The Yushan area is an important watershed for most of the main river systems of central, southern, and eastern Taiwan. The Chenyoulan, Jyunda, Nanzaisian, Laonong, and Laku Laku rivers all flow from Yushan, spreading out over Taiwan in a “V” formation. The Chenyoulan stream has its origins along the Jinmentong cliffs. As it cuts through land traversed by a fault line, it has created one of the best examples of headway erosion in Taiwan. This, along with several major waterfalls (including Yunlong and Yinyu), are widely acclaimed scenic points in the park.
Alpine lakes, such as Dashueiku, Tafen Pond, Jiaming Lake nearby the border, and Tienchih, formed from rain and melting snow in the shadow of surrounding mountain peaks. Their fragile ecosystem is particularly affected by environmental changes and the impact of visitors. Please take special care to keep these areas pristine during your visit.
Although Taiwan is situated in a subtropical climate zone, Yushan’s high altitudes give it climactic variations not commonly found in this part of the world. At heights above 3,500 meters, the average annual temperature is a chilly 5℃. Snow typically arrives with winter about December and lasts until April. Annual temperatures in areas between 2,500 and 3,500 meters above sea level average around 10℃. Snows are infrequent here, as precipitation at this altitude falls mainly between May and September. In all areas of the park above 2,000 meters, the four distinct seasons make a trip to Yushan a unique experience every time.