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LakeQuality

Lakes in Spain

Find lakes in Spain: 109 designated lake bathing waters classified under the EU Bathing Water Directive. 87 are rated Excellent for 2025.

The same country also has official phosphorus, chlorophyll-a, and Secchi for 19 named lakes, sampled 2017–2025. Those are nutrient and clarity readings, a different measurement from the Directive's bacteria class.

Updated 2025

Excellent: 87Good: 11Sufficient: 3Poor: 4Not classified: 4

Lake map

Map shows 128 lakes with coordinates

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Best-rated lakes to swim in Spain

Officially classified Excellent for the 2025 bathing season, ranked by how often that class has held. Full best-lakes list →

  1. Embalse Aguilar de Campoo Aguilar de Campoo Pm1Excellent · Excellent 11/11 seasons
  2. Embalse Alcorlo Toba (La) Pm1Excellent · Excellent 11/11 seasons
  3. Embalse Alloz Gues?laz/Gesalatz Pm1Excellent · Excellent 11/11 seasons
  4. Embalse As Conchas Bande Pm1Excellent · Excellent 11/11 seasons
  5. Embalse As Conchas Mu??os Pm1Excellent · Excellent 11/11 seasons
  6. Embalse Banyoles Banyoles Pm2Excellent · Excellent 11/11 seasons
  7. Embalse Bermejales Arenas del Rey Pm1Excellent · Excellent 11/11 seasons
  8. Embalse Buendia Buend?a 02 Pm1Excellent · Excellent 11/11 seasons
  9. Embalse Buendia Buend?a Pm1Excellent · Excellent 11/11 seasons
  10. Embalse Cuerda del Pozo Cidones Pm1Excellent · Excellent 11/11 seasons
  11. Embalse Cuerda del Pozo Soria Pm1Excellent · Excellent 11/11 seasons
  12. Embalse Cuerda del Pozo Soria Pm2Excellent · Excellent 11/11 seasons
  13. Embalse Cuerda del Pozo Vinuesa Pm1Excellent · Excellent 11/11 seasons
  14. Embalse de Castrelo Castrelo de Mi?o Pm1Excellent · Excellent 11/11 seasons
  15. Embalse de Ruesga Cervera de Pisuerga Pm1Excellent · Excellent 11/11 seasons

Every rated bathing water in Spain

Places in Spain

Named lakes

LakePlaceTotal phosphorusChlorophyll-aSecchiYear
Embalse AixolaGipuzkoa35 µg/L0.40 µg/L5.5 m2025
Embalse AlbinaAraba/Álava12 µg/L0.50 µg/L1.9 m2025
Embalse BarrendiolaGipuzkoa10 µg/L1.1 µg/L3.2 m2025
Embalse de BéznarAndalucía—14 µg/L—2017
Embalse de ColomeraAndalucía20 µg/L1.7 µg/L—2017
Embalse de CubillasAndalucía38 µg/L14 µg/L—2017
Embalse de IznájarAndalucía—19 µg/L—2017
Embalse de la BoleraAndalucía—1.2 µg/L—2017
Embalse de RulesAndalucía—2.1 µg/L—2017
Embalse de San ClementeAndalucía—2.6 µg/L—2017
Embalse Del JándulaAndalucía14 µg/L1.5 µg/L—2017
Embalse Del NegratínAndalucía6.5 µg/L0.60 µg/L—2017
Embalse El PortilloAndalucía—1.3 µg/L—2017
Embalse Francisco AbellánAndalucía—1.6 µg/L—2017
Embalse IbiurGipuzkoa10 µg/L1.1 µg/L3.8 m2025
Embalse UllibarriAraba/Álava26 µg/L2.3 µg/L3.1 m2025
Embalse UrrunagaAraba/Álava35 µg/L0.30 µg/L3.4 m2025
Ibaieder EmbalseGipuzkoa16 µg/L1.4 µg/L4.6 m2025
Urkulu EmbalseGipuzkoa10 µg/L0.90 µg/L3.0 m2025

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Frequently asked questions

Which lakes in Spain are best to swim in?
87 of 109 designated bathing waters in Spain are rated Excellent for 2025 under the EU Bathing Water Directive. That class measures E. coli and intestinal enterococci only — it is not a safety clearance.
Is it safe to swim in Spain lakes?
The official class is a bacteriological rating, not a safety clearance. It does not cover algal blooms, nutrients, water clarity, currents, or depth. Conditions change after heavy rain. Check local signage and the operator's current notices before entering the water.
How is lake water quality measured in Spain?
19 named lakes in Spain have official phosphorus, chlorophyll-a, and Secchi from URA (the Basque Water Agency) and published Andalusian reservoir campaigns, 2017–2025. These are the authority's own measurements, shown as reported.
Whose ratings do the Spain lake pages show?
The publishing authority's own. Pages for lakes in Spain show the values and classes that authority reports, with the season or year each was taken.

Lakes in other countries

Lakes in Europe

Directory of official lake water quality

Lake campgrounds in Europe

Rated bathing waters at campgrounds

Best lakes in Spain

Excellent-rated bathing waters

Lakes in Lithuania

Water quality for lakes in Lithuania

Lakes in Belgium

Water quality for lakes in Belgium

Lakes in Czechia

Water quality for lakes in Czechia

Lakes in Portugal

Water quality for lakes in Portugal

Lakes in Slovakia

Water quality for lakes in Slovakia

Lakes in Croatia

Water quality for lakes in Croatia

Lakes in Estonia

Water quality for lakes in Estonia

Lakes in Luxembourg

Water quality for lakes in Luxembourg

Where to stay near Spain

Lakeside cabins, hotels, and vacation rentals near Spain — live availability from Booking.com, Vrbo and Expedia.

Top-rated places to stay near Spain

Prices for Sep 25–27, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

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Source: European Environment Agency (EEA), Bathing Water Directive. CC-BY 4.0.

Official surface phosphorus, chlorophyll-a, and/or Secchi. Published as the authority reports it on this scale.

Monitoring: URA (the Basque Water Agency) and published Andalusian reservoir campaigns.