Polygons representing natural waterway or channel structure locations (such as sediment ponds, litter traps, weirs, spillways, drop structures) and associated details. Includes description, asset section (for As Constructed drawings) and key attributes. This layer is intended to help identify the location of Melbourne Water's drainage assets for asset management and maintenance purposes.
Waterway (Reach) layer created from original FIS 1:50K (Vicmap Hydro) streams data set which included only those waterways within catchments of greater than 60ha. Waterways (Reach) Rectification project undertaken 2001 to 2003 to review and correct the extent of the waterways reach network to ensure a complete data set exists (using the Drainage Metropolis Boundary, 50K data, 1:2500 Drainage Record Plans, Drainage Limits data, orthophotos, as constructed and/or design drawings, contour data and Melway Street Directory). Waterway (Reach) extents defined and attributes populated in GIS and Hansen (AMIS) for all records including assigning nodes and node numbers (for start / end points) and removing any reaches less than 100 metres in length that are predominantly channel assets. Waterways in extended area incorporated in 2005 using Vicmap Hydro data and aerial imagery, then updated in 2009/10 using Lidar survey data (contours). Data is maintained using Lidar survey data (contours) and 60 ha limits. Please refer to metadata for each record in dataset for specific source / accuracy information.
NOTE: Whilst every effort has been taken in collecting, validating and providing the attached data, Melbourne Water Corporation makes no representations or guarantees as to the accuracy or completeness of this data. Any person or group that uses this data does so at its own risk and should make their own assessment and investigations as to the suitability and/or application of the data. Melbourne Water Corporation shall not be liable in any way to any person or group for loss of any kind including damages, costs, interest, loss of profits or special loss or damage, arising from any use, error, inaccuracy, incompleteness or other defect in this data.

This series comprises hydrographic survey plans of Victoria's coastline, bays and inland waterways. The maps primarily document soundings of the sea floor, recording the depth at various locations. These are recorded as rows of numbers across the plan, usually in uniform lines.

The series also contains a small number of plans depicting port infrastructure and equipment.

The maps depict waterways throughout Victoria, but most commonly Westernport Bay, the West and South Channels in Port Phillip Bay, Port of Geelong and Queenscliff. Dredging locations and dredging spoil dumps are also commonly represented in the series.

Within the series there are sequences of soundings of the same area taken regularly over months or years, documenting any change in sea depths. There are also a large number of plans that depict both pre- and post-dredging surveys conducted as a part of dredging projects. Some plans depict cross sections of the water and sea floor. Many of the plans also depict locations of marine infrastructure such as lighthouses and buoys.

Given the creating agencies and the marine survey functions documented in this series, it is likely a subsequent series to VPRS 18782 Hydrographic Survey Plans, although this is subject to further research.

Plans in this series can be identified by location, which is described in the title of each plan, as well as the plan number. The title descriptions were taken directly from information on the plans. The dates listed for each plan indicate the date the survey was conducted, which is often a date range, as well as the date that the plan was approved.

Before coming into PROV custody, this series was held for a number of years at the Queenscliffe Maritime Museum.