It links the Dortmund - Ems Canal at Datteln to the city of Hamm .
The Datteln - Hamm Canal ( German : Datteln - Hamm - Kanal ) is a canal in the German state of North Rhine - Westphalia .
Datteln - Hamm Canal links the Dortmund - Ems Canal at Datteln - Hamm - Kanal to the city of Hamm .
The Datteln - Hamm Canal ( German : Datteln - Hamm - Kanal ) is a canal in the German state of North Rhine - Westphalia .