I was also confused by this, I had always (perhaps naively) assumed that the canal used salt water throughout. I did some searching and found this article. > G

I was also confused by this, I had always (perhaps naively) assumed that the canal used salt water throughout. I did some searching and found this article. > Gatun Lake, which forms a key stretch of the canal system and provides fresh water for its locks, saw little rain this year, as El Niño triggered a withering drought. https://fortune.com/2023/12/04/panama-canal-dry-backed-up-brutal-drought-shippers-paying-4m-jump-queue/ https://fortune.com/2023/12/04/panama-canal-dry-backed-up-br...