July Rains Prove Too Much For Chicago’s Expensive Back-Up Plan

Chicago’s $3.8 billion Deep Tunnel flood-control project was seemingly ready to go before the torrential downpours in early July. But as the rain came down, runoff overflowed onto streets and into residents’ homes in what would become a record-setting storm . So why didn't the Deep Tunnel system reduce floods like it’s supposed to? Reset gets the latest from Chicago Tribune environment and public health reporter Michael Hawthorne.