Poor drainage allows moisture to leak through cracks which places pressure on a foundation. It can enlarge existing cracks and create new cracks.

However, identifying causes of poor drainage can be difficult. It is helpful to call an expert to help you identify potential drainage problems from rain runoff, sprinklers, supersaturated soil, underground springs or a high water table.

Watch how quickly rainwater soaks into the ground. It should not puddle or create runoff. Consider adding dirt or improving clay or silt soil with organic matter.

Examine the yard's slope. It should drop six inches in the first 10 feet from a structure and at least one foot per 100 feet beyond that. The slope should be gentle enough to allow gravity to move excess rain toward the street while letting some water be absorbed into the soil.

Watch for runoff from the street, other homes, hills, patios and play areas. It should not drain oward a home. A yard should effectively divert water at least 20 feet from the house.

Gutters should be free of debris, in good condition and should slope toward a downspout. Downspouts should carry water at least 10 feet from a home. A splash guard might be needed where water exits to absorb forceful energy used to create gullies in the yard.