Lake Berryessa

Ecosystem Overview

The Lake Berryessa ecosystem supports 22 documented wildlife species across 22 taxonomic genera. Located in Napa County, California, this area provides critical habitat with diverse natural communities. The location hosts 5 frequently observed species and 4 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Napa nearby has 78% more documented species, Lake Berryessa offers unique wildlife observation opportunities. This location ranks #5 for species diversity among 7 Napa County County natural areas, placing it in the 29th 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 7 locations

Species Distribution

Very Common5 species

Common7 species

Occasional6 species

Rare4 species

Regional Context

Regional Ranking

#5 of 7 locations

29th percentile for diversity

vs. Napa

-78% 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 22 total documented species.

Cathartes aura

Turkey Vulture

Very Common4 obs.

Bucephala albeola

Bufflehead

Very Common3 obs.

Melanerpes formicivorus

Acorn Woodpecker

Very Common2 obs.

Aechmophorus occidentalis

Western Grebe

Very Common2 obs.

Heliotropium curassavicum

Seaside Lavender

Very Common2 obs.

Pelecanus erythrorhynchos

American White Pelican

Common2 obs.

Branta canadensis

Canada goose

Common2 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Common1 obs.

Pandion haliaetus

osprey

Common1 obs.

Corvus corax

common raven

Common1 obs.

Euphagus cyanocephalus

Brewer's blackbird

Common1 obs.

Verbena bracteata

Prostrate Verbena

Occasional1 obs.

Portulaca oleracea

common purslane

Occasional1 obs.

Xanthium strumarium

rough cocklebur

Occasional1 obs.

Helminthotheca echioides

Ox tongue

Occasional1 obs.

Abutilon theophrasti

china jute

Occasional1 obs.

Cyprinus carpio

common carp, carp

Occasional1 obs.

Croton setiger

turkey mullein

Rare1 obs.

Salpinctes obsoletus

Rock Wren

Rare1 obs.

Bellardia trixago

Rare1 obs.

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Most Common Species

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Want the Complete Field Guide?

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Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Lake Berryessa. 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 6 nearby locations in Napa County County, California

Nearby Natural Areas

Napa

Importance: 0.48

100 species

-78% vs. current

Napa County

Importance: 0.47

100 species

-78% vs. current

Angwin

Importance: 0.34

28 species

-21% vs. current

Indian Island

Importance: 0.33

1 species

+2100% vs. current

Deer Park

Importance: 0.30

1 species

+2100% vs. current

Lake Hennessey

Importance: 0.20

34 species

-35% 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 Napa 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 6 nearby locations in Napa County County, California

Nearby Natural Areas

Napa

Importance: 0.48

100 species

-78% vs. current

Napa County

Importance: 0.47

100 species

-78% vs. current

Angwin

Importance: 0.34

28 species

-21% vs. current

Indian Island

Importance: 0.33

1 species

+2100% vs. current

Deer Park

Importance: 0.30

1 species

+2100% vs. current

Lake Hennessey

Importance: 0.20

34 species

-35% 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 7 locations

Species Distribution

Very Common5 species

Common7 species

Occasional6 species

Rare4 species

Regional Context

Regional Ranking

#5 of 7 locations

29th percentile for diversity

vs. Napa

-78% species diversity

Most Common Species

Showing 20 most frequently observed species out of 22 total documented species.

Cathartes aura

Turkey Vulture

Very Common4 obs.

Bucephala albeola

Bufflehead

Very Common3 obs.

Melanerpes formicivorus

Acorn Woodpecker

Very Common2 obs.

Aechmophorus occidentalis

Western Grebe

Very Common2 obs.

Heliotropium curassavicum

Seaside Lavender

Very Common2 obs.

Pelecanus erythrorhynchos

American White Pelican

Common2 obs.

Branta canadensis

Canada goose

Common2 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Common1 obs.

Pandion haliaetus

osprey

Common1 obs.

Corvus corax

common raven

Common1 obs.

Euphagus cyanocephalus

Brewer's blackbird

Common1 obs.

Verbena bracteata

Prostrate Verbena

Occasional1 obs.

Portulaca oleracea

common purslane

Occasional1 obs.

Xanthium strumarium

rough cocklebur

Occasional1 obs.

Helminthotheca echioides

Ox tongue

Occasional1 obs.

Abutilon theophrasti

china jute

Occasional1 obs.

Cyprinus carpio

common carp, carp

Occasional1 obs.

Croton setiger

turkey mullein

Rare1 obs.

Salpinctes obsoletus

Rock Wren

Rare1 obs.

Bellardia trixago

Rare1 obs.

Want the Complete Field Guide?

Get all 22 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.