What Is A Water Table On House

What Is a Water Table On House?

A water table is the upper surface of the groundwater in an unconfined aquifer. It is the level at which water pressure is equal to atmospheric pressure. The water table can fluctuate in response to changes in precipitation, evaporation, and other factors. In a house, the water table can have a significant impact on the foundation. If the water table is too high, it can cause the foundation to settle or crack. This can lead to a variety of problems, including structural damage, flooding, and mold growth.

There are a number of factors that affect the water table below a house, including:

* Precipitation: The amount of precipitation that falls in an area can affect the water table. Heavy rainfall can raise the water table, while drought conditions can lower it. * Evaporation: Evaporation from the ground and from plants can also affect the water table. High evaporation rates can lower the water table, while low evaporation rates can raise it. * Groundwater flow: The flow of groundwater can also affect the water table. Groundwater flows from areas of high pressure to areas of low pressure. If the water table is higher in one area than it is in another, groundwater will flow from the higher area to the lower area. * Soil type: The type of soil in an area can also affect the water table. Sandy soils allow water to drain more easily than clay soils. This means that sandy soils typically have lower water tables than clay soils.

If you are concerned about the water table below your house, you should have a geotechnical engineer evaluate the situation. The geotechnical engineer will be able to assess the risk of foundation problems and recommend ways to mitigate the risk.

In some cases, it may be necessary to install a sump pump to lower the water table below a house. A sump pump is a device that pumps water out of a basement or crawlspace. Sump pumps are typically installed in areas where the water table is high or where there is a risk of flooding.

By understanding the factors that affect the water table below your house, you can take steps to protect your foundation from damage.