Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,353,805
Total Invertebrates Collected
958
Unique Taxa
2,942
Total Surveys
2,754
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 261,144 |
| Cheumatopsyche | 130,280 |
| Baetis intercalaris | 41,772 |
| Tricorythodes | 41,414 |
| Hydropsychidae | 39,036 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 68.27% |
| Cheumatopsyche | 58.48% |
| Hydropsychidae | 53.42% |
| Oligochaeta | 50.72% |
| Physa | 49.21% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2355 |
| Cold Water | 248 |
| Rapid Assessment | 188 |