Hi just wondering if any knows if contour reports can ever get it wrong, maybe equipment not working properly ?
reason been, the builders are telling me i have to raise my house by 1.8m which is so extreme, because contour report came back with 47m ADH and the 100yr flood level is 49 ADH
but my goggle and my self using an expensive snowboarding watch with altitude function both came back with 50m ADH
so iam just wondering if the equipment can ever be wrong or the report could be wrong, thanks