Invertebrate Program Statistics and Summary
Since the bioassessment program began in 1994, benthic macroinvertebrate surveys have been a critical component of the assessment process.
1,272,414
Total Invertebrates Collected
956
Unique Taxa
2,793
Total Surveys
2,605
BMIBI Assessments
Top 5 Most Collected Taxa
Taxa | # Collected |
---|---|
Chironomidae | 246,205 |
Cheumatopsyche | 120,729 |
Tricorythodes | 38,973 |
Baetis intercalaris | 38,870 |
Hydropsychidae | 36,891 |
Top 5 Most Common Taxa
Taxa | % of all sites |
---|---|
Chironomidae | 73.86% |
Cheumatopsyche | 63.03% |
Hydropsychidae | 57.55% |
Oligochaeta | 54.66% |
Physa | 52.78% |
Valid Assessments
Assessment Type | Count |
---|---|
Warm Water | 2222 |
Cold Water | 234 |
Rapid Assessment | 188 |