Tidal water causes problems in many parts of the world. At high tide, or spring tides water can be forced back into the drainage systems. WaStop® can prevent this problem.
WaStop reduces flooding on Anna Maria Key and protects against environmental damage
Anna Maria Key is a picturesque barrier island off the coast of western Florida, USA. Near Sarasota, it is the home of communities such as Anna Maria, Holmes Beach and Bradenton Beach. Anna Maria Key has become a popular destination for visitors all over the world because of the beautiful beaches.
Unfortunately, tourism and development has led to the gradual depletion of the islands natural freshwater lens. Development has also led to greater flood damage to property and increased negative environmental impact to the surrounding waters. In an effort to replenish the lens, mitigate flood and environmental damage the island, engineers have utilized infiltration basins. These basins allow rainwater to be captured and have increased the permeation rate which significantly reduces flooding. However, the effectiveness of this solution is hampered by tide water entering the storm water conveyance system.
We at Wapro know that providing an effective and secure solution is essential. Our engineers have the customers need top of mind when designing our solutions.
WaStop inline check valves provides the perfect solution to prevent backflow into the stormwater conveyance system on Anna Maria Key. WaStop is simple to install, self-cleaning and completely sealed against the ever-changing tides. Developed on the same principles that are the foundation of Wapro, WaStops ingenious function combines common sense and simplicity to provide our customers with the best possible protection against flooding and backflow.
WaStop was installed in minutes at Anna Maria Key and once in place the valve prevents tide water to enter the storm water system with 100% security. With the help of WaStop the islands infiltration basins now work effectively, reducing both flood and environmental damage. A perfect solution for both the inhabitants and the environment.
WaStop installed in Anna
Maria Key, USA.
Protects homes from flooding
We all know someone who has been affected by flooding. The unrest of knowing that water can flow into your home, destroying memories. We at Wapro understand that this causes distress.
In the seaside town Rhyl in Wales, UK, studies have shown that the level of protection of the storm-hit coastal flood defenses between Splash Point and the east end of Rhyl golf course is now so low that devastating floods could happen between every five or 50 years. Therefore, a flood protection scheme has been developed to protect the hundreds of homes that were affected by the storms. The work involved the construction of a new storm water outfall which will discharge flood water from the holding lagoon at the Golf Club and channel any flood water out to sea during low tide under controlled conditions.
Three WaStop inline check valves have been installed in the existing outfall to prevent storm water entering during tidal surge, whilst being efficient and effective in evacuating flood water, which is stored during ‘tide-locked’ scenario’s. WaStop was the given choice because of its simple installation, self-cleaning mechanism and complete protection against backflow.
Our Design Engineers, led by Pontus Magnusson, developed WaStop on the same principles that are the foundation of Wapro. WaStop’s ingenious function combines common sense and simplicity to provide our customers with the best possible protection against flooding and backflow. We know that our products make a difference. Holding back the flood.
Thanks to ACE for the information regarding this installation.
WaStop installed in Rhyl, Wales.
staying dry with rising tides – miami beach
|The City of Miami Beach, Florida, USA is a beautiful resort community nestled between the Atlantic Ocean and Biscayne Bay. Miami Beach is built on natural and man-made barrier islands.
Infrastructure which ensures residents and tourists in Miami Beach aren’t regularly flooded by sea water is often taken for granted however with a changing climate it has become evident to residents that there are issues that need to be dealt with.
Much of the system that transports stormwater directly to the sea was built just a few centimeters to one to two meters above sea level. Over the years these outlet structures have settled, and sea levels have risen, often causing seawater to flow into the stormwater system.
Overfilled stormwater systems cause seawater to push up onto streets as well as residential and commercial properties causing blocked roads, inconvenienced pedestrians, closed businesses, and damaged homes.
A team of scientists of the Potsdam Institute for Climate Impact Research (PIK) in Potsdam, Germany has detected a clear upward trend in the past few decades toward more unprecedented daily rainfall events. The institute found that these once anomalous events have increased in frequency 24 percent in central and eastern US.
Miami Beach is spending more than US$500 million in infrastructure to brace for the scientific projection that the sea level will rise 1.5m by the turn of the century. This paper will present issues surrounding aging infrastructure, and solutions put in place during phase 1 & 2 of this monumental project exhibiting the success of the project and potential issues surrounding trying to flood-proof a city.
Please download the full report Staying dry with rising tides – Case study Miami Beach _Wapro WaStop Inline Check Valve.
 Jayalakshmi K – Potsdam Institute research links record-breaking daily rainfall to global warming
WaStop protecting State Highway 29 underpass
Tauranga is the most populous city in the Bay of Plenty Region of the North Island of New Zealand. The city is the center of the fifth largest urban area in New Zealand, with an urban population of approximately 134,400 and is a main center for business, international trade, culture and fashion.
The Maungatapu expressway, also known as State Highway 29, travels over the Kaimai Ranges linking the Bay of Plenty and Waikato regions. The highway is a very busy road with its two-laned single carriageway with occasional passing lanes and slow vehicle bays.
Unfortunately, there have been problem just off the Maungatapu expressway where spring tides were flooding the floor of a nearby underpass which made it unusable for vehicles, pedestrians and cyclists. The drain for the underpass is lower than the average full tide height causing regular flooding. Up to 10-15cm of salt water flooding occurred during spring tides.
