Yes 1975/76 were the years of the droughts, locally Ladybower and Derwent water were very low and the foundations of the flooded village of Ashopton (these have been seen in later years of drought). Passage through locks on the canals was restricted and in some places locks were chained up before dusk. Regarding severe winters the very first I can remember was 1962-63, of course as a child we had snow every winter, 1978-79 I ran a Cortina estate then and used chains, these days I always put on my snow tyres. Regards Alan