Physical parameters

• Stream cross-section profile
• Stream flow rate
• Water temperature
• Turbidity
• Stream bed composition

Chemical parameters

• Dissolved Oxygen
• pH
• Nitrates (N0₃ -N)
• Phosphates (dissolved reactive phosphate PO₄^-3)
• Dissolved iron
• Conductivity
• Hardness (total)

Biological parameters

• Macroinvertebrates
• Fish
• Microinvertebrates (bacteria)
• Cultural health index
• Habitat survey

The Waterwatch Teachers’ Guide (PDF 1 MB) explains these parameters and their relevance to the health of waterways.