L3 - sluices (canal with gates), and drainage canals -1100...

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NATS 1840 – Lecture 3 – Dutch Hydraulic Engineering Medieval Dutch Hydraulic Engineering - European rainfall, thick, wet soil, iron–shod plough and oxen - Field rotation, crop, fallow, manure, population increase - Horse-collar, increased horse population, cavalry, stirrups Hydraulic Engineering in Holland - Limited land for farming, starvation, disease and warfare - Holland below sea level, hydraulic engineering to create farmland - Drainage of marshland using canals - Reciprocal effect: draining one area led to flooding in another, draining led to lowering of land further below sea level - Simple technological developments and unexpected consequences Coordination and Control - 13th century: dikes (embankments to hold in water), dams (blocking rivers),
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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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