Below is a map of where I have been counting canal boats - I don't really know why I'm doing it yet! If you click on the red dots you'll open a bubble which gives you a list of dates and the number of boats at that spot on those dates. Some of them have photos (Old Ford Lock for example) but most haven't and I'm working on that *(I've just noticed that the data is not the latest set either - it's all a bit experimental at the moment!).
I am also hoping to convert the data I have into eye-friendly charts, a task that has so far proven too much for me - I would be grateful for any tips.