Riverine flood threats (three levels of inundation) and coastal storm surge zones (at least two levels of inundation) are based upon different mapping formats and processes, but both indicate the flood threat areas. In communities only inundated by flash flooding, impact area maps based on cubic feet per second alert levels, rainstorm thresholds or flow depths are acceptable. Examples of these are depicted below. The adopted flood response plan (by whatever name), must discuss the actions taken by the community at each level of inundation. In large counties, there may not be detailed mapping and flood warning planning for these areas. In such cases, some counties designate the entire 1% chance flood level as the initial area to be notified by EAS and other flood alerts and have detailed multilayered flood levels only in the populated areas as is shown in the riverine flood inundation map above. If the flood threat recognition system and flood response plan utilize such a scenario, it can be considered as a creditable flood warning and response system. Additionally, for any Activity 610 credit, the community must have one or more outreach projects on the warning and safety precautions and there must be an annual exercise of the plan with a lessons-learned report. These activity credit criteria are discussed in Section 611.b. of the CRS Coordinator’s Manual. If you have any questions concerning the following checklist, please contact Al Goodman at awgconsult@outlook.com or by phone at .
Riverine flood threats (three levels of inundation) and coastal storm surge zones (at least two levels of inundation) are based upon different mapping formats and processes, but both indicate the flood threat areas. In communities only inundated by flash flooding, impact area maps based on cubic feet per second alert levels, rainstorm thresholds or flow depths are acceptable. Examples of these are depicted below. The adopted flood response plan (by whatever name), must discuss the actions taken by the community at each level of inundation. In large counties, there may not be detailed mapping and flood warning planning for these areas. In such cases, some counties designate the entire 1% chance flood level as the initial area to be notified by EAS and other flood alerts and have detailed multilayered flood levels only in the populated areas as is shown in the riverine flood inundation map above. If the flood threat recognition system and flood response plan utilize such a scenario, it can be considered as a creditable flood warning and response system. Additionally, for any Activity 610 credit, the community must have one or more outreach projects on the warning and safety precautions and there must be an annual exercise of the plan with a lessons-learned report. These activity credit criteria are discussed in Section 611.b. of the CRS Coordinator’s Manual. If you have any questions concerning the following checklist, please contact Al Goodman at awgconsult@outlook.com or by phone at .
610-documentation-checklist.docx