Science · 6 pages · 12 min
Why a spring appears on a hillside
A spring is groundwater reaching daylight where a slope cuts a saturated layer.
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From the opening
A spring appears where the water table, or a saturated layer inside the hill, intersects the land surface so groundwater can leave the ground. The hillside is the place that underground water is given an exit. The opening covers where the water table meets the slope, why a spring line follows a contact, and how a road cut makes a seep.
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Inside
- Where the water table meets the slope
- Why a spring line follows a contact
- How a road cut makes a seep
- When a wet patch is only rain
- Where the idea stops applying
- A distinction worth keeping
Sources
- A water table intersecting the land surface
- Perched groundwater along a less permeable contact