Colorado River below Shadow Mountain Reservoir, Co.
USGS Site No: 09015000 • Colorado River • Grand County, CO
Colorado River below Shadow Mountain Reservoir, Co. on the Colorado River is currently at 442 cfs (Very High — 96th percentile for this date) . Gage height: 2.81 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 | 21 | |
| 25th | Low threshold | 25 | |
| 50th (Median) | Normal (median) | 37 | |
| 75th | High threshold | 38 | |
| 95th | Very High threshold | 416 |
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 | 458 | — |
| May 27, 2026 | 381 | — |
| May 26, 2026 | 53 | — |
| May 25, 2026 | 24 | — |
| May 24, 2026 | 23 | — |
| May 23, 2026 | 23 | — |
| May 22, 2026 | 23 | — |
| May 21, 2026 | 23 | — |
| May 20, 2026 | 112 | — |
| May 19, 2026 | 23 | — |
| May 18, 2026 | 44 | — |
| May 17, 2026 | 134 | — |
| May 16, 2026 | 138 | — |
| May 15, 2026 | 241 | — |
| Apr 20, 2026 | 67 | — |
| Apr 19, 2026 | 128 | — |
| Apr 18, 2026 | 120 | — |
| Apr 17, 2026 | 151 | — |
| Apr 16, 2026 | 147 | — |
| Apr 15, 2026 | 163 | — |
| Apr 14, 2026 | 162 | — |
| Apr 13, 2026 | 167 | — |
| Apr 12, 2026 | 109 | — |
| Apr 11, 2026 | 102 | — |
| Apr 10, 2026 | 128 | — |
| Apr 9, 2026 | 107 | — |
| Apr 8, 2026 | 107 | — |
| Apr 7, 2026 | 165 | — |
| Apr 6, 2026 | 163 | — |
| Apr 5, 2026 | 115 | — |
Station Information
- USGS Site No
- 09015000
- State
- CO
- County
- Grand County
- Coordinates
- 40.2052, -105.8376
- Drainage Area
- 190 mi²
- Datum (ft)
- 8,326.5
- HUC Code
- 14010001
Recent Extremes
- Max discharge
-
1,140 cfsJun 2, 2025
- Min discharge
-
21 cfsMar 12, 2026
Computed from the local daily-values archive.
Nearby Gauges
-
Colorado River at Windy Gap, Near Granby, Co.Very High11.1 mi · 170 cfs
-
Michigan River Near Cameron Pass, COVery High20.2 mi · 18 cfs
-
Fourmile Creek at Logan Mill Road Near Crisman, COUnknown27.4 mi · 7 cfs
-
Fourmile Canyon Creek Near Sunshine, COUnknown27.8 mi · 0 cfs
-
Fourmile Creek at Orodell, COVery High29.9 mi · 5 cfs