Mississippi River Pool Lock and Dam 26 at Alton,IL

Mississippi River IL USGS

Mississippi River Pool Lock and Dam 26 at Alton,IL (05587498) is a real-time river monitoring station on the Mississippi River in IL, operated by the U.S. Geological Survey. Riverbot tracks its river conditions, including water level and keeps recent, datum-labelled water-level history for anglers. 61 fish species are associated with this station in public fish records.

USGS site number
05587498
Operated by
U.S. Geological Survey
State
IL
Coordinates
38.8873, -90.1840

Live conditions & history

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Fish recorded near this station

Community observations nearby

Mississippi River Pool Lock And Dam 26 At Alton,Il has 61 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.

Species include: River Shiner (Alburnops blennius), Skipjack Shad (Alosa chrysochloris), Eyetail Bowfin (Amia ocellicauda), American Eel (Anguilla rostrata), Freshwater Drum (Aplodinotus grunniens), and 56 others.

5 species above are flagged non-native or potentially invasive (Goldfish, Grass Carp, European Carp, Silver Carp, Bighead Carp). Records show what has been observed near this station, not what is native to the watershed.

Where these records come from

Evidence
Community observations nearby
Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
Records
61 species
from 200 individual records
Observed
Jun 29, 2020 – Aug 18, 2026
200 dated records