slack water

Then we went down the river as far as the Elbow, where we waited in the slack-water to hail up-bound steamboats.

No, sir; it's slack-water; or, rather, the ebb is just beginning to make.

Glen had swum and fished in it, and boated on it, until he knew its every current and slack-water pool.

It is high-water and slack-water, in Port Desire, at half-past twelve, on the days of full and change.