Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,364,899
Total Invertebrates Collected
956
Unique Taxa
2,942
Total Surveys
2,754
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 262,284 |
| Cheumatopsyche | 131,219 |
| Baetis intercalaris | 41,781 |
| Tricorythodes | 41,610 |
| Hydropsychidae | 39,113 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 68.22% |
| Cheumatopsyche | 58.44% |
| Hydropsychidae | 53.38% |
| Oligochaeta | 50.69% |
| Physa | 49.18% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2359 |
| Cold Water | 248 |
| Rapid Assessment | 188 |