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Riverfly Data

Riverfly Data

4Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 18

Count Distribution‡

Groups

Cased Caddis‡
Total: 603 | Average: 151

Caseless Caddis‡
Total: 181 | Average: 45

Mayfly (Ephemeridae)‡
Total: 124 | Average: 31

Blue-Winged Olive (Ephemerellidae)‡
Total: 273 | Average: 68

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 1145 | Average: 286

Olives (Baetidae)‡
Total: 1331 | Average: 333

Stoneflies (Plecoptera)‡
Total: 730 | Average: 183

Freshwater Shrimp‡
Total: 81 | 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.