Little Valley in Idaho is a privately owned dam located on Little Valley Creek near Grays Lake. Built in 1897, this earth dam stands at a height of 22.7 feet and has a storage capacity of 1322 acre-feet. The dam serves multiple purposes, including flood control and irrigation, with a controlled spillway to manage water discharge.

Despite being classified as having a low hazard potential, Little Valley Dam has a fair condition assessment as of June 2018. The risk assessment for this structure is rated as very high, highlighting the importance of regular inspections and maintenance to ensure its safety and functionality. The dam is regulated by the Idaho Department of Water Resources and undergoes inspections every 5 years to uphold state regulatory standards.

Enthusiasts of water resources and climate in Bonneville, Idaho, can appreciate the historical significance and practical utility of Little Valley Dam. With its strategic location and purposeful design, this structure not only contributes to local water management but also serves as a reminder of the vital role dams play in sustaining ecosystems and supporting human activities in the region.