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1. Vegetation
2. Rate of Precipitation
3. Soil Composition
4. Slope
5. Precipitation

• Soils that have vegetation will have more pores (space) in the soil which allows more water to soak in (via root systems) than soil with no vegetation.
• Vegetation slows down surface runoff by increasing friction.

• If the rate of precipitation is greater than the rate of infiltration, runoff is produced
• A hard, fast downpour will result in more runoff than a gentle, longer rain.

• Soils with a lot of organic material can hold more water than other soils.
• Soils that are more compact will allow less water to pass and hold less.

• Water from precipitation falling on slopes flows to areas of lower elevation.
• The steeper the slope, the faster the water flows, the greater the erosion.
• In areas with steeo slopes, little water seeos into the ground before it runs off.

• Rain
• Snow
• Sleet
• Hail
• Freezing Rain

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