The Open Geospatial Consortium (OGC) invites participation in a Groundwater Interoperability Experiment (GWIE 2).

This activity, which began on Oct. 23, will develop and test the candidate OGC Groundwater Markup Language 2 (GWML 2) standard by harmonizing and advancing existing initiatives such as GWML1, the EU-INSPIRE effort, GeoSciML and others. Participants will then prepare an engineering report with the intent to develop it into a data encoding specification that will be advanced toward adoption as the OGC GWML 2 Standard. This activity is being carried out within the Hydrology Domain Working Group, which operates under the auspices of the OGC and the World Meteorological Organization.

GWML 2 will meet the requirements for a human-readable and machine-readable transfer standard for groundwater feature data, including data about water wells, aquifers and related entities. GWML 2 will also serve as a reference for hydrological observations related to these features. (See the OGC WaterML2.0 Encoding Standard.)

The OGC members that are acting as initiators of the Interoperability Experiment include the Commonwealth Scientific and Industrial Research Organization (CSIRO),  European Commission (JRC),  Natural Resources Canada (NRCan) and the U.S. Geological Survey (USGS).

A summary of the activity plan, requirements for participation, schedule and kick-off meeting details are available at:

Expressions of interest for participation are due by Dec. 27.