7. 2. Filter strips and swales Vegetated features which are used to drain water from impermeable areas. Slows rate of water into watercourses
8. 3. Permeable surfaces and filter drains Areas which have a volume of permeable material below ground to store water. Permeable surface can consist of grass, gravel, porous paving etc Slows rate of water into watercourses
9. 4. Basins and Ponds Basin Pond Takes runoff water during storm periods and are free from water during dry weather conditions Contain water during dry periods and are designed to hold more when it rains.
10. Self Closing Flood barrier Dutch design used to protect premises against flooding The flood defence device rises from the ground level up to 1m high and lengths of 100m to 1000m SECTION