H1 2026 Evaluation
Ethiopia Reservoir Transparency
F2Opaque — Ranked #146 out of 167 countries
weight 30%
weight 20%
weight 15%
weight 13%
weight 10%
weight 8%
weight 5%
Primary source evaluated
Dimension breakdown
Data Availability
20% of total score
No current reservoir storage volume, water level, or fill percentage is publicly available for any Ethiopian dam. EEP's website (eep.com.et) publishes only installed capacity (MW) and annual generation (GWh). The Ministry of Water and Energy (MoWE) website is an administrative portal with project descriptions but no operational hydrological data. The Ethiopian Meteorological Institute (EMI) produces monthly and seasonal hydromet bulletins that reference dams and reservoirs, but these are not freely downloadable — the EMI site explicitly mentions 'Data Access Cost,' indicating a request-based paid service. The 2023 HESS paper (Copernicus) explicitly documented that 'Ethiopia has yet to share information on GERD filling, thereby hindering water management in Sudan.' Researchers have been forced to use Sentinel-1/2 SAR and Jason-3 satellite altimetry to infer GERD water levels rather than using official data. The score reflects the existence of the EMI bulletins as a minimal institutional mechanism, but the near-total absence of publicly accessible storage data.
Technical Accessibility
15% of total score
No public API exists for any Ethiopian reservoir or dam. EEP publishes no machine-readable data files. MoWE publishes PDF reports on water projects (World Bank-funded environmental assessments, energy outlooks) but no structured datasets. The EMI hydromet bulletins, even if accessed via formal request, appear to be PDF documents. The open data portal at ethiopia.opendataforafrica.org returns HTTP 403. No REST endpoint, CSV download, or open format data has been found for reservoir storage from any Ethiopian government source. A score of 5 reflects that some PDF documents exist but programmatic access is effectively zero.
Coverage
30% of total score
Capacity-weighted (v1.3.0): 0/120,000 Mm³ = 0% (GERD 74,000 + Gibe III 14,700 + Tekeze + Koka + Tana cascade; EEP publishes no public storage data). Prior justification (preserved for context): Denominator (RTI methodology): reservoirs with capacity >10 hm³. Ethiopia has approximately 15–18 reservoirs above this threshold including GERD (~74,000 Mm³), Gibe III (~14,700 Mm³), Tekeze (~9,300 Mm³), Koka (~1,900 Mm³), Tendaho (~1,900 Mm³), Beles (~460 Mm³), Gibe I (~700 Mm³), Gibe II run-of-river, Melka Wakena (~763 Mm³), Fincha-Amerti-Neshe (~700 Mm³), Gilgel Gibe I, plus several irrigation impoundments (Koga ~83 Mm³, Ribb, etc.). Zero of these have publicly accessible storage volume or fill data — neither EEP nor MoWE publishes operational data; EMI hydromet bulletins are gated behind 'Data Access Cost' (paid request). Coverage rate is 0/~17. Score reflects total absence with minimal partial credit for the fact that EEP at least lists which dams it operates.
Historical Depth
13% of total score
No machine-readable historical reservoir storage series is publicly available. Academic hydrological studies of Ethiopia uniformly note they must obtain streamflow data by formal application to MoWE's hydrology department, which controls access to approximately 490 gauging stations. The CAMELS-Eth database (published by researchers) provides 122 river flow and lake level records for the Abbay basin, but this is an academic product, not a government-maintained public archive. The EMI 'Data Access Cost' model means even what historical data exists is not freely accessible. Score of 5 reflects that some historical records do exist institutionally, but none are freely accessible online in machine-readable form.
Update Frequency
10% of total score
The EMI produces Ten-Day, Monthly, and Seasonal hydromet bulletins covering dam and reservoir conditions. If accessed via formal request, the Ten-Day bulletin would represent relatively frequent updates. However, since these bulletins are not freely downloadable and access requires contacting the Institute (with potential cost), the effective public update frequency is zero. A score of 10 acknowledges the institutional cadence exists but cannot be accessed without barriers.
Methodological Transparency
8% of total score
No publicly available documentation describes how Ethiopia measures reservoir storage, water levels, or outflows at its major dams. EEP's GERD project page mentions an internal real-time monitoring system feeding a control center database but provides no methodology documentation. MoWE and EMI publish no measurement standards or technical protocols. The 2026 JURIST commentary notes that principles like 'no significant harm' remain 'indeterminate in the absence of agreed technical thresholds,' illustrating that even in international negotiations, Ethiopia's measurement methodology has not been disclosed. The score reflects the complete absence of published methodological documentation.
Language and Usability
5% of total score
The EMI website is available in English, Amharic, Oromo, Tigrinya, and Somali — a genuine multilingual effort. EEP's website is primarily in English, and MoWE publishes some documents in English (World Bank-funded reports, energy outlooks). However, the actual data — to the extent it exists — is not accessible in any language without formal requests. The score of 30 acknowledges meaningful English-language institutional presence (EEP website, MoWE publications, EMI English interface) but reflects that usable data in any language remains inaccessible.
Evaluator notes
Ethiopia presents one of the most acute cases of strategic data opacity in the RTI 2026 assessment. The country controls Africa's largest reservoir — the Grand Ethiopian Renaissance Dam (GERD, ~74,000 Mm³ capacity, inaugurated September 2025) — yet publishes no current storage volume, water level, or fill percentage data for this or any other major dam. Ethiopian Electric Power (EEP), which operates 16 hydropower stations, limits its public communications to installed capacity (MW) and generation (GWh). The Ministry of Water and Energy functions as an administrative portal. The Ethiopian Meteorological Institute's hydromet bulletins, which do reference dam and reservoir conditions, appear to be distributed via paid formal request rather than open download. The 2023 peer-reviewed HESS study explicitly confirmed that 'Ethiopia has yet to share information on GERD filling,' forcing downstream Sudan to reconstruct dam operations using satellite altimetry and hydrological modeling rather than official data. International researchers have relied on Sentinel-1/2 SAR data and Jason-3 radar altimetry to independently monitor GERD water levels. The geopolitical context is inseparable from the transparency deficit. Ethiopia has strong strategic incentives to withhold GERD data as leverage in negotiations with Egypt and Sudan, who have called for legally binding data-sharing agreements since 2011. As of mid-2026, no binding framework governs GERD operation, and the AU-mediated talks have produced no agreed hydrological thresholds. The 2026 Atlantic Council and FPRI analyses note that real-time data sharing remains an unfulfilled prerequisite for any durable agreement. Ethiopia's position — that the dam will not cause 'significant harm' — rests on internal calculations it has not disclosed. Ethiopia scores near the bottom of the RTI index. Its institutional architecture (EEP, MoWE, EMI) exists and publishes aggregate energy statistics, but none of these institutions currently makes reservoir storage data publicly accessible in machine-readable or freely downloadable form. Improvement pathways exist — the EMI's existing bulletin cadence could serve as a transparency mechanism if bulletins were made freely downloadable — but political will for hydrological openness remains low so long as GERD negotiations remain unresolved.
Evaluated by Jaime Delgado · 2026-09-15 · Methodology v1.3.0