Although efforts of federal agencies, state and local governments, and tribal nations have reduced flood risk, flooding still accounts for 90% of all-natural disaster damage. To reduce flood risk, the Great Lakes & Ohio River Division operates and maintains 84 dams and reservoirs to protect communities in the region. The majority are within the flood-prone Ohio River basin. Also, the Division has 539 miles of levees and over 100 local flood protection projects which include walls, levees and channel improvements. These projects have saved lives, homes, businesses and prevented over $39 billion in damages since 2012.