Saint Lucia Reservoir Transparency

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: Saint Lucia has the most significant reservoir infrastructure in this evaluation group. The John Compton Dam (formerly Roseau Dam) on the Roseau River in Millet is a concrete-face rock-fill dam with a design capacity of approximately 3 million m³, serving as the primary water source for northern Saint Lucia. WASCO (Water and Sewerage Company Inc.) manages the dam and its associated water treatment plant. WASCO does not publish reservoir level data through a public data portal or API; however, during drought and dry-season emergencies, WASCO and the government issue statements that include specific water level readings. A documented example: WASCO reported that John Compton Dam was at 318.6 ft, some 14.4 ft below the spillway, dropping approximately six inches per day during a dry-season emergency. Another advisory stated levels were '30 inches below the spillway'. These disclosures — while crisis-driven and not systematic — confirm that WASCO collects precise dam level data. The WASCO website (wascosaintlucia.com) has a dedicated Drought Centre section and publishes news updates, but no persistent data dashboard.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: The WASCO website is modern and functional, with a Drought Centre section (wascosaintlucia.com/media/drought-centre) and a News and Updates section. Water level disclosures, when made, appear as text articles on the website and in government press releases (govt.lc/news). There is no API, no downloadable dataset, and no structured data format. Accessing current dam levels requires checking WASCO news releases manually, with no consistent publication schedule. The information, when available, is in plain English HTML text.

Capacity-weighted (v1.3.0): ~0.75/3 Mm³ ≈ 25% (John Compton dam dominates; WASCO publishes only crisis-driven press notices during drought — no structured feed, partial signal credit only). Prior justification (preserved for context): Methodology denominator counts reservoirs with capacity >10 hm³. Saint Lucia has zero qualifying reservoirs: John Compton Dam (Roseau Reservoir) was originally designed for ~3 Mm³ and has been further reduced by sedimentation from Hurricane Tomas (2010) and subsequent storms — well below the 10 hm³ threshold. Southern Saint Lucia relies on river intakes and groundwater with no impoundments. With no qualifying large reservoirs, the coverage dimension is structurally zero. WASCO's reactive disclosure of John Compton levels remains captured in the data_availability dimension.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: No systematic historical reservoir level time series is publicly available. Individual news articles quoting WASCO dam level readings during past droughts provide isolated data points (e.g., the 2015 water emergency, subsequent drought years), but these are scattered across news archives rather than in a downloadable dataset. WASCO's annual reports, if published online, have not been found to include historical dam level tables. The British Dams Society published a case study (2012) on restoring Roseau Reservoir capacity after Hurricane Tomas, confirming the reservoir's importance but not constituting a public data archive.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: WASCO publishes water level updates during dry-season emergencies and drought conditions — approximately monthly or more frequently during crisis periods, infrequent or absent during normal conditions. Government updates through govt.lc/news supplement WASCO communications. This event-driven publication cycle means update frequency is highly variable: daily updates during acute crises, months-long gaps during normal conditions. The Drought Centre page may provide more regular updates during declared drought emergencies.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: WASCO communicates dam levels in feet relative to the spillway elevation, which implies a gauge-based measurement at a fixed datum point — but no formal methodology documentation (gauge location, calibration protocols, measurement frequency, data quality standards) has been found on the WASCO website. The British Dams Society paper describes the dam's physical characteristics and the 2010 Hurricane Tomas siltation impact, providing engineering context. Wikipedia documents the dam's design capacity. WASCO's Adaptation Fund Concept Note (2025) discusses climate-resilient water supply but does not define monitoring methodology.

English is the sole official language of Saint Lucia and all WASCO communications, government advisories, and media reports are in English. The WASCO website, Drought Centre, government portal (govt.lc), and all referenced news sources are English-language. If a data portal were established, it would be immediately accessible to international researchers without translation.