Rio Tera Milles De La Polvorosa Pm1

Spain River 3 - Sufficient

The Río Tera bathing area is located at Milles de la Polvorosa in Zamora province, Castilla-León, Spain. It is situated on a section of the Tera River characterised by a single, meandering channel with a fluvial sedimentary substrate composed of gravel, sand, and clay. The bathing zone has a sandy and gravelly beach with riparian vegetation including alders, willows, and ash trees. The river supports diverse fauna including river crayfish, perch, pike, barbel, and eels.

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Water

The Tera River is a natural river in the Duero river basin. The bathing area drainage basin has a surface area of 54 square kilometres with a perimeter of 61 kilometres and altitude ranging from 688 to 924 metres. Environmental flow rate is 4.50 cubic metres per second, mean flow rate is 19.17 cubic metres per second, and the four-year return period flow rate is 417 cubic metres per second. The river bed consists of rolled stones.

Location

Milles de la Polvorosa, Zamora province, Spain. Access via the A-6 highway at Benavente, then the N-525 towards Santa Cristina de la Polvorosa, followed by the ZA-P-2544 to Milles de la Polvorosa, and then Carretera street for 1.6 kilometres to the Tera River. Parking is available.

Facilities

Parking, informational signs, bar/snack bar, picnic areas, waste bins, toilets, recreational zone, domestic animal access permitted. No lifeguards, no shower facilities, no dock, no swimming pools, no fountains.

Season

15 June to 15 September

Water Quality

Water quality classification: Insufficient in 2018 and 2019. Monitoring results show Escherichia coli and intestinal enterococci concentrations. Health risk from contamination occurs at flows below 0.91 cubic metres per second with enterococci concentrations exceeding 1000 UFC/100 ml. Identified pollution sources include sewage from Burganes de Valverde (3.73 kilometres away, 800 equivalent inhabitants), livestock farming, agricultural runoff, and bather self-contamination.

Risks

Fecal microbial contamination from various sources. Livestock farming (830 cattle, 11,046 sheep, 10 horses, 2,094 pigs, 246 birds, 30 rabbit breeding females) with contaminant runoff. Agricultural runoff from irrigated herbaceous crops covering 61.23 percent of the influence area. Accidental or illegal discharges, dead animals, organic waste, sediment resuspension, and abnormally reduced river flow.