habitat restoration
(B) Inclusions The term “habitat restoration” includes— (i) an activity conducted to return a project site, to the maximum extent practicable, to the ecological condition that existed prior to the loss or degradation, including— (I) removing tile drains or plugging drainage ditches in former or degraded wetland; (II) returning meanders and sustainable profiles to straightened streams; (III) burning grass communities heavily invaded by exotic species to reestablish native grass and plant communities; and (IV) planting plant communities that are native to the project site; (ii) if restoration of a project site to its original ecological condition is not practicable, an activity that repairs 1 or more of the original habitat functions and that involve the use of native vegetation, including— (I) the installation of a water control structure in a swale on land isolated from overbank flooding by a major levee to simulate natural hydrological processes; and (II) the placement of streambank or instream habitat diversity structures in streams that cannot be restored to original conditions or profile; and (iii) removal of a disturbing or degrading element to enable the native habitat to reestablish or become fully functional.