Wetland Classification and Mapping of the Kenai Lowland, Alaska

 

 

Map Unit Descriptions

 

 

Ecosystem: Kettle

 

Map Component: K1; K1c

 

Extent:

K1: 227 wetland polygons; 2589.0 ha; 1.83% of wetland area; 1.38% of wetland polygons.

K1c: 2 wetland polygons; 68.0 ha; 0.05% of wetland area; 0.01% of wetland polygons.

A small K1 pond about 20 miles NE of Homer (Circle Lake, polygon 10517).

Wetland Indicators

Type: Open water

Average depth to water table: Water above the surface

Organic layer thickness: n/a

Average depth to redoximorphic features: n/a

Common Soils: pond

Common Plant communities:

Buckbean

Tall cottongrass - Livid sedge

Sweetgale – Livid sedge

 

NWI: L1UB1 or PEM2H if shallow

HGM: Terrene Basin groundwater-dominated Throughflow (headwater)

Accuracy assessment: 26 polygons interpreted as K1 on aerial photographs were field checked.  23 remained K1; 2 were revised to LB1 and 1 was revised to LB12..

 

The K1 map component is a pond on a kettle-kame landscape.  These units have standing water above the surface for the entire growing season.  At their edges, emergent plant communities are common, and floating plants such as pond lily (Nuphar polysepala) and pondweeds (Potamogeton spp.) are also common when the pond is deeper.  These wetlands are most common and extensive on the interlobate moraine described by Karlstrom (1964), between the towns of Nikiski and Sterling.

 

In Homer, the name K1c refers to a human-created K1 wetland.


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 Introduction and Key to Plant Communities  

Introduction and Key to Ecosystems

    Kenai Hydric Soils    Map Unit Summary    Methods    Glossary

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Contact: Mike Gracz
Kenai Watershed Forum 
Homer Field Office
Old Town Professional Center
3430 Main Street Suite B1
Homer, AK  99603
907-235-2218

15 November 2005 15:04