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

Little Wapsipinicon River W of Oelwein (LW001)

Fish Session #176

Sample Date
7/29/2001
Timeframe
59.0
Reach Size
1440 ft
Method
Standard Wadeable
Sample Quality
Good
Last Update
1/25/2016 2:43:21 PM

Fish Health

# DELTs
0
# Non-DELTs
0

Equipment

Backpack Shockers
0
Blocknets
0
Barge Shocker
True
Boat Shocker
False
This sampling session was collected as part of the FishNet program.
Notice: This sampling session has not been through a Quality Assurance check and may contain errors. This alert will be removed once the QA has been completed.
Property Access Notice

This site is on privately-owned land. The DNR obtains permission from the landowner(s) prior to conducting any sampling surveys.

FIBI Score
50
Warm Water
Fair
Session Comments

No comments recorded.

Collected Fish

Identity verification status for this species
Morphometrics: Length/Weight measurements of individual specimens
Taxa excluded from species count metrics.
Click on species name for more information about that species
Species Catch
Bigmouth Shiner
Latin: Notropis dorsalis
Family: Cyprinidae
Tolerance: Tolerant
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
116
Common Shiner
Latin: Luxilus cornutus
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
89
Creek Chub
Latin: Semotilus atromaculatus
Family: Cyprinidae
Tolerance: Tolerant
Trophic: Generalist
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
81
Hornyhead Chub
Latin: Nocomis biguttatus
Family: Cyprinidae
Tolerance: Sensitive
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
81
Green Sunfish
Latin: Lepomis cyanellus
Family: Centrarchidae
Tolerance: Tolerant
Trophic: Generalist
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
70
White Sucker
Latin: Catostomus commersonii
Family: Catostomidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
61
Western Blacknose Dace
Latin: Rhinichthys obtusus
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
43
Johnny Darter
Latin: Etheostoma nigrum
Family: Percidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
37
Fantail Darter
Latin: Etheostoma flabellare
Family: Percidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
31
Spotfin Shiner
Latin: Cyprinella spiloptera
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
21
Bluegill
Latin: Lepomis macrochirus
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
17
Sand Shiner
Latin: Notropis stramineus
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
17
Golden Redhorse
Latin: Moxostoma erythrurum
Family: Catostomidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: True
Is Hybrid: False
15
Central Stoneroller
Latin: Campostoma anomalum
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Herbivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
12
Stonecat
Latin: Noturus flavus
Family: Ictaluridae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
9
Northern Hog Sucker
Latin: Hypentelium nigricans
Family: Catostomidae
Tolerance: Sensitive
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: True
Is Hybrid: False
7
American Brook Lamprey
Latin: Lethenteron appendix
Family: Petromyzontidae
Tolerance: Sensitive
Trophic: Filter
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
6
Bluntnose Minnow
Latin: Pimephales notatus
Family: Cyprinidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
5
Carmine Shiner
Latin: Notropis percobromus
Family: Cyprinidae
Tolerance: Sensitive
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
3
Blackside Darter
Latin: Percina maculata
Family: Percidae
Tolerance: Sensitive
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
2
Brassy Minnow
Latin: Hybognathus hankinsoni
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Herbivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
2
Orangespotted Sunfish
Latin: Lepomis humilis
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
2
Suckermouth Minnow
Latin: Phenacobius mirabilis
Family: Cyprinidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: True
Is Hybrid: False
2
Fathead Minnow
Latin: Pimephales promelas
Family: Cyprinidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Largemouth Bass
Latin: Micropterus salmoides
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Largemouth Bass
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Southern Redbelly Dace
Latin: Chrosomus erythrogaster
Family: Cyprinidae
Tolerance: Sensitive
Trophic: Herbivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 99.0000
Log(DA) 1.9956
Total Fish 732
Fish per 500 ft 254
Total Species 26
# Excluded Species 0
# Exotic Species 0
# LMB-BG 2
Calculation Last Updated 1/8/2021 3:02:24 PM

Fish Index of Biotic Integrity

Metric Name Value Score
Native Species 24 7.21
Sucker Species 3 4.61
Sensitive Species 6 5.27
Benthic Invertivore Species 7 5.85
Top 3 Abundance Percentage 39.07 9.47
Benthic Invertivore Percentage 14.07 2.96
Omnivore Percentage 9.15 9.35
Top Carnivore Percentage 0 0
Lithophilous Spawner Percentage 3.28 1.37
Tolerance Index 6.18 6.06
Adjusted Catch per Unit Effort 31.88 3.19
DELT Percentage Adjustment 0 0

FIBI Score Explained

Sites that score between 26 - 50 are considered fair. Fish abundance ranges from lower than average to very abundant. If fish are abundant, tolerant species are usually dominant. Native fish species usually equal ten or more species. The three most abundant species typically comprise two-thirds or more of the total number of fish. One or more sensitive species, long-lived fish species or benthic habitat specialists such as suckers (Catostomidae) are present. Top carnivore species are often, but not always present in low abundance. Species that are able to utilize a wide range of food items including plant, animal and detritus are usually more common than specialized feeders, such as benthic invertivore fish. Species that require silt-free, rock substrate for spawning or feeding are typically rare or absent. Fish condition is usually good; however, elevated levels of fish exhibiting external anomalies associated with disease or stress are not unusual.

This location has been classified as a survey site. Survey sites are compared to reference sites within the same ecoregion. A reference site represents natural stream qualities that are least disturbed by human activities within the watershed. Reference sites are grouped by ecoregion to establish a benchmark against which these test streams are compared.

EcoRegion Comparison

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

Iowan Surface

This site is in the Iowan Surface ecoregion.

Ecoregion Map
Max 92
75th Percentile 77
Median 70
25th Percentile 58
Min 27
This Session's Score 50
Total Reference Site Samples 128
Mean 67.3
Standard Deviation 13.84