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Workflow Provenance Metadata to Enhance Reuse of South America Drainage Datasets

South America is vulnerable to various natural disasters such as earthquakes, volcanic eruptions, floods and landslides. Such events must be prevented or at least managed, by public institutions through the provisioning of proper and accurate environmental information and tools. The paper presents an Open Data approach to enhance the release of South America drainage datasets in order to be quickly exploitable by both governmental Institution and private organization coping with such emergencies. The Open Data paradigm is followed to respond to the e-Government requirement for a transparent, stable and standard information source to be sharable and reusable across sectors and disciplines. The paper contribution is to enhance drainage datasets exploitation through provenance information of the data processing workflow enabling trust, and allowing data reproducibility. It presents a practice to describe entities and processes involved in producing drainage networks derived from a DEM. Metadata of workflow provenance is provided according to the W3C PROV data model. Moreover, the paper provides information about datasets publication as Open Data as well as information about their access.