Skunk River New London (REMAP #382)
Fish Session #2150
- Sample Date
- 9/16/2021
- Timeframe
- 0829-1030
- Reach Size
- 3281 ft
- Method
- Non-wadeable
- Sample Quality
- Good
- Last Update
- 2/24/2025 10:21:05 AM
This site is on privately-owned land. The DNR obtains permission from the landowner(s) prior to conducting any sampling surveys.
Warm Water
Fair
Very low water levels required moving the reach downstream. Effectiveness was very good, as the fish had nowhere to escape (upstream reach boundary was 2" deep across the entire channel).
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 | |
|---|---|---|
|
Emerald Shiner
Latin: Notropis atherinoides
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
355 | |
|
Gizzard Shad
Latin: Dorosoma cepedianum
Family: Dorosomatidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
181 | |
|
Freshwater Drum
Latin: Aplodinotus grunniens
Family: Sciaenidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
113 | |
|
Channel Catfish
Latin: Ictalurus punctatus
Family: Ictaluridae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
36 | |
|
River Carpsucker
Latin: Carpiodes carpio
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
28 | |
|
Spotfin Shiner
Latin: Cyprinella spiloptera
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
27 | |
|
Red Shiner
Latin: Cyprinella lutrensis
Family: Leuciscidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
26 | |
|
Bullhead Minnow
Latin: Pimephales vigilax
Family: Leuciscidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
22 | |
|
Common Carp
Latin: Cyprinus carpio
Family: Cyprinidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: True Is LithoSpawner: False Is Hybrid: False |
17 | |
|
Flathead Catfish
Latin: Pylodictis olivaris
Family: Ictaluridae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
15 | |
|
Green Sunfish
Latin: Lepomis cyanellus
Family: Centrarchidae Tolerance: Tolerant Trophic: Generalist Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
12 | |
|
Quillback Carpsucker
Latin: Carpiodes cyprinus
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
9 | |
|
Smallmouth Buffalo
Latin: Ictiobus bubalus
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
8 | |
|
Bluegill
Latin: Lepomis macrochirus
Family: Centrarchidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
7 | |
|
White Bass
Latin: Morone chrysops
Family: Moronidae Tolerance: Intermediate 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 | |
|
Largemouth Bass
Latin: Micropterus nigricans
Family: Centrarchidae Tolerance: Intermediate Trophic: Top Carnivore-LMB Exclusion Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Slenderhead Darter
Latin: Percina phoxocephala
Family: Percidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Shortnose Gar
Latin: Lepisosteus platostomus
Family: Lepisosteidae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Sand Shiner
Latin: Miniellus stramineus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Carpsucker spp.
Latin: Carpiodes spp.
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | [X] |
|
Shorthead Redhorse
Latin: Moxostoma macrolepidotum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
2 | |
|
Shovelnose Sturgeon
Latin: Scaphirhynchus platorynchus
Family: Acipenseridae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Stonecat
Latin: Noturus flavus
Family: Ictaluridae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
River Shiner
Latin: Alburnops blennius
Family: Leuciscidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Channel Shiner
Latin: Paranotropis wickliffi
Family: Leuciscidae Tolerance: Tolerant Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Smallmouth Bass
Latin: Micropterus dolomieu
Family: Centrarchidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Sauger
Latin: Sander canadensis
Family: Percidae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 |
FIBI Calculation Factors
| Factor | Value |
|---|---|
| Drainage area (mi2) | 4230.0000 |
| Log(DA) | 3.6263 |
| Total Fish | 888 |
| Fish per 500 ft | 135 |
| Total Species | 28 |
| # Excluded Taxa | 1 |
| # Exotic Species | 1 |
| # LMB-BG | 2 |
| Calculation Last Updated | 2/24/2025 10:21:06 AM |
Fish Index of Biotic Integrity
| Metric Name | Value | Score |
|---|---|---|
| Native Species | 24 | 6.86 |
| Sucker Species | 4 | 5 |
| Sensitive Species | 2 | 1.67 |
| Benthic Invertivore Species | 6 | 5 |
| Top 3 Abundance Percentage | 73.09 | 4.18 |
| Benthic Invertivore Percentage | 13.85 | 2.28 |
| Omnivore Percentage | 33.45 | 6.15 |
| Top Carnivore Percentage | 6.87 | 5.24 |
| Lithophilous Spawner Percentage | 0.23 | 0.08 |
| Tolerance Index | 6.33 | 5.83 |
| Adjusted Catch per Unit Effort | 19.72 | 1.97 |
| DELT Percentage Adjustment | 0.45 | 0 |
The Fish Index of Biotic Integrity for Large River sampling sessions is currently calculated using the standard wadeable stream FIBI metrics. The IBI scores for Large River sessions are typically lower than those calculated for wadeable streams, but are included for comparison purposes.
Large Rivers score lower due to the difficulty of sampling deep rivers. Boat shockers are also selective towards larger fish species, as it is more difficult to collect smaller fish species, such as minnows, in the deeper water.
FIBI Score Explained
Sites that score between 26 - 50 are considered fair. Fish abundance ranges from lower than average to very abundant. If fish are abundant, tolerant species are usually dominant. Native fish species usually equal ten or more species. The three most abundant species typically comprise two-thirds or more of the total number of fish. One or more sensitive species, long-lived fish species or benthic habitat specialists such as suckers (Catostomidae) are present. Top carnivore species are often, but not always present in low abundance. Species that are able to utilize a wide range of food items including plant, animal and detritus are usually more common than specialized feeders, such as benthic invertivore fish. Species that require silt-free, rock substrate for spawning or feeding are typically rare or absent. Fish condition is usually good; however, elevated levels of fish exhibiting external anomalies associated with disease or stress are not unusual.
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 | 63 |
| 75th Percentile | 47 |
| Median | 41 |
| 25th Percentile | 35 |
| Min | 16 |
| This Session's Score | 40 |
| Total Reference Site Samples | 49 |
| Mean | 40.8 |
| Standard Deviation | 12.08 |