Shell Rock River Kensett (REMAP #23)
Fish Session #2071
- Sample Date
- 9/17/2020
- Timeframe
- 1000-1130
- Reach Size
- 1187 ft
- Method
- Standard Wadeable
- Sample Quality
- Good
- Last Update
- 4/2/2021 12:29:39 PM
This site is on privately-owned land. The DNR obtains permission from the landowner(s) prior to conducting any sampling surveys.
Warm Water
Good
Two barges were used (SHL Ankeny crew assisted). Many more suckers were observed than could be netted. Coarse substrates also made darter capture difficult.
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 | |
|---|---|---|
|
Shorthead Redhorse
Latin: Moxostoma macrolepidotum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
255 | |
|
White Sucker
Latin: Catostomus commersonii
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
210 | |
|
Banded Darter
Latin: Etheostoma zonale
Family: Percidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
127 | |
|
Johnny Darter
Latin: Etheostoma nigrum
Family: Percidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
120 | |
|
Green Sunfish
Latin: Lepomis cyanellus
Family: Centrarchidae Tolerance: Tolerant Trophic: Generalist Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
49 | |
|
Quillback Carpsucker
Latin: Carpiodes cyprinus
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
38 | |
|
Smallmouth Bass
Latin: Micropterus dolomieu
Family: Centrarchidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
34 | |
|
Common Carp
Latin: Cyprinus carpio
Family: Cyprinidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: True Is LithoSpawner: False Is Hybrid: False |
26 | |
|
Spotfin Shiner
Latin: Cyprinella spiloptera
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
24 | |
|
Common Shiner
Latin: Luxilus cornutus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
22 | |
|
Golden Redhorse
Latin: Moxostoma erythrurum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
6 | |
|
Fantail Darter
Latin: Etheostoma flabellare
Family: Percidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
6 | |
|
Yellow Perch
Latin: Perca flavescens
Family: Percidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
6 | |
|
Rock Bass
Latin: Ambloplites rupestris
Family: Centrarchidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
5 | |
|
Northern Pike
Latin: Esox lucius
Family: Esocidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
5 | |
|
Bluntnose Minnow
Latin: Pimephales notatus
Family: Leuciscidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
Hornyhead Chub
Latin: Nocomis biguttatus
Family: Leuciscidae Tolerance: Sensitive Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
Stonecat
Latin: Noturus flavus
Family: Ictaluridae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
Slenderhead Darter
Latin: Percina phoxocephala
Family: Percidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
Creek Chub
Latin: Semotilus atromaculatus
Family: Leuciscidae Tolerance: Tolerant Trophic: Generalist Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Bluegill
Latin: Lepomis macrochirus
Family: Centrarchidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Orangespotted Sunfish
Latin: Lepomis humilis
Family: Centrarchidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Yellow Bullhead
Latin: Ameiurus natalis
Family: Ictaluridae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
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) | 306.4300 |
| Log(DA) | 2.4863 |
| Total Fish | 962 |
| Fish per 500 ft | 405 |
| Total Species | 24 |
| # Excluded Taxa | 0 |
| # Exotic Species | 1 |
| # LMB-BG | 1 |
| Calculation Last Updated | 2/7/2025 2:32:49 PM |
Fish Index of Biotic Integrity
| Metric Name | Value | Score |
|---|---|---|
| Native Species | 22 | 6.29 |
| Sucker Species | 4 | 5 |
| Sensitive Species | 6 | 5 |
| Benthic Invertivore Species | 8 | 6.67 |
| Top 3 Abundance Percentage | 61.54 | 5.98 |
| Benthic Invertivore Percentage | 54.57 | 9.21 |
| Omnivore Percentage | 28.9 | 6.75 |
| Top Carnivore Percentage | 4.68 | 4.33 |
| Lithophilous Spawner Percentage | 27.13 | 9.09 |
| Tolerance Index | 4.5 | 8.73 |
| Adjusted Catch per Unit Effort | 74.14 | 7.41 |
| DELT Percentage Adjustment | 0.21 | 0 |
FIBI Score Explained
Sites that score between 51 - 70 are considered good. Fish (excluding tolerant species) are fairly abundant to very abundant. If high numbers are present, intermediately tolerant species or tolerant species are usually dominant. A moderately high number of fish species belonging to several families are present. The three most abundant fish species typically comprise two-thirds or less of the total number of fish. Several long-lived species and benthic invertivore species are present. One or more sensitive species are usually present. Top carnivore species are usually present in low numbers and often one or more life stages are missing. Species that require silt-free, rock substrate for spawning or feeding are present in low proportion to the total number of fish. Fish condition is good; typically less than 1% of the total number of fish exhibits external anomalies associated with disease or stress.
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:
| Max | 92 |
| 75th Percentile | 77 |
| Median | 70 |
| 25th Percentile | 60 |
| Min | 27 |
| This Session's Score | 68 |
| Total Reference Site Samples | 140 |
| Mean | 67.94 |
| Standard Deviation | 13.97 |