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Riverfly Data

Riverfly Data

4Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 14

Count Distribution‡

Groups

Cased Caddis‡
Total: 25 | Average: 6

Caseless Caddis‡
Total: 103 | Average: 26

Mayfly (Ephemeridae)‡
Total: 5 | Average: 1

Blue-Winged Olive (Ephemerellidae)‡
Total: 264 | Average: 66

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 342 | Average: 86

Olives (Baetidae)‡
Total: 3516 | Average: 879

Stoneflies (Plecoptera)‡
Total: 2 | Average: 1

Freshwater Shrimp‡
Total: 986 | Average: 247

†

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.