Angostura Reservoir

Ecosystem Overview

The Angostura Reservoir ecosystem supports 12 documented wildlife species across 11 taxonomic genera. Located in Fall River County, South Dakota, 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. Compared to nearby Hot Springs, Angostura Reservoir hosts 20% more species diversity. This location ranks #2 for species diversity among 3 Fall River County County natural areas, placing it in the 33th 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 3 locations

Species Distribution

Very Common3 species

Common4 species

Occasional3 species

Rare2 species

Regional Context

Regional Ranking

#2 of 3 locations

33th percentile for diversity

vs. Hot Springs

+20% 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 12 total documented species.

Dissosteira carolina

Carolina Grasshopper

Very Common2 obs.

Cicindela repanda

Bronzed Tiger Beetle

Very Common1 obs.

Microbembex monodonta

Very Common1 obs.

Sympetrum corruptum

Variegated Meadowhawk

Very Common1 obs.

Schizachyrium scoparium

Small Bluestem

Very Common1 obs.

Yucca glauca

small soapweed yucca

Common1 obs.

Melilotus albus

white melilot

Common1 obs.

Xanthium strumarium

rough cocklebur

Common1 obs.

Artemisia frigida

fringed-sage

Common1 obs.

Larus smithsonianus

American Herring Gull

Common1 obs.

Enallagma civile

Familiar Bluet

Common1 obs.

Melilotus officinalis

Sweetclover

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 Angostura Reservoir. 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 Angostura Reservoir. Perfect for outdoor adventures, education, and nature exploration.

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$6.99

Regional Comparison

Regional Ranking

Species Count

-78%

vs. Regional Average

Compared to 2 nearby locations in Fall River County County, South Dakota

Nearby Natural Areas

Hot Springs

Importance: 0.38

10 species

+20% vs. current

Fall River County

Importance: 0.37

97 species

-88% 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 Fall River 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

-78%

vs. Regional Average

Compared to 2 nearby locations in Fall River County County, South Dakota

Nearby Natural Areas

Hot Springs

Importance: 0.38

10 species

+20% vs. current

Fall River County

Importance: 0.37

97 species

-88% 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 3 locations

Species Distribution

Very Common3 species

Common4 species

Occasional3 species

Rare2 species

Regional Context

Regional Ranking

#2 of 3 locations

33th percentile for diversity

vs. Hot Springs

+20% species diversity

Most Common Species

Showing 20 most frequently observed species out of 12 total documented species.

Dissosteira carolina

Carolina Grasshopper

Very Common2 obs.

Cicindela repanda

Bronzed Tiger Beetle

Very Common1 obs.

Microbembex monodonta

Very Common1 obs.

Sympetrum corruptum

Variegated Meadowhawk

Very Common1 obs.

Schizachyrium scoparium

Small Bluestem

Very Common1 obs.

Yucca glauca

small soapweed yucca

Common1 obs.

Melilotus albus

white melilot

Common1 obs.

Xanthium strumarium

rough cocklebur

Common1 obs.

Artemisia frigida

fringed-sage

Common1 obs.

Larus smithsonianus

American Herring Gull

Common1 obs.

Enallagma civile

Familiar Bluet

Common1 obs.

Melilotus officinalis

Sweetclover

Occasional1 obs.

Want the Complete Field Guide?

Get all 12 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.