Heavy storms can send water across hard ground faster than it can soak in
In Tye, dry ground compacts and sheds a hard rain instead of taking it in evenly. Water then follows the slope of the yard, collects in low spots, and can remain near the foundation while other parts of the lot dry out. A visible puddle is often only where that water stops, not where the drainage problem begins.
A useful drainage plan follows the actual grade, roof discharge, low areas, and a route to an intended outlet. Putting a drain at the puddle without considering where its water will go can send runoff back toward the structure, wash soil away at the discharge point, or leave the line in a place where sediment settles and stays.
Drain lines need enough fall to keep collected water moving. Outdoor inlets also need points that can be reached for clearing, since windblown debris and soil get into them over time. We look at the full route so the drainage work directs water away rather than simply moving the pooling point elsewhere.