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Riverfly Data

Riverfly Data

3Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 18

Count Distribution‡

Groups

Cased Caddis‡
Total: 342 | Average: 114

Caseless Caddis‡
Total: 117 | Average: 39

Mayfly (Ephemeridae)‡
Total: 72 | Average: 24

Blue-Winged Olive (Ephemerellidae)‡
Total: 268 | Average: 89

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 1113 | Average: 371

Olives (Baetidae)‡
Total: 891 | Average: 297

Stoneflies (Plecoptera)‡
Total: 670 | Average: 223

Freshwater Shrimp‡
Total: 45 | Average: 15

†

Scores in this chart are calculated from the average monthly counts for each species group. The chart includes data derived from Urban and Extended Riverfly samples. Select a site using the map or menu bar to plot its trigger level alongside the scores.

‡

Values in this chart represent average monthly counts for each species group. The chart includes data derived from Urban and Extended Riverfly samples.