Annual flood definition

Annual flood means a discharge (Q) or flood flow event that occurs at a high frequency, i.e., there is greater than a 50% chance of a flood stage (<Q2) of at least this level occurring in any given year.
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Examples of Annual flood in a sentence

  • Annual flood event shall be determined according to the Agency of Natural Resources’ Flood Hazard Area and River Corridor Protection Procedure.

  • Annual flood events provide large areas for breeding and feeding, creating a natural process of replenishment where the migration of fish from the main channels to the flooded forests limits fishing intensity during the high water season.

  • Annual flood planning is beginning and TID is revamping plans to consider downstream impacts that may occur, often before the “flood stage” is reached.

  • A 2016 paper prepared by the European Environment Agency titled Floodplain management: reducing flood risks and restoring healthy ecosystems states: Annual flood losses [in Europe] can be expected to increase five-fold by 2050 and up to 17-fold by 2080.

  • Annual flood risk is a function of random meteorological events (e.g., precipitation duration and intensity, strong winds at high tide, etc.) and local physical attributes (e.g., ground cover, land use, topography).

  • Annual flood stages of the river from~912-1955 indicate that the 62 foot MSL of Mossy Lake was exceeded in everyyear except one (1936).

  • Annual flood losses in Illinois have averaged$257 million annually since 1983, and have increased steadily since the 1950s.

  • Table 5.1 Annual flood season (June to November) volumes of flow estimated for Vientiane and Kratie for selected annual recurrence intervals (km3) Figure 5.1 The flood history of the Lower Mekong Basin from 1960 to 2004 based on a statistical analysis of the annual volumes of flow during the six flood months (June to November).

  • Annual flood is the highest momentary peak discharge in a water year/calendar year (Dalrymple, 1960).

  • Annual flood insurance premiums for each type of house are given in the second column of table V.

Related to Annual flood

  • Base flood means the flood having a one percent chance of being equaled or exceeded in any given year.

  • 100-year flood means a flood that has a 1-percent or greater chance of recurring in any given year or a flood of a magnitude equaled or exceeded once in 100 years on the average over a significantly long period.

  • Area of special flood hazard means the land in the floodplain within a community subject to a one percent or greater chance of flooding in any given year.

  • Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.

  • Special Flood Hazard Area (SFHA means the land in the floodplain subject to a one percent (1%) or greater chance of being flooded in any given year, as determined in Article 3, Section B of this ordinance.