Thermoelectric plant A facility that uses water in the generation of electricity from heat. Typically turbine generators are driven by steam. The heat may be caused by various means, including combustion, nuclear reactions, and geothermal processes. Facility Sites Adapted from USGS Site Types. http://wdr.water.usgs.gov/nwisgmap/help/sitetype.html ODM2 SiteType Controlled Vocabulary ODM2 Working Group A vocabulary for describing the type of a data collection Site. To some extent, these types represent the ultimate feature of interest that the site was established to measure. For example, a Stream Site was established to measure properties of a Stream.