Scotts Flat Spillway in Nevada City, California, is a concrete gravity dam primarily used for fire protection, stock, and small fish pond purposes. Managed by a public utility, the dam stands at a height of 55 feet and has a storage capacity of 49,000 acre-feet. The spillway, categorized as uncontrolled, has a maximum discharge of 28,000 cubic feet per second and is located on Deer Creek.

The dam is regulated by the California Department of Water Resources (DWR) under the Safety of Dams program and is subject to regular inspections to ensure its structural integrity. With a high hazard potential, the spillway poses risks that are mitigated through emergency action plans and risk assessment measures. The Federal Energy Regulatory Commission oversees the dam's operations, inspections, and regulatory compliance to ensure safety and efficiency in its functioning.

Scotts Flat Spillway serves as a critical water resource infrastructure in the region, providing essential services for fire protection, irrigation, and hydroelectric power generation. With its strategic location and significant storage capacity, the dam plays a crucial role in managing water resources and ensuring water supply reliability for the surrounding communities. As a key component of the local water management system, the spillway contributes to the overall resilience of the region in the face of changing climate conditions and water resource challenges.