Lake Murphy is a shallow lake located in Iberville Parish, Louisiana, close to Bayou Sorrel. The lake's hydrology is primarily influenced by the Atchafalaya River and the Bayou Sorrel Canal. The Atchafalaya River provides the majority of the surface flow while the Bayou Sorrel Canal provides a secondary source of water. The lake's water level is also affected by precipitation, with snowpack providing a significant contribution during the winter months. In terms of history, the lake was created in the mid-20th century as part of a flood control project. Today, Lake Murphy is used primarily for agricultural purposes, such as rice farming, and fishing. Recreational activities are limited due to the lake's shallow depth and lack of amenities.