Chalk streams
Chalk streams are globally rare and unique rivers, with the vast majority found in southern and eastern England.
Chalk streams are fed by pure, filtered groundwater from chalk aquifers. Their stable flow, cool, clear, mineral-rich water, and clean gravel beds create an exceptionally productive and specialized habitat for a diverse range of wildlife, including wild trout and water voles.
Associated species
12 species recorded from Greater Lincolnshire in the last 25 years 13 recorded from Greater Lincolnshire all time
| common name | scientific name | occurrences | earliest | latest | |||
|---|---|---|---|---|---|---|---|
| White-clawed Crayfish | Austropotamobius pallipes (Lereboullet, 1858) |
1,116 | 1900 | 2024 |
|
| common name | scientific name | occurrences | earliest | latest | |||
|---|---|---|---|---|---|---|---|
| Dark-winged Soldier | Oxycera analis Wiedemann in Meigen, 1822 |
2 | 2011 | 2011 |
|