Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,386,247
Total Invertebrates Collected
959
Unique Taxa
2,972
Total Surveys
2,784
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 265,201 |
| Cheumatopsyche | 133,094 |
| Tricorythodes | 42,185 |
| Baetis intercalaris | 42,117 |
| Hydropsychidae | 40,059 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 66.71% |
| Cheumatopsyche | 57.15% |
| Hydropsychidae | 52.21% |
| Oligochaeta | 49.65% |
| Physa | 48.17% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2382 |
| Cold Water | 254 |
| Rapid Assessment | 188 |