Located on the Atlantic coast 
from Marylana southward, along 
the shores of nearly enclosed 
bays, sounds, and rivers, and 
on the Gulf coast. 
Vegetation of needlerush marsh, 
often with wigeongrass in 
ponds, 

Irregularly flooded salt marshes (needlerush); 
Used very little ordinarily; but Type 17. 
where broken by ponds and 
creeks sometimes used moderately by feeding ducks and nesting 
clapper rails. 
18, Regularly Flooded Salt Marshes. 
Soil covered at average high 
tide with 4 foot or more of 
water during the growing 
season, 
Located along the Atlantic, 
Gulf, and Pacific coasts, 
along the open ocean in 
eastern Virginia, southern 
South Carolina, Georgia, and 
eastern Louisiana, and mostly along sounds elsewhere, 

Regularly flooded salt marshes; Type 18. 
Vegetation on the Atlantic and Pacific coasts mainly of saltmarsh 
cordgrass; on the Pacific coast, of alkali bulrush, glassworts, 
and arrowgrass, Open water in the marsh may support wigeongrass 
or sago pondweed, 
Used locally very much by feeding ducks and geese especially where 
vegetation-filled ponds are present; much by nesting clapper 
rails and laughing gulis; much by feeding herons; much by mussels, 
snails, and fiddler crabs; and some by fish and shorebirds, 
19. Sounds and Bays. 
Water of variable depth, 
Located along the Atlantic, 
Gulf, and Pacific coasts, in 
salt-water rivers, sounds, and 
bays and, to some extent, on 
the open ocean front, 

Coastal sounds and bays; Type 19. 
