Ah, the classic patchy lawn mystery! When some areas are dry while others seem soggy or overwatered, it’s usually due to uneven coverage or differences in soil, slope, or sun exposure. Here’s a breakdown of possible culprits:

Sprinkler Coverage Issues

Clogged or broken heads — water isn’t reaching certain spots

Mismatched nozzles — some areas get more water than others

Low water pressure — zones at the end of the line might suffer

Blocked spray — by plants, fences, or even lawn furniture

Fix it: Check all sprinkler heads while running, clear blockages, and make sure they’re adjusted correctly (spray direction & range).

Soil Differences

Sandy spots dry out faster

Clay-heavy areas hold too much water

Compacted soil (especially from foot traffic or machinery) resists water penetration

Fix it: Aerate compacted areas, amend soil if needed, or adjust watering durations per zone if your controller allows.

Terrain / Slope

Water runs off hilly spots before it can soak in

Low spots collect water, leading to overwatering or soggy soil

Fix it: Water slopes in short cycles (e.g., water 5 mins, rest 30, repeat), and consider grading or drainage solutions if it’s a big issue.

Sun & Shade

Sunny areas dry out faster

Shaded spots hold moisture longer

Fix it: Adjust zone timing if you can, or water sunnier areas a bit longer.