A fountain needs a site-specific weather response. Agree the protected areas, reduced-effect modes, stop conditions and authorised restart procedure with the designer; there is no universal wind-speed limit suitable for every fountain.
Start with what must stay outside the spray zone
Before asking how much wind a fountain can tolerate, mark the places that must remain protected: public paths, roads, seating, doors, electrical equipment and nearby properties. The same effect can behave differently when wind changes direction. A fountain inside a basin and a public dry-deck installation also have different exposure and water-recovery conditions.
Do not select a wind threshold from another project’s video. Jet size, height, orientation, screen stability and the site’s geometry all affect what the operating plan needs to protect.
Use operating footage to define the visual objective
The clip helps identify the effect groups a client likes. It does not measure wind conditions or establish a safe operating envelope. Ask which groups could be reduced or stopped while retaining a simpler display, and which require the complete show to stop.
Agree a response plan before commissioning
- Define the boundary: identify protected areas on the approved site plan.
- Identify the inputs: record the sensors, operator observations and alarms relevant to the installation.
- Describe each response: normal mode, reduced effects, stop and any necessary isolation or public-access action.
- Test the sequence: check that commands, alarms and operator instructions produce the agreed response.
- Document restart: specify who may restart and what must be checked after the condition clears.
The engineer must establish any numerical setpoints and delays for the actual equipment and site. A single anemometer reading does not replace a complete risk assessment or an operator’s response to an unsafe condition.
Rain is only one part of the weather question
Review drainage, flooding, lightning procedures, extreme temperature and visibility where relevant. A waterproof equipment rating does not by itself authorise operation in every storm. Follow the installation’s approved operating plan and local requirements; do not enter equipment areas or handle electrical components during an unsafe condition.
For water-screen projection, changing wind can also affect picture stability. Review the water-screen site planning guide separately rather than assuming the fountain’s normal mode is suitable for projection.
Copy this weather-event record
Date and time: Show or operating mode: Observed weather and affected viewing side: Sensor readings or alarm text, if available: Spray crossing the agreed boundary: Reduced mode or stop action taken: Person responsible: Checks completed before restart:
Record the event from a safe observation point. Repeated boundary crossings are a reason to review the operating envelope, not to disable protection settings.
What to ask the supplier for
Request the marked site plan, control cause-and-effect description, sensor locations, commissioning test record and operator instructions. Include weather-related operating requirements in the project brief and handover checklist.