The Geul is a dynamic, free-flowing river winding through the scenic Geuldal valley in the southern Netherlands province of Limburg. Known for its natural character and exceptional ecological diversity, the Geul is one of the most biologically rich rivers in the Netherlands, supporting a wide array of rheophilic — current-loving — fish species. The river's course is punctuated by historical water mills and anthropogenic structures that create a constantly shifting mosaic of complex microhabitats, from gravel riffles and cobble runs to deeper pools and undercut banks. This habitat diversity makes the Geul a genuinely rewarding destination for anglers seeking wild, stream-adapted fish in a picturesque natural setting.