Grand River At Portland, Mi Realtime Data
GRAND RIVER AT PORTLAND, MI
Realtime Data • Report • Conditions
438
Discharge (cfs)
5.2
Gauge Height (ft)
Streamflow discharge was last observed at 438 cfs, and a gauge height of 5.24 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 493 .
Weather today, Tomorrow,
The river's major constituents include agricultural runoff, urban stormwater runoff, and treated wastewater discharge. There are several tributaries that contribute to the flow of the Grand River, including the Red Cedar River and Maple River. The river's flow is highest in the spring due to snowmelt and precipitation, while summer and fall typically see lower flow rates. There are several dams along the Grand River, including the Portland dam, which was constructed in 1847 and has undergone several renovations. Interesting facts about the hydrology of the Grand River include its designation as a Michigan Natural River and its importance as a habitat for migratory fish species.
August 7, 2026
| Elevation | 719.0 ft |
| Last Updated | |
| Gage height, ft | 5.24 ft |
| Streamflow, ft³/s | 438.0 ft3/s |
| Stream water level elevation above NAVD 1988, in ft | 709.76 ft |
| Percent of Normal | 78% |
| Year Over Year Average | 568 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 10,800 cfs |
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