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Riverfly Data

Riverfly Data

5Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 17

Count Distribution‡

Groups

Cased Caddis‡
Total: 980 | Average: 196

Caseless Caddis‡
Total: 219 | Average: 44

Mayfly (Ephemeridae)‡
Total: 164 | Average: 33

Blue-Winged Olive (Ephemerellidae)‡
Total: 215 | Average: 43

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 1448 | Average: 290

Olives (Baetidae)‡
Total: 1639 | Average: 328

Stoneflies (Plecoptera)‡
Total: 818 | Average: 164

Freshwater Shrimp‡
Total: 98 | Average: 20

†

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.