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Riverfly Data

Riverfly Data

5Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 14

Count Distribution‡

Groups

Cased Caddis‡
Total: 21 | Average: 4

Caseless Caddis‡
Total: 129 | Average: 26

Mayfly (Ephemeridae)‡
Total: 9 | Average: 2

Blue-Winged Olive (Ephemerellidae)‡
Total: 1026 | Average: 205

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 356 | Average: 71

Olives (Baetidae)‡
Total: 3532 | Average: 706

Stoneflies (Plecoptera)‡
Total: 2 | Average: 0

Freshwater Shrimp‡
Total: 1843 | Average: 369

†

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.