The Dales Council was formed after Aencar Burlisk, the self-proclaimed King of the Dales, was defeated in the Year of Singing Shards, 1044 DR, and his campaign to unite the dales under one rule was ended.
During the late 14th century DR, the meetings mainly concerned the growing threat of Drow in Cormanthor and the Zhents (Zhentarim), but also included aggression from Sembia and border disputes between neighboring dales.
The expansionism of Netheril was the direct cause of four dales leaving the Dales Council in the 15th century. In 1418 DR, Featherdale was bloodlessly annexed by Sembia when investors bought the majority of the land and replaced the administration. In 1420 DR, Tasseldale was overtly invaded by a Sembian mercenary army. In 1422 DR, High Dale responded to the inaction of the council by joining the nation of Cormyr as a protectorate. Throughout this period, Scardale was gradually infiltrated and then bloodily conquered by a Sembian mercenary army, adding it to Sembia's holdings. In 1425 DR, the remaining dales reaffirmed the Dales Compact and restored the Standing Stone as a sign of unity, and by 1479 DR, the town of Ashabenford in Mistledale had become the permanent seat of the Dales Council.
Sometime after 1479 DR, Scardale gained independence from Sembia and rejoined the Dales Council. After the defeat of Netheril in 1487 DR, Featherdale and Tasseldale also returned, quickly followed by High Dale separating from Cormyr's protection and rejoining as well.