Due to the uniqueness of these systems, which function as socio-ecological systems, Small Tank Cascade Systems (STCS) were recently designated as Globally Important Agricultural Heritage Systems (GIAHS) by the FAO. The components of these tank systems and the science behind can be explained using modern day, hydrology, crop and soil sciences and socio-economic theories and serve as a rich learning platform for locals as well as international students.

Debriefing before leaving the Kapiriggama cascade Photo: Shamen Vidanage

IUCN technical team provided and facilitated an opportunity for a group of 16 undergraduate students from the Environment Studies Programme of Colby College, USA and 25 undergraduate students from the Faculty of Social Sciences and Humanities of the Rajarata University to study the operation and benefits of ancient STCS. They studied the Kapiriggama small tank cascade system in Anuradhapura District ecologically restored in 2016 by IUCN in association with the Department of Agrarian Development and other agencies including Rajarata University, with the financial support from the HSBC Water Programme. 

The Colby College Students were in Sri Lanka between 13^th to 30^th January to gain first-hand experience in relation to interdisciplinary conservation challenges. The visit was organized in collaboration with several institutions including IUCN. IUCN on 14^th January briefed the students about history, culture and heritage of Sri Lanka in Colombo and facilitated the field session on 26^th January 2018.

A well-known soil and water conservation and small tank cascade system expert, Dr P. B. Dharmasena led the field sessions. This exposure to a unique hydraulic civilization not only improve the knowledge of foreign and local undergraduates and academics but also will open up avenues for collaborative initiatives between Colby College and local institutions in Sri Lanka.

Colby group at IUCN Sri Lanka Office Photo: IUCN