sheet - Cook Inlet Wetlands

SHEET 1. WETLANDS AND CLIMATE

MATANUSKA-SUSITNA VALLEY

LB1-3

LBSF LB1-3 LB1-3 LB1-3

let

LB1-3

LB1-3 LBSF Res

LB1-3 Res LBSF

LB46

DRAINAGEWAYS draining to LAKEBEDS 3.

Reb

LB6 Tcs

Reb

LB32

Talkeetna

Reb

LB42

RC

LBSF Res

RC

Res

DW52 LB23

LBSF

LBSF

Res LBSF

LB1-4

LB6

DW2

DW5

E

RD4T2

JFMAMJ JASOND

JFMAMJ JASOND

Climate diagrams are as shown in the key below except that July maximum and January minimum temperatues are moved to above and below annual average temperature, and the total number of years of data is given below the period shown for each diagram.

1946

RB

LB42 SG

-20

K e n a i

LB6

RB

LB2-4

RC

Funny River (83 m) 2003-2010 1.4C 461 mm

Tcs LB23 LB23 LB1-3

Drainageway hydrologic components Carex utriculata Menyanthes trifoliata Drosera anglica Equisetum fluviatile

LB23

C 20.1

LB1-4 LB2-4 LB2

-18.0

LB1-3 LB2 LB2

50

300 mm 100

40

80

30

60

20

40

10

20

0

0

-20 J FMAM J J A SOND

LB1-3

DW4

LBSF

DW1

LBSF LBSF

152°W

151°W

150°W

K21

WU

SL

RB WU SL K34

SL

RB SL

LSP

WU Rea

RC K43

C p e e D

LSP

SL

RB

SL

SL

LB6

SL

DW55A Rel

SLS

SL

IB

SL

SL

SL SL

SLS

SL

SL SL

Res

SL RB SL

LSP

LB6 SL

A

SLS

RC

SL

SL RB

RB

SLA WU SL WU

WU

SL

WU

SL

WU

Rel

LB46

Homer Airport (19 m) 1932-2010 3.1C 625 mm

1.

SL

50

300 mm 100

40

80

30

60

20

40

10

20

0

0

C SLA DW42

5

10 Miles

-10 J F M A M J J A S O N D

800

a Mo n

Sh

ow

eW i ll

K

6000

0

6000 00

I 61°N

00

M

H C

0 500

5000

Tcs

SB LB62

LB6

T7

T8 T4

Inundations/ summer duration

T3

After: H. Walter & H. Leith 1960. Klimadiagramm-Weltatlas. G. Fischer, Jena.

T1

T7

0-2x 10-20x 6-13x

26-46x

2-3h 2-5d 2-3h

4-5h

1000

00

TA

40

N

4000

2000

60°N

00 20

S IN

DIscharge Slope

U O

I A N E K

Depression Peatlands

Mineral Soil Wetlands

Drainageway

Headwater Fen

K3

K2

K1

H3

H2

SS

SM

Late Snow Plateau

RT

T2

T5

T6

T9

0-2x

0-5x

0-4x

0-2x

2-3h

2-3d

62°30'N

>5d

Artwork by Conrad Field

LBSF LB42

CHU GAC H

ea

Islands and bars

Rt

Tidally influenced reach Cascade or waterfall

RA

High gradient (greater than 4%) riffle-dominated reach

RB

High gradient (2- 4%) riffle-dominated reach with scour pools

RC

Reaches with cut banks, point bars, and well-developed floodplains

RD3C

Channel of D3 reach

RD4C

Channel of D4 reach

eb el es ib t AA

A

0

B

1

C

2

G L M P

A

S

B

Z

C D3C D4C

RD4F1

Open water in D4 floodplain

RD4F2

Water table at or near surface in D4 floodplain, dominated by sedges

M O U NTAI N S

GEOMORPHOLOGIC COMPONENT

MAPPING COMPONENTS

3 4 5 5A

LATE SNOW PLATEAU (LSP)

6 SF

FLOATING ISLAND (FI)

R 7

T9

8

D4F1

9

D4F2

L

D4F3

cs

LAKE

K3

SPRING

LB3 SA

WETLAND / UPLAND COMPLEX

SC

D4SC D4T1 D4T2

DISTURBED 40

% WETLAND: 50 60

70

RD4F3

Variable water table in D4 floodplain, dominated by shrubs

RD4F4

Highly variable water table in D4 floodplain, forested

RD4SC

Side channel of D4 reach

RD4T1

Lower terrace of D4 reach

Peatlands in ice-block depressions not connected by wetlands or surface water to navigable water

RD4T2

Upper terrace of D4 reach

D1

Ponded water

D2

Water table at or near the surface, usually sedge-dominated

D3

Variable water table, usually shrub-dominated

D4

Highly variable water table, usually forested

Created (-c)

DA

Braided reaches on peat

Disturbed (-d)

SA

Alder (Alnus Mill. spp.)

SB

Birch (Betula L. spp.)

SC

Bluejoint reedgrass (Calamagrostis canadensis Michx. Beauv.)

DW1

Ponded water

SG

White spruce (Picea glauca (Moench) Voss)

DW2

Water table at or near the surface, usually sedge-dominated

SL

Lutz spruce (Picea X lutzii Little)

DW3

Variable water table, usually shrub-dominated

SM

Black spruce (Picea mariana (Mill.) Britt., Sterns & Pogg.)

DW4

Shallow peat, dominated by bluejoint reedgrass (Calamagrostis canadenis Michx. Beauv.)

SP

Sitka spruce (Picea sitchensis (Bong.) Carr.) only mapped in Seward

DW5

Bogs. Bog indicators (pH