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Dutch engineer (1893–1959) From Wikipedia, the free encyclopedia
Johan van Veen (Uithuizermeeden, 21 December 1893 – The Hague, 9 December 1959) was a Dutch hydraulic engineer. He is considered the father of the Delta Works.
Johan van Veen | |
|---|---|
.jpg) Johan van Veen (1953) | |
| Born | 21 December 1893 Uithuizermeeden, Netherlands |
| Died | 9 December 1959 (aged 65) The Hague, Netherlands |
| Alma mater | Delft University of Technology |
| Occupation | Civil engineer |
| Employer | Rijkswaterstaat |
| Organization | Government |
| Notable work | Delta Works |
Johan van Veen was the fifth child of seven in a farming family. He was the brother of Marie van Veen, married to the artist Johan Dijkstra. In 1913, after high school graduation, he started his studies in Delft at the Technische Hoogeschool van Delft. He studied civil engineering. In 1919, he graduated as "ingenieur" (equivalent to M.Sc. in engineering).[1]
Van Veen worked as an engineer for the Drainage Department of the Provincial Water Authority of the Province of Drenthe. The task of this department was to develop plans to improve the drainage and road structure of the province. In turn, this would enlarge the agricultural yield and to transport the products in a more efficient way to the markets (in the western part of the Netherlands).
During World War I, it became evident that the Netherlands depended too strongly on food products from abroad. The interwar years were focused on agriculture. In order to have solid grounds for such plans, the borders of watersheds were charted, discharge measurements were made and leveling out valleys and the adjacent higher grounds works were executed. Van Veen carried out these studies in cooperation with agricultural engineer F.P. Mesu (who graduated in Wageningen).[2]
In 1926, van Veen left the Provincial Water Authority. From August 1926 to October 1928, he worked in Surinam at the Surinaamse Bauxiet Maatschappij (Suriname Bauxite Company), later a subsidiary of Alcoa, in Moengo, Suriname.[3]
In 1929, after his return to the Netherlands, van Veen held a position at Rijkswaterstaat (the Executive Agency of the Dutch Ministry of Infrastructure). He became head of the newly created Research Department for Tidal Rivers and Estuaries. His first assignment was to improve the hydraulic conditions at Hellegat, a complicated bifurcation of estuary branches. He also developed a new method to calculate tides, an improvement on the formulas developed by Hendrik Lorentz on the closure of the Zuiderzee. He published his Ph.D. thesis on sand movement in the Strait of Dover (which was relevant for Dutch coastal morphology), based on extensive measurements in that area. He wrote many (Dutch) reports on the coasts, tidal movements, estuaries and salt intrusion.[4]
In the years before and during World War II, van Veen executed many studies on the problem of salt intrusion into tidal rivers. During the war, he prepared a plan called "Verlandingsplan" to manipulate tidal rivers in such a way that natural silting-up would take place, and that to reclaim this new land would be easy. Just after the war, he presented this plan again, but mainly because at that time the country focused rather not on reclaiming land, but on repairing war damage.[5]
From 1937 onward, van Veen warned about the deplorable condition of the Dutch flood defences. He stipulated that a disaster was imminent, but politically he found no support for his warnings, the main reason being that improvement of dikes would cost a lot of money, which was not available in the Netherlands just after the war (the country depended mainly on money from the Marshall Plan).
In 1939, Pieter Jacobus Wemelsfelder, a colleague of van Veen, published a paper in the journal de Ingenieur (English: The Engineer) that was the first to apply statistical methods to the occurrence of storm surges.[6] His research suggested a shift in design approach, moving away from basing flood design on the highest observed flood level towards designing for a flood with a calculated probability. In the same year, van Veen conducted a factor analysis of storm surges for the first time. His work explored how changes in river run-off, river channel geometry, and sea level rise affected the design flood. Despite these studies focusing on different aspects of storm surges, they arrived at the same conclusion: that the delta region of The Netherlands faced significant dangers.[7] Since 1938, van Veen had been working on plans to mitigate these risks. He proposed constructing a dike ring for four islands, a storm surge barrier in the Lek, and a high ring of dikes around Dordrecht.
Van Veen published a book in English on the history of Dutch Hydraulic Engineering (Dredge, Drain, Reclaim, the Art of a Nation).[8] In later reprints of this book he added a chapter by "Dr. Cassandra" as he used this pseudonym, including these warnings. His final warning report was a study describing the risks, including a plan to improve the situation by closing some estuaries. This document was dated January 29, 1953. During the following night The Netherlands were struck by the biggest storm surge ever, the North Sea flood of February 1st, 1953. After the disaster a State Commission was installed (18 February 1953), and Johan van Veen was appointed Secretary of the State Commission.
In May 1953, the commission offered its first interim report, recommending immediate closure of the Hollandse IJssel with a storm surge barrier Flood barrier, and to implement Van Veen's plan to close the estuaries (the Delta Works). Eventually this work had been carried out; the final report of the commission was published in 1960, one year after Johan van Veen died. In The Netherlands Johan van Veen is remembered as the "father of the Delta Plan" and in England as "Master of the Floods".[9][10]
Johan van Veen has a number of inventions to his name. Notable is the Van Veen Grab Sampler, a device to take (disturbed) bed samples from the seabed (around 1930).[11] He is also the inventor of the pneumatic barrier to prevent salt intrusion (around 1940).[12] In 1930, he proved the analogy between electricity and water flow. From this principle he developed an analog computer to calculate tidal flow (electric analogon).[13] In the period 1944-1956 it had become operational. Later on this machine was updated and became the practical computer to calculate tidal flow and water levels in the Dutch Delta to predict the effect of closure works, the Delta Works. This analog computer now bears the name Deltar.[14]
On May 5, 1927, van Veen married Hendrika ("Henny") Aalfs during his stay in Suriname. They had three children. Unfortunately, their marriage was not very happy. Although he came from a Dutch Reformed Church family, he converted to Christian Science until 1937, following his sister Anna, who lived in the United States.[15]
Van Veen suffered from a number of heart attacks, the first one in 1937 and later in 1948 a heavy one after his "four-island-plan" was rejected. In 1959 he had his last, fatal attack in the train when on his way to a meeting regarding his plan of a new harbour near Delfzijl, the Eemshaven.[16]
For a full list of all his publications (mainly in Dutch) is referred to the Tresor of Dutch Hydraulic Engingeering.
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