Dergajen
Dergajen was a woreda in Enderta Province, in Tigray Region, Ethiopia. Its administrative center was Kwiha; now is a tabia located 19 kilometers east of Kwiha, Ethiopia. The administrative center of the tabia is located in the village of Aragure. A weekly market is organized in Aragure. According to the 2007 census, 9524 people were living in the tabia, which results in a population density of 68 inhabitants per square kilometer.
Geography
Dergajen is located on the hydrographic divide between the Tekeze catchment in the west and the endoreic Afar basin to the east. The western part of Dergajen consists of gentle slopes descending in a western direction. These slopes have an elevation of 2400 to 2600 meters above sea level. The eastern part of the tabia consists of steep slopes, descending into the Afar lowlands. The administrative center is located in Aragure, a village which is centrally located in the tabia. In 1938, Araguren counted approximately 700 inhabitants. At that time, there was a shop, a fountain, a telephone office and a health post. Araguren is located on the left bank of a river starting in the higher May Serakit reservoir and drains to the south-southwest to the large Chichat reservoir, which was built in 1984. The dam for the Mai Serakit reservoir was built between 2006 and 2009. In the southern part of the tabia a second large reservoir exists: the Hashenge reservoir which was built in 1996-97. A last reservoir, at the west, is Arato.Geology and soils
The following geological formations are present in this locality:- Agula Shale
- Mekelle Dolerite
- Antalo Limestone
- Quaternary alluvium and freshwater tufa
- Gently undulating Agula shale plateau with dolerite
- * Dominant soil type: stony, dark cracking clays with good natural fertility
- * Associated soil types
- ** rock outcrops, stony and shallow soils
- ** red-brownish loamy soils with good natural fertility
- * Inclusions
- ** deep, dark cracking clays on calcaric material with good fertility but poor drainage