Barrage du Lac-des-Joncs is a Hydraulic construction located in Baie-Sainte-Catherine; Charlevoix-Est, Quebec.

• Latitude: 48° 0' 20'' North   (decimal: 48.0055769)
• Longitude: 69° 57' 44'' West   (decimal: -69.9622830)
• Topography Feature Category: Hydraulic construction
• Geographical Feature: Barrage
• Canadian Province/Territory: Quebec
• Location: Baie-Sainte-Catherine; Charlevoix-Est
• Atlas of Canada Locator Map: Barrage du Lac-des-Joncs
• GPS Coordinate Locator Map: Barrage du Lac-des-Joncs Lat/Long