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

Soap Creek Drakesville (REMAP #134)

Fish Session #632

Sample Date
8/16/2004
Timeframe
Unspecified  
Reach Size
760 ft
Method
Standard Wadeable
Sample Quality
Fair
Last Update
2/25/2025 12:54:51 PM

Fish Health

# DELTs
1
# Non-DELTs
0

Equipment

Backpack Shockers
2
Blocknets
0
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
17
Warm Water
Poor
Session Comments

Seemed to have a difficult time stopping shiners, despite the backpacks putting out 2-3 amps. Conductivity issues? Probably representative of population though. The sampling effectiveness was fair with no reason given. I put down equipment issues as that seemed like the only thing that fit. Kbk

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
Green Sunfish
Latin: Lepomis cyanellus
Family: Centrarchidae
Tolerance: Tolerant
Trophic: Generalist
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
131
Gizzard Shad
Latin: Dorosoma cepedianum
Family: Dorosomatidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
64
Red Shiner
Latin: Cyprinella lutrensis
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
55
Bigmouth Shiner
Latin: Ericymba dorsalis
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
34
Sand Shiner
Latin: Miniellus stramineus
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
22
Bluegill
Latin: Lepomis macrochirus
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
21
Bluntnose Minnow
Latin: Pimephales notatus
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
14
Channel Catfish
Latin: Ictalurus punctatus
Family: Ictaluridae
Tolerance: Intermediate
Trophic: Top Carnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
5
Bullhead Minnow
Latin: Pimephales vigilax
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
2
Quillback Carpsucker
Latin: Carpiodes cyprinus
Family: Catostomidae
Tolerance: Intermediate
Trophic: Omnivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
2
Largemouth Bass
Latin: Micropterus nigricans
Family: Centrarchidae
Tolerance: Intermediate
Trophic: Top Carnivore-LMB Exclusion
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

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 142.1190
Log(DA) 2.1527
Total Fish 352
Fish per 500 ft 232
Total Species 12
# Excluded Taxa 0
# Exotic Species 0
# LMB-BG 2
Calculation Last Updated 2/25/2025 12:54:51 PM

Fish Index of Biotic Integrity

Metric Name Value Score
Native Species 10 2.86
Sucker Species 1 1.42
Sensitive Species 0 0
Benthic Invertivore Species 0 0
Top 3 Abundance Percentage 71.02 4.5
Benthic Invertivore Percentage 0 0
Omnivore Percentage 38.92 5.42
Top Carnivore Percentage 1.7 3
Lithophilous Spawner Percentage 0 0
Tolerance Index 9.23 1.22
Adjusted Catch per Unit Effort 7.11 0.71
DELT Percentage Adjustment 0.28 0

FIBI Score Explained

Sites that score between 0 - 25 are considered poor. Fish abundance is usually lower than normal or, if fish are abundant, the collection is dominated by a few tolerant species. The number of native fish species present is low. Sensitive species and habitat specialists are absent or extremely rare. The population is dominated by just a few ubiquitous species that are tolerant of wide-ranging water quality and habitat conditions. Pioneering, introduced and/or short-lived fish species are typically the most abundant types of fish. Fish collected at poor sites often have a higher than normal occurrence of external physical anomalies.

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:

Loess Flats and Till Plains

This site is in the Loess Flats and Till Plains ecoregion.

Ecoregion Map
Max 63
75th Percentile 47
Median 41
25th Percentile 35
Min 16
This Session's Score 17
Total Reference Site Samples 49
Mean 40.8
Standard Deviation 12.08