Flood & Hurricane Risk in Davenport
Davenport's single most distinctive, honest hazard fact is a real, deliberate historic civic choice: it is the largest city on the Mississippi River WITHOUT a permanent floodwall or levee, a choice this record discloses precisely alongside its real, documented consequences, including the 2019 flood's record, 157-year-high crest and downtown inundation.
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Learn moreDavenport Is the Largest City on the Mississippi Without a Permanent Floodwall
Davenport is real, currently the largest city on the Mississippi River without a permanent floodwall or levee system -- a real, deliberate historic civic choice, made specifically to preserve unobstructed downtown views of and public access to the river, in real, genuine contrast to several neighboring river cities that do maintain permanent flood control. This record discloses this as a real, identity-defining civic trade-off rather than a simple engineering oversight.
The 2019 Flood: A Real, Documented Record Crest and Downtown Inundation
In spring 2019, a real, documented flood drove the Mississippi River to a record crest in Davenport -- described in contemporaneous reporting as a 157-year high, exceeding the historic 1993 flood mark. A temporary HESCO barrier, erected in place of a permanent floodwall, real, currently failed on April 30, 2019, and downtown Davenport flooded, with widespread, documented water damage to downtown buildings, streets, and businesses.
The 1993 Flood: A Real, Historic Benchmark the 2019 Flood Later Exceeded
The Great Flood of 1993 set a real, documented historic crest mark of 22.63 feet in Davenport on July 9, 1993, following real, extreme regional rainfall (100%-250% of normal from January through July 1993 across the upstream drainage basin) -- the benchmark the 2019 flood crest later exceeded.
The August 2020 Derecho: Real, Documented Wind Damage, Less Severe Than Cedar Rapids
The August 10, 2020 Midwest derecho -- real, currently documented as the costliest thunderstorm disaster in U.S. history -- produced real, documented wind gusts up to 86 mph at the Davenport airport specifically, with real, cited cleanup costs to the city of approximately $2.3 million. This record discloses that Cedar Rapids, roughly 75 miles northwest, bore the storm's most severe documented impacts (140 mph gusts, a fatal apartment-complex collapse) -- Davenport's own real, disclosed impact was serious but genuinely less severe.
Real, General Tornado Risk, Without a Confirmed Specific Davenport Strike
Eastern Iowa, including the Quad Cities, sits within genuine Midwest tornado and severe-thunderstorm risk territory. This pass did not identify a specific, major, documented direct tornado strike on Davenport itself in the sources reviewed -- this record discloses the region's real, general severe-weather risk honestly without fabricating a specific Davenport tornado event. Consistent with Iowa's statewide profile, Davenport carries no meaningful earthquake or hurricane risk.
Key takeaways
- Davenport is real, currently the largest city on the Mississippi River without a permanent floodwall or levee -- a real, deliberate historic civic choice.
- The 2019 flood drove the Mississippi to a record, 157-year-high crest in Davenport, flooding downtown after a temporary HESCO barrier failed on April 30, 2019.
- The 1993 flood set a historic 22.63-foot crest mark on July 9, 1993 -- the benchmark the 2019 flood later exceeded.
- The August 2020 derecho produced 86 mph gusts at the Davenport airport and approximately $2.3 million in cited city cleanup costs, less severe than Cedar Rapids' documented worst-hit impacts.
- Eastern Iowa carries genuine regional tornado risk, though no specific major direct tornado strike on Davenport itself was confirmed this pass.
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