Lieu historique national du Canada du Blockhaus-de-Merrickville is a Conservation area located in Grenville, Ontario.

• Latitude: 44° 55' 0'' North   (decimal: 44.9166999)
• Longitude: 75° 50' 15'' West   (decimal: -75.8375000)
• Topography Feature Category: Conservation area
• Geographical Feature: Lieu historique national
• Canadian Province/Territory: Ontario
• Location: Grenville
• Atlas of Canada Locator Map: Lieu historique national du Canada du Blockhaus-de-Merrickville
• GPS Coordinate Locator Map: Lieu historique national du Canada du Blockhaus-de-Merrickville Lat/Long