Storm & Flood Damage Recovery in Hendersonville, TN

On karst, usually from somewhere you cannot see. Limestone here has solution channels that carry water underground along paths that follow the rock rather than the surface topography. Rain that fell well uphill, or on another property entirely, can arrive at your foundation with nothing visible in between. That is why surface grading sometimes makes no difference here, and why interception at the wall, with a drain and a sump, is often the practical answer.

For properties near the shoreline, it can. Reservoir levels influence the local groundwater elevation, and a basement cut close to that elevation may be dry at one pool stage and wet at another. It is worth noting the lake level alongside rainfall when water appears, because a pattern that seems to have nothing to do with storms often correlates with pool stage instead. That distinction changes what kind of remedy makes sense.

No, but on this bedrock it is not unusual and it is not always a construction failure. Excavating into limestone can open or connect solution features, creating a path that did not previously deliver water to that spot. A new house may therefore have a genuine water problem despite correct construction. That does not make it acceptable, but it does mean the investigation should look at the rock around the excavation rather than assuming poor workmanship.