Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,407,304
Total Invertebrates Collected
959
Unique Taxa
3,013
Total Surveys
2,825
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 269,281 |
| Cheumatopsyche | 135,972 |
| Baetis intercalaris | 43,486 |
| Tricorythodes | 42,554 |
| Hydropsychidae | 40,739 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 65.62% |
| Cheumatopsyche | 56.23% |
| Hydropsychidae | 51.39% |
| Oligochaeta | 48.93% |
| Physa | 47.42% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2419 |
| Cold Water | 257 |
| Rapid Assessment | 188 |