Inundation Modeling

Sea Level Rise

Change in sea level in the South Slough and Coastal Frontal Watersheds

Summary:

One meter (approx. 3.3 feet) of sea level rise in South Slough will result in flooding during the highest tides of unprotected parts of Charleston and extensive areas above the current heads of tide in the South Slough estuary.

Why do we care:

Most sources agree that by 2100, there is a high likelihood that sea level on the OR coast will have risen by one meter (3.3 ft). Flooding will occur sooner in unprotected areas from periodic high water surges caused by storms and distant tsunamis, most likely causing extensive property damage in low lying developed areas.