Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.

Federal regulators repeatedly granted appeals to remove Camp Mystic’s buildings from their 100-year flood map, as the camp operated and expanded in a dangerous flood plain in the years before rushing

US regulators reportedly altered official maps of flooding risks to remove many of the buildings at a camp in Texas where 27 children died in severe floods. Citing official records, the New York Times and Associated Press said maps by the Federal Emergency Management (Fema) in 2011 had initially considered the popular summer camp to be in high risk of flooding.