• Bear Creek Dam
• Hackberry Draw Spillway
• Marrowbone Dam
• Paddy Creek Dam
• Sallisaw Watershed Spillway
• Saluda Dam
• Taum Sauk Dam Upper Reservoir
• Thompson Creek Molybdenum Mine
• Mt. St. Helens Sediment Retention Structure Spillway Elevation Project

Hackberry Draw Watershed Project

Carlsbad, New Mexico
Client: Natural Resources Conservation Service (NRCS)
Owner: Natural Resources Conservation Service (NRCS)

The Hackberry Draw Watershed Project includes two of four flood control dams in New Mexico. The dams, which were built in the 1960s, needed to be brought up to current safety standards to protect lives and property downstream. Local watershed sponsors and the USDA Natural Resources Conservation Service completed surveys of the dams and their downstream channel, and developed a flood plain map for 100-year and breach inundation storms. These dams were then rehabilitated to meet current safety standards due to land use changes that occurred in the area.

Members of the Fall Line staff served as the RCC Consultant on the project, providing Quality Assurance services for the on-site laboratory including the RCC plant qualifications, the test section phase, and construction of the emergency spillway. Fall Line staff members trained the on-site testing personnel and assisted the NRCS and the contractor in matters concerning the construability and quality of the project. Tests were performed to determine compressive strength of the RCC, moisture content of the aggregates and the RCC and density of the in-place compacted RCC.