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Chicago's Well-Kept Secret: Tunnels - The New York Times
In Chicago, Flooding Overwhelmingly Strikes Communities of Color - Circle of Blue
Safety, Free Full-Text
So Chicago: Deep tunnel, marvelous site
Climate Change's Impact on Education, Tahoe Basin Storm Aftermath
Downtown Seattle Transit Tunnel - Wikipedia
Boring machine rescue nearly triples in price, according to new city report
Chicago's Deep Tunnel -- Chicago Tribune
Tunnel and Reservoir Plan - About the River - Friends of the Chicago River
How Climate Change Will Affect New York City
Remote Sensing, Free Full-Text
Chicago Is Spending $3.8 Billion to Fight Flooding. It Might Not Be Enough. - WSJ
Water Transmission and Wastewater Conveyance
Deep Tunnel's Deep Problems – Chicago Magazine