The geographical terrain is 83.7% mountainous and 11.2% cultivable. It is very rugged, except in some of the urban areas and villages that can be found in the valleys and hills. The main water system ranges from the upper stream of the long
Namhan River, which flows through the county.
Pyeongchang River, one of the streams flowing from
Odaesan, joins several streams at Jungnyeong, Danyang, and Geumgok, originating from
Sobaeksan. Danyang Stream, which has its source in
Hakseongsan,
Gyeongsangbuk-do, joins the Namhan River at Habang-ri, Danseong-myeon, together with Jungnyeong Stream flowing from Jungnyeong and
Dosolsan to Hyeoncholli, Danyang-eup, Maepo Stream from
Geumsusan to Dodam, and Geumgok Stream from Biro Peak to Gosu-ri, Danyang-eup.
Climate Danyang has a monsoon-influenced
humid continental climate (
Köppen:
Dwa) with cold, dry winters and hot, rainy summers. The county, which is situated in an inland mountainous area, epitomizes an inland climate with severe variations in temperatures. The annual average temperature reaches , with the highest at and the lowest at , and its annual rainfall averages . ==Tourism==