adding class for @jiwalker-usgs
adding class for @jiwalker-usgs

ldecicco-USGS/gages-through-ages,jread-usgs/gages-through-ages,ldecicco-USGS/gages-through-ages,USGS-VIZLAB/gages-through-ages,jread-usgs/gages-through-ages,ldecicco-USGS/gages-through-ages,jread-usgs/gages-through-ages,USGS-VIZLAB/gages-through-ages