River Whitewater

Greywell Mill on the upper reaches of the River Whitewater.

The River Whitewater flows through Hampshire and is a tributary of the River Blackwater near Swallowfield. Its headwaters flow over chalk and there is little pollution making the river Whitewater rich in wildlife. It was noted on Janssen's map of Hampshire of 1646.

Hartley Wintney lies on the river Whitewater.

The river contains a variety of species of fish including brown trout, dace, perch, pike and chub. Fishing on part of the river is controlled by Farnborough and District Angling Society which has separate coarse and fly fishing sections..