„Gules, two bends wavy Or, accompanied from a shovel Or beneath and one above.“ 
The arms were granted on August 3, 1939. The wavy bend is a canting element, Beck=Bach means stream and symbolises in this case for the Dortmund-Ems channel in the municipality. The two shovels symbolise the agricultural character of the village at the time. The colours are derived from the colours of the State of Münster, as the village historically belonged to Münster. Another explanation for the shovels is that they represent the two plants of the Niemeyer company, manufacturers of agricultural equipment, in the municipality.
This image is taken from www.ngw.nl – Heraldry of the World –  an international civic heraldry site by Ralf Hartemink. http://www.ngw.nl/int/dld/r/riesenbe.htm
unknown - constructed and added by Jürgen Krause