Bankfull elevation definition

Bankfull elevation means the point on a stream bank at which overflow into a floodplain begins.
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Bankfull elevation means the bank height inundated by a 1.5 to 2 year average recurrence interval and may be estimated by morphological features such average bank height, scour lines and vegetation limits.
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Bankfull elevation means the point on a stream bank at which overflow into a floodplain begins for non-incised channels.”
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Examples of Bankfull elevation in a sentence

  • Bankfull elevation is the level at which water begins to leave the channel and move into the floodplain and is reached at a discharge that generally has a recurrence interval of 1 to 2 years on the annual flood series.

  • Bankfull elevation is the level at which water begins to leave the channel and move into the floodplain and is reached at a discharge that generally has a recurrence interval of 1 to 2 years in the annual flood series.

  • Bankfull elevation is the level at which water begins to leave the channel and move into the floodplain and is reached at a discharge which generally has a recurrence interval of 1 to 2 years on an annual flood series.

  • Bankfull elevation was determined by field assessment of indicators, including change in vegetation, breaks in bank slope, change in bank material particle size, bank undercuts, and signs of past flood levels.

  • Bankfull elevation Abandoned floodplain Bankfull bench Figure 9: Bankfull bench and related stream features (USACE 2005).

  • Fifteen radio broadcasters completed the stage two questionnaire.

  • Flow A Bankfull Flow Flow B Bankfull Flow Flow C Bankfull Flow Bankfull elevation Bankfull elevation Bankfull elevation Figure 2.

  • Bankfull elevation is the level at which water begins to leave the channel and move into the floodplain and is reached at a discharge which generally has a recurrence interval of 1 to 2 years on the annual flood series.

  • On depositional features such as point bars, the SL is often defined by the limit of perennial vegetation, or by an indentation in the bar (locally steep area) just above the SL.✓ Bankfull elevation -- Use indicators described in the “Establishing The Sample Reach” section.✓ First flat, depositional feature -- This feature defines the upper boundary of the streambank that will be assessed for both bank angle and stability.

  • Bankfull elevation can be measured anywhere along the stream channel (along riffles, pools, or runs) where consistent bankfull indicators are present (Figure 1).


More Definitions of Bankfull elevation

Bankfull elevation means the elevation of incipient flooding in a well defined channel or, where the channel bank is less clearly defined, the water surface elevation given a discharge with a 1.5 year return interval.
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Bankfull elevation means the bank height inundated by an approximately 1.2 to 1.5 year (maximum) average recurrence interval.
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Related to Bankfull elevation

  • Base flood elevation (BFE) means the elevation shown on the Flood Insurance Rate Map for Zones AE, AH, A1-30, VE and V1-V30 that indicates the water surface elevation resulting from a flood that has a 1-percent or greater chance of being equaled or exceeded in any given year.

  • Base Flood Elevation (BFE means a determination of the water surface elevations of the base flood as published in the Flood Insurance Study. When the BFE has not been provided in a “Special Flood Hazard Area”, it may be obtained from engineering studies available from a Federal, State, or other source using FEMA approved engineering methodologies. This elevation, when combined with the “Freeboard”, establishes the “Regulatory Flood Protection Elevation”.

  • LOT FRONTAGE means lot frontage as defined in Town's Zoning By-law No. 1136 (1987), as amended, or any successor thereto.

  • Elevation means the vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea level;

  • Floodplain Management means the operation of an overall program of corrective and preventive measures for reducing flood damage, including but not limited to emergency preparedness plans, flood control works and floodplain management regulations.

  • Water Surface Elevation (WSE means the height, in relation to NAVD 1988, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • Water surface elevation means the height, in relation to the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, where specified, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

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  • Regulatory Flood Protection Elevation means the “Base Flood Elevation” plus the “Freeboard”. In “Special Flood Hazard Areas” where Base Flood Elevations (BFEs) have been determined, this elevation shall be the BFE plus two (2) feet of freeboard. In “Special Flood Hazard Areas” where no BFE has been established, this elevation shall be at least two (2) feet above the highest adjacent grade.

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