Backwater Aven is located at the western end of the Long Bypass, in area surrounded by The Bung and the Far Canal. This was first dug in 1992 for a short while before leaving for grander projects. A return in July 2011, resulted in a new extension. The story about the dig can be found in Issue 154 of The Derbyshire Caver, published Feb 2020.
The Environment Agency have installed EA water depth logger at Goosehill Bridge, Castelton. This is now live at: https://check-for-flooding.service.gov.uk/station/9595 . The water depth is updated every 15 minutes and the datum is the crest of the weir that was installed in 1984/5 by TSG and a group from Manchester Poly. The metre ruler on the left bank of the river when looking downstream from the bridge has the same datum so the levels on the web should be the same as the levels on the ruler.. The outputs contributing to the total flow are Peak Cavern, Slop Moll, Peakshole Sough and Russet Well.
Read more: EA Peakshole Water level Logger at Goosehill Bridge, Castleton