[2][3] The coalescence is north of a zone of gently north-sloping land forming Wheelerstreet, Enton Green and the little manor of Tuesley.

For centuries the latter comprised a very modest house and farmstead, dwarfed by the adjacent Busbridge Park, the stream of which drains Busbridge Lakes, the former mid and lower fish ponds, the upper one having been drained on becoming part of that stream.

The Environment Agency measure water quality of the rivers in England.

Each is given an overall ecological status, which may be one of five levels: high, good, moderate, poor and bad.

There are several components that are used to determine this, including biological status, which looks at the quantity and varieties of invertebrates, angiosperms and fish.