http://vocab.lternet.edu/vocab/vocab/http://vocab.lternet.edu/vocab/vocab/skos/606turbidity http://vocab.lternet.edu/vocab/vocab/skos/606 secchi depth RT http://vocab.lternet.edu/vocab/vocab/skos/606 seston RT http://vocab.lternet.edu/vocab/vocab/skos/606 water quality RT http://vocab.lternet.edu/vocab/vocab/skos/606 water properties BT