The Two Water Magic Tricks: Getting It Into the Soil and Keeping It There For much of my career, I’ve thought about two water problems as magic tricks: getting water into the soil and keeping it there. They sound simple. Turn on the sprinklers, water the lawn, and let the soil do its job. But a surprising amount of irrigation never reaches the roots in a useful way. Some water is lost to evaporation and wind. Some runs across the surface, pools in low spots, or moves below the root zone. And sometimes the soil is so compacted that water struggles to get in at all. A water bill tells you how much water passed through the meter. It doesn’t tell you how much reached the roots. You can spend hundreds of dollars watering a lawn and still lose much of that water to poor timing, poor coverage, runoff, or soil that cannot hold the moisture your grass needs. Magic trick number one: Get water into the soil Many lawns are watered by habit: the timer runs for the same number of minutes on the same days, whether the weather, soil, or grass needs it or not. Sprinkler heads may be misaligned, blocked, or unevenly spaced. A long cycle can put water down faster than the soil can absorb it, sending it onto a sidewalk or driveway. The soil itself can make the problem worse. Compaction reduces the larger pore spaces that allow air and water to move through the ground. Roots need those spaces, too. Along the Front Range, compacted and clayey soils can make it harder for water to infiltrate and for roots to grow deeply. CSU Extension Healthy soil structure develops as roots and soil organisms interact with organic matter. Microorganisms help bind small soil particles into aggregates. Those aggregates create a network of spaces where water can enter and move, and where roots can grow. It takes ongoing care; one quick treatment cannot build lasting soil structure overnight. CSU Extension