The Merloux torrent was the village's sole water source

The Merloux is a small torrent in Saint-Maurice-de-Beynost that was for a long time the village's only source of water supply at the Le Bichet fountain, until 1845. It also powered the first mill of the commune, the Merloux mill, built in 1835. Its source also hosted a pilgrimage of the local Armenian community until the Second World War.