The Federal Emergency Management Agency this week updated Senate lawmakers on efforts to produce more accurate flood maps and flood-risk models. A key change will shift flood-risk analysis and insurance pricing from the so-called 1 percent annual chance of flooding to the actual flood risk to the structure itself. Testifying before the Senate Committee on Banking, Housing and Urban Affairs, FEMA Administrator Roy Wright said adopting the structure-based methodology would require an entirely new approach in flood insurance rating and underwriting, including new regulatory hazard and risk products. Other witnesses at the hearing expressed support for the recommendation, saying it would remove the uncertainty caused by constantly changing flood lines in FEMA maps. The hearing is...