Description: Oklahoma Dam Inventory (ODI) - Dam Locations The OWRB coordinates the Oklahoma Dam Safety Program to ensure the safety of more than 4,500 dams in the state, especially those that could impact downstream life and property. The program requires inspections every five and three years for low and significant hazard structures, respectively. It requires annual inspection of the state's 165 high-hazard dams, so designated due to the presence of occupied dwellings immediately downstream. Because many of these dams are very old structures that need periodic repair, the Water Board requires submittal and subsequent approval of plans and specifications prior to dam modifications. Staff also coordinate periodic training sessions and workshops on dam safety issues and regulations for dam owners and engineers. The Natural Resource Conservation Service offers technical assistance in the construction of small farm ponds and related structures. In addition, owners of dams classified as "high hazard" are required to provide an adequate warning system and evacuation plan to protect downstream lives and property. A written Emergency Action Plan must be submitted to and approved by local Civil Defense authorities, then filed with the Water Resources Board.