The amount of sediment carried to Presque Isle beaches
by the longshore current is dependent on the amount of
erosion along a 20 mile stretch of bluffs west of the park.
These bluffs are generally considered the major source of
beach building material for Presque Isle.
Beaches also change in the short term with the seasons.
Waves in summer and winter are different in size and
strength. In summer, waves tend to be low, gentle, and
farther apart. These waves deposit sand on shore to form
a wider beach with a flatter profile. As winter approaches,
waves become choppier, more forceful, and more frequent. Beaches are often eroded to become narrow and
steep. Winter storms can cause large, powerful waves that
crash onto the beach and pull sand offshore.
The amount of sediment carried to Presque Isle beaches
by the longshore current is dependent on the amount of
erosion along a 20 mile stretch of bluffs west of the park.
These bluffs are generally considered the major source of
beach building material for Presque Isle.
Beaches also change in the short term with the seasons.
Waves in summer and winter are different in size and
strength. In summer, waves tend to be low, gentle, and
farther apart. These waves deposit sand on shore to form
a wider beach with a flatter profile. As winter approaches,
waves become choppier, more forceful, and more frequent. Beaches are often eroded to become narrow and
steep. Winter storms can cause large, powerful waves that
crash onto the beach and pull sand offshore.
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