H-13 is a county-designated highway in the Upper Peninsula of the US state of Michigan that runs north–south for approximately between Nahma Junction in Delta County and the Munising area in Alger County. The highway is also signed as Federal Forest Highway 13 (FFH-13), a Federal Forest Highway between Nahma Junction and Wetmore. The roadway runs through rural national forest lands providing access to several campgrounds and parks. The area contains several lakes as well. The Forest Highway System dates back to the 1920s, and an earthen roadway was present along the route of FFH-13 by the 1930s. It was paved by the late 1940s and added to the county-designated highway system in the 1970s. A section of H-13 in Alger County originally continued north to Miners Castle, but the roadway designation was truncated in the first decade of the 21st century. Route description H-13/FFH-13 starts at an intersection with US Highway 2 (US 2) west of Moss Lake. The roadway runs north crossing a line of the Canadian National Railway. It heads through the Hiawatha National Forest, running parallel to the Sturgeon River. H-13/FFH-13 crosses the river near the Flowing Well National Forest Campground on a T-beam bridge built in 1941. The road meanders from there northeasterly through rural Delta County forests, passing to the west of Dana and Skeels lakes and crossing several small streams. It crosses into the southeastern corner of Alger County near Straits Lake. The road continues northeasterly and then meanders back and forth along the Alger–Schoolcraft county line in an area dotted with several lakes. H-13/FFH-13 crosses east into Schoolcraft County completely and provides access to the Pete's Lake National Forest Campground near the lake of the same name. The road shifts back westerly to follow the county line near the Widewaters National Forest Campground; from here north the forest highway will follow the county line north to the northwestern corner of Schoolcraft County. Along the way, H-13 meets the southern terminus of the unsigned H-09. Once the road crosses back into Alger County completely, it provides access to Wagner Falls State Park and passes Hanley Field, a private airport south of Wetmore. The forest highway crosses another branch of the Canadian National Railway south of the junction with M-28/M-94 in Wetmore. At that junction, the FFH-13 designation ends and H-13 continues north as a gravel surface along Connors Road through Munising Township. The