St. Louis ? More than 100 dump trucks rolled through city streets Sunday collecting mangled trees and branches left behind by last week’s powerful storms that cut power to hundreds of thousands of customers.

Tons of debris reached up to 25 feet high at one of three city drop-off points, parks officials said. Members of the Missouri Army National Guard are assisting with the cleanup.

About 290,000 homes and businesses here were still without power Sunday, down from the more than a half-million homes and businesses powerless last week while temperatures soared into triple digits.

Four deaths in the region have been attributed to the storms or heat.

A utility company spokeswoman said it could be at least four days before service is fully restored.