Trails and stairs are cut into the steep banks for ready access to streams and beaches. Lawns and patios are built up to the edge of the bank, affecting the long-term stability of the slope.

The stability and hydrology analyses required topographic information that is being derived from aerial imagery, including fixed-wing drone surveys. Image processing is being used to improve the ...

A portion of Crescent Avenue in Sewickley is closed after a landslide caused slope stabilization concerns. Borough engineer ...