When a January storm finally reaches San Diego, it rarely arrives gently: rain sweeps in off the Pacific in gray sheets, and Tecolote Canyon gathers the runoff of the Clairemont mesas and hurries it toward Mission Bay. That is the night drainage stops being an abstraction, when water hunts for the low corner by the garage or sits on clay soil that drinks it slowly. Advanced Sprinkler & Drainage Repair works on both halves of this city's water story: drainage repair for the wet weeks, and sprinkler repair for the long dry stretch that follows. A clogged line cleared, a head that waters the grass instead of the sidewalk, a yard that sheds a downpour and greens up again by spring — this is the satisfying, unglamorous work of making water go where it should. In a place that can count its rainy days, every drop deserves a good route.