Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,319,299
Total Invertebrates Collected
959
Unique Taxa
2,879
Total Surveys
2,691
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 255,060 |
| Cheumatopsyche | 126,512 |
| Baetis intercalaris | 40,780 |
| Tricorythodes | 40,587 |
| Hydropsychidae | 37,710 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 68.23% |
| Cheumatopsyche | 58.32% |
| Hydropsychidae | 53.3% |
| Oligochaeta | 50.53% |
| Physa | 49.01% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2296 |
| Cold Water | 244 |
| Rapid Assessment | 188 |