Spring Mountain Ranch Dam, also known as Lake Harriet, is a state-owned structure located in Las Vegas, Nevada. Built in 1945, this earth dam serves primarily for irrigation purposes, but also provides opportunities for recreation and water supply. With a height of 19 feet and a storage capacity of 22 acre-feet, the dam sits on the Blue Diamond Wash-TR, serving the surrounding area with essential water resources.

Despite its historical significance, Spring Mountain Ranch Dam has faced challenges in recent years. Classified as having a high hazard potential and poor condition assessment, the dam underwent hydraulic and structural modifications in 1978. Its spillway type is uncontrolled, with a maximum discharge capacity of 650 cubic feet per second. The dam's last inspection in February 2022 revealed the need for ongoing maintenance and risk management measures to ensure its safety and longevity for the community.

In the realm of water resource and climate enthusiasts, Spring Mountain Ranch Dam presents a case study of the intersection between infrastructure, environmental stewardship, and public safety. As Nevada's Department of Water Resources oversees its regulation and enforcement, stakeholders are tasked with addressing the dam's maintenance needs and risk assessment to protect both the surrounding ecosystem and the residents who rely on its water supply. With a moderate risk assessment rating and a history of modifications, the dam serves as a reminder of the ongoing challenges in managing and maintaining critical water infrastructure in the face of changing climatic conditions.