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Saylorville Lake Marina

Middle River near Polk City, IA

River57.1 mi

Around here

Around Middle River

Crow's Nest RV Resort & Cabin Rentals13.1 miIowa RV Parks19.6 mi20 mi

Public land: USGS PAD-US

About this river

Middle River is a 57.1 mile river near Saylorville Lake Marina in Iowa. Streamflow is measured at the USGS gauge Middle River near Indianola, IA (site 05486490). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1941 to 2026

Middle River typically runs highest in May, at a median 267 cfs, and lowest in October, at 27 cfs. The highest flow on record for any single day is 21,400 cfs, in 1947.

Show the numbers
Typical flow by month at Middle River near Indianola, IA, in cfs
MonthTypical (cfs)Usual range (cfs)
January3813 to 114
February6023 to 177
March19781 to 474
April19986 to 470
May267114 to 591
June21086 to 494
July9548 to 217
August4425 to 103
September3114 to 112
October2710 to 100
November4318 to 133
December3614 to 120

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 86 years of record. Statistics published by the US Geological Survey for Middle River near Indianola, IA (site 05486490). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

Boat access nearby

3 mapped launches sit in the mapped area of Middle River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.

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