The Historical Watershed Boundary Maps consists of the watersheds printed colour maps within Alberta that were delineated as part of the Phase 3 Forest Inventory program. The maps have been scanned in black and white as well as colour. This product can be viewed on a computer, printed or plotted in part or in whole. All available maps are provided in Adobe PDF and Tif format sorted by the National Topographic System (NTS) 1:50 000 and 1:250 000 blocks within downloadable WinZip files. This series is not updated and contains a range of publication dates and scales. Approximately 2/3 of the series is currently available. the rest of the Historical Watershed Boundary Maps are missing. These will be scanned and added to the collection if they become available. These maps are not available as geo-referenced rectified images or GIS-ready data.