Trinidad and Tobago Reservoir Transparency

WASA publishes Navet Reservoir percentage levels through press releases and media updates (e.g., 96% in January 2026, 55.56% in December 2024). A Water Resources Agency portal exists at wraportal.wasaconnect.com. However, data is not available as machine-readable downloads or a structured feed — it is communicated reactively via news releases and social media rather than through a systematic open-data publication.

The WASA website and WRA portal are publicly accessible HTML pages with reservoir news. No API, no CSV/JSON downloads, no structured data endpoint. Data is embedded in press releases or news articles, requiring manual extraction. The WRA portal appears to be a notification/alert system rather than an open data repository.

Capacity-weighted (v1.3.0): 66/165 Mm³ ≈ 40% raw. WASA publishes Navet (~66 Mm³, the largest) reservoir storage data reactively through press releases. Caroni-Arena (~46.6 Mm³) and smaller reservoirs receive no systematic public reporting. Score lowered from 40 to 35 to apply a conservative discount: smaller reservoirs are entirely absent from public disclosure and even Navet's coverage is reactive (press-release only) rather than systematic. Prior justification (preserved for context): Methodology denominator counts reservoirs with capacity >10 hm³. Trinidad and Tobago has 2 qualifying reservoirs: Navet (~66 Mm³, the largest) and Caroni-Arena (~46.6 Mm³, commissioned 1981). Hollis Dam (1934-36, modest capacity) and Hillsborough on Tobago (~1 Mm³) are below the threshold. Navet receives reactive WASA press-release coverage with percentage-full figures; Caroni-Arena is mentioned in WASA documents but receives no systematic public reporting. Coverage = round(100 × 1 / 2) = 50.

Media reports mention long-term average (LTA) benchmarks alongside current readings (e.g., LTA 51.85% cited for May 2025), implying WASA holds a multi-year historical dataset internally. However, no historical time series is publicly accessible in downloadable or queryable form. Users cannot retrieve past levels independently.

WASA issues reservoir level updates to media during dry season and drought events — roughly weekly during periods of stress (e.g., 2026 Dry Season activation). Updates are situational rather than scheduled; no fixed publication cadence (daily/weekly) is institutionalised in a public channel. During wet season, updates may lapse entirely.

WASA's Water Resources Agency page describes hydrological monitoring functions but does not publish sensor specifications, measurement methodology, or uncertainty estimates for reservoir level readings. The LTA reference figure implies systematic historical collection, but the underlying monitoring protocol is not publicly documented.

English is the sole official language and all WASA communications are in English. The website is fully accessible to international users. No language barrier exists, though the absence of structured data limits usability for researchers regardless of language.