This layer shows location of drainage sumps within the Metropolitan Region and is provided for information only. A Sump is defined as a retaining wall placed at the inlet or outlet of a stormwater pipe or culvert. It can be owned by Main Roads WA or others.Data dictionary:FieldAliasTypeDescriptionSUMP_NOSump_NoPolygonOutlet destination area e.g. basins, rivers, lakes, ocean etc.Road_No Road NoStringMRWA Road NumberMapping_CommentsMapping CommentsStringAny additional comments that relate to this pipe section including assumptionsOwnerOwnerSmallIntegerAuthority that owns the land the sump is on.Maintained_ByMaintained_BySmallIntegerAuthority that is responsible for maintenance of the sump.Disclaimer: 1. Please note that Main Roads WA drainage data is provided for information only and the data may be inaccurate, incomplete or out-of-date. Please use as a reference only and verification is to be undertaken on site.2. Confidence Rating has been assigned to individual assets to provide an indication of the accuracy of the data. However please note that this is only an estimated rating which should be used as a reference only.3. Owner and Maintained By – Please note that Main Roads WA drainage data includes multiple organisations’ interface drainage and, as a result, the ‘Owner’ and ‘Maintained By’ attribute only to be used as a reference only as it may be inaccurate and should not be referred to as the source of truth.4. Asset Types:a. Interfacing Structuresi. Note that the drainage data includes interface points between Main Roads WA drainage structures and structures owned by other asset owners. However not all assets owned by other asset owners have been included. Please seek clarification from the respective asset owners if required.b. Ghost Structure / Nodei. Ghost Node Structure represents a physical structure where the asset type is not known and Ghost Node represents a node only that is not owned by Main Roads WA. Any assets owned by other organisations beyond a direct connection can be represented by the use of a Ghost Link.c. Basin Flow Linki. Where the sump / basin does not represent the final outlet destination of the drainage network. Basin flow link will be used to connect the sump/basin to their ultimate outlet destination. The basin flow link is stored within the Pipe feature class.Note that you are accessing this data pursuant to a Creative Commons (Attribution) Licence which has a disclaimer of warranties and limitation of liability. You accept that the data provided pursuant to the Licence is subject to changes.Pursuant to section 3 of the Licence you are provided with the following notice to be included when you Share the Licenced Material: "The Commissioner of Main Roads is the creator and owner of the data and Licenced Material, which is accessed pursuant to a Creative Commons (Attribution) Licence, which has a disclaimer of warranties and limitation of liability."=Note that you are accessing this data pursuant to a Creative Commons (Attribution) Licence which has a disclaimer of warranties and limitation of liability. You accept that the data provided pursuant to the Licence is subject to changes.Pursuant to section 3 of the Licence you are provided with the following notice to be included when you Share the Licenced Material: "The Commissioner of Main Roads is the creator and owner of the data and Licenced Material, which is accessed pursuant to a Creative Commons (Attribution) Licence, which has a disclaimer of warranties and limitation of liability."Creative Commons CC BY 4.0 https://creativecommons.org/licenses/by/4.0/
