The northwest Michigan Lake Michigan coast runs from roughly the Muskegon River north through Pentwater, Ludington, Manistee, Frankfort, the Leelanau Peninsula, Grand Traverse Bay, and Charlevoix to the southern end of the Beaver Island archipelago. Chris Izworski tracks it as a distinct sub-region because it contains the highest concentration of drowned-river-mouth lakes on the Great Lakes, the deepest sub-basin on Lake Michigan in Grand Traverse Bay, and one of the most distinctive sand spit and dune systems on the lake at Sleeping Bear Dunes National Lakeshore. The shoreline transitions from south to north from the perched-bluff and dune coast typical of southwest Michigan into the deeper, more sheltered embayments characteristic of the upper lake.
Sub-region: Northwest Michigan Lake Michigan coast, Muskegon River to Beaver Island archipelago entrance.
Major communities: Pentwater, Ludington, Manistee, Frankfort, Empire, Leland, Northport, Suttons Bay, Traverse City, Elk Rapids, Charlevoix, Petoskey.
Lake datum: 577.50 feet IGLD85, the Lake Michigan-Huron datum.
Anchor years: 1986 cycle high, 2013 modern low, 2020 record monthly high at 581.70 feet.
Drowned river mouth lakes: Pere Marquette Lake, Manistee Lake, Betsie Lake, Crystal Lake, Glen Lake, Lake Charlevoix.
State jurisdiction: Michigan EGLE, NREPA Parts 325 and 303.
The basinwide Lake Michigan-Huron level on the homepage applies along the entire coast. Northwest Michigan is meaningfully different from southwest Michigan in shoreline character despite sharing the same lake datum, because the coast bends from southwest-facing to north-facing through the Leelanau Peninsula and Grand Traverse Bay. The wave climate is consequently different: the Leelanau coast and Grand Traverse Bay receive less wave energy from the dominant west and northwest winds than the southwest coast does, while the Charlevoix and Petoskey coast at the north end of the sub-region faces back into the lake and re-acquires significant wave exposure.
The 2019 to 2020 high cycle tested shoreline along this coast, but the property-owner concerns are more varied than in southwest Michigan because of the diverse shoreline character. Frankfort, Empire, and the Sleeping Bear coast experienced significant beach narrowing and dune scarp retreat. Grand Traverse Bay experienced more measured impact because of the bay's shelter, while still seeing shoreline erosion along exposed west bay segments. The drowned-river-mouth lakes responded to lake level with corresponding rises that affected dock infrastructure, low-elevation cottage property, and marina operations.
The Pentwater to Frankfort coast at the south end of the sub-region includes the federal harbors at Pentwater, Ludington, Manistee, and Frankfort and the small drowned-river-mouth lakes at each of them. Ludington also includes the Ludington Pumped Storage Project, the large electric utility facility that uses Lake Michigan water for daily storage. Property concerns include shoreline armoring along the open-lake coast, dock and harbor infrastructure at the river mouths, and the interaction between lake level and the inland lake systems.
The Sleeping Bear and Glen Lake area covers Sleeping Bear Dunes National Lakeshore on the outer coast and the inland lake systems at Glen Lake, Crystal Lake (south of the park), and the smaller lakes within and adjacent to the park boundary. This is the most dramatic dune coast on Lake Michigan and one of the most photographed shoreline sections in the Great Lakes. Federal jurisdiction within the National Lakeshore removes most private-shoreline regulatory questions, but in-holdings within the park and the surrounding private property have their own considerations.
The Leelanau Peninsula coast from the south end at Empire around through Leland and Northport down to Suttons Bay forms the west wall of Grand Traverse Bay. The peninsula has a north-facing outer coast on Lake Michigan and a south-facing inner coast on West Grand Traverse Bay, with different exposure regimes on each side. The coast is heavily developed with vacation and year-round residential property, vineyards, and small resort communities.
Grand Traverse Bay is a substantial deep-water bay that splits at its south end into East Grand Traverse Bay and West Grand Traverse Bay, with Old Mission Peninsula running between them. Traverse City sits at the south end of the bay. The bay's depth (deeper than 600 feet in places) makes it one of the warmest deep-water sections of Lake Michigan in summer and the coldest in late winter. Property concerns in this section include shoreline along both inner-bay shores, dock and marina infrastructure, and the wide range of water depth that occurs within short distances of shoreline.
The Charlevoix and Petoskey coast at the north end of the sub-region includes the harbor and federal channel at Charlevoix, Lake Charlevoix (the second-largest inland lake in Michigan), Bay Harbor and Petoskey, and the north-facing coast through Harbor Springs and Cross Village. This section has substantial high-end shoreline property and faces back into the open lake with significant wave exposure from the northwest.
The Michigan OHWM on Lake Michigan at 581.5 feet IGLD85 applies along the entire coast, with the standard NREPA Section 32502 framework. The diverse shoreline character of this sub-region means that OHWM application and shoreline-protection permitting both vary meaningfully from one segment to the next. Bluff property has different concerns than sand beach property, which in turn differs from inland lake property on Lake Charlevoix or Glen Lake.
The interaction between Lake Michigan level and the drowned-river-mouth lakes is a particularly distinctive feature of this sub-region. Lake Charlevoix, Pere Marquette Lake, Manistee Lake, and the smaller drowned mouths track Lake Michigan-Huron level closely but with their own short-term variability driven by inflowing rivers and local wind. Property owners on these inland lakes experience a combined lake-level and weather signal that differs from open Lake Michigan shoreline.
For a current reading, see the live dashboard. For broader Lake Michigan context, see Lake Michigan. For neighboring Lake Michigan sub-regions, see Southwest Michigan, Sleeping Bear, Beaver Island, and Door County. For the Mackinac transition to Lake Huron, see Mackinac.