® Sponsored by OGC/WMO Hydrology Domain Working Group 95th OGC Technical Committee Boulder, Colorado USA David Arctur 13:00-14:45 Wednesday 3 June 2015 Copyright © 2015 Open Geospatial Consortium

OGC ® Agenda 1.HY_Features to Standard / Hydrologic Feature SWG (Irina Dornblut/Rob Atkinson) -- Pending Docs Present and future of the Open Water Web (David Blodgett) 3.Groundwater IE Progress Report (B. Simons/B.Brodaric) 4.WaterML 2.0 part 2 RESTful API and JSON encoding (Pete Taylor) ( ) 5.Testbed-11 High Resolution Flood Information Scenario Engineering Report (Eugene Yu) 6.TimeseriesML SWG: Plans & Progress (James Tomkins) Copyright © 2015 Open Geospatial Consortium

OGC ® Information: Document Approval Motion: Testbed 11 Hydro Info Engineering Report OGC® Testbed-11 High Resolution Flood Information Scenario Engineering Report –(posted on pending since 15 May 2015) ) The Hydrology DWG recommends that the OGC Technical Committee approve an electronic vote for release of OGC , OGC® Testbed- 11 High Resolution Flood Information Scenario Engineering Report as an OGC Public Engineering Report –Pending and final edits and review by OGC staff –Motion: Lew Leinenweber –Second: Steve Liang –Vote: approved by unanimous consent TC Vote will start shortly Copyright © 2015 Open Geospatial Consortium

OGC ® Copyright © 2015 Open Geospatial Consortium Proposed Hydrologic Feature SWG The Hydrology DWG recommends that the OGC Technical Committee approve the formation of a „Hydrologic Feature Standards Working Group“ to submit a “Hydrologic Feature Standard” via the RFC process and accept its charter. –Pending and final edits and review by OGC staff –A RFC Submission Team is formed, a charter of the SWG was developed and discussed. The SWG charter will be finalised and sent to TC for approval by an electronic vote in July –Motion: Bruce Simons –Second: David Blodgett –The vote was 7 in favor, 1 opposed, 2 abstain. Objective of the SWG is to progress the HY_Features hydrologic feature model to the state of an adopted OGC standard for a stable identification and referencing of hydrologic features. Issue: A standard for this conceptual model needs to show its relevance and usefulness for, eg, US NHD and Australian Hydro Fabric. An Interoperability Experiment is recommended.

OGC ® Background HY_Features, common hydrologic feature model Formalism (ISO UML Application Schema) of definitions based on the terminology in use in the WMO community, published in the “International Glossary of Hydrology”, published as a discussion paper for some time (OGC r3), (Parts of) used successfully in –OWS 10 as a target model for interoperability across heterogeneous data sets, –AU Hydrological GeoFabric (AHGF) at the AU Bureau of Meteorology, –Open Management Platform (OMP) of the EU WatERP project. Represents the “sampledFeature” target of WaterML – a data set independent way of specifying the type of feature being observed. Support interoperable hydrological connectivity operations Copyright © 2015 Open Geospatial Consortium

OGC ® Intended Scope Conceptual model – generalised requirements Conformance targets: – Implementation Schema Part 2, GML schema Part 3, OWL (ISO encoding) –Data Data is conformant to HY_Features if it can be encoded using a conformant implementation schema And, it uses the same identifiers for features whenever these are defined or referenced in data encoded using an conformant implementation schema HY_Features is primarily concerned with being able to identify if the same feature is being referenced in different contexts. Copyright © 2015 Open Geospatial Consortium