Grand River at Portland, MI
USGS Site No: 04114000 • Grand River • Ionia County, MI
Grand River at Portland, MI on the Grand River is currently at 965 cfs (High — 76th percentile for this date) . Gage height: 5.93 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 | 250 | |
| 25th | Low threshold | 316 | |
| 50th (Median) | Normal (median) | 429 | |
| 75th | High threshold | 904 | |
| 95th | Very High threshold | 1,770 | Today: 965 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 29, 2026 | 1,050 | — |
| May 28, 2026 | 1,160 | — |
| May 27, 2026 | 1,250 | — |
| May 26, 2026 | 1,370 | — |
| May 25, 2026 | 1,240 | — |
| May 24, 2026 | 1,020 | — |
| May 23, 2026 | 888 | — |
| May 22, 2026 | 884 | — |
| May 21, 2026 | 972 | — |
| May 20, 2026 | 1,050 | — |
| May 19, 2026 | 1,060 | — |
| May 18, 2026 | 998 | — |
| May 17, 2026 | 1,060 | — |
| May 16, 2026 | 1,080 | — |
| May 15, 2026 | 1,100 | — |
| Apr 21, 2026 | 5,100 | — |
| Apr 20, 2026 | 6,400 | — |
| Apr 19, 2026 | 7,500 | — |
| Apr 18, 2026 | 7,600 | — |
| Apr 17, 2026 | 7,420 | — |
| Apr 16, 2026 | 5,920 | — |
| Apr 15, 2026 | 4,170 | — |
| Apr 14, 2026 | 2,120 | — |
| Apr 13, 2026 | 2,260 | — |
| Apr 12, 2026 | 2,450 | — |
| Apr 11, 2026 | 2,810 | — |
| Apr 10, 2026 | 3,280 | — |
| Apr 9, 2026 | 3,940 | — |
| Apr 8, 2026 | 5,130 | — |
| Apr 7, 2026 | 6,270 | — |
Station Information
- USGS Site No
- 04114000
- State
- MI
- County
- Ionia County
- Coordinates
- 42.8564, -84.9122
- Drainage Area
- 1,385 mi²
- Datum (ft)
- 704.5
- HUC Code
- 04050004
Flood Stage Thresholds
- Action Stage
- 11.0 ft
- Flood Stage
- 12.0 ft
- Moderate Flood
- 14.0 ft
- Major Flood
- 16.0 ft
Currently 6.07 ft below flood stage.
Recent Extremes
- Max discharge
-
7,950 cfsApr 5, 2026
- Min discharge
-
160 cfsOct 3, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Looking Glass River Near Eagle, MINormal8.0 mi · 126 cfs
-
Grand River at Ionia, MIHigh11.3 mi · 1,850 cfs
-
Grand River at Lansing, MIHigh19.5 mi · 831 cfs
-
Maple River at Maple Rapids, MINormal20.7 mi · 177 cfs
-
Quaker Brook at State Highway M-66 Near Nashville, MILow22.0 mi · 6 cfs