Damage closes John Day Lock, slows Columbia River traffic > Portland District > Portland District News Releases
![DVIDS - News - Colossal construction on Monongahela pumps out water, marking turning point in top U.S. navigation project DVIDS - News - Colossal construction on Monongahela pumps out water, marking turning point in top U.S. navigation project](https://d1ldvf68ux039x.cloudfront.net/thumbs/photos/2110/6874153/1000w_q95.jpg)
DVIDS - News - Colossal construction on Monongahela pumps out water, marking turning point in top U.S. navigation project
![Three Gorges navigation lock handles record high freight in first quarter (3) - People's Daily Online Three Gorges navigation lock handles record high freight in first quarter (3) - People's Daily Online](http://en.people.cn/NMediaFile/2016/0407/FOREIGN201604071655000541802994162.jpg)
Three Gorges navigation lock handles record high freight in first quarter (3) - People's Daily Online
![The Dalles Lock Set to Open After Emergency Repairs — Columbia Community Connection News Mid-Columbia Region The Dalles Lock Set to Open After Emergency Repairs — Columbia Community Connection News Mid-Columbia Region](https://images.squarespace-cdn.com/content/v1/5e9a1686f716835e61268f2a/1617045065114-SFOI7YF4E2CUS3UVTBR5/dalles+dam+return+to+service+exported+2.jpg)
The Dalles Lock Set to Open After Emergency Repairs — Columbia Community Connection News Mid-Columbia Region
![PDF] Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock | Semantic Scholar PDF] Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/a61b1650d5a5065376c72b136ce8acbf37a2006a/9-Figure1-1.png)
PDF] Salt Intrusion Prevention in Locks: Designing a Movable Sill in the Existing Krammer Commercial Navigation Lock | Semantic Scholar
![SFWMD Navigation Locks on Kissimmee River Resume Operations Today | South Florida Water Management District SFWMD Navigation Locks on Kissimmee River Resume Operations Today | South Florida Water Management District](https://www.sfwmd.gov/sites/default/files/2017-07/nr_2017_0707_north_shore_locks.jpg)
SFWMD Navigation Locks on Kissimmee River Resume Operations Today | South Florida Water Management District
![Aerial view of Kochendorf double navigation lock (left), powerhouse... | Download Scientific Diagram Aerial view of Kochendorf double navigation lock (left), powerhouse... | Download Scientific Diagram](https://www.researchgate.net/profile/Roman-Weichert-2/publication/310784411/figure/fig1/AS:654361218785290@1533023280809/Aerial-view-of-Kochendorf-double-navigation-lock-left-powerhouse-right-and-tailrace_Q640.jpg)
Aerial view of Kochendorf double navigation lock (left), powerhouse... | Download Scientific Diagram
Belfast's first new navigation lock in over 250 years opening gates on Tuesday | BelfastTelegraph.co.uk
![Navigation lock operating principle for the migration of fish. Rhône... | Download Scientific Diagram Navigation lock operating principle for the migration of fish. Rhône... | Download Scientific Diagram](https://www.researchgate.net/publication/311455620/figure/fig25/AS:459118352834575@1486473753954/9-Navigation-lock-operating-principle-for-the-migration-of-fish-Rhone-locks-example.png)