411774703C736F42E0632144CD9B500DEnglishData Requests OfficerDepartment of Lands, Planning and EnvironmentGeospatial Services Unit (on behalf of department)Datarequests.DLPE@nt.gov.au2026-03-13AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile1.0 The Land Resources of Larapinta Valley and the Undoolya Area, Alice Springs2025-10-14This polygon spatial data set provides information on the land unit boundaries of the Eastern Sector of the Larapinta Valley and Undoolya area of Alice Springs in the Northern Territory, and describes dominant landform, soils and vegetation of the area. The Larapinta Valley survey area encompasses 10.8km2 and is located immediately to the west of Alice Springs. The Undoolya survey area encompasses 25km2 and is located 5km to the east of Alice Springs. The original field survey was undertaken in 1978, and was completed at a mapping scale of 1:10,000. Core attributes describing the land units, as defined by the department, were added to the spatial data set in October of 2025.Standard access notes Download the spatial data package via https://ftp-dlrm.nt.gov.au/main.html?download&weblink=f7913d594bcec1bd16d693079068368d&realfilename=LandUnits_larun_10.zip You are licensed to use this publication 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 this publication. 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 Lands, Planning and Environment. Copyright Northern Territory GovernmentEnglish-23.726582-23.674666133.811122133.9787312025-10-14datasetnot knownCompleted0not 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 Hardcopy maps rectified using control points marked on original hardcopy maps. Control points include creek lines, cadastre and other topographic features. Depending on the nature of the landscape (the number of control points) positional accuracy may vary. Positional accuracy generally considered moderate. POINT DATA Survey teams navigated during field operations with topographic maps, aerial photographs and prismatic compass. Point source locations marked on aerial photography in the field. Positional accuracy considered within 300m but generally below 200m depending on the terrain. Site coordinates derived by transferring site locations from aerial photographs to topographic maps and coordinates calculated. In some cases, sites have been georeferenced directly from aerial photography to Google Earth Web Map Server in ArcGIS.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.0Original map unit boundaries are delineated from aerial photographs and stereoscope interpretation. Map units transferred to clean dyeline sheets via a mapograph. Original maps were hardcopy only. With the advent of geographic information systems, polygons were digitised by georeferencing the original hard copy maps. Original map unit boundaries derived using hard copy aerial photography and stereoscope geological and topographic maps. Field data (site data) described and classified according to national standards at the time of capture. Map unit polygons collected via geographic information system (ESRI ArcGIS). Core landform, soil and vegetation attributes attached to map units with additional attributes unique to individual surveys.