Draft Flood zone data from FEMA.
Draft 1-percent-annual chance water surface elevations and floodplains resulting from 2016 and 2018 funding are now available. Data development funded by FEMA included new survey, hydrology, and hydraulics tasks to address priorities resulting from Discovery and 2017 prioritization. Additionally, leveraged USACE Columbia River mapping is included for reference purposes only. Tie-ins between USACE and FEMA data will be refined as part of a preliminary product.

This information can provide a range of valuable flood risk information that may be used locally for planning purposes during the flood study update and provide a bridge of information where current gaps exist.

For a copy of the effective Flood Insurance Study and Flood Insurance Rate Map, please navigate to msc.fema.gov
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