Dewatering Geobag sediment Filter are an ideal cost effective option for pumping and filtering sediment laden water. These are manufactured from a non woven geotextile to be used with gravity or low pressure fed dewatering. These dewatering bags are typically used where sediment water needs to be filtered and released on site. • 260gsm non woven geotextile • 90 micron pore size • flow rate 80L/m2/sec