What may be happening?
Check gutters and downspouts from the ground and note whether the surrounding soil slopes toward the building. Do not assume that one buried pipe addresses every source.
Do not diagnose the property from one puddle or photograph. Note the timing, direction of flow, nearby downspouts and recent changes to landscaping or paving.

Why does it keep happening?
Water follows the available grade until it reaches a low point or obstruction. Slow-draining soil can keep an area wet after surface runoff has stopped. Existing pipes or outlets can also be blocked, damaged or set at the wrong elevation.
Which solutions may help?
Downspout Drainage
Roof runoff washing mulch, pooling beside a house or crossing a walkway.
Yard Grading
Low areas, poor slopes and runoff traveling toward structures or hard surfaces.
Yard Drainage
Standing water, soggy ground, runoff and recurring low spots.
When should the property be assessed?
Arrange an assessment when the problem returns after rain, affects normal yard use, causes erosion or collects close to a structure. The assessment should connect the visible symptom to a source, route and outlet.