In October 1969, Emperor Haile Selassie inaugurated a water supply system for the town built at a cost of Birr 170,000.

[3] Construction on the 99 kilometer road between Chole and Dera was completed and opened for traffic 15 August 2009, at a cost of over 146 million Birr.

[1] Based on figures from the Central Statistical Agency in 2005, Dera has an estimated total population of 116,731, of whom 69,367 are men and 47,364 are women.

But it could be related to the long running plain topography of the area that stretches between the City of Adama or Nazareth and the town of Itayya.

In one of the wars that has been fought between 1880 and 1886 the Arsi warriors under the leadership of Lenjiso Diga and Irresso Tongo had captured the Menelik's mistress Woizero Bafana.

During her stay as prisoner of war in the hands of Arsi warriors all respect and protection has been accorded to her both as woman and in her status as mistress of the King.