Colorado River Above Imperial Dam, AZ-CA
USGS Site No: 09429490 • Colorado River • Imperial County, CA
Colorado River Above Imperial Dam, AZ-CA on the Colorado River is currently at 7,924 cfs (High — 77th percentile for this date) . Gage height: 12.58 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 | 5,090 | |
| 25th | Low threshold | 5,610 | |
| 50th (Median) | Normal (median) | 6,390 | |
| 75th | High threshold | 6,910 | |
| 95th | Very High threshold | 19,200 | Today: 7,924 cfs |
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 | 9,530 | — |
| May 27, 2026 | 9,170 | — |
| May 26, 2026 | 8,920 | — |
| May 25, 2026 | 8,300 | — |
| May 24, 2026 | 7,430 | — |
| May 23, 2026 | 8,540 | — |
| May 22, 2026 | 9,860 | — |
| May 21, 2026 | 9,890 | — |
| May 20, 2026 | 9,840 | — |
| May 19, 2026 | 9,630 | — |
| May 18, 2026 | 9,110 | — |
| May 17, 2026 | 7,000 | — |
| May 16, 2026 | 7,410 | — |
| May 15, 2026 | 8,280 | — |
| Apr 20, 2026 | 9,120 | — |
| Apr 19, 2026 | 7,350 | — |
| Apr 18, 2026 | 8,230 | — |
| Apr 17, 2026 | 9,860 | — |
| Apr 16, 2026 | 10,100 | — |
| Apr 15, 2026 | 9,810 | — |
| Apr 14, 2026 | 9,430 | — |
| Apr 13, 2026 | 9,280 | — |
| Apr 12, 2026 | 7,620 | — |
| Apr 11, 2026 | 7,470 | — |
| Apr 10, 2026 | 8,790 | — |
| Apr 9, 2026 | 9,050 | — |
| Apr 8, 2026 | 8,990 | — |
| Apr 7, 2026 | 9,430 | — |
| Apr 6, 2026 | 9,420 | — |
| Apr 5, 2026 | 7,330 | — |
Station Information
- USGS Site No
- 09429490
- State
- CA
- County
- Imperial County
- Coordinates
- 32.8849, -114.4681
- Drainage Area
- 188,500 mi²
- Datum (ft)
- 75.0
- HUC Code
- 15030104
Flood Stage Thresholds
- Action Stage
- 13.0 ft
- Flood Stage
- 20.0 ft
- Moderate Flood
- 25.0 ft
- Major Flood
- 32.0 ft
Currently 7.42 ft below flood stage.
Recent Extremes
- Max discharge
-
10,300 cfsMar 26, 2026
- Min discharge
-
2,680 cfsDec 6, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
All-American Canal near Imperial Dam, CA-AZHigh1.2 mi · 7,750 cfs
-
Colorado River Below Imperial Dam, AZ-CANormal1.2 mi · 242 cfs
-
Gila Gravity Main Canal at Imperial Dam, AZ-CANormal1.4 mi · 762 cfs
-
Reservation Main Canal Near Yuma, AZVery Low5.4 mi · 18 cfs
-
Colorado River Below Laguna Dam, AZ-CALow5.7 mi · 310 cfs