TL;DR: The Disaster Loan Assistance program provides low-interest, working capital loans of up to $2 million for small businesses.
SBA provides low-interest disaster loans to businesses of all sizes, private non-profit organizations, homeowners, and renters. SBA disaster loans can be used to repair or replace the following items damaged or destroyed in a declared disaster: real estate, personal property, machinery and equipment, and inventory and business assets.
Apply online at https://disasterloan.sba.gov.