Van Orden
May 2, 2024
Van Orden is a privately owned irrigation structure located in Franklin, Idaho, with a low hazard potential and a fair condition assessment. Built in 1961 by the USDA NRCS, this earth dam on Worm Creek and Cub River stands at 22.5 feet high and has a storage capacity of 64 acre-feet. The dam serves the primary purpose of irrigation, supporting a drainage area of 53 square miles and a maximum discharge of 154 cubic feet per second.
Although Van Orden has a controlled spillway and is regulated by the Idaho Department of Water Resources, it has not been modified in recent years and lacks emergency action plans and inundation maps. Despite these shortcomings, the dam is inspected every five years and remains in a fair condition, meeting state inspection and enforcement requirements. With a very high risk assessment rating of 1, there is a need for improved risk management measures to ensure the safety and integrity of this important water resource infrastructure in Idaho.
| Year_Completed | 1961 |
| Dam_Height | 22.5 |
| River_Or_Stream | WORM CREEK CUB RIVER |
| Dam_Length | 235 |
| Surface_Area | 10 |
| Hydraulic_Height | 15.8 |
| Drainage_Area | 53 |
| Nid_Storage | 64 |
| Hazard_Potential | Low |
| Foundations | Rock, Soil |
| Nid_Height | 23 |
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