Wetland Classification and Mapping of Seward, Alaska



Map Unit Descriptions


Ecosystem: Headwater Fen


Map Component: H4


Seward Area Extent: 12 wetland polygons; 24.6 acres

An H4 wetland on the glacier-cut bedrock bench above Fourth of July Creek.


Wetland Indicators

Type: Mineral soil

Depth to water table: 28 cm on 28 August 2006 at the one site measured

Organic layer thickness: 13 cm at the one site measured

Depth to redoximorphic features: 20 cm at the one site measured

Common Soils: Typic Cryaquents

Common Plant communities:

Mountain hemlock / early blueberry (Tsuga mertensiana / Vaccinium ovalifolium)

Mountain hemlock / early blueberry- rusty menziesia (Tsuga mertensiana / Vaccinium ovalifolium - Menziesia ferruginea)



HGM: Terrene Basin groundwater-dominated Throughflow headwater.

H4 is the forested Headwater Fen Ecosystem wetland component, with a deeper water table.  Seward area Headwater Fens are only mapped on the 800' elevation glacier-cut bedrock bench above Fourth of July Creek.   This Headwater Fen component commonly occurs alone or with the sloping fewflower sedge-dominated component (H3). 

There is much evidence of old timber-cutting activity in the forested headwater fens above Fourth of July Creek.  Some areas appear to have been nearly clear-cut many years ago.


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 15:18