The Lyth Valley is a flat land, once largely marshland, which runs through the very south of Westmorland, on the edge of the Lake District National Park, between the low fells of southern Westmorland and of Furness. It reaches down to the head of the Kent Estuary. Through the valley flows the River Gilpin, joined here by the River Pool.
The flat bottom of the valley was originally bog, but it has been drained for the benefit of farmers. In recent years there has been controversy about the cost of the pumps which keep the valley drained. For some years the pumping has been funded by the Environment Agency, but after reviewing its priorities in the region the Agency decided it did not wish to continue.
There have been objections from environmentalists to a drainage regime which does not take account of the valley's contribution to biodiversity. It is argued that a less intensive drainage scheme would benefit wildlife.
- Location map: 54°17’58"N, 2°50’32"W
- "Damson Day". http://www.lythdamsons.org.uk/damsonday.html. Retrieved 14 April 2017.
- "Farmers and conservationists row...". www.itv.com. http://www.itv.com/news/border/2015-10-02/farmers-and-conservationists-row-over-flood-defences/. Retrieved 13 October 2015.
- 'Bid launched to save valley' – The Westmorland Gazette July 2015
- 'Lyth Valley Pumps To Stay On Until End Of 2020' – Lakeland Radio
- The Lyth Valley – RSPB