Oro Blanco is a private fish and wildlife pond located in Santa Cruz, Arizona, specifically in the city of ARIVACA. Managed by the ARIZONA DEPARTMENT OF WATER RESOURCES, this earth dam was completed in 1950 and serves multiple purposes including fire protection, stock, small fish pond, and fish and wildlife conservation. With a capacity of 67 acre-feet, Oro Blanco covers a surface area of 12 acres and has a drainage area of 3.6 square miles.

The dam stands at a height of 18 feet and spans a length of 762 feet, with an uncontrolled spillway measuring 134 feet in width. Despite being assessed as having low hazard potential and a moderate risk level, Oro Blanco has not been rated for its condition. It is inspected every 5 years, with the last inspection taking place in April 2012. The dam is designed to meet the needs of fish and wildlife in the area, providing a vital resource for the ecosystem.

Water resource and climate enthusiasts will be intrigued by Oro Blanco's role in maintaining the local environment and supporting biodiversity. Its location in the Oro Blanco Wash, along with its low hazard potential and moderate risk assessment, make it a noteworthy structure in the region. With its primary purpose being the conservation of fish and wildlife, Oro Blanco serves as a valuable asset for both the ecosystem and the community it resides in.