Singapore Reservoir Transparency

Coverage is 0 (no national reservoirs >10 hm³ with public data). Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: PUB (Singapore's national water agency) does not publish reservoir storage levels, fill percentages, or volumetric storage data for any of Singapore's 17 reservoirs. The national security posture — five reservoirs are within Singapore Armed Forces restricted zones — and PUB's water security doctrine mean reservoir operational data is classified. What IS published on data.gov.sg: real-time water level sensors at drain and canal monitoring points (for flood management), and historical drinking water quality data (2019–2022). The data.gov.sg open data portal is technically excellent but contains no reservoir storage information. PUB's website and annual Water Quality Report discuss Singapore's water diversification strategy but publish no reservoir fill data.

Coverage is 0 (no national reservoirs >10 hm³ with public data). Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: Singapore's data.gov.sg platform is technically world-class: documented REST API, real-time JSON endpoints, API keys freely available, excellent documentation. The drain/waterway water level API (api.data.gov.sg/v1/environment/water-level) is a genuine best-practice implementation. However, this infrastructure carries no reservoir storage data — the API returns flood-monitoring sensor readings at drain-side stations, not reservoir fill levels. For reservoir storage specifically, the technical accessibility score is effectively zero; the high 20 score reflects that the API platform is ready to serve such data if PUB chose to publish it.

v1.3.0 capacity-weighted methodology applied 2026-05-29. Singapore total national reservoir storage capacity ~150 hm³ across 17 reservoirs (Marina, Upper Seletar, Lower Seletar, Kranji, Tengeh, Bedok, Pandan, MacRitchie, Upper/Lower Peirce, Punggol, Serangoon, Jurong Lake, Sarimbun, Poyan, Murai). PUB publishes no storage data, fill percentages, or volumetric data for any reservoir due to national security posture (5 reservoirs within Singapore Armed Forces restricted military zones). COVERED capacity = 0 hm³. coverage = round(100 × 0 / 150) = 0. The data.gov.sg platform publishes ~150 drain/canal flood-monitoring sensors but no reservoir storage.

Coverage is 0 (no national reservoirs >10 hm³ with public data). Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: No historical reservoir storage time series is publicly available for Singapore. The data.gov.sg water quality historical dataset covers 2019–2022 for drinking water quality (not storage levels). PUB's annual reports discuss water demand, consumption, and supply sources but do not include historical storage volume charts or tables. Academic literature references PUB reservoir data (catchment yield modelling) but this uses data obtained through institutional collaboration agreements, not from public portals. Effective historical depth for reservoir storage: zero.

Coverage is 0 (no national reservoirs >10 hm³ with public data). Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: The drain and waterway water level sensors on data.gov.sg update in near-real-time (approximately 5-minute intervals). However, these are flood management sensors, not reservoir storage gauges. For actual reservoir fill data, there is no public update at any frequency — the data does not exist in the public domain. The 15 score reflects that Singapore's technical infrastructure for real-time data publication is excellent (the drain sensor network proves this), but the specific data product (reservoir storage) is not published.

Coverage is 0 (no national reservoirs >10 hm³ with public data). Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: PUB publishes general information about reservoir infrastructure: named reservoirs, their locations, total surface area (~100 km² combined catchment area for all 17 reservoirs), and the concept of the 'One Water' integrated water management approach. The Central Water Reclamation Plant and NEWater system are described with capacity figures. However, no stage-volume curves, bathymetric surveys, measurement methodology, or capacity figures for individual reservoirs are published. Singapore's water supply system documentation in PUB's annual reports and sustainability reports is strong on policy but silent on operational reservoir metrics.

All Singapore government data portals, PUB publications, API documentation, and annual reports are in English. Singapore's four official languages are English, Mandarin, Malay, and Tamil, with English being the language of government and administration. data.gov.sg, the PUB website, API documentation, and all related resources are natively English. If reservoir storage data were published, it would be immediately accessible to the international research community without any language barrier.