8 pp., 11 photos, 4 tables, 2 graphs, 1 worksheetResearch using cattle fitted with GPS collars has shed light on how cattle behave in response to different landscape features such as brush, rock cover, slope, water, forage and grazing land accessibility. This publication explains how to use aerial maps and ecological site descriptions, in combination with ground inventories, to determine how much actual acreage is available for cattle to graze. This can help producers with difficult stocking decisions