Commonwealth Lake

Ecosystem Overview

The Commonwealth Lake ecosystem supports 33 documented wildlife species across 30 taxonomic genera. Located in Washington County, Oregon, this area provides critical habitat with diverse natural communities. The location hosts 7 frequently observed species and 6 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Hillsboro nearby has 67% more documented species, Commonwealth Lake offers unique wildlife observation opportunities. This location ranks #7 for species diversity among 16 Washington County County natural areas, placing it in the 56th percentile for biodiversity.

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 16 locations

Species Distribution

Very Common7 species

Common10 species

Occasional10 species

Rare6 species

Regional Context

Regional Ranking

#7 of 16 locations

56th percentile for diversity

vs. Hillsboro

-67% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

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Most Common Species

Showing 20 most frequently observed species out of 33 total documented species.

Anas platyrhynchos

mallard

Very Common16 obs.

Podilymbus podiceps

Pied-billed grebe

Very Common11 obs.

Spatula clypeata

Northern Shoveler

Very Common11 obs.

Mareca americana

American Wigeon

Very Common9 obs.

Mareca strepera

Gadwall

Very Common9 obs.

Fulica americana

American Coot

Common8 obs.

Bucephala albeola

Bufflehead

Common8 obs.

Ardea herodias

Great Blue Heron

Common8 obs.

Branta canadensis

Canada goose

Common5 obs.

Megaceryle alcyon

Belted Kingfisher

Common4 obs.

Anas crecca

teal, common teal

Common4 obs.

Aythya collaris

Ring-necked Duck

Occasional3 obs.

Mergus merganser

goosander

Occasional3 obs.

Butorides virescens

green heron

Occasional3 obs.

Melospiza melodia

Song Sparrow

Occasional2 obs.

Myocastor coypus

Coypu, Nutria

Occasional2 obs.

Setophaga coronata

Myrtle Warbler

Occasional2 obs.

Lithobates catesbeianus

Common Bullfrog

Rare1 obs.

Castor canadensis

Canadian beaver

Rare1 obs.

Calypte anna

Anna's Hummingbird

Rare1 obs.

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Most Common Species

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Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Commonwealth Lake. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

Species Count

-50%

vs. Regional Average

Compared to 8 nearby locations in Washington County County, Oregon

Nearby Natural Areas

Hillsboro

Importance: 0.46

100 species

-67% vs. current

Beaverton

Importance: 0.45

100 species

-67% vs. current

Washington County

Importance: 0.43

100 species

-67% vs. current

Tigard

Importance: 0.42

100 species

-67% vs. current

Forest Grove

Importance: 0.38

100 species

-67% vs. current

Wapato Marsh

Importance: 0.35

19 species

+74% vs. current

Bethany Lake

Importance: 0.35

9 species

+267% vs. current

Northwest Pond

Importance: 0.35

3 species

+1000% vs. current

About This Comparison

These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within Washington County County.

Regional Comparison

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Regional Ranking

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Species Count

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vs. Regional Average

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Nearby Natural Areas

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About This Comparison

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Regional Comparison

Regional Ranking

Species Count

-50%

vs. Regional Average

Compared to 8 nearby locations in Washington County County, Oregon

Nearby Natural Areas

Hillsboro

Importance: 0.46

100 species

-67% vs. current

Beaverton

Importance: 0.45

100 species

-67% vs. current

Washington County

Importance: 0.43

100 species

-67% vs. current

Tigard

Importance: 0.42

100 species

-67% vs. current

Forest Grove

Importance: 0.38

100 species

-67% vs. current

Wapato Marsh

Importance: 0.35

19 species

+74% vs. current

Bethany Lake

Importance: 0.35

9 species

+267% vs. current

Northwest Pond

Importance: 0.35

3 species

+1000% vs. current

About This Comparison

Ecosystem Overview

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 16 locations

Species Distribution

Very Common7 species

Common10 species

Occasional10 species

Rare6 species

Regional Context

Regional Ranking

#7 of 16 locations

56th percentile for diversity

vs. Hillsboro

-67% species diversity

Most Common Species

Showing 20 most frequently observed species out of 33 total documented species.

Anas platyrhynchos

mallard

Very Common16 obs.

Podilymbus podiceps

Pied-billed grebe

Very Common11 obs.

Spatula clypeata

Northern Shoveler

Very Common11 obs.

Mareca americana

American Wigeon

Very Common9 obs.

Mareca strepera

Gadwall

Very Common9 obs.

Fulica americana

American Coot

Common8 obs.

Bucephala albeola

Bufflehead

Common8 obs.

Ardea herodias

Great Blue Heron

Common8 obs.

Branta canadensis

Canada goose

Common5 obs.

Megaceryle alcyon

Belted Kingfisher

Common4 obs.

Anas crecca

teal, common teal

Common4 obs.

Aythya collaris

Ring-necked Duck

Occasional3 obs.

Mergus merganser

goosander

Occasional3 obs.

Butorides virescens

green heron

Occasional3 obs.

Melospiza melodia

Song Sparrow

Occasional2 obs.

Myocastor coypus

Coypu, Nutria

Occasional2 obs.

Setophaga coronata

Myrtle Warbler

Occasional2 obs.

Lithobates catesbeianus

Common Bullfrog

Rare1 obs.

Castor canadensis

Canadian beaver

Rare1 obs.

Calypte anna

Anna's Hummingbird

Rare1 obs.

Want the Complete Field Guide?

Get all 33 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.