![\"Creative](\"https://www.marinespecies.org/aphia/images/cc/by.png\")
During the INTERREG-project Polder2C's 24 overflow tests were executed on a grass covered levee. Velocity of overflowing water was measured using two different methods, both being an upper and lower bound for the velocity at the levee slope. For each test executed the velocity - duration relationship is plotted on top of the graph from Whitehead (1976). This dataset contains the data.
","EngDescr":"Velocity of overflowing water on the levee was measured using electromagnetic velocity meters (Model 802,Valeport Limited, Totnes, Devon, UK) at the upper side of the levee slope and was derived at lower part of the levee slope from Particle Tracking Velocimetry using a camera system. Both velocities provide an upper and lower bound for the velocity at the levee slope. The duration is defined as the time duration of the overflow test until erosion of the grass cover layer started. For each test executed the velocity - duration relationship is plotted on top of the graph from Whitehead (1976) together with the state of the levee slope at the end of the test (failed or intact).
","OrigAbstract":"Tijdens het INTERREG-project Polder2C werden 24 overstromingstests uitgevoerd op een met gras begroeide dijk. De snelheid van het overstromende water werd gemeten met behulp van twee verschillende methoden, die beide een boven- en ondergrens voor de snelheid op de dijkhelling opleverden. Voor elke uitgevoerde test is de relatie tussen snelheid en duur uitgezet in de grafiek van Whitehead (1976). Deze dataset bevat de gegevens.
","OrigDescr":"De snelheid van het overstromende water op de dijk werd gemeten met behulp van elektromagnetische snelheidsmeters (Model 802, Valeport Limited, Totnes, Devon, VK) aan de bovenkant van de dijkhelling en werd aan de onderkant van de dijkhelling afgeleid uit deeltjesvolgsnelheidsmetingen met behulp van een camerasysteem. Beide snelheden geven een boven- en ondergrens voor de snelheid op de dijkhelling. De duur wordt gedefinieerd als de tijdsduur van de overstromingstest totdat erosie van de graslaag begon. Voor elke uitgevoerde test wordt de relatie tussen snelheid en duur uitgezet in de grafiek van Whitehead (1976), samen met de toestand van de dijkhelling aan het einde van de test (beschadigd of intact).
","Comments":null,"ReleaseDate":null,"ReleaseDate0":null,"OrigDescrLang":"Dutch","EmbargoDate":null,"OrigDescrLangNL":"Nederlands","OrigLangCode":"nl","OrigLangCodeExtended":"dut","OrigLangID":41,"DescrCompFlag":null,"DescrTransFlag":null,"Citation":"Depreiter, D.; Verelst. K.; Vercruysse, J.; Peeters, P. (2025). Interreg Polder2C's: Erosion resistance grass cover - limiting velocity as function of duration [DATA SET]. Flanders Hydraulics","AccessConstraints":null,"UDate":"2025-11-27","CDate":"2025-11-27","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2025-11-27 17:01:24.067000","timezone_type":1,"timezone":"+00:00"},"CheckedFlag":1,"PublicFlag":1,"VlizCoreFlag":1,"MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"StatusID":1,"DasType":"Data","DasTypeID":1,"DasOrigin":"Monitoring: field survey","Progress":"Completed","AccessConstraint":"Attribution (CC BY)","AccConstrEN":"Attribution (CC BY)","AccConstrDisplay":" This dataset is licensed under a Creative Commons Attribution 4.0 International License.","License":"https://creativecommons.org/licenses/by/4.0/","AccConstrDescription":"This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.","Lineage":null,"AccConID":21,"DOI":"10.5281/zenodo.17737886"},"dois":null,"spcols":[{"SpColID":130,"SpName":"Waterbouwkundig Laboratorium"}],"keywords":[{"ThesaurusTerm":"Erosion","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_2651","Description":null,"OrigThesTerm":"Erosion","DutchTerm":"Erosie","URI":"http://aims.fao.org/aos/agrovoc/c_2651","DasKeywordDescr":null},{"ThesaurusTerm":"Erosion protection","ThesTypID":12,"ThesType":"WL Kennisdomein","Code":null,"Description":null,"OrigThesTerm":"Erosion protection","DutchTerm":"Erosiebescherming","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Field tests","ThesTypID":2,"ThesType":"CSA Technology Research Database Master Thesaurus","Code":null,"Description":null,"OrigThesTerm":"Field tests","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Flow velocity","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Flow velocity","DutchTerm":"Stroomsnelheid","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Grass","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Grass","DutchTerm":"gras","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Hydraulic structures","ThesTypID":23,"ThesType":"Flemish Research Disciplines","Code":"02010601","Description":"Hydraulic structures is the field of study concerned with the design and construction of structural and geotechnical stable structures submerged or partially submerged in any body of water, which disrupt the natural flow of water. 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