T78 wetlands are relatively common complexes containing a mixture of beachrye (T7) (Leymus mollis ssp mollis) and a diverse herbaceous and graminoid plant community (T8). They are found behind and atop storm berms from the Homer Spit to the Mouth of the Kasilof River.  A 2.5 mile long, narrow T78 wetland lies along the coast just north of the mouth of the Anchor River.

The single T87 and one of the T78 wetlands were mapped at the mouth of Deep Creek and no longer exist. That area was visited in 1999 as part of the Natural Resources Conservation Service Western Kenai Soils mapping effort.  During the October and November of 2002 significant flooding events (>100 year) occurred, washing out the Sterling highway bridge and changing the course of Deep Creek.  The mouth of the creek now empties into the inlet about 0.2 miles southwest of where it did before the floods.  Large amounts of gravel and sand were deposited in the estuary.  With time, the original plant communities may return to occupy locations similar to their historic occurrence, or new plant communities may develop.

The beachrye component (T7) represents areas which may only flood when storms correspond with the highest tides.

T8 corresponds to Vince and Snow's (1984) 'Riverbank Levees zone 6'.  Vince and Snow estimate that Riverbank Levees are inundated an average of once per summer (range 0-2 times for a duration of 2-3 hours) by the highest spring tides.

Although the plant criteria for a jurisdictional wetland are met in these complexes, the soils and/or hydrology criteria might not always qualify T78 complexes as jurisdictional wetlands.

In Homer, the name T78d refers to a wetland that was T78 but is now disturbed.