this post was submitted on 01 Jun 2024
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Extreme drought makes the issue worse, when the surface is too dry it does not absorb water quickly, meaning you get more runoff. If feels counter intuitive, but it's true.
You might have noticed this when watering a completely dried out plant. The water stays on the surface of the soil longer.
Not quite correct, if I remember correctly dry soil adsorbs more water and quicker (by default) than waterlogged soil. But when is been dry for a long time a hydrophobic film forms, causing a temporary delay in water adsorption. I think it can impact flash flooding, but it washes off fairly quickly and then adsorption returns to expected.