A303 Bridge – 2017
These results are taken from kick sampling conducted beneath the bridge where the A303 Wincanton Bypass crosses the river Cale; UK grid reference ST71100 27786.
| Date | January | February | March | April | ||||
| Target Groups | Number | Category | Number | Category | Number | Category | Number | Category |
| Cased caddis | a | 3 | a | |||||
| Caseless caddis | a | 2 | a | |||||
| Mayflies | a | |||||||
| Blue-winged olives | a | 5 | a | |||||
| Flat-bodies | ||||||||
| Olives | a | 20 | b | |||||
| Stoneflies | a | 1 | a | |||||
| Freshwater shrimp | b | 17 | b | |||||
| Site score | 8 | 8 | ||||||
| Notes | ||||||||
| Invasive Species | ||||||||
| American signal crayfish | NO | YES | NO | NO | ||||
| Himalayan balsam | NO | NO | NO | NO | ||||
| Japanese knotweed | NO | NO | NO | NO | ||||
| Giant hogweed | NO | NO | NO | NO | ||||
| Floating pennywort | NO | NO | NO | NO | ||||
| American skunk cabbage | NO | NO | NO | NO | ||||
| Other species noted | Bullhead, leeches, limpets | Bullhead, water snails, limpets | ||||||
| River depth close | cm | 10cm | cm | cm | ||||
| River depth middle | cm | 15cm | cm | cm | ||||
| River depth far | cm | 15cm | cm | cm | ||||