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  2. 2009 Southeastern United States floods - Wikipedia

    en.wikipedia.org/wiki/2009_Southeastern_United...

    The flood is blamed for at least ten deaths. [1] The floods were historic, breaking records that went back more than a century in some locations. The Chattahoochee River, the largest river in the region, measured water levels at a 500-year flood level. [2]

  3. 100-year flood - Wikipedia

    en.wikipedia.org/wiki/100-year_flood

    For coastal or lake flooding, a 100-year flood is generally expressed as a flood elevation or depth, and may include wave effects. For river systems, a 100-year flood is generally expressed as a flowrate. Based on the expected 100-year flood flow rate, the flood water level can be mapped as an area of inundation. The resulting floodplain map is ...

  4. Flood insurance rate map - Wikipedia

    en.wikipedia.org/wiki/Flood_Insurance_Rate_Map

    The term 100-year flood indicates that the area has a one-percent chance of flooding in any given year, not that a flood will occur every 100 years. [2] Such maps are used in town planning, in the insurance industry, and by individuals who want to avoid moving into a home at risk of flooding or to know how to protect their property. FIRMs are ...

  5. Floods in the United States (1900–1999) - Wikipedia

    en.wikipedia.org/wiki/Floods_in_the_United_States...

    The Grand River went above bankfull on the night of March 24, rising slowly for the next four days. It broke the previous high-water mark by over 60 cm (2.0 ft), and was considered a once in 100 year flood. Over one-half of the population on the west side of the river was inundated. On the east bank of the river, numerous factories went underwater.

  6. Hurricane Helene will bring a '500-year flood' WNC officials ...

    www.aol.com/hurricane-helene-bring-500-flood...

    The county is currently using 500-year flood maps to indicate areas where residents should be ready to evacuate. "We are using the 500-year flood plain maps as kind-of a guide.

  7. Shoal Creek (Tennessee River tributary) - Wikipedia

    en.wikipedia.org/wiki/Shoal_Creek_(Tennessee...

    The stream rises in northern Lawrence County, Tennessee, and enters the Tennessee River in Lauderdale County, Alabama, where its lower reaches are impounded in the backwater of Wilson Dam. Historically, Shoal Creek (Sycamore River) was an important source of water power for the cotton industry in Lawrence County. [3]

  8. Western Minnesota's Chippewa County to challenge new FEMA ...

    www.aol.com/lifestyle/western-minnesotas...

    The new maps are believed to roughly triple the amount of land in the county to be included in the 100-year floodplain, although the exact acreage is not known to county officials. While the maps ...

  9. 1985 Atlantic hurricane season - Wikipedia

    en.wikipedia.org/wiki/1985_Atlantic_hurricane_season

    Many streams and rivers rose to 100-500 year flood levels, with some cresting at record heights. As a result, whole towns, roads, and bridges were swept away. Nearly 9,000 homes were damaged, 4,000 of which were destroyed. Losses reached $577 million. [65]