Riverfly and FBA logos

Riverfly Data

Riverfly Data

123Total Samples Shown
0Trigger Level Breaches

Scores†
Average Score: 12

Count Distribution‡

Groups

Cased Caddis‡
Total: 109 | Average: 8

Caseless Caddis‡
Total: 47 | Average: 4

Mayfly (Ephemeridae)‡
Total: 121 | Average: 9

Blue-Winged Olive (Ephemerellidae)‡
Total: 54 | Average: 4

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 201 | Average: 15

Olives (Baetidae)‡
Total: 164 | Average: 13

Stoneflies (Plecoptera)‡
Total: 59 | Average: 5

Freshwater Shrimp‡
Total: 1421 | Average: 109

†

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.