 The houses in Gumbsweiler’s original built-up area stand safe from flooding at the foot of the "Kleine Höhe" ("Little Heights") and near the bridge crossing.Until the 20th century, the Glan flooded regularly, especially when the Steinalb fed vast amounts of water into it, and the river’s course changed time and again.In a later phase of settlement, the even north slope of the heights was settled.