Barranco De La Foz De Benasa Navascu?S/Nabaskoze Pm1

Spain River 1 - Excellent

Barranco de la Foz de Benasa is a river pool located in a rocky gorge within the Natural Reserve of the Foz de Benasa in Navascués, Navarra, Spain. The bathing area is a natural pool fed by a stream with a single, straight channel containing large boulders and rocky substrate made of limestone. The site functions as a fire-prevention reservoir with artificial modifications including concrete barriers and a dam structure dividing it into two zones of different depths. The bathing zone is surrounded by mixed Mediterranean and Pyrenean vegetation and is situated at an altitude of 591 metres.

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Water

Mountain stream (barranco) within the Salazar sub-basin of the Ebro River Basin. The water body is a natural river pool in an artificial reservoir with a rocky channel containing large boulders and gravel. The bed consists of sand, gravel, and algae. The watercourse is classified as a wet calcareous mountain river according to hydrological planning instructions.

Location

Located in Navascués, Navarra, Spain. Access from Navascués via the NA-178 road; between kilometres 21 and 22, turn left onto an asphalt track that becomes a dirt road. Parking is available at the site; visitors walk from the car park to the bathing zone.

Facilities

Parking available. Rescue posts present. Information signs. Picnic areas. Waste bins. Waste containers. Garbage collection twice weekly. Pool draining twice weekly. No bar or restaurant. No toilets. No showers. No boat launch. Domestic animal access not specified.

Season

Normally from mid-July to early September. The official bathing season calendar is established annually by the autonomous community.

Water Quality

Water quality classification: Excellent (annual classification for the last 3 years). Monitoring data from 2013–2018 shows microbiological counts frequently below the detection limit of 10 UFC/100 mL for both Escherichia coli and intestinal enterococci. The water mass status is Good or better. Low risk of short-duration contamination, with the main concern being reduced river flow during summer months, which can raise water temperature and promote algal growth, though this has not resulted in negative consequences.

Risks

Risk of short-duration contamination from user self-contamination when bather numbers are high on weekends. Accidental or illegal discharges near the bathing zone. Dead animals appearing in the water. Organic waste from heavy rainfall or high bather numbers. Sediment remobilisation from heavy rainfall. Organic waste from strong winds. Reduced river discharge during summer months may increase water temperature and algal blooms. Risk level is considered low overall.