Headwater stream water chemistry data 1998 [Countryside Survey] - Furse, M.T.; Davy-Bowker, J.; Dawson, F.H.; Gunn, R.J.M.; Blackburn, J.H.; Gunn, I.M.; Winder, J.M.; Scarlett, P.M.; Gravelle, M.; Kneebone, N.; Nesbitt, I.; Amarillo, M.; et al. (NERC Environmental Information Data Centre, 2016)