2019 Map of Thompsons Harbor

About this map

Thompson's Harbor State Park dominates this northern stretch of Michigan shoreline, preserving a landscape of coastal dunes and wetlands along the edge of Lake Huron. The map reveals a complex aquatic geography where Thompsons Harbor and North Bay meet the rocky points of the coastline, including Observatory Point and Black Point. Inland, the northern reaches of Grand Lake are defined by an archipelago of named landforms such as Indian Island, Allen Island, and Three Sisters Island. The drainage patterns are clearly visible through Grand Lake Outlet and several creeks, including Schalks Cr and Monaghan Cr. Local road networks like Old State Rd and Misiak Hwy provide access to the various points and bays, reflecting the area's development around its significant natural water features and shoreline topography.