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阿坝地处青藏高原东南缘,横断山脉北段,居长江、黄河及其主支流上游。地理位置界于东径100°30′至104°27′,北纬30°35′至34°19′之间,是藏民族聚居区。 本州属高山峡谷地形,河流、湖泊较多,由于主要山峰在自治州中部突起,以查镇梁子分水把河流分成两大水系:山脉以北的白河、黑河等婉蜒向北注入黄河,属黄河水系,汇水面积1.6万余平方公里,山脉以南的白龙江、岷江、大渡河等穿绕重山向东注入长江,属长江水系,汇水面积6.7万多平方公里。
Aba is located in the southeast margin of the Qinghai-Tibet Plateau, the northern section of the Hengduan Mountains, the Yangtze River, Yellow River and its main tributaries upstream. The geographical boundary is between 100 ° 30 ’and 104 ° 27’ east and between latitudes 30 ° 35 ’and 34 ° 19’N, and is a Tibetan settlement. The state is a mountain canyon topography, rivers, lakes, as the main peaks in the central part of autonomous prefectures to check the town Liangzi diverting the river into two major systems: north of the mountains of the White River, Heihe, etc. into the Yellow River into the north, is the Yellow River Water system and catchment area of 16,000 square kilometers. Bailongjiang, Minjiang and Dadu rivers south of the mountains are injected into the Yangtze River to the east of Chongshan Mountain, which belongs to the Yangtze River water system. The water catchment area is more than 67,000 square kilometers.