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Riverfly Data

Riverfly Data

134Total Samples Shown
0Trigger Level Breaches

Scores†
Average Score: 11

Count Distribution‡

Groups

Cased Caddis‡
Total: 106 | Average: 9

Caseless Caddis‡
Total: 47 | Average: 4

Mayfly (Ephemeridae)‡
Total: 98 | Average: 8

Blue-Winged Olive (Ephemerellidae)‡
Total: 33 | Average: 3

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 155 | Average: 13

Olives (Baetidae)‡
Total: 131 | Average: 11

Stoneflies (Plecoptera)‡
Total: 49 | Average: 4

Freshwater Shrimp‡
Total: 1463 | Average: 122

†

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.