SGS-Witnessed
Performance Testing
The WDS-35T barrier underwent independent SGS-witnessed testing to BS 851188-2:2019+A1:2021, with a satisfactory result reported by WDS.
Explore the test documentation ↗COASTAL LIVING. BETTER PREPARED.
King tide flood barriers.
Protect what matters.
Help protect the investment inside your coastal home. Water Defense Systems barriers help reduce floodwater entry through designated doors and garages, as part of a broader plan for your interiors and belongings. Supplied locally by Poseidon AquaShield, your Southern California dealer.
Southern California dealer for WATER DEFENSE SYSTEMS
WDS installation · South FloridaReady when you need it.Deploy. Protect. Remove. Reuse.
WATER DEFENSE SYSTEMS
Tested performance.
American precision.
SGS-Witnessed
Precision-Cut
in the USA
WDS panels are cut to your opening dimensions in North Miami, Florida. Supplied in Southern California by Poseidon AquaShield.
Meet Water Defense Systems ↗26 inStandard three-panel configuration*
~10 minTypical deployment per opening*
Made to fitDoors, garages & wider openings
ReusableRinse, dry & store after use
KING TIDE FLOOD BARRIERS
Prepare before water
reaches the threshold.
For Newport Beach, Balboa Island, Balboa Peninsula and Southern California coastal communities.
King tides can bring rising water to low-lying streets and waterfront properties, even without a rainstorm. A fitted barrier helps resist water entering through a protected door, garage or patio opening when correctly installed and deployed.
Poseidon AquaShield brings Water Defense Systems’ removable panel system to Southern California, with property-specific planning for the openings you want to protect.
Newport Beach flood preparedness resources ↗Follow local tide forecasts and city alerts. Florida tide dates and installation schedules do not apply to Southern California.
AN INVESTMENT IN WHAT YOU VALUE
Your home holds more
than square footage.
Plan ahead for the interiors, belongings
and memories you want to protect.
A flood barrier is an investment in reducing risk to what is inside. Protecting a vulnerable opening can be one practical step toward safeguarding the spaces you have built and the possessions you treasure.
Preserve your investment
Consider the flooring, custom cabinetry, finishes and appliances behind each exposed door or garage. Include these assets when prioritizing your flood protection plan.
Think beyond replacement cost
Furniture, artwork, family photographs and keepsakes all deserve a plan. Move irreplaceable items to a safer elevated location before flooding; do not rely on a barrier alone.
Prepare for less disruption
Reducing water entry at protected openings is one part of planning for cleanup, repairs and interruptions to home or business life. Results depend on the whole property and the flood conditions.
Protection starts with a clear scope. Barriers help resist water at designated openings within their design limits. Other walls, foundations, drains and unprotected openings require separate assessment. Some leakage may occur; no whole-property protection or avoided-loss amount is guaranteed. Read the protection scope
FLOOD PROTECTION FOR EVERY OPENING
Your home. Your building.
Your protection plan.
Low-profile side channels stay in place.
Panels come out only when water threatens.
01 / RESIDENTIAL
Front & side doors
Custom-fit protection for entry doors and other smaller openings. Standard door options cover openings up to 4 feet wide.
02 / GARAGES
Single & double garages
Protect openings up to 9 feet wide or 18 feet wide, with a center post where required. Confirm the threshold and mounting conditions before fabrication.
03 / PATIOS & PASSAGEWAYS
French & sliding doors
Made-to-measure panels for wider backyard doors, patios and other openings exposed to rising water.
Manufacturer installation photography from South Florida. These are WDS examples, not completed Poseidon projects in California.
FOR BUILDINGS & PROPERTY MANAGERS
Plan for the openings
your building relies on.
Explore protection for parking garage entrances, loading docks, elevator lobbies, service entrances and utility rooms. We work through your opening list to identify suitable configurations.
- Condominiums, HOAs & apartment communities
- Commercial properties & waterfront businesses
- Numbered panels for repeatable staff deployment
- Custom spans and center-post configurations
Egress doors, accessibility and life-safety requirements must be reviewed before selecting or deploying any barrier.
Build an opening list ↗SIMPLE TO DEPLOY. DESIGNED TO REUSE.
Protection that fits
your routine.
Assess & measure
Review the openings, mounting surfaces, floor flatness and other potential water-entry paths. Confirm dimensions before fabrication.
Fit & install
WDS panels are cut to size in North Miami. Permanent side channels are installed at the selected openings, with site preparation as needed.
Deploy before the tide
Slide numbered panels into the channels and tighten the two-clamp system using the supplied tools. WDS describes typical deployment as about 10 minutes.
Rinse & store
Once conditions are safe, remove the panels, rinse with fresh water, dry thoroughly and store indoors. Inspect seals regularly.
PLAN YOUR PROJECT
Start with the openings.
Request a personalized estimate.
Each project is assessed individually.
Front doors and smaller openings
Garages and wider patio openings
Explore the garage barrier →Center-post configurations
Your written proposal will confirm the materials, installation and any necessary reinforcement, structural support, threshold preparation or additional waterproofing based on actual site conditions.
TECHNICAL DOCUMENTATION
Product specifications & engineering drawings
Download the Poseidon AquaShield dealer edition of the WDS-35T specification sheet. This six-page PDF includes component dimensions, panel and post details, installation notes and a witnessed performance test summary.
Download Spec Sheet (PDF · 6 pages) ↗
Poseidon AquaShield branding and contact information. Original engineering drawings: WDS Engineering. The test summary describes the tested configuration; project-specific engineering and site review remain necessary.
