Eggs will hatch in 6-8 weeks in general. More often found in pools than riffles, likely because of available cover rather than depth. May favour human alterations such as bridges which provide extra cover for them. Siltation has been identified as being a problem, likely because of covering up nests. Individuals do not appear to migrate on streams although some seasonal movement may occur.
Hibernation Are active all winter.
Can survive in water with very low oxygen concentrations. Water body must not freeze solid. In streams, juveniles more apt to be found in deep pools. During winter mudpuppies are found in waters with slow to moderate current, often near outlets. Design Criteria Vegetation Prefers some submergent vegetation but this is likely more important for juveniles.