It is a good course in terms of having relatively flat water.
The search was to be blessed with absolutely flat water.
They are not intended for anything other than flat water.
The first half hour you will raft on Grade 1 flat water.
"At the top end, if we have 25 knots of southwest wind and flat water, those are good conditions."
Suddenly the cool flat water looked a lot less inviting.
"But the boats will still be going at high speeds because of the river's relatively flat water."
The sun was low on the horizon, inches off the top of the flat water.
In its upper reaches is a region of mostly flat water and lakes.
Jazz played, and the sound of a boat echoed over the flat water.