Three holes at the bottom of the 25.6-meter-high South Fork Dam are a concern for Mike Squire, Nanaimo’s manager of water resources. As part of his update on the city’s water supply at the municipality’s governance and priorities committee meeting on May 11, Squire said the three 24-inch holes, called culverts, were installed as part of the dam’s construction to allow water flow underneath them. The South Fork Dam, built in 1931 and located appr…