Douglas Creek Emerson (IC3)
Fish Session #1465
- Sample Date
- 9/26/2013
- Timeframe
- 0749-0811
- Reach Size
- 746 ft
- Method
- Standard Wadeable
- Sample Quality
- Good
- Last Update
- 1/18/2017 9:23:22 AM
This site is on privately-owned land. The DNR obtains permission from the landowner(s) prior to conducting any sampling surveys.
Warm Water
Poor
Riffles used as block nets.
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 |
88 | |
|
Bigmouth Shiner
Latin: Ericymba dorsalis
Family: Leuciscidae Tolerance: Tolerant Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
65 | |
|
Sand Shiner
Latin: Miniellus stramineus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
44 | |
|
Fathead Minnow
Latin: Pimephales promelas
Family: Leuciscidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
25 |
FIBI Calculation Factors
| Factor | Value |
|---|---|
| Drainage area (mi2) | 4.4040 |
| Log(DA) | 0.6438 |
| Total Fish | 222 |
| Fish per 500 ft | 149 |
| Total Species | 4 |
| # Excluded Taxa | 0 |
| # Exotic Species | 0 |
| # LMB-BG | 0 |
| Calculation Last Updated | 2/7/2025 2:32:28 PM |
Fish Index of Biotic Integrity
| Metric Name | Value | Score |
|---|---|---|
| Native Species | 4 | 5.27 |
| Sucker Species | 0 | 0 |
| Sensitive Species | 0 | 0 |
| Benthic Invertivore Species | 0 | 0 |
| Top 3 Abundance Percentage | 88.74 | 4.48 |
| Benthic Invertivore Percentage | 0 | 0 |
| Omnivore Percentage | 11.26 | 10 |
| Top Carnivore Percentage | 0 | 0 |
| Lithophilous Spawner Percentage | 0 | 0 |
| Tolerance Index | 9.01 | 1.57 |
| Adjusted Catch per Unit Effort | 5.9 | 0.59 |
| 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 Candidate Reference Site. Further study is required to determine if this site represents natural stream qualities that are least disturbed by human activities within the watershed.
EcoRegion Comparison
Scores for a sampling session are compared against reference sites within the same ecoregion:
| Max | 52 |
| 75th Percentile | 42 |
| Median | 36 |
| 25th Percentile | 27 |
| Min | 12 |
| This Session's Score | 20 |
| Total Reference Site Samples | 24 |
| Mean | 34.04 |
| Standard Deviation | 10.79 |