| http://www.w3.org/ns/prov#value | - This depth is a function of the selected vegetation???s ability to grow and thrive in the water depth. ??? Cannot be used in areas with shallow depth to bedrock or unstable slopes. ??? Needs to have a shallow marsh system in association to deal with nutrients. ??? Should be multi-celled preferably three of equal sizes, the first cell should be 3 feet deep to trap coarse sediments and slow turbulen
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