how does embankments help in controlling flood
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ᴇᴍʙᴀɴᴋᴍᴇɴᴛs ᴀɴᴅ ғʟᴏᴏᴅʙᴀɴᴋs
ɪғ ᴡᴇʟʟ-ᴄᴏɴsᴛʀᴜᴄᴛᴇᴅ, ʀɪᴠᴇʀsɪᴅᴇ ᴇᴍʙᴀɴᴋᴍᴇɴᴛs ᴄᴀɴ ʙᴇ ʀᴇʟᴀᴛɪᴠᴇʟʏ ᴇғғᴇᴄᴛɪᴠᴇ ɪɴ sᴛᴏᴘᴘɪɴɢ ᴡᴀᴛᴇʀ sᴘɪʟʟɪɴɢ ᴏᴠᴇʀ ᴏɴᴛᴏ ᴀᴅᴊᴀᴄᴇɴᴛ ʟᴀɴᴅ, ʙᴜᴛ ɪɴ sᴏ ᴅᴏɪɴɢ, ᴛʜᴇ ɴᴀᴛᴜʀᴀʟ ғʟᴏᴏᴅᴘʟᴀɪɴ ɪs ɪsᴏʟᴀᴛᴇᴅ ғʀᴏᴍ ᴛʜᴇ ʀɪᴠᴇʀ, ғʟᴏᴏᴅ sᴛᴏʀᴀɢᴇ ᴄᴀᴘᴀᴄɪᴛʏ ғᴏʀ ᴛʜᴇ ᴄᴀᴛᴄʜᴍᴇɴᴛ ɪs ʀᴇᴅᴜᴄᴇᴅ, ᴀɴᴅ ᴠᴀʟᴜᴀʙʟᴇ ᴡɪʟᴅʟɪғᴇ ʜᴀʙɪᴛᴀᴛ ɪs ʟᴏsᴛ.
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If well-constructed, riverside embankments can be relatively effective in stopping water spilling over onto adjacent land, but in so doing, the natural floodplain is isolated from the river, flood storage capacity for the catchment is reduced, and valuable wildlife habitat is lost.
An embankment is an uplifted earthen structure constructed along the river channel to artificially reduce the size of the floodplains by constricting floodwaters to a narrow stretch. The land outside the embankment is supposed to be safe from floods.
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