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Integrated Lake and Catchment Phosphorus Model ‐A Eutrophication Management Tool. II: Application to Rutland Water
Author(s) -
Daldorph P. W. G.,
Spraggs G. E.,
Lees M. J.,
Wheater H. S.,
Chapra S. C.
Publication year - 2001
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2001.tb00330.x
Subject(s) - eutrophication , phosphorus , environmental science , hydrology (agriculture) , drainage basin , sedimentation , water quality , water framework directive , catchment area , environmental engineering , nutrient , geology , sediment , ecology , chemistry , geography , paleontology , geotechnical engineering , cartography , organic chemistry , biology
An integrated lake and catchment model was used to simulate reservoir volume and phosphorus concentrations in Rutland Water over a period of seventeen years, taking into account changes in reservoir output and phosphorus sedimentation resulting from the addition of ferric sulphate. Application of the model for critical‐period analysis and the setting of environmental targets and trigger values are discussed, and an example is given showing the impact of changing reservoir output on the frequency distribution of phosphorus using an eighty‐year set of river‐discharge data. The impact of phosphorus removal at point sources in the catchment on phosphorus concentrations in the river and reservoir is simulated and compared to results from SIMCAT ‐ a steady‐state model which was developed by the Environment Agency. Results are also compared with observed data following the implementation of the EC urban waste water treatment Directive, at the end of 1998.