Technical Abstract: Evaluations made through assessment and monitoring provide information about the functional status of the soil-plant system. Soil Survey can support assessment and monitoring activities of land managers by providing data to serve as standards or reference values using an objective-based approach for selection. The properties/indicators chosen should reflect the processes and functions to be assessed or monitored and the scale (e.g., management unit, ranch, watershed, eco-region, national) at which the information is needed. Good indicators are strongly related to the function and scale of interest, sensitive to change, compatible with time and resource availability and technical expertise, and relatively easy to observe or measure in a reliable manner.