Hi, Welcome to OpenStreetMap.

I have to say that your changes do not reflect the ground truth. 

This section of road is not flood prone, only the section drawn in the water is flood prone and that is tagged as a ford.

This section of road is not a ford nor a stream.

This is a tertiary road.

It is a through road for vehicles not merely destination.

There is no posted advisory maxspeed limit.

There are signs, (at Ipswich Road and the junction of Mill Lane, and Knights Lane) that are opened (by the council) to display a flood warning when appropriate.

Thus I've reverted these changes. Regards Bernard.