Map 21. Alternative Freshwater Portfolios: High, Middle ......M et h o w R R i v e r O k a n o g a n...

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Methow River

Okan ogan Riv er

Sanpoil River

Colvil le River

Twi s p River

Chew

ack R

iver

Kettle RiverLo

st R

iver

Ste hekin River

Fraser River

F r a nkli n

D. R

oosev

elt L

ake

Ross Lake

Lake Chelan

Omak Lake

CurlewLake

Fraser Ri ver

Kettle R

iver

West Ket tle River

Bridge River

Okanag an Lak

e

Shuswap Lake

Adams L

ake

Kamloops LakeSeton Lake

Carpenter Lake

LillooetLake

BonaparteLake

Ander

son La

ke

Nicola

Lake

Skaha Lake

Osoyoos Lake

Spokane

Omak

Vernon

Lytton

Merritt

Kelowna

Osoyoos

Nespelem

ColvilleRepublic

Winthrop

Oroville

KamloopsLillooet

Penticton

Princeton

Grand Forks

Cache Creek

Similk

ameen

Rive

r

Tho mpson

Rive r

Salmon Arm

TwispInchelium

Tonasket

124°W

124°W

123°W

123°W

122°W

122°W

121°W

121°W

120°W

120°W

119°W

119°W

118°W

118°W

117°W

117°W

116°W

48°N

48°N

49°N

49°N

50°N

50°N

51°N

51°N

OKANAGAN ECOREGION:

Map 21. AlternativeFreshwater Portfolios:

High, Middle, andLow Risk

CANADAU.S.A.

Freshwater Portfolio Risk Level High Risk Portfolio 21%Middle Risk Portfolio (plus high risk) 33%Low Risk Portfolio (plus middle and high risk) 52%

The middle risk portfolio represents one level ofrisk to biodiversity. This map illustrates how thesize of the portfolio changes when the risk tobiodiversity is decreased or increased. Lowerrisk encompasses more area; higher riskencompasses less. The high risk portfolio isnested within the middle portfolio, and themiddle portiolio is nested within the lower riskportfolio.

PA C

I FI C

OC

EA

N

IDAHOOREGON

MONTANA

WASHINGTON

BRITISHCOLUMBIA

ALBERTA

C A N A D A

U. S. A.

Level of Riskto Biodiversity

Goal Level(% of historical)

Size of Portfolio(% of Ecoregion)

HighMiddleLow

18%30%48%

21%33%52%

Scale 1:1,900,0000 5 10 Miles

0 10 20 Kilometres

Ecoregion Boundary

International BoundaryUS State Boundary

LakeRiver

Transportation

Water

PoliticalPopulated Place

Major HighwayMinor Highway

The Nature ConservancyWashington Chapter

October 2006

Projection: BC Albers Equal Area

Sources:BC Ministry of Agriculture and Lands,Nature Conservancy of Canada,The Nature Conservancy,WA Dept. of Fish and Wildlife,WA Dept. of Natural Resources,USGS, ESRI

B.C. ConservationData Centre

The Partners (NCC, TNC, WDFW, WNHP, CDC, NatureServe) do not verify orguarantee the accuracy, reliability, or completeness of any data provided. ThePartners provide this data without any warranty of any kind whatsoever, eitherexpress or implied. The Partners shall not be liable for incidental,consequential, or special damages arising out of the use of any data provided.