February 26th – The water level at Chasewater is lower than I’ve seen it for a while. Interestingly, rather than open the valves fully, there’s a good flow into the canal, and the balancing culvert between the Nine-Foot pool and Spillway has been opened, allowing a steady stream of water to flow into the Crane Brook via the drain system under the canal.

I understand why the level is being dropped – with the dam being permeable, if installing drains you want the installation to be as dry as possible – but I’m puzzled by the method. It has, however, been convention since the original dam works to allow the reservoir to overflow every spring, so perhaps this is to irrigate the spillway marsh as it would be normally.

Interesting too to see the white scale around the lowered waterline. It that salt, or something else?