Digswell Lake is in the Mimram Valley, to the north of Welwyn Garden City.
It lies on the north side of Bessemer Road near its Welwyn end and to the west of the East Coast mainline railway, Welwyn Viaduct; access is from Digswell Park Road.
For satnav, use AL6 0ST
Grid reference TL 2417 1504 ( X: 524500 m Y: 215000 m)
For map, paste this link into your browser: