Montane wetlands appear along banks of stream systems in low mountain valleys with generally narrow floodplains. Some are found even on slopes, where seepage occurs. At very high elevations, basins of melted snow can support large montane wetlands. Pocosins are southern bogs found on the coastal plains of the southeastern United States. This inland wetland type is particularly common in North Carolina.
Fens are peatlands with wet, spongy ground.
They are commonly dominated by sedges. They are formed in poorly drained areas and have a higher pH than bogs, being somewhat acidic to alkaline, and are also more nutrient rich. These wetlands frequently surround open bodies of water and are usually located in regions of the northeast, the northern plains and Canada. They commonly have rather diverse and interesting flora, including many rare species. Vernal pools are wetlands found in inland areas, particularly in California.