Reservoir characterization of the Haygood Limestone (Ferry Lake Anhydrite, Early Cretaceous) at Caddo-Pine Island field in Caddo Parish, Louisiana, has enhanced the design of a proposed waterflood recovery program. Analyses to evaluate reservoir geology, formation injectivity, porosity types and pore size distributions include conventional core description, thin section petrography, X-ray diffraction, X-ray computed tomography (CT), and petrographic and scanning electron image analysis (PIA and SEM-IA).