Grand River

Streamflow Hydrology Weather


Grand River Levels

October 9 2024

5,425 ACRE-FT

Discharge Volume Today
-100.4 cfs (-3.54%) since yesterday
16.84% of normal Very Low

Total streamflow across the Grand River was last observed at 2,735 cfs, and is expected to yield approximately 5,425 acre-ft of water today; about 17% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 16,240 cfs, with recent peaks last observed on 2017-04-07 when daily discharge volume was observed at 240,121 cfs.

Maximum discharge along the river is currently at the Grand River At Grand Rapids reporting a streamflow rate of 1,200 cfs. However, the streamgauge with the highest stage along the river is the Grand River At Jackson with a gauge stage of 8.88 ft. This river is monitored from 12 different streamgauging stations along the Grand River, the highest being situated at an altitude of 10,170 ft, the Grand River Ditch At La Poudre Pass.

Last Updated 2024-10-09
Streamflow 2,734.9 cfs
Percent of Normal 16.84%
Maximum 240,121.0 cfs
2017-04-07

About the grand river


The Grand River is a 300-kilometer long river that runs through southern Ontario, Canada. It was an important waterway for Indigenous peoples and European explorers and was later used for transportation and industry. The river originates in the highlands of Dufferin County and flows into Lake Erie at Port Maitland. The river’s hydrology is affected by numerous tributaries and reservoirs, including the Conestogo, Speed, and Eramosa rivers, and the Elora and Guelph Lake reservoirs. There are also several dams along the river, including the Shand Dam and the Guelph Lake Dam. The Grand River is used for water supply, flood control, and hydroelectric power generation. It is also a popular destination for recreational activities such as fishing, boating, and camping. The river is also home to several agricultural operations, including dairy farms and crop production.

Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Grand River Ditch At La Poudre Pass
USGS 09010000
-999 cfs 0.00 ft None
Grand R At Little Eagle Sd
USGS 06357800
31 cfs 2.57 ft -3.14
Grand River At Jackson
USGS 04109000
58 cfs 8.88 ft -2.36
Grand River Near Eaton Rapids
USGS 04111000
194 cfs 1.8 ft 0
Grand River At Lansing
USGS 04113000
173 cfs 2.23 ft 2.98
Grand River Near Gallatin
USGS 06897500
44 cfs 2.69 ft -2.21
Grand River At Portland
USGS 04114000
319 cfs 5.3 ft -13.08
Grand River At Chillicothe
USGS 06899680
361 cfs 6.97 ft
Grand River Near Sumner
USGS 06902000
205 cfs 6.21 ft -2.38
Grand River At Ionia
USGS 04116000
511 cfs 7.85 ft 2.2
Grand River Near Painesville Oh
USGS 04212100
26 cfs 1.72 ft -7.14
Grand River At Grand Rapids
USGS 04119000
1200 cfs 0.91 ft -4.76

Peak Annual Discharge

Grand River Maximum Total Discharge

Seasonal Comparison

Grand River Year Over Year Discharge


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