Boyer River at Logan, IA

Harrison County, Iowa · USGS gauge 06609500 · NWS LGNI4 · Iowa river levels

Is Boyer River at Logan, IA flooding right now?

Boyer River at Logan, IA measured 4.38 ft on 2026-09-11 01:00:00 UTC. That observation was 16.6 ft below its 21 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height

4.38 ft

as of 69 min ago

Streamflow

356 cfs

data refreshed 8 min ago

Minor flooding here begins at 21 ft, with major flooding at 25 ft. The highest crest on record was 25.33 ft on Wed, Mar 13, 2019.

Streamflow outlook

NOAA National Water Model forecast, issued 14 hours ago. The NWM models discharge for every river reach in the country, including the many gauges the National Weather Service does not forecast individually. It is a model, not an official NWS river forecast, and it predicts flow rather than water level.

Flood stages at this gauge

Category	Stage	Current distance
Action	19 ft	14.6 ft below
Minor flood	21 ft	16.6 ft below
Moderate flood	22 ft	17.6 ft below
Major flood	25 ft	20.6 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

Stage	Date
25.33 ft	2019-03-13
25.22 ft	1965-03-01
24.75 ft	2008-06-08
23.87 ft	1996-07-17
23.02 ft	1996-06-21

Nearby gauges

Gauge	Distance	County
Soldier River at Pisgah, IA	15.2 mi	Harrison County
Willow Creek near Soldier, IA	19.7 mi	Monona County
Big Papillion Creek near Blair, Nebr.	23.9 mi	Washington County
Little Sioux River near Turin, IA	24.4 mi	Monona County
Monona-Harrison Ditch near Turin, IA	24.8 mi	Monona County

Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast