Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,304,296
Total Invertebrates Collected
957
Unique Taxa
2,852
Total Surveys
2,664
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 252,730 |
| Cheumatopsyche | 124,537 |
| Baetis intercalaris | 40,077 |
| Tricorythodes | 39,837 |
| Hydropsychidae | 37,430 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 68.21% |
| Cheumatopsyche | 58.29% |
| Hydropsychidae | 53.21% |
| Oligochaeta | 50.56% |
| Physa | 48.98% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2273 |
| Cold Water | 242 |
| Rapid Assessment | 188 |