The best anchorage is at a depth of 15 feet on the edge of a cliff near the shore. It slopes gently from the shore to a depth of 20 feet, then the cliff drops steeply to about 100 feet. Near the shore, heading north, across large rocks near the shore, many fish can be seen in less than 10 feet of water.
More details available at Scubarama’s Memphrémagog page:
in French,
English (Google Translate).