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Wetland Classification and Mapping of the Kenai Lowland, Alaska
Map Unit Descriptions Ecosystem: Headwater Fen Map Component: H4
Extent: 18 wetland polygons; 90.0 ha; 0.06% of wetland area; 0.11% of wetland polygons. |
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 The H4 edge of an H43 Headwater Fen near Nikolaevsk (polygon 2949). |
Wetland Indicators No Data Available Type: Peat Average depth to water table: n/a Organic layer thickness: n/a Average depth to redoximorphic features: n/a Common Soils:(estimated) STARICHKOF, SALAMATOF Common Plant communities: (estimated) Lutz spruce / Barclay willow / Field horsetail / Crowberry Lutz spruce / Field horsetail – Bluejoint
NWI: PFO4Eg HGM: Terrene Basin groundwater-dominated Throughflow headwater. If not adjacent to a Late Snow Plateau Ecosystem wetland, then: Terrene Basin Outflow headwater. |
| Accuracy assessment: None of the polygons interpreted as H4 on aerial photographs were field checked. | |
The uncommon H4 map component is a fen dominated by woodland or forest, in a headwater basin. These wetlands have a deeper water table and a thick peat layer. Most headwater fens occur above the limit of forest or woodland growth, but several have been mapped near the edge of that elevation limit. A few lie in the northern headwaters of Deep Creek; most of them are located in the Anchor River watershed. None of them have been visited.
