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

Wexford Creek Harpers Ferry (REMAP #393)

Fish Session #2167

Sample Date
10/11/2021
Timeframe
1051-1128  
Reach Size
549 ft
Method
Standard Wadeable
Sample Quality
Good
Last Update
2/24/2025 10:20:12 AM

Fish Health

# DELTs
0
# Non-DELTs
0

Equipment

Backpack Shockers
3
Blocknets
1
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
49
Warm Water
Fair
Session Comments

Beaver dam provided barrier at top of the reach.

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
White Sucker
Latin: Catostomus commersonii
Family: Catostomidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
386
Johnny Darter
Latin: Etheostoma nigrum
Family: Percidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
79
Bluegill
Latin: Lepomis macrochirus
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
34
Brook Stickleback
Latin: Culaea inconstans
Family: Gasterosteidae
Tolerance: Sensitive
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
22
Spotfin Shiner
Latin: Cyprinella spiloptera
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
12
Pumpkinseed
Latin: Lepomis gibbosus
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
12
Mud Darter
Latin: Etheostoma asprigene
Family: Percidae
Tolerance: Intermediate
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
9
Spottail Shiner
Latin: Hudsonius hudsonius
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
8
Weed Shiner
Latin: Alburnops texanus
Family: Leuciscidae
Tolerance: Sensitive
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
4
Hybrid: Sunfish
Latin: Centrarchidae spp.
Family: Centrarchidae
Tolerance: N/A
Trophic: N/A
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: True
3 [X]
Central Mudminnow
Latin: Umbra limi
Family: Esocidae
Tolerance: Tolerant
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
2
Common Carp
Latin: Cyprinus carpio
Family: Cyprinidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: True
Is LithoSpawner: False
Is Hybrid: False
1
Smallmouth Bass
Latin: Micropterus dolomieu
Family: Centrarchidae
Tolerance: Sensitive
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Logperch
Latin: Percina caprodes
Family: Percidae
Tolerance: Sensitive
Trophic: Benthic Invertivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
1
Brown Trout
Latin: Salmo trutta
Family: Salmonidae
Tolerance: Sensitive
Trophic: Top Carnivore
Is Exotic: True
Is LithoSpawner: False
Is Hybrid: False
1
Rainbow Trout
Latin: Oncorhynchus mykiss
Family: Salmonidae
Tolerance: Sensitive
Trophic: Top Carnivore
Is Exotic: True
Is LithoSpawner: False
Is Hybrid: False
1
Collection Notes
[X] = Excluded from species count metrics

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 15.4000
Log(DA) 1.1875
Total Fish 576
Fish per 500 ft 525
Total Species 16
# Excluded Taxa 1
# Exotic Species 3
# LMB-BG 1
Calculation Last Updated 2/24/2025 10:20:12 AM

Fish Index of Biotic Integrity

Metric Name Value Score
Native Species 11 5.56
Sucker Species 1 2.58
Sensitive Species 6 8.85
Benthic Invertivore Species 3 4.21
Top 3 Abundance Percentage 86.63 2.89
Benthic Invertivore Percentage 15.53 5.49
Omnivore Percentage 69.63 1.57
Top Carnivore Percentage 0.52 4.07
Lithophilous Spawner Percentage 0 0
Tolerance Index 4.76 8.32
Adjusted Catch per Unit Effort 103.46 10
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 survey streams are compared.

EcoRegion Comparison

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

Paleozoic Plateau (Driftless Area)

This site is in the Paleozoic Plateau (Driftless Area) ecoregion.

Ecoregion Map
Max 91
75th Percentile 63
Median 54
25th Percentile 47
Min 9
This Session's Score 49
Total Reference Site Samples 114
Mean 55.61
Standard Deviation 16.18