Gunnison Tunnel will be shut down October 31, 2023.
This project includes over 83,000 acres of land located in Montrose and Delta counties. It surrounds the cities of Montrose, Delta and the town of Olathe for 34 miles along both sides of the Uncompahgre River.
The irrigation water for this project is diverted from the rivers into a network of canals and laterals. It includes 128 miles of major canals, 438 miles of laterals and 216 miles of drains.
The laterals carry the irrigation water to each headgate. At the headgate the water enters private ditches and facilities operated by the landowners. After use, the tail water flows away from the property into laterals to be reused and into drains. The water in the drains supports the groundwater table of the valley and eventually return back into the rivers.