Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

South Raccoon River Nations Bridge Co Park- Stuart

Fish Session #757

Sample Date
9/22/2005
Timeframe
10:40-13:10  
Reach Size
1246 ft
Method
Standard Wadeable
Sample Quality
Good
Last Update
5/24/2006 12:00:00 AM

Fish Health

# DELTs
3
# Non-DELTs
0

Equipment

Backpack Shockers
1
Blocknets
0
Barge Shocker
True
Property Access Notice

This site is on public land, such as a county park, state park, or state-managed wildlife area.

FIBI Score
59
Warm Water
Good
Session Comments

Third probe broke 50yds upstream from boatramp so backpack was used on shallow riffle.

Collected Fish

Identity verification status for this species
Size Class: Typically only collected for sportfish
Taxa excluded from species count metrics.
Click on species name for more information about that species
Species Catch
Spotfin Shiner
Latin: Cyprinella spiloptera
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
488
Channel Catfish
Latin: Ictalurus punctatus
Family: Ictaluridae
Tolerance: Intermediate
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
261
Stonecat
Latin: Noturus flavus
Family: Ictaluridae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
170
Gizzard Shad
Latin: Dorosoma cepedianum
Family: Dorosomatidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
117
Suckermouth Minnow
Latin: Phenacobius mirabilis
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: True
Is Hybrid: False
109
Sand Shiner
Latin: Miniellus stramineus
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
90
Bluntnose Minnow
Latin: Pimephales notatus
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
59
Central Stoneroller
Latin: Campostoma anomalum
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Herbivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
27
River Carpsucker
Latin: Carpiodes carpio
Family: Catostomidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
21
Creek Chub
Latin: Semotilus atromaculatus
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Generalist
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
17
Bluegill
Latin: Lepomis macrochirus
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
16
Bigmouth Shiner
Latin: Ericymba dorsalis
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
13
Green Sunfish
Latin: Lepomis cyanellus
Family: Centrarchidae
Tolerance: Tolerant
Trophic: Generalist
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
11
Bullhead Minnow
Latin: Pimephales vigilax
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
10
Flathead Catfish
Latin: Pylodictis olivaris
Family: Ictaluridae
Tolerance: Intermediate
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
10
Shorthead Redhorse
Latin: Moxostoma macrolepidotum
Family: Catostomidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: True
Is Hybrid: False
9
Johnny Darter
Latin: Etheostoma nigrum
Family: Percidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
8
Slenderhead Darter
Latin: Percina phoxocephala
Family: Percidae
Tolerance: Sensitive
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
6
Freshwater Drum
Latin: Aplodinotus grunniens
Family: Sciaenidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
5
Fantail Darter
Latin: Etheostoma flabellare
Family: Percidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
3
Common Carp
Latin: Cyprinus carpio
Family: Cyprinidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: True
Is LithoSpawner: False
Is Hybrid: False
1
Quillback Carpsucker
Latin: Carpiodes cyprinus
Family: Catostomidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
White Sucker
Latin: Catostomus commersonii
Family: Catostomidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Largemouth Bass
Latin: Micropterus nigricans
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Top Carnivore-LMB Exclusion
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
White Crappie
Latin: Pomoxis annularis
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Black Crappie
Latin: Pomoxis nigromaculatus
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Yellow Bass
Latin: Morone mississippiensis
Family: Moronidae
Tolerance: Intermediate
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 330.2590
Log(DA) 2.5189
Total Fish 1457
Fish per 500 ft 585
Total Species 27
# Excluded Taxa 0
# Exotic Species 1
# LMB-BG 2
Calculation Last Updated 2/7/2025 2:32:35 PM

Fish Index of Biotic Integrity

Metric Name Value Score
Native Species 24 6.86
Sucker Species 4 5
Sensitive Species 1 0.83
Benthic Invertivore Species 7 5.83
Top 3 Abundance Percentage 63.07 5.74
Benthic Invertivore Percentage 21.28 3.54
Omnivore Percentage 14.41 8.66
Top Carnivore Percentage 18.81 8.67
Lithophilous Spawner Percentage 8.1 2.7
Tolerance Index 5.73 6.78
Adjusted Catch per Unit Effort 99.44 9.94
DELT Percentage Adjustment 0.21 0

FIBI Score Explained

Sites that score between 51 - 70 are considered good. Fish (excluding tolerant species) are fairly abundant to very abundant. If high numbers are present, intermediately tolerant species or tolerant species are usually dominant. A moderately high number of fish species belonging to several families are present. The three most abundant fish species typically comprise two-thirds or less of the total number of fish. Several long-lived species and benthic invertivore species are present. One or more sensitive species are usually present. Top carnivore species are usually present in low numbers and often one or more life stages are missing. Species that require silt-free, rock substrate for spawning or feeding are present in low proportion to the total number of fish. Fish condition is good; typically less than 1% of the total number of fish exhibits external anomalies associated with disease or stress.

This location has been classified as a Reference Site. Reference sites represent natural stream qualities that are least disturbed by human activities within the watershed. These sites are then grouped by ecoregion to establish a benchmark against which other streams in the same ecoregion are compared.

EcoRegion Comparison

Scores for a sampling session are compared against reference sites within the same ecoregion:

Rolling Loess Prairies

This site is in the Rolling Loess Prairies ecoregion.

Ecoregion Map
Max 83
75th Percentile 59
Median 48
25th Percentile 38
Min 10
This Session's Score 59
Total Reference Site Samples 105
Mean 49.02
Standard Deviation 14.97