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A channel for an overflow of water caused by flooding.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Environmental Science) the path along which floodwater travels
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



a place to which floodwaters are diverted.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
A project that took 10 years to push through, the Manggahan Floodway housing was realized through a united approach.
The House Committee on Housing and Urban Development has appealed to government housing agencies to fast-track the processing of documents that would pave the way for the awarding of land titles to qualified beneficiaries of the 71 hectares of the Manggahan Floodway Socialized Housing Project site in Taytay, Rizal.
A male body was discovered in the Erchong Floodway, near a dam close to the Shuhong Ecological Park, around noon Tuesday, Nov.
Another thing missing is the floodway that is supposed to help drain Laguna de Bay to the sea.
As part of a broad effort to revisit development policies after the devastation of Tropical Storm Allison, in 2006 the city of Houston tried to restrict building in the "floodway" - an area within the floodplain that is at particular risk of being damaged by flooding because it's directly in the central current of floodwaters.
The Red River Floodway, affectionately nicknamed 'Duff's Ditch' in honour of the man behind the project, has a fine recreation component to it.
Owners of properties which are situated in a floodway where flooding occurs at high frequency and who are at high risk, will be advised of its dangers so that they can take measures to protect their property.
To save more-densely-populated areas, engineers made a tough call: Open Birds Point Levee and allow water to pour into the low-lying New Madrid Floodway (see map, below).
The Jadwin plan originally called for a floodway within the district, but the Corps made 14 cutoffs, which shortened the river by 152 miles and sped up its flow enough that the floodway wasn't needed, according to the Corps website.
On May 18, 2011, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite observed water in the Morganza Floodway along the Mississippi River.
Workers lifted 28 of the 350 floodway slats that keep the river in its channel for the first time since 2008, unleashing a torrent of water into the lake.