License

Derivative Work

Some of the work on this website is derivative of other works in the public domain. Further use of the map, including images or repurposing, should include a reference to the underlying sources. The following licenses should be referenced, based on the portion of the map used. Details can be found on the methodology page.

Country	Owner	Source	License Tag
—	OSM	OpenStreetMap	{{Cc-by-sa-2.0}}
—	OTM	OpenTopoMap	{{Cc-by-sa-3.0}}
—	Thunderforest	TF Outdoors	{{Cc-by-sa-2.0}}
CH	CH BAFU	EZGG.sqlite	{{PD-Switzerland-official}}
CZ	DIBAVOD	A11_Povodi_vodomer_stanic.shp	{{PD-CzechGov}}
DE(BW)	LUBW	Basiseinzugsgebiet (AWGN)_polygon.shp	{{PD-GermanGov}}
DE(BY)	LfU Bayern	EZG25_01_2016_by.shp	{{PD-GermanGov}}
DE(BB)	LfU Brandenburg	ezg25.shp	{{PD-GermanGov}}
DE(MV)	LUNG M-V	dl_dlm25w_ezg_ws_no.shp	{{PD-GermanGov}}
DE(SN)	Sachsen LfULG	HAUPT_EZG_ARBEITSSTAND.shp	{{PD-GermanGov}}
DE(SH)	LLUR SH	Einzugsgebiete_GFV.shp	{{PD-GermanGov}}
DK	KEFM	vp2_2016nbel12_deloplande.shp	{{DGA map}}
ES(Ebro)	CHE	subche.shp	{{PD-SpanishGov}}
ES(Jucar)	CHJ	Demarcacion hidrografica.shp	{{PD-SpanishGov}}
ES(Quadalquivir)	ideCHG	Ambito_Cuencas.shp	{{PD-SpanishGov}}
ES(Segura)	CHS	CHS_DemarcacionPlan2009_15.shp	{{PD-SpanishGov}}
FI	SYKE	Paajako.shp	{{PD-FinlandGov}}
FR	Sandre	sa:ZoneHydro	{{Gouvernement.fr}}
GR	MECC	hydroscope.gr	{{PD-GreekGov}}
IT	ISPRA	UoM_RBD_2016.shp	{{PD-Italy-EdictGov}}
NO	NVE	Nedborfelt_NedborfeltTilHav.shp	{{NLOD}}
PL	Otwarte Dane	Wektorowe warstwy tematyczne aPGW	{{PD-Polishsymbol}}
SE	SMHI	SW_HARO_2016_1.shp	{{PD-Sweden-URL9}}
SI	Agencija Rs Za Okolje	HIDGRFOBMPolygon.shp	{{PD-Slovenia-exempt}}
UK(ENG)	Environment Agency	WFD Surface Water Management Catchments (Cycle 2)	{{OGL3}}
UK(SCT)	SEPA	SEPA_Catchments.shp	{{OGL3}}
US	USGS	hydrosheds	{{PD-USGov}}
US	CEO Water Mandate	hydrosheds	{{PD-USGov}}