Rainfall-runoff simulation in an experimental basin using GIS methods

Dervos, N; Baltas, EA; Mimikou, MA

dc.contributor.author	Dervos, N	en
dc.contributor.author	Baltas, EA	en
dc.contributor.author	Mimikou, MA	en
dc.date.accessioned	2014-03-01T01:55:27Z
dc.date.available	2014-03-01T01:55:27Z
dc.date.issued	2006	en
dc.identifier.issn	10583912	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/27740
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33744733049&partnerID=40&md5=ede8e7c2eddb559bf7bcb2c7388160ab	en
dc.subject.other	flood routing	en
dc.subject.other	GIS	en
dc.subject.other	hydrographic survey	en
dc.subject.other	rainfall-runoff modeling	en
dc.subject.other	raster	en
dc.subject.other	sensitivity analysis	en
dc.subject.other	watershed	en
dc.subject.other	Attica	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Greece	en
dc.subject.other	Southern Europe	en
dc.title	Rainfall-runoff simulation in an experimental basin using GIS methods	en
heal.type	journalArticle	en
heal.publicationDate	2006	en
heal.abstract	A GIS-based rainfall-runoff model was developed to simulate the runoff discharge at the outlet of a 15.18km2 gauged steep watershed that is located at the prefecture of Attica, Greece. The model's core is the time-area routing technique, which shares the assumptions of the unit Hydrograph theory. This technique accounts for translation, does not account for watershed storage effects and is applicable mainly to small to midsized watersheds. GIS was used to develop the watershed cumulative travel time map that was divided into isochrones in order to generate the time-area histogram. Basic maps were the rasters of digital elevation model and landuse that were processed to derive the rasters of slope, flow direction, flow accumulation and roughness coefficient. The model was calibrated and validated using the observed rainfall-runoff data from thirty storm events. Two simulated hydrographs were calculated for each storm event, using the watershed time-area histogram and two temporal distributions of excess rainfall, estimated by the SCS and the Phi-Index methods. The simulated values of peak flow rate and time to peak were compared with the observed values, via statistical methods. A sensitivity analysis indicated the effect of various parameters on the simulated hydrographs.	en
heal.journalName	Journal of Environmental Hydrology	en
dc.identifier.volume	14	en
dc.identifier.spage	1	en
dc.identifier.epage	14	en