Flood Protection for
Property and Facility Managers
Reusable, Engineered Flood Barriers for Multifamily, Commercial, and Mixed-Use Properties
Garrison Flood Control is a nationwide leading manufacturer, provider, and professional installer of innovative and efficient flood protection and water diversion systems. We specialize in designing reusable, rapidly deployable flood barrier systems for property and facility managers protecting apartment buildings, office complexes, retail centers, parking garages, and mixed-use developments.
Property Managers use our BLUEFIN™ Perimeter Flood Barrier for property-wide protection, the HAMMERHEAD™ Aluminum Flood Plank System for entryways, garages, and loading docks, and MAYIM™ Temporary Water Diversion Barriers for long perimeters and infrastructure.
Every system is designed for repeated deployment by on-site maintenance staff, across multiple buildings, multiple events, and multiple flood seasons. With an already demanding day-to-day schedule, Property Managers and Facility Managers shouldn’t have to worry about scrambling to protect against dangerous flood waters.
Why Property Management
Flood Protection Matters
FEMA reports that just one inch of flood water can cause approximately $25,000 in damage. Multiply that across a portfolio of buildings and the exposure compounds fast.
Approximately 40% of businesses never reopen after a major flood event.
Floods have been declared federal disasters in all 50 states.
Roughly 25% of all NFIP flood insurance claims come from properties outside designated high-risk flood zones.
The average NFIP flood claim paid is over $40,000.
Tenant displacement after a flood event can take 12+ months in multifamily housing; commercial tenants often relocate permanently.
What is the best flood barrier system for a condominium or multifamily property?
It depends on what you're protecting. For property perimeters and full-site protection, the standard solution is a perimeter flood barrier system like Garrison's BLUEFIN, which can be permanently installed and deployed quickly.
For entryways, garages, and loading docks, an aluminum flood
plank system like HAMMERHEAD is the standard. Most multifamily portfolios combine both.
How do I protect a parking garage or loading dock from flooding?
A self-rising flood barrier is an effective solution for protecting parking garages, loading docks, and other low-lying entry points.
Garrison’s OYSTER™ Self-Rising Flood Barrier remains recessed in the ground during normal conditions and automatically rises as floodwater enters the system, helping protect the opening without requiring manual deployment or on-site personnel.
What's the best sandbag alternative for property managers?
Reusable engineered flood barriers, aluminum plank systems, perimeter flood barriers, and water diversion barriers outperform sandbags on speed, reliability, labor cost, and total cost of ownership.
A single deployment of HAMMERHEAD or MAYIM can replace thousands of sandbags and is reusable across dozens of flood events.
Can one flood barrier protect an entire commercial property?
Most properties are protected with a combination of systems. A perimeter barrier like BLUEFIN covers the property line, MAYIM water diversion barriers protect long runs and infrastructure, and HAMMERHEAD aluminum planks seal individual openings.
Garrison's team sizes a whole-property plan based on building layout, flood elevation, and tenant exposure.
How quickly can flood barriers be deployed by maintenance staff?
Many Garrison flood protection systems are designed for fast, straightforward deployment by one or two maintenance staff members without specialized training.
Depending on the system and the area being protected, barriers can often be installed or activated within minutes, helping property teams respond quickly when flooding is forecast.
Are these flood barriers reusable across multiple properties and flood events?
Yes. Garrison’s flood protection solutions are designed for repeated use and long-term property protection. Depending on the system, barriers may be stored, transported, and redeployed across multiple locations within a property portfolio.
Reusable flood barriers can also provide a more cost-effective and dependable alternative to single-use or labor-intensive flood protection methods.
Garrison, Your Partner in Property Management
Flood Preparedness
The Modern Sandbag Alternative:
Why Facility Managers Are Switching to Reusable Flood Barrier
Find The Right Flood Protection For Your Property
Full Property Perimeter Flood Protection
A permanent perimeter flood barrier serves as the ideal year-round defense for entire properties, multi-building facilities, condominiums and critical infrastructure.
→ Recommended: BLUEFIN Perimeter Flood Barrier
→ Alternative for non-permanent installs: MAYIM Temporary Water Diversion Barriers
Protecting Building Entryways, Parking Garages & Loading Docks
For fixed openings — storefront entries, garage doors, loading dock bay doors, lobby entrances, parking ramps — an aluminum flood plank (stop log) system is the standard. Permanent side posts stay in place; planks slot in only when needed. Expected deployment time: under 10 minutes per opening.
→ Recommended: HAMMERHEAD Aluminum Flood Plank System
→ Alternative for door-only protection: MAKO Inflatable Flood Barrier
Long Perimeter Protection, Driveways & Infrastructure
A water diversion barrier represents the industry standard for protecting driveways, long stretches of frontage, HVAC pads, electrical infrastructure, utility equipment, and pump houses. This rapid-deployment system is scalable to hundreds of linear feet and built to withstand an entire storm season in place.
→ Recommended: MAYIM and MAYIM MAX Water Diversion Barriers
→ For oversized or extended deployments: BELUGA Oversized Sand-Filled Barriers
Basements, Stairwells & Below-Grade
Flood Protection
For basement doors, exterior stairwells, parking garage ramps, and below-grade entrances, compact barriers that seal tightly against irregular surfaces are essential.
