Several towns in the Puyallup River valley in Washington state, including Orting, are built on top of lahar deposits that are only about 500 years old.
==Nevarna področja==Med posebno nevarne ognjenike, ki bi lahko povzročili velike laharje, spadajo Mount Rainier v Washingtonu (ZDA), Mount Ruapehu na Novi Zelandiji in Galunggung v Indoneziji.