No. A water mend happens after the line and leader have landed. Mending before they land is an aerial mend.

The two are one family. A mend, in the current definitions, is manipulating fly line layout by rod movement after the stop on a delivery cast, and the family splits on timing alone:

• Aerial mends — before the line and leader land.
• Water mends — after the line and leader have landed.

So the statement reverses the timing. That is not a hair-splitting distinction: it tells you which part of the cast you can still influence. Before the line lands, rod movement changes the layout that arrives on the water. After it lands, you are moving line that is already lying there.

In a lesson the names keep the exercise honest. If you ask for an aerial mend, you want the mend completed before touchdown; calling a late one a water mend hides the error. In an exam answer, quote the timing from the definition — before landing versus after — rather than the labels alone.

Source

Defined in the FFI Fly Casting Definitions (August 2025); terms on this site follow the same FFI Fly Casting Definitions.