National Weather Service St. Louis River Summary
Observed stages, 24-hour changes, and forecast information for Mississippi River points including Alton and Melvin Price Lock and Dam.
Open official sourceOFFICIAL RIVER INFORMATION
River Watch
A practical starting point for current Mississippi River information near Alton, Illinois.
CHECK THE SOURCE
Current information changes on its own schedule.
River conditions, channel activity, and notices can change independently. This page points to the official sources that crews, dispatchers, and shoreside teams can check before confirming a handoff window or discussing a current condition.
USACE St. Louis Weekly Status Report
A weekly overview of channel conditions, dredge status, marker status, stages, forecasts, navigation notices, and reported risks.
Open official sourceUSACE Notices to Navigation Interests
Active Corps notices for maintenance projects, hazards, restrictions, and other events affecting waterway navigation.
Open official sourceBroadcast Notices to Mariners
Searchable Coast Guard notices for navigation hazards and events, with District 8 coverage for the inland river system.
Open official sourceUSACE E-Hydro Survey Map
USACE's map-based archive for available hydrographic surveys. A survey is a dated snapshot, not a vessel arrival schedule or navigation instruction.
Open official sourceDAILY WATCH NOTES
Short updates. Clear sources.
Morning check: August 27, 2026. The latest USACE St. Louis weekly channel condition report listed on the official site is dated August 12. The district's dredge-survey list includes postings through August 20. Those dated sources are useful context, not a live condition or a vessel-access commitment.
This page receives a dated morning check every day. Each note identifies its official source; if no material update is available, it will say so rather than repeat older conditions as new. If a source has a newer update, the source itself controls.
River Watch is general information, not navigation advice, a safety directive, or a promise about vessel access, timing, or delivery availability.
PLANNING A HANDOFF?
Bring the river context into the request.
Include the vessel or tow name, intended meeting area, timing range, and a current contact. That gives everyone a clearer starting point if conditions or schedules change.
Request Delivery