Unnamed Tributary to Drainage Ditch 114 (UT West Branch Iowa R) Gladfelter Marsh (HW79)
Fish Session #1338
- Sample Date
- 8/29/2011
- Timeframe
- 1100-1130
- Reach Size
- 638 ft
- Method
- Standard Wadeable
- Sample Quality
- Poor
- Last Update
- 2/25/2015 12:50:34 PM
This site is on public land, such as a county park, state park, or state-managed wildlife area.
Warm Water
Poor
Overhanging vegetation made fishing very difficult with little to no visibility.
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 | |
|---|---|---|
|
Fathead Minnow
Latin: Pimephales promelas
Family: Leuciscidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Brook Stickleback
Latin: Culaea inconstans
Family: Gasterosteidae Tolerance: Sensitive Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 |
FIBI Calculation Factors
| Factor | Value |
|---|---|
| Drainage area (mi2) | 1.7960 |
| Log(DA) | 0.2543 |
| Total Fish | 4 |
| Fish per 500 ft | 3 |
| Total Species | 2 |
| # Excluded Taxa | 0 |
| # Exotic Species | 0 |
| # LMB-BG | 0 |
| Calculation Last Updated | 2/7/2025 2:34:26 PM |
Fish Index of Biotic Integrity
| Metric Name | Value | Score |
|---|---|---|
| Native Species | 2 | 4.72 |
| Sucker Species | 0 | 0 |
| Sensitive Species | 1 | 6.89 |
| Benthic Invertivore Species | 0 | 0 |
| Top 3 Abundance Percentage | 100 | 0 |
| Benthic Invertivore Percentage | 0 | 0 |
| Omnivore Percentage | 75 | 0 |
| Top Carnivore Percentage | 0 | 0 |
| Lithophilous Spawner Percentage | 0 | 0 |
| Tolerance Index | 7.5 | 0 |
| Adjusted Catch per Unit Effort | 0.16 | 0.02 |
| 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 | 85 |
| 75th Percentile | 62 |
| Median | 51 |
| 25th Percentile | 38 |
| Min | 13 |
| This Session's Score | 11 |
| Total Reference Site Samples | 125 |
| Mean | 50.2 |
| Standard Deviation | 15.93 |