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Riverfly Data

Riverfly Data

1Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 20

Count Distribution‡

Groups

Cased Caddis‡
Total: 125 | Average: 125

Caseless Caddis‡
Total: 40 | Average: 40

Mayfly (Ephemeridae)‡
Total: 28 | Average: 28

Blue-Winged Olive (Ephemerellidae)‡
Total: 194 | Average: 194

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 95 | Average: 95

Olives (Baetidae)‡
Total: 372 | Average: 372

Stoneflies (Plecoptera)‡
Total: 123 | Average: 123

Freshwater Shrimp‡
Total: 47 | Average: 47

†

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.