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Unformatted text preview: sluices (canal with gates), and drainage canals -1100 and 1300 hundreds of dikes and dams -Excluding external water meant more flooding-Polders: units of land at the same water level with shared drainage system, labor and capital intensive-System of autonomous water boards, predated government -No central co-ordination, taxes and public works local-The water boards were responsible for: regular inspection of facilities, recommending repair, supervising and organizing labour and materials, collecting taxes, dispute resolution-Management of problem, hydrological hypothesis, unintended consequences, technological fix, environmental changes...
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- Spring '11