NORTH FORK BLACK HAWK CREEK
Lateral migration caused by the meandering stream exposed two 26-inch diameter pipelines that cross North Fork Black Hawk Creek in Iowa.
Submar graded the project site to create uniform contours as necessary. The Submar Mat System, a system of articulating concrete revetment mattresses, was then installed atop each exposed pipeline to armor and protect them from further pipeline exposure or damage. Three Longitudinal Peaked Stone Toe Protection (LPSTP) systems were installed along the toe of the right-descending bank to protect the toe from erosive scour and prevent further pipeline exposure.