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Land drainage by means of pumps (1915)

Woodward, Sherman M. (Sherman Melville), 1871-, Okey, Charles W. (Charles William), 1886-, United States. Office of Experiment Stations · Washington, D.C. : U.S. Dept. of Agriculture · leaf 38

An illustration from Land drainage by means of pumps, 1915, leaf 38
Average number of storms per year. Total rainfall. 1-dayperiod. 2-dayperiod. 3-dayperiod. 4-dayperiod. 5-dayperiod. 6-dayperiod. 7-dayperiod. 8-dayperiod. 9-dayperiod. 10-dayperiod. 2.018.479.172.041.012 3.059.900.320.083.024.006 3.6151.172.438.142.041.012 4.0711.456.545.160.047.018… … ■-. :ij:„

Drainage · Pumping machinery

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