Increasing urbanization has caused problems with increased flash flooding after sudden rain. As areas of vegetation are replaced by impermeable concrete, tarmac or roofed areas the area loses its ability to absorb rainwater. This rain is instead directed into surface water drainage systems, often overloading
them and causing floods.
The idea behind SUDS is to try to replicate natural systems
that use cost effective solutions with low environmental impact to drain away dirty, surface water runoff. This happens through collection, storage, and cleaning before allowing it to be released slowly back into the environment; such as into water courses.
Floodsense have the necessary skills and expertise to advise and design the most appropriate SUDS system for your future projects.
Earthen berms are frequently required as an integral component in many erosion control systems. They can be used as a dam to temporarily hold back water (floodwater storage) or they can be used to deflect or collect water.
An earthen berm used as a deflector or collector can:
- Divert water flow to a less erodible location
- Collect water from many locations and move it to one large drop structure
- Dam water high enough to create sufficient head on a drop structure to allow it to operate at maximum capacity.
Earthen berms used as a component of a floodwater storage system can:
- Achieve the same objective as a grassed waterway, however, do not require the land area or associated problems related to the grassed waterway
- Work as a slope length reducer. This can reduce sheet erosion problems yet allow the farmer to continue intensive farming practices.
- Reduce the size of outlet pipe required. By storing the water for a period of time the outlet pipe can be reduced in size and be used at full capacity for a longer period of time.
- Reduce the peak flow occurring further down in the watershed.
- Reduce the plugging potential at the drop inlet grate. The ponding will slow down the flow of water allowing debris to settle out before it reaches the grate.
Floodsense have the necessary skills and expertise to advise and create your appropriate earth berm requirements.
Retaining walls provide lateral support to vertical slopes of soil. They retain soil which would otherwise collapse into a more natural shape. The retained soil is sometimes referred to as backfill. Retaining walls can be constructed of many different materials and with a variety of building techniques.
They are especially critical in erosion control, where an area next to or near a river or sea requires protection. Floodsense have the necessary skills and expertise to design and install the most appropriate retaining walls for your projects.
Bunding, also called a bund wall, is a constructed retaining wall designed to prevent inundation or breaches from a known source. It is a secondary
containment system commonly used to protect environments from spills where chemicals are stored. It may also refer to any means of containing flow with possible contaminants by means of a low wall
Floodsense have carried numerous bunding requirements around the UK. Bunding is a legal requirement, particularly around tanks, storage vessels and other plant that contain liquids which may be dangerous or hazardous to the environment.