Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,316,875
Total Invertebrates Collected
958
Unique Taxa
2,874
Total Surveys
2,686
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 254,550 |
| Cheumatopsyche | 126,383 |
| Baetis intercalaris | 40,674 |
| Tricorythodes | 40,574 |
| Hydropsychidae | 37,677 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 68.27% |
| Cheumatopsyche | 58.36% |
| Hydropsychidae | 53.34% |
| Oligochaeta | 50.56% |
| Physa | 49.04% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2293 |
| Cold Water | 243 |
| Rapid Assessment | 188 |