5CCDFAF6C7631BC9E050CD9B214445EDEnglishData Requests OfficerDepartment of Lands, Planning and EnvironmentGeospatial Services Unit (on behalf of department)Datarequests.DLPE@nt.gov.au2020-06-17AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile1.0Soil and Land Capability Assessment of the Lower Weaber and Keep River Plains, NT. Section 1: Lower Weaber and Upper Keep. 2020-06-05Department Survey Code (Land Units): WEA18_25 This spatial dataset provides polygon information delineating land unit boundaries mapped at a scale of 1:25 000 and describes the soils, vegetation and land capability of the Lower Weaber and Upper Keep Plains in the Northern Territory. The study area, Section 1, covers 67 km2 and is located in the north-west Ord-Victoria River region of the Northern Territory within the Spirit Hills pastoral lease. The investigation has assessed land based constraints and determined land capability outcomes for potential future agricultural development. It incorporates both collated legacy data published in Aldrick and Moody (1977) and new analytical soil data collected in 2018, in combination with analysis of high resolution aerial imagery to generate reliable land capability outcomes. CAUTION: Map unit boundaries were derived using satellite imagery in association with a digital elevation model, geological and topographic data. Field assessments conform to national standards and support mapping at a scale of 1:25000. When assessing specific areas within the mapping it is recommended a site inspection is undertaken to establish unmapped variation and confirm mapping accuracy on the ground.Download the spatial data package (contains spatial data, maps and reports) via https://data.nt.gov.au/ You are licensed to use the DENR geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: https://creativecommons.org/licenses/by/4.0/legalcode If you do not agree to the terms and conditions you must not use the geospatial products. You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement: Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.English-15.4901071429999-15.3948849379999129.000481627129.0749101492020-01-172020-06-04datasetnot knownComplete0not knownGIS editing tools were used to rectify all overshoots and undershoots in line work. Polygon topology rules applied are; must not overlap, must not have gaps and each polygon has only one label.0not knownPOLYGON DATA Map unit boundaries digitised on screen directly from digital rectified field maps. Level of accuracy depends on the number of control points on individual map sheets. Control points exclusively used Map Grid of Australia (MGA) grid lines. Depending on the nature of the landscape (the number of control points), positional accuracy may vary. Positional accuracy generally considered high to very high. POINT DATA Site point coordinates derived from a geographic positioning system with general accuracy of within 10-50m.0not knownThe attribute information conforms to the Australian Soil and Land Survey Field Handbook at time of capture. Attributes assigned according to the dominant feature. For example, where ten sites have been grouped to describe a particular map unit and two different soils described from these sites then the dominant soil is chosen. The department has assigned a list of core attribute values, described in the Data Dictionary below, to each polygon. The attribute naming format uses 10 characters with no spaces to be suitable for an ESRI shape-file format. An alias attribute name is applied to an ESRI file geo-database format. LAND EVALUATION: Each land unit has also been assessed for GENERAL LAND CAPABILITY, evaluating landscape characteristics that could influence the general use of the land. Descriptions for key characteristics considered important have been added to the land unit polygon, including slope, surface rock, soil depth, soil drainage, flooding, salinity, sodicity, microrelief and acid sulfate soils. For detailed information about General Land Capability review the Land Evaluation chapter in the accompanying report. (See Supplementary Information in this metadata record)0- Pre-existing mapping in the Lower Keep (Aldrick & Moody, 1977) was reviewed. Land units were re-evaluated using current technologies and analysis of high resolution aerial imagery and redrawn to a mapping scale of 1:25 000. - 77 new fields sites were described in detail for landform, soil and vegetation characteristics, and to collect soil samples for laboratory analysis. Map unit boundaries were derived using high-resolution digital aerial photography (2012), digital satellite imagery, DEM, geological and topographic data. Field data (site information) was described and classified according to national standards at the time of capture. Map unit polygons were collected via geographic information system (ArcGIS). Core landform, soil and vegetation attributes attached to map units with additional attributes unique to individual surveys.