SamplingFeatureType ODM2 Working Group A vocabulary for describing the type of SamplingFeature. Many different SamplingFeature types can be represented in ODM2. SamplingFeatures of type Site and Specimen will be the most common, but many different types of varying levels of complexity can be used. Stream gage A location used to monitor and test terrestrial bodies of water. Hydrometric measurements of water level, surface elevation ("stage") and/or volumetric discharge (flow) are generally taken, and observations of biota and water quality may also be made. SamplingPoint Term adapted from Wikipedia Definition adapted from Wikpedia (http://en.wikipedia.org/wiki/Stream_gauge).