The Rideau Valley Conservation Authority (RVCA) has a new online tool for showing water levels for different bodies of water within its territory including Black Lake. It is an interactive tool that lets you chose different date ranges that show precipitation as well as the water level during any period of time going back several years.
The link to this site is: https://his.rvca.ca/rvcafwl/charts/PERIODIC_HG/BLACK_PUBLIC_HG.html.
