Tbd County Road 3365 Investment potential only one mile from the shores Lake Ralph Hall. Lake Ralph Hall is one of Texas’ newest lakes and is under construction on the North Sulphur River in Southeast Fannin County. Once completed, Lake Ralph Hall will provide a host of recreational opportunities and environmental benefits. When the lake is filled and open to the public, it will offer a whole host of new opportunities, including fishing, boating, nature viewing and the nearby fossil park, which is one of Ladonia's most popular and visited sites. The new commercial opportunities will draw locals and visitor alike. The lake will provide crucial water for an area whose population is projected to increase in the next 50 years. Another aspect of Lake Ralph Hall is that this lake could turn into one of the deepest lakes in North Texas. The 300-feet wide, 60-feet deep channel could benefit the lake by resulting in increased water storage coupled with less evaporative loss, creating a fisherman's paradise.