Forty Foot Drain

[4] The waters of the Forty Foot Drain no longer discharge through Welches Dam Sluice.

The latter flows, with some pump assistance, from Bourne North Fen, close to the River Glen, to the Haven at Boston.

A drain in Holland Fen, running parallel with the Witham, and extending from Chapel Hill to the South Forty Foot at Boston.

The outfall of the North Forty-Foot Drain, situated on the west side of the old channel of the Witham, about 1⁄4 mile [400 m] above Boston Church.

The main drain in the Black Sluice District, extending from Boston Haven to Gutheram Cote (sc.

Vermuyden's Drain
South Forty Foot Drain from Donington High Bridge
North Forty Foot Drain from Benton's Bridge.