Data for novel subsurface slopes hazardous mapping with engineering geologic and geophysical characterizations

the research work applied the capability of engineering geological evaluation of the subsurface lithologic units to map the hazardous materials within the study area, with the integrated borehole characterizations. The electrical resistivity method deployed for the study is faster and cost effective. The study is significant to the discontinuation, and prevention, of potential environmental hazards and threats, to human lives, the ecosystem, and infrastructural facilities around the study sites, owing to the higher hazardous slopes’ ratings recorded. Slope mass ratings (SMR), and Rock Quality Designation (RQD), were carried out, which help with the construction of suitability, and slope assessment system (SAS) model ratings map of the study area. Generally, the mapped study area consisted of approximately 18.96 acres of land, i.e., (26.78%), of recorded slopes up to 5°. About 2.84 acres, i.e., (4.01%), of the study area has recorded slope of between 5° – 15°. Moderate slope gradient of between > 15° and 25° which covered about 2.23 acres, e.g., (3.16%). For slope gradient > 25° – 35°, it covered approximately 20.81 acres, e.g., (29.40%), whereas slope gradient > 35° - 60° covered about 17.78 acres, e.g., (25.12%). For recorded slope gradient > 60°, it covered about 8.16 acres, i.e., (11.53%).