Attachment D -Hickory 14 Repair.pdf

These engineering design documents detail the Hickory Creek Watershed Floodwater Retarding Structure Site 14 in Denton County, Texas, prepared by the USDA Natural Resources Conservation Service. The project involves repairing a flood control structure with specific technical specifications, including a dam with a controlled drainage area of 2.89 square miles, total storage of 1,047 acre-feet, and an overall dam height of approximately 28 feet. The design includes detailed plans for rock riprap wave berm repairs, a plunge basin, geotextile fabric placement, earthwork, and fence reconstruction, with comprehensive drawings showing plan views, elevation views, typical sections, and structural details such as gate openings and sediment control measures.

The project is sponsored by the Denton County Soil and Water Conservation District and Denton County Commissioners Court, with construction drawings approved for the 2025 fiscal year. The technical specifications provide precise engineering requirements for site preparation, excavation, rock placement, geotextile installation, and restoration of the surrounding landscape, including specific guidelines for rock riprap gradation, embankment reconstruction, and erosion control measures. Detailed plan and profile views illustrate the intricate design of the flood control structure, including precise elevation measurements, curve data, and structural components.