North Shropshire District Council are pretty vole-savvy, on the whole, but even so, they can sometimes be too enthusiatic with their bank strimming (top photo). Water voles need plenty of cover leaving, especially in an area like Edward German Drive which is full of cats. Where a water course is overshadowed by trees (middle pic) the banks become bare, so that's another area which becomes no-go for water voles. The bottom photo shows perfect, vole-friendly manangement of banks - plenty of long grass, and no rubbish or pesticides - and that's where I found burrows and a latrine this evening.
Post Script: NSDC say in the comment below that this strimming isn't their work. I'm therefore trying to find out who it might have been, so I can ask them to leave a slightly bigger margin next time.