Radioisotope tagging and tracing techniques revealed the average home range size of five Desmognathus fuscus with 40 or more points of detection and observed over a period of 32-59 days, to be 48.4 m2 (range, 25.2 m2-114.5 m2). Of 14 salamanders studied, the maximum movement in a 24 hr period was 17.1 m (in 10 hr 25 min). Most recorded movements were of distances less than 2 m. Most movements began between 0600 and 0900 and between 2100 and 2400. The salamanders had peaks of activity at 0800 and 2300. The lowest activity was seen at 0300 and at 1600, average temperatures being 17.0°C and 29.0°C respectively. During and after rainfall the animals were often found out of the stream channel. In daylight wet periods the peaks of movement were exaggerated whereas in nighttime wet periods the movements were similar to nighttime dry periods. The two most active animals were a male and a female, the most quiescent were gravid females.