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Riverfly Data

Riverfly Data

20Total Samples Shown
0Trigger Level Breaches

Scores†
Average Score: 9

Count Distribution‡

Groups

Cased Caddis‡
Total: 50 | Average: 6

Caseless Caddis‡
Total: 20 | Average: 2

Mayfly (Ephemeridae)‡
Total: 11 | Average: 1

Blue-Winged Olive (Ephemerellidae)‡
Total: 105 | Average: 13

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 82 | Average: 10

Olives (Baetidae)‡
Total: 141 | Average: 18

Stoneflies (Plecoptera)‡
Total: 72 | Average: 9

Freshwater Shrimp‡
Total: 25 | Average: 3

†

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.