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When waters rise: Where do big floods occur and why? See the map

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Kingwood, Texas

A boat makes its way up the flooded Lake Houston Parkway as floodwaters from Tropical Storm Harvey rise Tuesday, Aug. 29, 2017, in Kingwood, Texas. (AP Photo/Gregory Bull)

What states and regions have a history of flooding? What caused it? Now you can easily find out. 

The Dartmouth Flood Observatory collects flood data from news, governmental, instrumental, and remote sensing sources from 1985-present. Large flood details for the United States were pulled to create a flood map and searchable database. The map shows points in the continental U.S., while the search allows searching for all 50 states.

Click on a map marker to find out more about a flood, or on the left-hand corner menu to bring up a legend for different flood causes. Each point or city represents the geographic center of the flood, but it may encompass other cities or areas. Search the database by keyword, state, cause or a combination of criteria.

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G.R.Brakenridge, "Global Active Archive of Large Flood Events", Dartmouth Flood Observatory, University of Colorado, http://floodobservatory.colorado.edu/Archives/index.html.

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