Silver Creek N of Waukon (REMAP #425)
Analysis Summary for Series #2234
Benthic Macroinvertebrate Index of Biotic Integrity (BMIBI)
| Metric Name | Value | Score |
|---|---|---|
| MH Sensitive Taxa | 4 | 4.44 |
| SH Dom FFG % | 59.22 | 6.26 |
| MH Total CW Taxa | 2 | 3.94 |
| MH Tricop No Hydrop | 3 | 4.64 |
| MH Tolerant % | 14.29 | 7.81 |
| SH CW % | 0 | 0 |
| SH Hydropsyche % | 2.63 | 8.23 |
| SH Hydropsychinae % | 8.56 | 8.71 |
| BTI | 5.22 | 4.47 |
| *Mouse-over metric for full name | ||
| **Final IBI is sum of scores multiplied by 1.1111 | ||
Analysis Factors
| Factor | Value |
|---|---|
| BMIBI Type | Cold Water |
| Sample Date | 8/6/2019 |
| Sampling Series | Series #2234 |
| Drainage Area (mi2) | 14.3 |
| Log(DA) | 0 |
| Calculation Last Updated | 7/22/2025 3:35:09 PM |
| Sampling Gear | Hess |
Sessions used in this analysis
BMIBI Score
54
Cold Water
Not Assigned
BMIBI Score Explained
This site was analyzed using the BMIBI-Cold Water assessment methodology.
A detailed analysis of the IBI score has not yet been determined for coldwater IBI metrics.
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:
Paleozoic Plateau (Driftless Area)
This site is in the Paleozoic Plateau (Driftless Area) ecoregion.
| Max | 92 |
| 75th Percentile | 77 |
| Median | 68 |
| 25th Percentile | 59 |
| Min | 42 |
| This Session's Score | 54 |
| Total Reference Site Samples | 106 |
| Mean | 67.95 |
| Standard Deviation | 12.17 |