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

Duck Creek Blue Grass (REMAP #19)

Fish Session #1909

Sample Date
9/12/2018
Timeframe
0933-0954  
Reach Size
503 ft
Method
Standard Wadeable
Sample Quality
Good
Last Update
1/31/2019 8:16:38 AM

Fish Health

# DELTs
0
# Non-DELTs
0

Equipment

Backpack Shockers
1
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
9
Warm Water
Poor
Session Comments

No comments recorded.

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
Creek Chub
Latin: Semotilus atromaculatus
Family: Leuciscidae
Tolerance: Tolerant
Trophic: Generalist
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
22
Western Blacknose Dace
Latin: Rhinichthys obtusus
Family: Leuciscidae
Tolerance: Intermediate
Trophic: Insectivore
Is Exotic: False
Is LithoSpawner: False
Is Hybrid: False
10

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 1.8680
Log(DA) 0.2714
Total Fish 32
Fish per 500 ft 32
Total Species 2
# Excluded Taxa 0
# Exotic Species 0
# LMB-BG 0
Calculation Last Updated 2/7/2025 2:34:29 PM

Fish Index of Biotic Integrity

Metric Name Value Score
Native Species 2 4.42
Sucker Species 0 0
Sensitive Species 0 0
Benthic Invertivore Species 0 0
Top 3 Abundance Percentage 100 0
Benthic Invertivore Percentage 0 0
Omnivore Percentage 0 2.5
Top Carnivore Percentage 0 0
Lithophilous Spawner Percentage 0 0
Tolerance Index 8.44 2.48
Adjusted Catch per Unit Effort 1.99 0.2
DELT Percentage Adjustment 0 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:

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 9
Total Reference Site Samples 105
Mean 49.02
Standard Deviation 14.97