Water characteristics (e.g. temperature, pH, salinity, stratification, oxygen indices of pollution - dissolved oxygen (DO), chemical oxygen demand (COD), biochemical oxygen demand (BOD), nitrogen present in organic and mineral form, including ammonia, suspended matter, other nutrients and productivity).
Lastnosti vode (npr. temperatura, pH vrednost, slanost, stratifikacija, indeksi onesnaženosti glede na vsebnost kisika - raztopljeni kisik (DO), kemična poraba kisika (COD), biokemična poraba kisika (BOD), navzočnost dušika v organski in mineralni obliki, vključno z amoniakom, suspendirani delci, druge hranilne snovi in produktivnost).