The map below locates the areas exposed to natural and technological hazards on the territory of the municipality of Mourèze. It is based on data from the Departmental Major Risks Dossier (DDRM) of Hérault and the applicable Risk Prevention Plan (PPR).
ℹ️ Reference document
This map is provided for information purposes. If you are unsure about your exposure to risks, contact the Mourèze town hall or consult the PPR available at the town hall and the Hérault prefecture.
Risk Zones by Type
🔥 FOREST FIRE — HIGH Risk
Area concerned: Entire municipal territory, particularly the wooded areas of the Cirque de Mourèze (Causse, garrigue).
Critical period: June to September — maximum vigilance during strong wind conditions (tramontane, marin).
☀️ HEATWAVE — MEDIUM Risk
Area concerned: Entire territory. Vulnerable populations in isolated housing and elderly persons particularly exposed.
Critical period: July–August. Activated from level 3 (heatwave alert) by Météo-France.
💧 FLOODING — MEDIUM Risk
Area concerned: Salagou watershed and its tributaries. Lower village area (Rats and Nougarède streams) and roads D8 / D908.
Trigger: Intense Mediterranean episodes (rainfall > 100 mm in 24 hours).
🌪️ STORM / STRONG WIND — MEDIUM Risk
Area concerned: Entire territory, increased exposure on Cirque ridges. Risk of fallen trees, power line ruptures.
Vigilance: From Météo-France orange level (wind > 100 km/h).
🚛 HAZARDOUS MATERIALS TRANSPORT — LOW Risk
Area concerned: Road axes D8 and D908 crossing the municipality. Risk related to tanker trucks and exceptional convoys.
Buffer zone: 300 m on either side of these axes in case of accident.
⛰️ GROUND MOVEMENT — MEDIUM Risk
Area concerned: Slopes of the Cirque de Mourèze (fragmented dolomite), north-east sector of the village. Risk of rockfalls and landslides.
Aggravation: After intense rainfall episodes or prolonged droughts.
☢️ RADON — LOW Risk
Area concerned: Granite and dolomitic subsoil of the entire territory. Risk mainly in enclosed spaces (cellars, basements).
Recommended action: Regular ventilation of basement rooms.
🌍 SEISMICITY — LOW Risk
Area concerned: Entire territory, in seismicity zone 2 (low) according to national regulatory zoning.
Regulation: Taken into account in earthquake-resistant construction rules (Eurocode 8).
Cartographic Resources
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Géorisques — National portal
Address-level risk consultation on georisques.gouv.fr — interactive map of natural and technological risks.
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DDRM of Hérault
Departmental Major Risks Dossier — available on the Hérault Prefecture website.
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Risk Prevention Plan (PPR)
Enforceable document available for consultation at Mourèze town hall during opening hours.
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Météo-France — Weather vigilance
Real-time vigilance map at meteofrance.com — Hérault department (34).