→ Recommended: HAMMERHEAD (custom-fit) for stairwells and ramps
→ Alternative for other sealed openings: MAKO Inflatable Flood Barrier; for window-wells and other openings: YELLOWFIN Flood Panel
Featured Flood Control Solutions:
BLUEFIN — Perimeter Flood Barrier
Designed for comprehensive property-wide flood protection, this flexible perimeter flood barrier system is deployed when flooding is forecasted along vulnerable critical infrastructure, parking areas, facilities, buildings and more. It is the perfect solution for sites requiring robust flood defense without the year-round presence of highly visible barriers.
Property Management Uses:
Semi-permanent installation, quick to deploy on-demand by maintenace facility staff.
Protects entire property perimeters of buildings, parking lots, campus facilities and more.
Engineered for extensive use and long service life; designed to outlast and perform in extreme storm events.
Removes the operational burden of staging sandbags before a severe weather threat.
MAYIM — Water Diversion Barriers
Modular water diversion barriers that interconnect in sections to surround a property, divert water away from a building, critical facility access area, or to protect long runs of property infrastructure. The standard solution when flood protection requires hundreds of linear feet of flexible, reusable, quick-deploy, temporary flood control and stormwater mitigation.
Common Property Management Installations:
Building property perimeter protection.
Driveways, access roads, and back-of-house service corridors.
HVAC pads, generator yards, and utility infrastructure.
Electrical substations, transformers, and pump houses.
Waterfront protection on lakeside or riverside properties.
Maintenance and mitigation operations at water treatment facilities.
HAMMERHEAD — Aluminum Flood Plank (Stop Log) System
Aluminum stop-log flood barrier system: U-channel mounting posts are installed on either side of an opening. 6063-T6 Aluminum planks slot into the sides of each post, and stack when flooding is expected. The most common Garrison flood control system for protecting entryways, garage doors, and loading docks and more at managed properties.
Perfect Protection for Property Managers:
Compact storage — planks store flat in a maintenance room or facility closet.
Quick deployment, no tools required beyond a hand wrench.
Durable under high wind and debris; rated for use during active hurricane events.
Made in the USA, meets NFIP Technical Bulletin 3 requirements for dry floodproofing.
Patent-pending SureGasket and AlumiSeal sealing system, available only on HAMMERHEAD.
Customizable height — aluminum planks stack to the required property height of protection for opening flood defense.
Types of Property Management Installations:
Property storefronts and building lobby entryways.
Service and maintenance room doors.
Retail unit openings in multi-tenant buildings.
Walk-out basement and stairwell openings.
Facility electrical rooms.
Parking garage access.
Loading dock and bay doors.
View Our Case Studies on How to Protect and Prevent Flooding at Managed Properties
Predict ▸ Plan ▸ Prepare, with Garrison Flood Control
PROTECTION OF PROPERTY
Safeguarding buildings and assets from flood damage, maintaining the integrity and value of properties.
COST SAVINGS
Reducing the costs associated with flood damage repairs, insurance premiums, and loss of rental income.
PREPAREDNESS
Effective flood control measures ensure properties are prepared for any flood-related emergencies.
Contact Us
Feel free to contact us with any questions or for advice on the best flood control solution for your specific needs.
Start Protecting Your Properties Today
Frequently Asked Questions About Property Management Flood Protection
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The best flood barriers for property managers are modular, easy-to-deploy systems that can protect multiple areas across a property portfolio. Solutions like aluminum flood barriers, inflatable flood barriers, and perimeter systems are ideal because they can be quickly installed by staff, reused across properties, and adapted to protect entry points, garages, and critical infrastructure, often with support from providers like Garrison Flood Control that specialize in scalable solutions.
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Flood protection is critical because flooding is the most common natural disaster in the U.S. and can cause severe property damage, operational downtime, and financial loss. In fact, nearly 40% of businesses never reopen after flood damage, making proactive mitigation essential for long-term property viability.
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Flood protection systems are necessary for both residential and commercial properties, including apartment complexes, office buildings, retail centers, and mixed-use developments. Property managers overseeing multiple buildings must implement scalable solutions to protect assets, tenants, and infrastructure across their portfolio.
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Common causes include storm surges, flash floods, river or creek overflow, sewer backups, neighborhood flooding, water main breaks, and even HVAC system failures. These risks can impact both exterior and interior areas of a property, often with little warning.
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Flood barriers can be deployed strategically to protect:
Building perimeters
Entryways and loading docks
Parking garages and basements
Critical infrastructure like electrical rooms and server areas
These systems work by diverting or blocking water before it enters vulnerable areas.
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Property managers typically benefit from a combination of systems, including aluminum flood planks, water diversion barriers, inflatable flood barriers, automatic flood gates, and perimeter flood walls. Using multiple systems allows protection across different entry points and elevations.
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Yes. Many modern flood barriers are designed for rapid deployment and can be installed by property staff without specialized training. Systems are engineered to be lightweight, modular, and easy to store, allowing for quick response during emergencies.
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Flood mitigation systems help reduce repair costs, insurance premiums, and loss of rental income caused by property damage. Preventing flooding also protects asset value and avoids extended downtime that can disrupt tenants and operations.
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The most vulnerable areas include:
Doorways and ground-level entrances
Loading docks and garage ramps
Basements and stairwells
Utility rooms and electrical systems
Protecting these points is critical because they are the most common entry paths for floodwater.
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Yes. Flood protection solutions can be tailored based on property layout, elevation, flood risk level, and infrastructure. Customization ensures that each building or facility receives targeted protection where it is most needed.
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The most effective strategy is to follow a proactive approach: assess flood risks, implement the right mix of barrier systems, and ensure staff are prepared to deploy them quickly. Early planning reduces emergency response stress and ensures properties are protected before flooding occurs.