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

Unnamed tributary to Pine Creek N of Bluffton (UI_PIC_07)

Fish Session #880

Sample Date
8/8/2023
Timeframe
14 min
Reach Size
738 ft
Method
Standard Wadeable
Sample Quality
Good
Last Update
1/23/2024 11:47:37 AM

Fish Health

# DELTs
0
# Non-DELTs
0

Equipment

Backpack Shockers
1
Blocknets
0
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 notice 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
9
Warm Water
Poor
Session Comments

Part of the Cold Water project. Water temperature 56 F, Conductivity 650 µS/cm. The fish survey was completed in 3 runs, these runs correspond to the same locations of the runs for the habitat survey. In run 1 we sampled 3 Brown Trout, run 2 included 2 Brown Trout , run 3 we did not sample any fish. This survey represents the total from all of the runs combined.

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
Brown Trout
Latin: Salmo trutta
Family: Salmonidae
Tolerance: Sensitive
Trophic: Top Carnivore
Is Exotic: True
Is LithoSpawner: False
Is Hybrid: False
5

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 0.1800
Log(DA) 0.0001
Total Fish 5
Fish per 500 ft 3
Total Species 1
# Excluded Species 0
# Exotic Species 1
# LMB-BG 0
Calculation Last Updated 6/20/2024 10:22:44 AM

Fish Index of Biotic Integrity

Metric Name Value Score
Native Species 0 0
Sucker Species 0 0
Sensitive Species 1 10
Benthic Invertivore Species 0 0
Top 3 Abundance Percentage 100 0
Benthic Invertivore Percentage 0 0
Omnivore Percentage 0 0
Top Carnivore Percentage 100 0
Lithophilous Spawner Percentage 0 0
Tolerance Index 0 0
Adjusted Catch per Unit Effort 0 0
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:

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 9
Total Reference Site Samples 114
Mean 55.61
Standard Deviation 16.18