Johnson Reservoir Number 1

Ecosystem Overview

The Johnson Reservoir Number 1 ecosystem supports 14 documented wildlife species across 14 taxonomic genera. Located in Natrona County, Wyoming, this area provides critical habitat with diverse natural communities. The location hosts 3 frequently observed species and 2 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Casper nearby has 42% more documented species, Johnson Reservoir Number 1 offers unique wildlife observation opportunities. This location ranks #4 for species diversity among 4 Natrona County County natural areas, placing it in the 0th 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 4 locations

Species Distribution

Very Common3 species

Common5 species

Occasional4 species

Rare2 species

Regional Context

Regional Ranking

#4 of 4 locations

0th percentile for diversity

vs. Casper

-42% 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 14 total documented species.

Ondatra zibethicus

Muskrat

Very Common2 obs.

Pelecanus erythrorhynchos

American White Pelican

Very Common2 obs.

Recurvirostra americana

American avocet

Very Common1 obs.

Limnodromus scolopaceus

Long-billed Dowitcher

Very Common1 obs.

Gavia pacifica

Pacific Diver

Very Common1 obs.

Aechmophorus occidentalis

Western Grebe

Common1 obs.

Podiceps nigricollis

black-necked grebe

Common1 obs.

Plectrophenax nivalis

snow bunting

Common1 obs.

Cygnus columbianus

whistling swan

Common1 obs.

Mergus serrator

Red-breasted Merganser

Common1 obs.

Himantopus mexicanus

Black-necked Stilt

Common1 obs.

Tringa semipalmata

Willet

Occasional1 obs.

Spatula clypeata

Northern Shoveler

Occasional1 obs.

Sturnella neglecta

Western Meadowlark

Occasional1 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 Johnson Reservoir Number 1. Perfect for outdoor adventures, education, and nature exploration.

$6.99

Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Johnson Reservoir Number 1. Perfect for outdoor adventures, education, and nature exploration.

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$6.99

Regional Comparison

Regional Ranking

Species Count

-70%

vs. Regional Average

Compared to 3 nearby locations in Natrona County County, Wyoming

Nearby Natural Areas

Casper

Importance: 0.46

24 species

-42% vs. current

Natrona County

Importance: 0.41

100 species

-86% vs. current

Casper Mountain

Importance: 0.24

16 species

-12% 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 Natrona 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

-70%

vs. Regional Average

Compared to 3 nearby locations in Natrona County County, Wyoming

Nearby Natural Areas

Casper

Importance: 0.46

24 species

-42% vs. current

Natrona County

Importance: 0.41

100 species

-86% vs. current

Casper Mountain

Importance: 0.24

16 species

-12% 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 4 locations

Species Distribution

Very Common3 species

Common5 species

Occasional4 species

Rare2 species

Regional Context

Regional Ranking

#4 of 4 locations

0th percentile for diversity

vs. Casper

-42% species diversity

Most Common Species

Showing 20 most frequently observed species out of 14 total documented species.

Ondatra zibethicus

Muskrat

Very Common2 obs.

Pelecanus erythrorhynchos

American White Pelican

Very Common2 obs.

Recurvirostra americana

American avocet

Very Common1 obs.

Limnodromus scolopaceus

Long-billed Dowitcher

Very Common1 obs.

Gavia pacifica

Pacific Diver

Very Common1 obs.

Aechmophorus occidentalis

Western Grebe

Common1 obs.

Podiceps nigricollis

black-necked grebe

Common1 obs.

Plectrophenax nivalis

snow bunting

Common1 obs.

Cygnus columbianus

whistling swan

Common1 obs.

Mergus serrator

Red-breasted Merganser

Common1 obs.

Himantopus mexicanus

Black-necked Stilt

Common1 obs.

Tringa semipalmata

Willet

Occasional1 obs.

Spatula clypeata

Northern Shoveler

Occasional1 obs.

Sturnella neglecta

Western Meadowlark

Occasional1 obs.

Want the Complete Field Guide?

Get all 14 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.