QUESTIONS, ANSWERED
Know what you’re
protecting.
Local planning and installation questions.
See product specifications and product FAQ →
Can it protect my garage, front door and patio doors?
Yes, subject to site suitability. Standard options include doors up to 4 feet, single garages up to 9 feet and double garages up to 18 feet with a center post. French doors, sliders and custom openings can be assessed individually.
Do I need to be home when a king tide arrives?
Someone must deploy the panels before water reaches the opening. This is a manual system, with no motor or charging required. Plan ahead and arrange a trained person to deploy it if you are away. Keep required exits usable.
Who installs the system in Southern California?
Poseidon AquaShield System is the Southern California dealer for Water Defense Systems. Local site assessment, installation arrangements, preparation and workmanship coverage are set out in your written project proposal. WDS fabricates panels to size in North Miami.
Does my floor need to be flat?
Yes. The bottom seal needs an appropriate flat, sound sealing surface. Pavers, joints or uneven concrete may need preparation or a flat concrete strip. This should be resolved before installation.
Do sandbags work against king tide flooding?
Sandbags can help redirect or slow water, but they require placement and may leak. A reusable aluminum barrier uses compression seals at a prepared opening. It also needs correct installation and deployment, and some leakage remains possible.
Can building staff deploy the barriers?
Yes, after training. Numbered panels support repeatable deployment by homeowners or building staff. Follow the manufacturer instructions, retain the required tools and practice installation before an event.
How much does it cost?
Contact Poseidon AquaShield for a project-specific estimate. Send photos and the clear width of each opening through our Sample Estimation process. We will review the dimensions, site conditions and installation requirements, then provide a written proposal covering materials, installation and any necessary preparation or additional work.
Will a barrier guarantee that my home stays dry?
No. It is designed to resist water through the protected opening when properly installed and deployed. Water can enter through walls, stucco drainage details, foundations, floor drains, plumbing backflow or ground seepage. Installing the system does not make the entire property completely waterproof or floodproof. It does not guarantee protection against water entering through other parts of the property or the resulting damage. Some leakage at protected openings may also occur, and additional reinforcement or waterproofing may be needed.
Does a door barrier replace a seawall?
No. An opening barrier protects the designated doorway or garage entrance. Seawalls, drainage, backflow protection and other flood-risk measures serve different purposes and may also be needed.
When are the next king tides in Newport Beach?
Check current Newport Beach advisories and local tide forecasts before each event. Do not use the South Florida dates shown on the manufacturer website as a Southern California forecast.
Can you protect elevator lobbies, parking garages or fire exits?
These are manufacturer-listed applications. Each opening requires site-specific review. Any egress or fire-exit application must preserve required life-safety and accessibility functions and receive applicable review.
Do you work with HOAs and property managers?
The system can be planned for residential communities and commercial properties. Start with an opening list, dimensions and site photos so the appropriate scope and configurations can be evaluated.
How can flood barriers help protect the assets inside my home?
By helping reduce floodwater entering through designated doors and garages, a properly installed and deployed barrier can help reduce exposure of flooring, cabinetry, furniture, appliances and stored belongings. It is one part of a property protection plan, not a guarantee against damage. Move irreplaceable items to a safer elevated location before flooding.
Do you serve Newport Beach, Balboa Island and Balboa Peninsula?
Yes. Poseidon AquaShield System is the Southern California dealer for Water Defense Systems, serving Newport Beach, Balboa Island, Balboa Peninsula, Orange County and Southern California. Contact (626) 722-8852 or poseidonaquashield@gmail.com to discuss site suitability and your installation scope.
FOR COASTAL HOMEOWNERS & REAL ESTATE PROFESSIONALS
Think ahead.
Prepare for the next owner.
Flood preparedness may become an increasingly important consideration for buyers of coastal homes.
When preparing a waterfront or low-lying property for sale, consider whether removable flood barriers belong in its broader protection plan. A fitted system, clear operating instructions and documented maintenance can help explain how designated doors and garage openings are protected.
We believe opening protection could become a more commonly expected feature of coastal homes over time. Poseidon AquaShield helps homeowners and real estate professionals evaluate suitable openings and understand the system’s scope before making it part of a property’s preparation for sale.
This is a forward-looking perspective, not a statement that installation is currently required or will become mandatory. It does not establish code compliance, guarantee a sale or increased property value, or replace flood-risk disclosures, insurance or whole-property assessment.
Discuss a coastal property ↗FLOOD PROTECTION · SCOPE & DISCLAIMER
Protect the opening.
Understand the whole property.
The WDS barrier system is designed to help minimize the risk of floodwater entering through the specific doors, garages and other openings where it is properly installed and deployed, within its design limits. Installing this system does not make the entire house or building completely waterproof or floodproof, and does not guarantee that the property will remain dry or free from flood damage.
Water may still enter through other parts of the property, including walls, stucco drainage details, foundations, ground seepage, floor drains, plumbing backflow and unprotected openings. The system does not guarantee protection against water intrusion through these other areas or the resulting damage. Some leakage at protected openings may also occur. Proper installation, timely deployment and regular maintenance are essential. Additional reinforcement or waterproofing may be needed based on site conditions. A barrier is not a substitute for flood insurance, evacuation guidance or an overall flood-risk assessment.
YOUR SOUTHERN CALIFORNIA DEALER
Let’s plan your
next line of defense.
Poseidon AquaShield System
Water Defense Systems · Southern California Dealer
Newport Beach · Balboa Island · Balboa Peninsula
Orange County & Southern California
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