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

Mossy Glen Creek Edgewood - Mossy Glen Preserve

Fish Session #2367

Sample Date
7/17/2023
Timeframe
10:07-10:30  
Reach Size
620 ft
Method
Standard Wadeable
Sample Quality
Good
Last Update
1/3/2024 10:32:38 AM

Fish Health

# DELTs
0
# Non-DELTs
0

Equipment

Backpack Shockers
1
Blocknets
0
Property Access Notice

This site is on public land, such as a county park, state park, or state-managed wildlife area.

FIBI Score
9
Warm Water
Poor
Session Comments

Surprisingly low numbers in entire stream reach. Shocked several deep pools with very few fish. Last full sample (2019) we caught 257 brown trout, this time we caught 14.

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
Brown Trout
Latin: Salmo trutta
Family: Salmonidae
Tolerance: Sensitive
Trophic: Top Carnivore
Is Exotic: True
Is LithoSpawner: False
Is Hybrid: False
14

FIBI Calculation Factors

Factor Value
Drainage area (mi2) 1.0040
Log(DA) 0.0017
Total Fish 14
Fish per 500 ft 11
Total Species 1
# Excluded Taxa 0
# Exotic Species 1
# LMB-BG 0
Calculation Last Updated 2/7/2025 2:34:16 PM

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 Reference Site. Reference sites represent natural stream qualities that are least disturbed by human activities within the watershed. These sites are then grouped by ecoregion to establish a benchmark against which other streams in the same ecoregion 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