Climate variability and associated risks in the Central Rift Valley (CRV) of Ethiopia put farmers under fragile situations. Although tef (Eragrostis tef) is an important cereal crop in Ethiopia, crop responses to water studies are scanty. Thus, ETc and Kc of three tef varieties determined and long-term climatic conditions of three tef growing areas viz. Alemtena, Debre Zeit and Melkassa analyzed. Seasonal ETc 289.5, 378.5 and 387mm, recorded for DZ-Cr-37, DZ-01-196 and DZ-01-354, respectively. The pooled Kc values were 0.3, 1.0, 1.2 and 0.7 for initial, development, mid-season and late-season...