Wetland Classification and Mapping of Seward, Alaska

An extension of wetland classification and mapping of the Kenai Lowland


Map Unit Descriptions


Ecosystem: Depression


Map Component: D4


Seward Area Extent: 2 wetland polygons; 2.3 acres.


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Wetland Indicators

Type: Mineral, or peat

Average depth to water table: 20 cm

Organic layer thickness: 20 cm, if mineral soil, 150+ cm if peat

Average depth to redoximorphic features: 8 cm if mineral soil, n/a if peat

Common Soils:  Typic Cryaquods, Typic Cryohemists

Common Plant communities:

Mountain hemlock / crowberry (Tsuga mertensiana / Empetrum nigrum)


HGM: Terrene Basin Isolated


D4 is the map component in a depressional wetland dominated by forest or woodland.  Around Seward, D3 wetlands are often dominated by mountain hemlock (Tsuga mertensiana).  These are small peatlands in bedrock depressions not hydrologically connected at or very near the surface with other wetlands.  This component is uncommon, either by itself or mixed with the shrub-dominated component (D3).  We visited only one depression with a minor stunted woodland component, the others were mapped using only aerial photography.



Do I Need a Permit?

 Introduction and Key to Plant Communities  

Introduction and Key to Ecosystems

   Seward Soils    Map Unit Summary    Methods    Glossary



Contact: Mike Gracz
Kenai Watershed Forum 
Homer Field Office
Old Town Professional Center
3430 Main Street Suite B1
Homer, AK  99603

12 February 2007 15:12