March 2016 - IRIS v4.0 Released (current version)
Immaterial change. Metric name modified to improve accuracy. Minor revision to definition language to align consistency of metric with catalog's structure and style.
March 2014 - IRIS v3.0 Released
Material change. Metric definition and response format modified to provide clarity based on best practices and standard guidance.
November 2011 - IRIS v2.2 Released
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
New metric. Water Management (OI7365) developed via Environment, Energy & Water Working Group.