Enhancement Marshes

Some articles on marshes, enhancement, enhancement marshes:

Arcata Wastewater Treatment Plant And Wildlife Sanctuary - Treatment and Enhancement
... Bay via complex flow routing through a number of contiguous ponds, wetlands, and marshes ... about where wastewater ceases to be considered partially treated sewage and meets enhancement objectives of the California Bays and Estuaries Policy ... treatment system includes both treatment wetlands and enhancement marshes ...