T7 wetlands are dominated by Beachrye (Leymus mollis ssp. mollis).  They are found on coastal storm berms and higher riverbank levees.  Vince and Snow (1984) describe 'Riverbank Levees' dominated by other grasses, and that "Still higher levees featured [Beachrye] and large forbs..."  Their lower elevation riverbank levees flood an average of 1 time per summer; probably higher T7 beachrye berms or levees flood only when storms correspond with the highest spring tides.

This map component is typically composed of tall, dense beachrye over a well drained sandy and gravelly soil.  While the dominant vegetation will always meet the plant criteria for a wetland, soils and hydrology criteria may not be present.  T7 does not always qualify as a wetland under the delineation protocols described in the 1987 Army Corps of Engineers wetland delineation manual.