Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,424,409
Total Invertebrates Collected
961
Unique Taxa
3,041
Total Surveys
2,853
BMIBI Assessments
Top 5 Most Collected Taxa
| Taxa | # Collected |
|---|---|
| Chironomidae | 271,876 |
| Cheumatopsyche | 138,245 |
| Baetis intercalaris | 44,031 |
| Tricorythodes | 42,935 |
| Hydropsychidae | 41,518 |
Top 5 Most Common Taxa
| Taxa | % of all sites |
|---|---|
| Chironomidae | 64.67% |
| Cheumatopsyche | 55.47% |
| Hydropsychidae | 50.71% |
| Oligochaeta | 48.3% |
| Physa | 46.88% |
Valid Assessments
| Assessment Type | Count |
|---|---|
| Warm Water | 2446 |
| Cold Water | 258 |
| Rapid Assessment | 188 |