Riverfly and FBA logos

Riverfly Data

Riverfly Data

11878Total Samples Shown
107Trigger Level Breaches

Scores†
Average Score: 14

Count Distribution‡

Groups

Cased Caddis‡
Total: 340 | Average: 26

Caseless Caddis‡
Total: 112 | Average: 9

Mayfly (Ephemeridae)‡
Total: 114 | Average: 9

Blue-Winged Olive (Ephemerellidae)‡
Total: 120 | Average: 9

Flat-Bodied Stone Clinger (Heptageniidae)‡
Total: 134 | Average: 10

Olives (Baetidae)‡
Total: 559 | Average: 43

Stoneflies (Plecoptera)‡
Total: 65 | Average: 5

Freshwater Shrimp‡
Total: 2008 | Average: 154

†

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.