Resource pool depletion information, including the estimated time until the resource pool is depleted, is derived from resource pool data. Data regarding the size of a resource pool is collected over a period of time. The data may include the resource pool size and other information. One or more functions are then generated to fit one or more sets of data within the collected resource pool data. The best fitting function is selected from the generated functions and used to determine the time at which the particular resource pool will become depleted. Values for the selected function can be generated at future points in time to determine the depletion point of the resource pool. The time information as well as depletion confidence values are provided to a user or otherwise processed.