Chicago's Deep Tunnel: Is it the solution to urban flooding or a

Chicago's $4BN Tunnel Network: Worth the Cost?, Keith J

Water Tunnel Business 'Exploding' as Technology Reduces Risk and Cost

The Tunnel and Reservoir Plan service area, Chicago, Illinois.

McCook Reservoir promises cleaner water - Metropolitan Planning Council

Chicago Is Spending $3.8 Billion to Fight Flooding. It Might Not Be Enough. - WSJ

Weekend Storm Overwhelms Chicago's Sewer, Deep Tunnel System, Chicago News

Tunnels can help combat climate events

The Secret $4BN Tunnel Network Under Chicago

Chicago Flood Mitigation Scrambles to Keep up With Climate Change

Chicago's Flood-Control Project Can't Contend With Climate Change

Chicago Has an Elaborate System of Tunnels and Tanks to Handle Storm Water Run-off. Where Other Cities Run Dry, Chicago Often Has Too Much Water : r/InfrastructurePorn

Deep Tunnel's Deep Problems – Chicago Magazine