Battle Creek Battle Creek (REMAP #15)
Analysis Summary for Series #599
Benthic Macroinvertebrate Index of Biotic Integrity (BMIBI)
| Metric Name | Value | Score |
|---|---|---|
| MH Total Taxa | 28 | 5.69 |
| SH Total Taxa | 12.67 | 6.47 |
| MH EPT Taxa | 12 | 5.21 |
| SH EPT Taxa | 8.33 | 6.25 |
| MH Sensitive Taxa | 1 | 0.96 |
| SH Ephem % | 46.45 | 5.94 |
| SH EPT % | 61.54 | 6.44 |
| SH Chiron % | 21.9 | 7.89 |
| SH Scraper % | 14.59 | 3.26 |
| SH Top3Dom % | 57.9 | 7.16 |
| SH Dom FFG % | 69 | 5.17 |
| MHBI | 5.64 | 5.04 |
| *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 | 9/11/2002 |
| Sampling Series | Series #599 |
| Drainage Area (mi2) | 51.976 |
| Log(DA) | 1.71580285375731 |
| Calculation Last Updated | 7/22/2025 3:28:56 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and habitat specialists are rare; EPT taxa are still dominant in abundance; however, the most-sensitive EPT taxa have been replaced by ept taxa that are more tolerant of organic enrichment; the community is not well-balanced; a few taxa clearly dominate in abundance, collector-gatherers or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 | 62 |
| Median | 53 |
| 25th Percentile | 46 |
| Min | 28 |
| This Session's Score | 55 |
| Total Reference Site Samples | 39 |
| Mean | 53.74 |
| Standard Deviation | 10.33 |