Not rated — no significant reservoirs
Timor-Leste is set aside from the ranking rather than graded. Having no significant reservoir storage is a geographic fact, not a transparency failure — so assigning an “F” would be misleading.
H1 2026 Evaluation
Timor-Leste Reservoir Transparency
N/AWhy it's not rated
No significant storage reservoirs (Belulik Leten is a small irrigation dam).
Where its water comes from
River intakes and groundwater (EDTL and local systems).
Reference source
EDTL — Electricidade de Timor-Leste (national electricity utility)
https://www.edtl.tlEvaluator notes
Timor-Leste is one of Asia's youngest nations (independent 2002) and one of its least developed in terms of water data infrastructure. The country has no significant hydropower storage reservoirs — its electricity relies on EDTL-managed diesel generation with small-scale run-of-river hydro contributions. The primary managed water structures are small irrigation dams and weirs serving agriculture. ESA satellite studies tracking surface water dynamics across Timorese water bodies confirm significant long-term water body shrinkage: a net loss of approximately 47.6% of surface water extent between 1985 and 2025 across monitored sites. This is critical evidence that Timor-Leste faces growing water scarcity without the monitoring infrastructure to track it. The 2025 ACIAR project on integrated catchment water management represents a first step toward systematic monitoring but is years away from producing nationally published data streams.
Evaluated by Jaime Delgado · 2026-09-15 · Methodology v1.3.0