Wetland Classification and Mapping
of Seward, Alaska
An extension of wetland classification and mapping of the Kenai Lowland
Map Unit Descriptions
Map Units: D1-3, D31
Seward Area Extent:
D1-3: 2 wetland polygons; 4.8 acres.
D31: 1 wetland polygon; 0.1 acre.
The only D31 Depression, a small season-variable pond surrounded by bluejoint reedgrass, on the bedrock knob north of Bear Lake.
Average depth to water table: 20 cm
Organic layer thickness: 150+ cm
Average depth to redoximorphic features: n/a
Common Soils: Typic Cryohemists
Common Plant communities:
Sitka sedge (Carex sitchensis)
Sphagnum - tall cottongrass (Sphagnum spp. - Eriophorum angustifolium)
Bluejoint reedgrass (Calamagrostis canadensis)
HGM: Terrene Basin Isolated.
These are uncommon small ponds (D1) with a sedge-dominated and/or a bluejoint reedgrass fringe in bedrock depressions not hydrologically connected at or very near the surface with other wetlands. Sedge dominated fringes (D2) have a water table at or near the surface for most of the growing season, and bluejoint fringes (D3) have a deeper water table. The few wetlands mapped as either D1-3 (open water, sedge and bluejoint components all present) or D31 (a small season variable pool surrounded by bluejoint) occur in small bedrock depressions on the bedrock knob north of Bear Lake.
|Contact: Mike Gracz Kenai Watershed Forum Homer Field Office Old Town Professional Center 3430 Main Street Suite B1 Homer, AK 99603 907-235-2218||
12 February 2007 15:11