Betsy's most severe impacts were felt in Louisiana, where it made landfall as a powerful Category 4 hurricane. The cyclone propelled damaging storm surge into Lake Pontchartrain, breaching levees in New Orleans and inundating several neighborhoods, most notably the lower Ninth Ward. Strong winds caused widespread power and telecommunications outages across the region. Further inland, effects wrought by Betsy were considerably weaker, though precipitation caused by the storm extended as far northeast as Pennsylvania. Rainfall was primarily beneficial in Arkansas, though localized flooding impacted rice and cotton crops. In Kentucky and Illinois, strong winds caused moderate property damage. By the time the remnants of Betsy moved into the northeastern United States, the storm's winds and rainfall had substantially lessened, and as such resulting wind damage was negligible while precipitation benefited crops. In total, the damage wrought by Betsy throughout its existence equated to roughly $1.42 billion, making it the costliest Atlantic hurricane at the time. In addition the hurricane caused 81 deaths, primarily in Louisiana. After the season, the United States Weather Bureau retired the name Betsy from their rotating lists of tropical cyclone names.