The area of Dessie city is 16,800ha and it has a liner shape. Its altitude is Mountainous and rugged topography that has altitude of 1,800–3,500m above Sea level; mean annual temperature of 15ºC–17.5ºC; mean annual rainfall of 1000-1400mm. The prevailing wind direction is east to west and the principal natural constraints for the physical expansion of the town are: The existence of Tosa and Aziwa Mountains at south west and north direction of the town, which make expansion of the town difficult.