Landslide dams cause two types of floods: (1) upstream flooding as the impoundment fills, and (2) downstream flooding resulting from catastrophic failure of the dam. A landslide dam may last for a few hours or for thousands of years, depending on: (1) rate of inflow to the lake (2) size and shape of the dam (3) physical character of the materials that comprise the dam, and (4) rate of seepage through the dam. This paper discusses (1) modes of flooding resulting from landslide dams (2) characteristics of failure of landslide dams (3) mitigative (i.e., remedial) measures used to reduce flood hazards from landslide dams, and (4) case histories in which mitigative measures have been used, both successfully and unsuccessfully. Mitigative engineering measures can reduce the hazard associated with landslide dams by preventing the failure of most landslide dams, or at least by reducing the severity of possible flooding.
Schuster, R. L., & Evans, S. G. (2011). Engineering Measures for the Hazard Reduction of Landslide Dams (pp. 77–100). https://doi.org/10.1007/978-3-642-04764-0_2