The boundary survey

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When preparing the land survey, surveyors should collect data about the following features, where relevant: roads tracks paths walls (with width, height and description of materials) fences (with width, height and type) buildings (by external footprint) ground surface changes hedges (by trunkline) trees (with trunk diameter, height and canopy) bushes and shrubs (by extent) ditches (by width and depth) streams and rivers...