Dimensions of dams constructed by Eurasian beavers released in 2008 on the Allt Coire an t- Seilich Burn in Inverness-shire, Scotland, and installed Passive Integrated Transponder (PIT) loop (PIT Loops (PL)) dimensions, detection range (distance from loop at first detection) and detection efficiency (percentage of 30 tags detected when manually passed through the loop).

Measurements: Dam Crest Width—distance across the top of structure; Dam Height—distance from the water surface to top of dam; Water Depth Below Dam—distance from stream bed to stream surface. Dam 2 was original installed as a Beaver Dam Analogue (BDA) with fence posts driven into the stream bed in 2007 to encourage recently released beavers to build, this has been added to and now maintained as a beaver dam. *In spring 2016 an additional dam (Dam 5) was constructed on the Dam 1 by-pass channel.