RESERVOIR OPERATION IN VIEW OF EFFECTIVE UTILIZATION OF LIMITED WATER IN SEMI-ARID AREAS THE CASE OF GUMSALASA EARTHEN DAM IRRIGATION SCHEME IN TIGRAY, ETHIOPIA

摘要

Tigray is one of the semi-arid and drought-prone regions of Ethiopia. The rainfed agriculture is characterized by low productivity and the region faces an average annual cereal food deficit of 180 000 t. Realizing these problems, the regional government has been engaged in earthen dam irrigation development activities since 1995. So far 44 earthen dams with related irrigation facilities have been constructed.