Add data
To compare various development proposals we'll use a blend of open data and Esri curated data. To give you a head start, we've enhanced the relevant Ordnance Survey Open Map Local Vector data (we used grid squares SH for the Dolgellau, Wales area). Download the shapefile and add it to your ArcGIS Online Content. You'll also use Ordnance Survey's Open Greenspace data, but this is available directly in the ArcGIS Living Atlas, an Esri curated data repository, accessible through ArcGIS Online