slack+water

Slack water is also knowns as "still" water. Slack water is when there is no high tide and no low tide and the water is not moving. This last about 20 minutes or so. Slack water has no movement because there are no currents causing movement.When a tidal current flows to the ocean it causes an ebb tide. The time period when there are no tidal currents, the still water forms betweet the flood tide and ebb tide. There is not very much to know about slack water but if you read more about Tidal currents you can learn a bit more.