(1) Chlorophyll - summer (May - September) mean 1976-1982 (RWS)
(2) River water % - mean 1976-1982 (RWS)
(3) Suspended matter - mean summer (May - September) 1976-1982.
Virtually no storms. (RWS)
(4) Suspended matter - mean winter (October - April) 1976 - 1982.
95% of annual storms. (RWS)
Notes
Figures (1)-(4) supplied by RWS and refer to the top 5m of water. The -20m NAP
(Nieuw Amsterdam Peil or AOD [Amsterdam Ordnance Datum]) is shown in figures
(2)-(4).