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Illinois | Metro-East Illinois
Mississippi RiverPiasa Harbor to Alton Riverfront
A guarded 7-mile Pool 26 Mississippi River Water Trail reach from the named Piasa Harbor launch to the public Alton Riverfront take-out. The Mississippi River Water Trail documents the itinerary, shuttle, and finish; USACE and USGS provide direct Pool 26 live level context.
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Route overview
Trip details
Access rules, camping and seasonal notes.
Permits, camping and season
Access and shuttle
This guarded Pool 26 water-trail reach follows the documented Piasa Harbor-to-Alton Riverfront itinerary. It is a broad commercial navigation pool, not a small-river float: use the direct Alton Pool 26 gauge, respect tows and structures, and launch only when the low-water reference and same-day conditions are acceptable.
Access map
Put-in
Piasa Harbor public accessPiasa Harbor and Alton Riverfront are named public access areas, but verify current parking, ramp condition, water level, and any temporary closures before departure.
Take-out
Alton Riverfront public boat launchUse the 14.0-ft USACE low-water reference as a conservative planning floor; it is not a guarantee of safe passage. Below that level, ramps and harbor access may be compromised.
Road shuttle
Stage the Alton Riverfront take-out and use a two-car shuttle or the Mississippi River Water Trail shuttle pattern. Confirm current parking, ramp status, and any event/closure restrictions before launching.
Additional access notes
- Commercial tows have right-of-way and may need up to a long distance to stop. Stay out of the navigation channel and tow blind spots; avoid wing dikes, bridges, lock structures, floating debris, and strong cross-channel currents.
- Wear a properly fitted PFD, carry communication/rescue equipment, and do not launch in severe weather, flood warnings, or when same-day wind/current conditions exceed the group's skill.
- No informal camping or private-bank landing is assumed; use designated access and nearby camping/lodging only.
More route and safety guidance
- Use USGS 05587498 / USACE Alton Pool 26 stage as a conservative planning check. Below 14.0 ft, low-water drawdown can compromise ramps and harbor access; above the floor, conditions still require same-day visual judgment.
- Commercial tows have right-of-way and may be very large. Stay out of the navigation channel, give vessels extensive room, avoid blind spots, and never assume a tow can maneuver around a paddle craft.
- Stay clear of wing dikes, bridge approaches, floating debris, lock-and-dam structures, and strong cross-channel currents. Wear a properly fitted PFD and carry communication and rescue equipment.
- This is a day route with no on-route camping assumption. Use designated nearby camping or lodging and do not land on private or restricted frontage.
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Conditions
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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
Mississippi River Pool Lock and Dam 26 at Alton, IL. 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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Recent notes from paddlers
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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 | Mississippi River Pool Lock and Dam 26 at Alton, IL |
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| Preferred range | Needs paddler reports |
| Known low-water floor | 14.00 ft |
| High threshold | Water-level guidance unavailable |
| Evidence strength behind the range | Official data source |
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| Main source behind this score | USACE Alton Pool 26 low-water reference |
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NotesPublished evidence and verification notes
These notes cover the access details, route quirks, and source caveats most likely to matter once you get there.
- Exact route and distancePiasa Harbor to Alton Riverfront; about 7 miles
The Mississippi River Water Trail's Great Rivers itinerary documents the 7-mile Piasa Harbor launch and Alton Boat Launch finish with shuttle logistics.
- Public endpointsPiasa Harbor Area to Alton Riverfront Recreation Area
USACE recreation and Pool 26 access inventories identify Piasa Harbor/Piasa Creek access and the Alton Riverfront boat ramp as public facilities.
- Direct gauge and thresholdUSGS 05587498; 14.0 ft conservative minimum planning floor
USGS supplies current Pool 26 gage-height telemetry; USACE's Alton Pool data publish a 14.0-ft low-water reference, and launch closures at approximately 413 ft elevation document the practical low-water risk.
- Safety and river characterBroad commercial navigation pool with tows, wing dikes, bridges, debris, and lock/dam hazards
The Mississippi River Water Trail gives explicit commercial-traffic, wake, obstruction, and PFD rules for paddlers.
- Camping and logisticsDay route; nearby Pere Marquette and regional camping/lodging; shuttle recommended
The Water Trail lists nearby camping/lodging and a shuttle-based itinerary; no informal on-route camping is assumed.
- Endpoint coordinatesPiasa Harbor 38.93709,-90.28671; Alton Riverfront 38.88550,-90.17592
Coordinates are derived from the USACE Pool 26 access-inventory UTM locations and should be confirmed against current launch signage.
Verify it yourselfCheck the source links
Use these links to double-check the gauge, route details, and access notes before you head out.
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