Estimating Consumptive Use
In order to determine return flows or non-consumptive use, the portion of an exercised water right that is returned to the source after use, the portion that does not reach the water source must be calculated as the Consumptive Use. StateCU is the approved method for determining both crop and non-crop consumptive use in Colorado. The Colorado Division of Water Resources has prepared a State CU Quick Start Guide to assist new users with the StateCU model. No matter what method you use to calculate Crop Historical Consumptive Use, make sure to review the Best Practices for Determining Crop Historical Consumptive Use to improve the validity of your results.