Grand Sable Dunes temporary closure to all public entry for visitor safety
Grand Sable Dunes are rapidly eroding into Sable Creek and Lake Superior. The area from the Ghost Forest Trail north to Lake Superior then along the shoreline to the west side of Sable Creek is temporarily closed. Follow closure signs for your safety. More »
NPS photo / Leah Kainulainen
Water resources are of prime importance at Pictured Rocks National Lakeshore. The park's science staff conducts annual inventory and monitoring projects to assess the overall condition of the park's inland lakes. By accumulating baseline data over many years, scientists can better understand each lake's natural features and therefore recognize changes when they happen – particularly human-caused changes that might require management action.
Continued monitoring will help staff separate trends that might arise from human origins (such as climate change, acid rain, invasive species, nutrient run-off, impacts from high recreational use, and chemical contaminants) from natural fluctuations.
As part of the Great Lakes Network, Pictured Rocks and other national park sites use the same testing protocols so that results may be analyzed not only for each individual park but for the Great Lakes region as a whole. The results will allow researchers to detect changes and trends on a much larger scale.
For more information...
Did You Know?
There are seven named waterfalls within Pictured Rocks National Lakeshore, plus several unnamed falls. From west to east, they are Munising, Bridalveil, Miners, Mosquito, Chapel, Spray, and Sable Falls. The sandstone outcrops of the Pictured Rocks escarpment create the many waterfalls in the area. More...