Battle Creek Battle Creek (REMAP #15)
Analysis Summary for Series #2100
Benthic Macroinvertebrate Index of Biotic Integrity (BMIBI)
| Metric Name | Value | Score |
|---|---|---|
| MH Total Taxa | 23 | 4.67 |
| SH Total Taxa | 7 | 3.58 |
| MH EPT Taxa | 12 | 5.21 |
| SH EPT Taxa | 5 | 3.75 |
| MH Sensitive Taxa | 3 | 2.89 |
| SH Ephem % | 10.71 | 1.37 |
| SH EPT % | 29.81 | 3.12 |
| SH Chiron % | 68.33 | 3.2 |
| SH Scraper % | 0 | 0 |
| SH Top3Dom % | 84.04 | 2.71 |
| SH Dom FFG % | 80.28 | 3.29 |
| MHBI | 5.94 | 3.93 |
| *Mouse-over metric for full name | ||
| **Final IBI is sum of scores multiplied by 0.8333 | ||
Analysis Factors
| Factor | Value |
|---|---|
| BMIBI Type | Warm Water |
| Sample Date | 8/7/2017 |
| Sampling Series | Series #2100 |
| Drainage Area (mi2) | 51.976 |
| Log(DA) | 1.71580285375731 |
| Calculation Last Updated | 7/22/2025 3:38:09 PM |
| Sampling Gear | Hess |
Sessions used in this analysis
Warm Water
Fair
BMIBI Score Explained
This site was analyzed using the BMIBI-Warm Water assessment methodology.
Sites that score between 31 - 55 are considered fair. Total taxa richness and EPT (Ephemeroptera, Plecoptera, Trichoptera) taxa richness are noticeably reduced from optimum levels; sensitive species and habitat specialists are rare; EPT taxa are still dominant in abundance; however, the most-sensitive EPT taxa have been replaced by ept taxa that are more tolerant of organic enrichment; the community is not well-balanced; a few taxa clearly dominate in abundance, collector-gatherers or collector-filterers often comprise more than 50% of the community.
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 | 72 |
| 75th Percentile | 61 |
| Median | 53 |
| 25th Percentile | 47 |
| Min | 28 |
| This Session's Score | 31 |
| Total Reference Site Samples | 37 |
| Mean | 53.73 |
| Standard Deviation | 10.44 |