Abstract: Methods and tool are provided for managing rangeland in a consistent, repeatable and quantitative manner. A geospatial model of the land is created and used to select forage analysis targets and forage analysis routes within the land. Then, forage observation locations are determined from the forage analysis targets. Forage and area limiting attributes are then determined and applied to each forage observation location, and a representative extent of land is associated with each forage observation location. An amount of forage at each forage observation location is measured, and forage inventory is calculated based on the measured forage and relative spatial extent of land associated with each forage observation location. Land use policy may then be established, for grazing, hunting, recreation, and other uses.