The ISC2010_STREAMBED_WIDTH polygon features represent the width between the Toe of each opposing bank for each River Reach. River condition in Victoria is assessed every 5 years using the Index of Stream Condition (ISC). The Department of Environment and Primary Industries (DEPI) developed a methodology to assess the Physical Form and Riparian Vegetation components of the ISC using remote sensing data, specifically LIDAR and aerial photography. A State Wide mapping project was undertaken in 2010-13 to accurately map the Physical Form and Riparian Vegetation metrics of the ISC . Other ISC metrics were not assessed in the project and were derived from other sources. The Physical Form and Riparian Vegetation Metric products are a combination of mapped Vector and Raster data as well as Tabular Summary Statistics about the mapped features. In the context of the project, the term Metrics is used to refer to both the mapped features and the summary statistics. Remote sensing data used includes 15cm true colour and infra-red aerial photography and four return multi-pulse LiDAR data. This source data was used to derive a variety of Raster data sets including Digital Terrain Models, Slope, Vegetation Height and Vegetation Cover. The Digital Terrain and Slope rasters were used to map Physical Form metrics including Stream Bed, Top of Bank and River Centre Lines while the Vegetation Height and Cover rasters were used to map the Riparian Vegetation metrics. The Project Report "Aerial Remote Sensing for Physical Channel Form and Riparian Vegetation Mapping" describes the remote sensing and mapping approach used to create this data set.

GEDIS REFID: 11117; SOURCE MAP: G11117_quartersheet_3SE_31k_400dpi_colour.tif; SUBJECT: TAYLOR, N., 1858. Quarter sheet 3 SE. Yan Yean (Portions of the parishes of Kal Kallo, Linton, Merriang, Toorourrong and Yan Yean) 1:31,680 (40 chains:1 inch) geological map. Geological Survey of Victoria.

GEDIS REFID: 11096; SOURCE MAP: G11096_quartersheet_23NE_31k_400dpi_colour.tif; SUBJECT: DAINTREE, R., 1863. Quarter sheet 23 NE. Portarlington (Portions of the parishes of Bellarine and Paywit; surveyed 1861) 1:31,680 (40 chains:1 inch) geological map. Geological Survey of Victoria.

GEDIS REFID: 10735; SOURCE MAP: G10735_geology_Casterton_63k_600dpi_colour.tif; SUBJECT: GEOLOGICAL SURVEY OF VICTORIA., 1967. Casterton 1:63,360 (1 mile:1 inch) geological map. Department of Mines, Victoria.

The Port Fairy Local Coastal Hazard Assessment (LCHA) provides information on the extent of coastal hazards and their physical impacts for the Port Fairy coastal environment. This data identifies areas which feature rocky cliffs in the coastal zone requiring further specific geotechnical investigation. Details of the assumptions made in the derivation of this information can be found in project reports on the Our Coast website: http://www.ourcoast.org.au/cb_pages/resources.php. Users of this information should read these project reports to understand the limitations of the data.

GEDIS REFID: 2559; SOURCE MAP: G2559_goldfield_Raywood_31k_200dpi_colour_georef.tif; SUBJECT: WHITELAW, H.S., 1904. Raywood Gold Field. Department of Mines and Water Supply, Victoria.

GEDIS REFID: 11101; SOURCE MAP: G11101_quartersheet_24SE_31k_400dpi_colour.tif; SUBJECT: DAINTREE, R., 1863. Quarter sheet 24 SE. Geelong (Portions of the parishes of Corio, Moorpanyal, Gherineghap and Barrarbool; surveyed 1861) 1:31,680 (40 chains:1 inch) geological map. Geological Survey of Victoria.

GEDIS REFID: 11169; SOURCE MAP: G11169_geology_Hamilton_250k_600dpi_colour_master.tif; SUBJECT: DOUGLAS, J.G., 1971. Hamilton 1:250,000 geological map. Department of Mines, Victoria.

GEDIS REFID: 10889; SOURCE MAP: G10889_parishplan_Binginwarri_31k_600dpi_colour_master.tif; SUBJECT: FERGUSON, W.H. & ALLAN, E.W., 1927. Parish of Binginwarri 1:31,680 (40 chains:1 inch) geological map. Plan No 14p. Geological Survey of Victoria.

GEDIS REFID: 10943; SOURCE MAP: G10943_parishplan_Gunyah-Gunyah_31k_600dpi_colour_master.tif; SUBJECT: FERGUSON, W.H., 1924. Parish of Gunyah Gunyah 1:31,680 (40 chains:1 inch) geological map. Plan No 68p. Geological Survey of Victoria.