The Mole passes Horley to the west, flowing north towards Sidlow and entering a largely rural area. south of Sidlow the mean flow is measured as at Kinnersley Manor gauging station ( above OD). The Earlswood Brook, a tributary draining the urban area of Reigate and Redhill, joins the Mole at Sidlow. The largest STW in the Mole catchment (Reigate STW) discharges up to per day into the Earlswood Brook.A principal tributary of the Earlswood Brook is the Redhill Brook, which includes The Moors wetland nature reserve within its catchment area.
The Mole passes Horley to the west flowing north towards Sidlow and entering a largely rural area south of Sidlow the mean flow is measured as at Kinnersley Manor gauging station ( above OD) The Earlswood Brook a tributary draining the urban area of Reigate and Redhill joins the Mole at Sidlow The largest STW in the Mole catchment (Reigate STW) discharges up to per day into the Earlswood BrookA principal tributary of the Earlswood Brook is the Redhill Brook which includes The Moors wetland nature reserve within its catchment area