US Army Corps of Engineers
Jacksonville District Website

The needles have been set in place in the needle slot in the bottom of the lock chamber and secured to the I-beam girder across the end of the lock chamber, the first step in isolating the lock chamber so it can be dewatered.
The needles have been set in place in the needle slot in the bottom of the lock chamber and secured to the I-beam girder across the end of the lock chamber, the first step in isolating the lock chamber so it can be dewatered.

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Photo by: Erica Skolte |  VIRIN: 180605-A-ZO284-057.JPG