Method

Key variable

Method

Unit

Systematic

monitoring

pH

40,500 H+-B-Electrometric method

--

Electrical conductivity

2510 B-Laboratory method

µmho∙cm−1

Turbidity

2130 B

NTU

Water Temperature

2550 B-Field and laboratory method

˚C

Water level

Limnimetric scale

m

Air temperature

--

˚C

Relative humidity

Vapor pressure-temperature relationship

% (Pa/Pa)

Precipitation

Volumetric

mm

Radiation

Net radiation

W

Episodic

Monitoring

(seasonal

campaigns)

Flow rate

Bathymetry and propeller; ADCP-Doppler

m3∙s−1

Dissolved Oxygen (DO)

4500 OG-Electrode with membrane

mgO2∙L−1

Chemical Oxygen Demand (COD)

5220 D-Colorimetric closed reflection method

mgO2∙L−1

Biochemical Oxygen Demand (BOD)

5210 B-BOD test 5 days

mgO2∙L−1

Total Dissolved Solids (TDS)

2540 C-Porcelain capsule

mg∙L−1

Total Suspended Solids (TSS)

2540 D-Membrane

mg∙L−1

Total Nitrogen

4500 NB-Macro Kjeldahl

mg∙L−1

Nitrate (NO3)

4500 NO3-B-Spectrophotometric method

mg∙L−1

Nitrite (NO2)

4500 NO2-B-Colorimetric method

mg∙L−1

Nitrogen Ammonia (NH3)

4500 NH3-C Titration method

mg∙L−1

Total phosphorus

4500 P-E-Ascorbic acid

mg∙L−1

Escherichia coli

9223 B-Enzyme-substrate test

CFU/100 mL−1