Transect & Bathymetric map
Water treatment plants
Sampling programme & Analytical methods
Water quality status
At present water quality in terms of nutrient
and chlorophyll a concen-trations and secchi depth is monitored
at 9 stations (8 reported here) in the bay, at a frequency of once per
month during winter, every week during the spring bloom, and every second
week during the rest of the year. Nutrient concentrations
are monitored in 3 streams entering the bay as well as in freshwater discharged
from Mälaren via Södertälje.
Instructions for use: click at the station
symbol on the map and make your choice in the menu you are presented.