |
| Apr 14, 2026 | 1,080 | — |
| Apr 13, 2026 | 1,060 | — |
| Apr 12, 2026 | 1,050 | — |
| Apr 11, 2026 | 1,040 | — |
| Apr 10, 2026 | 1,030 | — |
| Apr 9, 2026 | 1,120 | — |
| Apr 8, 2026 | 1,210 | — |
| Apr 7, 2026 | 1,210 | — |
| Apr 6, 2026 | 1,250 | — |
| Apr 5, 2026 | 1,200 | — |
Station Information
- USGS Site No
- 09429500
- State
- CA
- County
- Imperial County
- Coordinates
- 32.8676, -114.4721
- Drainage Area
- 188,500 mi²
- Datum (ft)
- 133.2
- HUC Code
- 15030107
Recent Extremes
- Max discharge
-
2,860 cfsAug 27, 2025
- Min discharge
-
89 cfsOct 23, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
All-American Canal near Imperial Dam, CA-AZNormal0.5 mi · 7,750 cfs
-
Colorado River Above Imperial Dam, AZ-CALow1.2 mi · 7,924 cfs
-
Gila Gravity Main Canal at Imperial Dam, AZ-CALow1.3 mi · 762 cfs
-
Reservation Main Canal Near Yuma, AZLow4.2 mi · 18 cfs
-
Colorado River Below Laguna Dam, AZ-CAVery Low4.6 mi · 310 cfs