HSI Services, Inc. has 20+ years of experience in water management


How Do The Water Filled Barriers Work?


Three components act together to stabilize the Aqua-Barriers®:

  • INTERNAL BAFFLE SYSTEM – The patented internal baffle(s) lock into place when the barrier is exposed to uneven water pressure.
  • FREEBOARD – The amount of inflated barrier above the water level is called freeboard. A minimum of at least 25% freeboard is required in all Aqua-Barrier® installations.
  • SURFACE FRICTION – Aqua-Barriers® require surface friction to stabilize when exposed to uneven water pressures. Barriers that are exposed to weak soils and/or slick conditions may require additional freeboard.

What Are The Barriers Made Of? Aqua-Barriers® are constructed from industrial grade vinyl coated polyester. This fabric is laminated with a base of woven polyester between two layers of flexible polyvinyl chloride. To receive CAD Drawings, please go to our Contact Us page to request them.

What does this mean to you?

  • These units can be REPAIRED EASILY in the field, in wet or dry conditions.
  • They are REUSABLE.
  • They offer EASE OF HANDLING.

What Sizes Are Available? See the chart below for standard sizes. Inflated heights are 2-feet high through 8-feet high. Standard lengths are 25, 50, 75 and 100 feet long. Custom sized units are available upon request.

Inflated Height (ft/m) Maximum Controllable Water/Sediment Depth (in/cm) Gallons per Linear Foot (gal/L) Inflated Width (ft/m)
2 / 0.61 18 / 45.7 56/212 4.50 / 1.37
3 / 0.92 27 / 69.6 131/496 7 / 2.14
4 / 1.22 36 / 91.4 225/852 9/2.75
5 / 1.53 45 / 114.3 352/1332 11.25/3.43
6 / 1.83 54 / 137.2 506/1915 13.5/4.12
8 / 2.44 72 / 183.0 901/3411 18/5.50

Available for Rent or Purchase. Call us to get a quote today! 1-800-245-0199

Get an Aqua-Barrier® Price Quote Now!!!


How Do The Barriers Connect?

Each inflated Aqua-Barrier® section is straight. When joining the sections, an OVERLAPPING TECHNIQUE is used. This gives you the option of creating a formation to fit your project needs. You will simply overlap the barriers and begin the installation process. The amount of overlap is determined by height, and is listed in the chart below: Engineering Engineering Engineering

Aqua-Barrier Inflated Height (ft/m) Overlap Length (ft/m)
2 / 0.61 3 / .91
3 / 0.92 4.5 / 1.37
4 / 1.22 6 / 1.83
5 / 1.53 7.5 / 2.29
6 / 1.83 9 / 2.74
8 / 2.44 12 / 3.66

We understand that time is money! STOP and call us now! 1-800-245-0199


Overview of Stabilization Features

The Aqua-Comp program will allow you to select an Aqua-Barrier size and place it into a work site environment that you have created. You can select a variety of elements which the Aqua-Barrier will be exposed to including:

  • Water depth
  • Standing or moving water
  • Soil condition

The barrier will be installed, uplift conditions, and slopes and grades. The program will then illustrate a cross section of the Aqua-Barrier as it performs the process of stabilizing itself. Once the barrier becomes stable, a safety factor based on sliding will be given.

Please call us at 800-245-0199 for our FREE Aqua-Comp Distinct Element Modeling software…

AquaCompFlash     8ft high x 22ft 6ft of water on one side and 3ft of water on the other middle 8ft high x 22ft wide 6ft water on both sides beginning Aqua-Comp (4ft high , 3ft water depth) completed with text Aqua-Comp (4ft, 3ft of water depth beginning) Aqua-comp (4ft, 3ft water depth) stablized   Call 800-245-0199 to receive a FREE copy of the Aqua-Comp program today!

Our Aqua-Barriers® are available for Rent or Purchase

Get an Aqua-Barrier® Price Quote Now!!!


Dr. Jack Fowler |  January 18, 1938 – July 7, 2018

HSI Services has been blessed with more than 20 years of engineering support from Jack Folwer, PE
Jack, with the support of his wife Sandra provided critical engineering and design support which brought the water inflated patented baffle design from concept into reality. We will forever be grateful for their support and cherish them as longtime friends.


Dr. Fowler received his BS degree in Civil Engineering from the University of Mississippi in 1961, his MS degree in Civil Engineering from Mississippi State University in 1972, and his Ph.D. degree in Civil Engineering from Oklahoma State University in 1979. His major field of study was Geotechnical Engineering. Dr. Fowler was a Registered Professional Engineer in the State of Mississippi, a member of ASCE, SAME, PIANC, WEDA and Chi Epsilon (Honorary Engineering Fraternity). He leaves behind a lasting legacy.

All of us at HSI Services would also like to recognize the contribution of our late friend and colleague, John Palmerton PE, for his participation in the development of our Aqua-Comp program. John worked for 30 years with the US Army Corps of Engineers at the Vicksburg, MS office and was a pioneer in development of the distinct element modeling program. His invaluable involvement in the design of our systems has culminated in the safest and most stable water inflatable dam on the market today.


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