Siwash Bay is a Bay located in Thunder Bay, Ontario and has an elevation of 325 meters.

• Latitude: 49° 35' 27'' North   (decimal: 49.5908333)
• Longitude: 86° 45' 10'' West   (decimal: -86.7527777)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 325 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Siwash Bay
• GPS Coordinate Locator Map: Siwash Bay Lat/Long