 Nyorai kupfuurira kweiyi ndima - Pedyo nomuromo weSevern Estuary pane imwe nzvimbo yeEnvironment Agency uye yakabhadharwa neAvon Wildlife Trust kune Blakes Pools iyo yakacherwa pakati pa1983 na1987 kukwezva mhuka dzomusango. Inoumba chikamu cheSevern Estuary Site yeSpecial Scientific Interest, Special Protection Area uye Ramsar nzvimbo. 