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Iowa | Iowa County
Iowa RiverMarengo to Amana
Long Iowa River day from the Marengo public-access corridor toward Amana, using the direct Marengo gauge and a conservative same-route flow range.
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Route location
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Route overview
Trip details
Access rules, camping and seasonal notes.
Permits, camping and season
Access and shuttle
Launch from the Marengo Iowa River access corridor and take out in the Amana area for a long rural Iowa River day. The Marengo gauge is direct, but the route needs conservative take-out planning around private banks and Amana dam/canal context.
Access map
Put-in
Marengo / Gateway Park Iowa River access corridorGateway Park and Big Bend support public Iowa River access near Marengo, but flooding can affect roads and access quality.
Take-out
Amana-area Iowa River accessThe Amana take-out is modeled as a named public-access corridor rather than a ramp-survey point; verify the landing before putting on.
Road shuttle
Stage the Amana-area take-out first, then drive back to the Marengo access corridor. Confirm the exact Amana landing and parking before launching because this is a long rural day with limited public exits.
Additional access notes
- Older Iowa River guide material notes the Amana society dam and canal system downstream of Marengo. Do not extend casually into dam, diversion, or private canal infrastructure.
More route and safety guidance
- Older Iowa River guide material notes that the Amana society dam and canal system affect the corridor downstream of Marengo; do not extend casually into dam or diversion water.
- Low water can make the river shallow and slow, while high water covers bars, speeds the current, and reduces recovery time around wood.
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Conditions
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Gauge source
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Weather
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Station details and river cameras
Station observations
USGS measurements
Measurement notes and coverage
These are observations at the station. Water depth and current can differ along your trip.
River camera · USGS
View at the gauge
Iowa River at Marengo, IA. This view may be outside your paddling reach. Images are periodic and do not establish safe conditions.
Photos and recent reports
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Paddler reports
Recent notes from paddlers
A few quick notes from people who were on this route recently.
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Sources and methodology
Review source dates and published guidance below. We have not inspected this trip in person.
Why this scoreData reliability: checking
This rating reflects whether the gauge measures this part of the river, whether published water-level guidance is available, and how recently the data was updated.
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Data behind the scoreWater levels, published guidance and update times
These readings and published water-level limits help explain today’s score.
| Gauge site | Iowa River at Marengo, IA |
| Discharge | Checking |
| Gauge height | Checking |
| 24h trend | Checking |
| 24h change | Checking |
| Current band | Checking |
| Rain last 24h | Checking |
| Rain last 72h | Checking |
| Air temp | Checking |
| Water temp | Checking |
| Wind | Checking |
| Gusts | Checking |
| Rain timing | Checking |
| Preferred range | 300 cfs to 5,000 cfs |
| Low threshold | 300 cfs |
| High threshold | 5,000 cfs |
| Evidence strength behind the range | Local route guidance |
| Gauge observed | Checking |
| Paddle Today updated | Checking |
| Main source behind this score | CanWePaddle Marengo to Amana estimated range |
| Gauge source | Checking |
| Weather source | Checking |
| Rainfall source | Checking |
NotesPublished evidence and verification notes
These notes cover the access details, route quirks, and source caveats most likely to matter once you get there.
- Gauge check during route review · 2026-07-222,120 cfs / 8.88 ft at 2026-07-22 20:00 CDT
This reading was saved when we checked the guide. It is not today’s water level. Check the current gauge and local conditions before paddling.
- Threshold range300-5,000 cfs
CanWePaddle ties the Marengo-to-Amana section to USGS 05453100 and estimates a 300 to 5,000 cfs runnable window.
- Route shape18 miles / about 7 hours
CanWePaddle identifies Marengo to Amana as an 18-mile Iowa River flatwater route with a typical seven-hour float time.
- Marengo access supportGateway and Big Bend river-access corridor
Iowa County Conservation documents Iowa River access at Gateway Park and limited Iowa River access and parking at Big Bend near Marengo, with flooding caveats.
- Dam and diversion caveatAmana society dam and canal system
Iowa River guide material notes a dam roughly five miles below Marengo that diverts water toward the Amana canal system, so this route requires take-out discipline and no casual downstream extension.
Verify it yourselfCheck the source links
Use these links to double-check the gauge, route details, and access notes before you head out.
Other routes nearby
More on Iowa River
All 4Nearby routes within 75 miles
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