Rio Anna Anna Pm1

Spain River 4 - Poor

Gorgo de la Escalera is a natural bathing area located in the Anna river in the municipality of Anna, Valencia, Spain. The site is situated in the headwaters of the Júcar river basin at an altitude of 155 meters. The bathing area features access stairs and is managed seasonally. The river flows over a rocky substrate composed of carbonated rocks, primarily limestone and carbonated sandstones, with a riverbed of gravel, pebbles, and blocks.

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Water

River in Mediterranean low mountain mineralized water category. Bed composed of gravel, pebbles, and blocks. Mean annual water flow is 1.047,71 m³/h with summer flow of 887,36 m³/h. Environmental flow is 0.023 m³/s. Water volume renewal time is 1.46 hours annually and 1.72 hours during summer. Four-year return period flow is 2 m³/s. The area is contained behind a weir structure.

Location

Anna, Comunidad Valenciana, Spain. Access via CV-580 road towards Navarres/Chella at kilometer 2, before entering Anna, taking the right turn marked 'Gorgo de la Escalera'. Parking available.

Facilities

Parking available. Information signage present. Trash bins and containers available. Garbage collection in place. No lifeguards. No toilets. No showers. No emergency rescue posts. No bar or snacks. No recreational facilities. No water sources. Domestic animals permitted.

Season

July and August

Water Quality

Water quality classification data available through official national monitoring portal (http://nayadeciudadano.sanidad.gob.es/). Identified contamination sources include wastewater from Enguera (5.5 km away), a football school and restaurant (3.5 km away), user self-contamination, livestock farming (533 sheep, 204 goats in the catchment), diffuse runoff from agriculture, and potential accidental/illegal discharges. Microbial contamination risk from multiple sources during heavy rainfall or low flow periods.

Risks

Short-duration contamination risk from: runoff from livestock facilities during heavy rain or manure storage failures; agricultural runoff from fertilized fields; self-contamination when bather numbers are high; accidental or illegal discharges near the site; dead animals; sediment remobilization during heavy rain or high bather numbers; organic waste during high bather numbers; abnormally reduced river flow exacerbating other contamination sources.