Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,364,899
Total Invertebrates Collected
956
Unique Taxa
2,942
Total Surveys
2,754
BMIBI Assessments
Top 5 Most Collected Taxa
Taxa | # Collected |
---|---|
Chironomidae | 262,284 |
Cheumatopsyche | 131,219 |
Baetis intercalaris | 41,781 |
Tricorythodes | 41,610 |
Hydropsychidae | 39,113 |
Top 5 Most Common Taxa
Taxa | % of all sites |
---|---|
Chironomidae | 68.22% |
Cheumatopsyche | 58.44% |
Hydropsychidae | 53.38% |
Oligochaeta | 50.69% |
Physa | 49.18% |
Valid Assessments
Assessment Type | Count |
---|---|
Warm Water | 2359 |
Cold Water | 248 |
Rapid Assessment | 188 |