Dierickx is a privately owned irrigation dam located in Hillsboro, Oregon, along Dairy Creek, a tributary to the Tualatin River. Built in 1980, the earth dam stands at a height of 20.5 feet and has a storage capacity of 50 acre-feet, serving the primary purpose of irrigation. With a significant hazard potential and a drainage area of 0.33 square miles, Dierickx plays a crucial role in water resource management in the region.

Managed by the Oregon Water Resources Department, Dierickx undergoes regular state inspections, enforcement, and permitting to ensure its safe operation. The dam has a maximum discharge capacity of 437 cubic feet per second and a surface area of 6.8 acres. Its last inspection was conducted in September 2020, with a scheduled inspection frequency of 3 years. Despite being labeled as "Not Rated" in terms of condition assessment, Dierickx remains a vital infrastructure for water supply and agricultural activities in the area.

Located within the jurisdiction of Washington and Oregon counties, Dierickx is regulated by the Oregon Water Resources Department and designed by the Natural Resources Conservation Service. With its strategic location and critical role in irrigation, the dam serves as a key component of the region's water management infrastructure. As climate change continues to impact water resources, Dierickx stands as a testament to the importance of sustainable water management practices in ensuring a resilient and secure water supply for the future.