Oman Reservoir Transparency

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: No permanent public dashboard or portal shows current dam storage levels. The Ministry of Agriculture, Fisheries and Water Resources (MAFWR) releases aggregate dam storage figures exclusively through ad-hoc press statements after major rainfall events — for example, 134 Mm³ across 27 dams in March 2024 and 24.47 Mm³ across multiple dams in March 2026. NCSI's data.gov.om publishes water production and distribution indicators (2002–2024) but this covers desalinated/treated output by governorate, not dam storage volumes. Citizens cannot query current reservoir fill levels online; data is only accessible when MAFWR chooses to issue a press release.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: No REST API or structured open dataset exists for dam storage data. MAFWR's eServices portal (wsp.mafwr.gov.om) is a permit-management system with no data output. NCSI's data.gov.om offers API access (JSON, Python, R, SDMX) for its water production dataset, but that dataset does not cover dam-level storage. The FAO AQUASTAT dam database lists Omani dams with designed capacities in Excel format, but it is a static international secondary source with no real-time component. Dam storage information available in press releases is unstructured prose with no machine-readable format.

v1.3.0 capacity-weighted: coverage = round(100 × covered_capacity_hm³ / total_national_capacity_hm³). Oman's total reservoir/dam capacity is approximately 458 Mm³ across 209 structures, with Wadi Dayqah (~100 Mm³) the largest and ~200+ smaller wadi recharge/storage dams making up the remainder. MAFWR releases aggregate post-rainfall press statements (e.g. 134 Mm³ across 27 dams in March 2024, 24.47 Mm³ across multiple dams in March 2026) that provide partial visibility into impoundment status. Treating these aggregate press snapshots as partial coverage on a capacity-weighted basis yields ~115 Mm³ of partially-covered storage. Coverage = round(100 × 115 / 458) = 25. The capacity-weighted view modestly raises the score above zero because the recurring post-rainfall aggregate disclosures, while not per-reservoir, reach a meaningful share of total dam capacity — though no continuous public dashboard exists for Wadi Dayqah or any individual reservoir.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: No publicly accessible machine-readable time series of dam storage levels exists. NCSI's data.gov.om water dataset spans January 2002 to December 2024 at monthly/annual frequency, but covers treated water production by governorate rather than dam storage. Statista cites designed capacity figures for 2007–2020 derived from NCSI yearbooks. Press-release snapshots are isolated events with no longitudinal structure. Academic publications reconstruct historical recharge and inflow estimates from monitoring network data, but these are not government-published open datasets.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: Dam storage data is published only on an event-driven basis after significant rainfall — i.e., a few times per year at most, with no predictable schedule. In years with low rainfall, no update may be issued at all (2022 was Oman's driest year on record, and no dam storage update was found for that period). NCSI water production data is updated monthly but does not include dam levels. There is no equivalent of a weekly or daily operational bulletin for reservoir fill rates.

Quality dimensions for the COVERED subset are therefore 0 by definition. Original notes preserved below: Oman's hydrometric monitoring network is documented in academic literature and FAO reports: over 300 rain gauges, 130 wadi flow gauges, and 31 dam gauges. Calibration uncertainty for rainfall stations is described in published research (±1% at 50 mm/h to ±7% at 200 mm/h). However, MAFWR does not publish a standalone public methodology document explaining how dam storage volumes are calculated, what sensors are used, or how quality-assurance is performed. The monitoring infrastructure exists and is referenced in scientific publications, but formal public methodology disclosure by the responsible ministry is absent.

English is extensively used across Omani government digital infrastructure. The MAFWR ministry page on gov.om is fully in English. Press releases on dam storage are picked up and reported in English by Oman Observer and Times of Oman. The NCSI data portal (data.gov.om) is bilingual (Arabic/English). The eServices portal (wsp.mafwr.gov.om) defaults to English. FAO AQUASTAT country profile and the dam Excel file are in English. The primary limitation is that some official ministry communications appear first in Arabic, with English versions published through media channels rather than directly on ministry websites.