Water Rights Accounting Program
The water rights accounting program is a set of computational tools that the watermaster uses to quantify natural flow available, natural flow use, and storage use on a daily, after-the-fact basis. The water rights accounting computes the natural flow available using streamflow, reservoir, and diversion measurements. Based on the natural flow available, the water rights accounting determines which water rights are in priority.
In Idaho, the following water districts use water rights accounting:
The storage program is a separate program from the water rights accounting. There are individual storage programs for Upper Snake, Boise, and Payette reservoir systems. The purpose of the storage program is to allocate storage water to the individual spaceholders according to the federal contracts and USBR instructions. IDWR runs the storage program and USBR reviews and approves the output (storage report).