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Riverfly Data

Riverfly Data

2Total Samples Shown
0Trigger Level Breaches

Scores With Trigger Level†
Average Score: 12

Count Distribution‡

Groups

Cased Caddis‡
Total: 7 | Average: 4

Caseless Caddis‡
Total: 118 | Average: 59

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

Blue-Winged Olive (Ephemerellidae)‡
Total: 313 | Average: 157

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 11 | Average: 6

Olives (Baetidae)‡
Total: 299 | Average: 150

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

Freshwater Shrimp‡
Total: 27 | Average: 14

†

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.