Columbia River Dam
- Episode aired Jul 16, 2009
- TV-PG
- 51m
The John Day Dam near Portland, Oregon is a huge producer of electricity and shipping portal. If blocked, traffic on the entire Columbia River comes to a screeching halt. With billions of do... Read allThe John Day Dam near Portland, Oregon is a huge producer of electricity and shipping portal. If blocked, traffic on the entire Columbia River comes to a screeching halt. With billions of dollars on the line, join Sean Riley on this challenging fix.The John Day Dam near Portland, Oregon is a huge producer of electricity and shipping portal. If blocked, traffic on the entire Columbia River comes to a screeching halt. With billions of dollars on the line, join Sean Riley on this challenging fix.