Thanks to Hynds for the information surrounding this installation.
Underpass by the Maungatapu expressway flooded by spring tides.
WaStop prevents flooded roads in Carolina Beach. Holding back the flood.
Carolina Beach is a seaside destination in North Carolina, USA, known for its colorful, vintage charm. Climate change affects sea side towns and properties dramatically. In Carolina Beach the townspeople have dealt with flooded roads caused by high lunar tides for many years. They were used to the blocked roads, wet pavements, grass killed off by salt water. All an effect of lunar tides filling the storm water system and catch basins, which eventually overflow onto the streets. The maintenance crew at Carolina Beach regularly placed ‘Road Blocked’ signs and waited patiently for the tide to recede. Investing in a permanent solution to this problem was pushed up the priority list. Solving the problem would save maintenance resources, and effectively allow allocation of those resources to areas where a solution couldn’t be found. Solving the problem would also increase peace of mind for residents.
We at Wapro know why providing an effective solution is important. In this instance, we recommended an 18” WaStop Inline Check Valve which was installed easily into the existing pipe. Unlike any other check valve available today, Wastop can be mounted horizontally, vertically, on an inlet, outlet, in a chamber, or utilizing flanges making it a simple and safe solution for backflow and flooding problems.
Wapro’s engineers have worked in the field and know that a quick, easy, secure installation is essential. Carolina Beach could install the WaStop in minutes by simply bolting the WaStop onto the existing headwall. No construction work, no alterations.
Carolina Beach can focus on being an enjoyable vacation destination without the shadow of potential flooding thanks to WaStop.
Roads in Carolina Beach closed due to high tide flooding.
WaStop protects Lomma
WaStop inline check valve protects Hull
Mount Pleasant, South Carolina now protected with WaStop
|Location: Mount Pleasant, South Carolina, USA
Client: Town of Mount Pleasant
Problem: Mount Pleasant South Carolina lies on Charleston Harbor within sight of Fort Sumter National Monument. People are drawn to Mount Pleasant by beautiful views of the water, cool breezes and southern charm. Growth in the last 30 years around the cities Old Village historic district has put high value developments right up to tidal creeks and inlets for easy ocean access. The proximity comes with risk for the property owners. Storm water systems funnel run-off through a series of channels and pipes out to these tidal areas. When the tides are high, sea water can fill this system preventing run off from being carried away causing streets, yard and homes to flood. The salt water often damages the roads creating costly repairs for the city and kills lawns and shrubbery frustrating home owners.
Check valves are used to stop this tidal water from entering the system at the pipe outlet. Traditional devices such as flap valves often fail due to a build-up of debris or shell fish in and around the flap, thus requiring regular maintence and cleaning. One such valve was used on a beautiful cul-de-sac. The home owner that was primarily effected by the flooding informed us that during heavy rains the cul-de-sac street would flood completely preventing anyone from parking or accessing the homes with getting wet. Additionally, his grass and ornamental plants were regularly killed by salt water. The frustrated home owner had to take his broom to clear out the flap valve during these storms standing dangerously on a muddy bank.
Solution: The flap valve was removed, and a WaStop was installed on the outfall. A quick easy installation was performed by simply sliding the WaStop into the outfall pipe and securing it. Once completed the home owner was instantly protected from sea water flooding.
Design: 18’’ Stainless steel WaStop valve located in the corrugated pipe out fall.
WaStop DN110 Lakes Entrance, East Gippsland, Victoria, Australia
|Location: Lakes EntranceCustomer: East Gippsland Shire CouncilEnd User: Eastern Beach Holiday Park
Problem: A camping ground had problems with flooding in a low lying area that was close to the tidal river. The flooding was due to the tidal river flowing back into the stormwater pit which overflowed onto the surrounding ground. Whilst the tide was high the stormwater pipes were filled with sea water reducing retention capacity. This lead to several flooded camping sites in the holiday park leading to an inability to rent out those sites during certain seasons which meant a loss of income for the holiday park owner.
Solution: A offline pit was dug beside an online pit to take ground water run-off. A WaStop was installed between the online pit and the offline pit to prevent backflow into the offline pit during high tides when the online pit fills with water from the tidal river.
WaStop Design: A standard WaStop DN110 was installed between the pits.
Thanks Hygrade Water Australia for supplying this information. http://www.hygradewater.com.au/
Tidal ingress New Zealand – WaStop DN225-DN600mm
Location : Thames Coromandel Coast
Client : Thames Coromandel D/C
Problem : High tide occurrences invading stormwater system via coastal outfalls. Being very flat and at sea level parts of Thames and the surrounding coast were subjected to high tides filling the stormwater system and causing flooding.
Solution : A number of WaStops ranging in size from 225 up to 600mm have been installed on problematic outfalls and have stopped the ingress of sea water giving the local authorities full use and capacity of their stormwater system.
Cochrane St Thames. 600mm WaStop inline and bolted to the end of the pipe
TePuru Boat Ramp Thames. Malfunctioning flap gate (frame still visible in photo) replaced by an inline WaStop secured to the inner wall of the pipe.
Albert St Thames. WaStop installed in end of outfall pipe.
Thanks to Hygrade Products New Zealand for supplying this information. www.hygrade.net.nz
Cochrane St Thames
TePuru Boat Ramp Thames