Biochemical oxygen demand in rivers in Portugal
Portugal: Biochemical oxygen demand in rivers was 3.14 Milligrams per litre in 2023. ▬ Flat
Latest (2023)
3.14 Milligrams per litre
Change on year
up 0.6%
World rank
3rd
of 21 countries
All-time high
3.17 Milligrams per litre
in 2007
All-time low
2.94 Milligrams per litre
in 2012
Years of data
17
2007–2023
Biochemical oxygen demand in rivers in Portugal, 2007–2023
Source: Eurostat. Measured in Milligrams per litre.
Analysis
In 2023, biochemical oxygen demand in rivers in Portugal stood at 3.14 Milligrams per litre.
That represents a change of up 0.6% on the previous year and up 6.8% over ten years.
Over the whole period, biochemical oxygen demand in rivers in Portugal peaked at 3.17 Milligrams per litre in 2007 and was at its lowest, 2.94 Milligrams per litre, in 2012.
Portugal ranks 3rd of 21 countries on this measure, in the top 10%.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 3.1 Milligrams per litre | 3.03 Milligrams per litre | 3.17 Milligrams per litre | 3 |
| 2010s | 2.97 Milligrams per litre | 2.94 Milligrams per litre | 3.05 Milligrams per litre | 10 |
| 2020s | 3.11 Milligrams per litre | 3.08 Milligrams per litre | 3.14 Milligrams per litre | 4 |
Countries ranked near Portugal
More reference data data for Portugal
- Spring temperature anomalies 0.5537 °C (2026)
- Summer temperature anomalies 2.05 °C (2026)
- Temperature anomalies by month 0.3824 °C (2026)
- Universal right to vote in practice 2 (2025)
- Autumn temperature anomalies -0.3904 °C (2025)
- Winter temperature anomalies 0.0004 °C (2025)
- Consumer price index 132.05 2010 = 100 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 1 (2025)
- Men's universal right to vote 1 (2025)
Frequently asked questions
- What is biochemical oxygen demand in rivers in Portugal?
- Biochemical oxygen demand in rivers in Portugal was 3.14 Milligrams per litre in 2023, according to Eurostat.
- What is the highest biochemical oxygen demand in rivers recorded in Portugal?
- The highest recorded value was 3.17 Milligrams per litre in 2007.
- What is the lowest biochemical oxygen demand in rivers recorded in Portugal?
- The lowest recorded value was 2.94 Milligrams per litre in 2012.
- How does Portugal rank for biochemical oxygen demand in rivers?
- Portugal ranks 3rd out of 21 countries with data for 2023.
- Is biochemical oxygen demand in rivers rising or falling in Portugal?
- Over the last ten years it is up 6.8%. The long-run trend across the full record is flat.
- Where does this Portugal data come from?
- The figures come from Eurostat, published as part of Biochemical oxygen demand in rivers. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 17 observations, free to reuse under CC BY 4.0 (Eurostat).