Groundwater - Groundwater level
21 important questions on Groundwater - Groundwater level
What is the capillary fringe?
What is a synonym for groundwater table?
How works a piezometer?
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Which two components does the hydraulic head of a piezometer consist of?
-Elevation head (z in m)
-pressure head (h in m)
Formula: H = z+h
How compares the pressure head to atmospheric pressure?
What are dredged ditches?
Why is the hydraulic head the same everywhere in the piezometer?
- pressure head increases
- elevation head decreases
What is a gully
What happens in summer with the flow direction of groundwater and the groundwater level?
What is the definition of hydromorphic characteristics?
Why are groundwater level classes used?
For nature conservation purposes an additional level is used: average sprig groundwater level (ASG)
What causes (upward) seepage?
When is the pressure head zero?
Why does the presence of peat indicate wet conditions during the soil formation?
What parts of the soil are always saturated with water?
What tells the distance between drainage networks about the groundwater level?
If the distance betweeen ditches is small, the groudwater levels are high.
What are the head characteristics of the heads at the groundwater table?
What happens when the groundwater level drops in a peat field?
What is the main force behind groundwater flow?
It leads to an evaporation of water at one location while precipitation is formed and falls at another location. These cause differences in hydraulic head, which in turn causes groundwater flow. Hydraulic resistance affects flow but doesn't cause it, differences in land surface level don't affect the groundwater table, unless it drops deep enough for plant roots to extract water or groundwater surfaces and a channel is formed/constructed to discharge the waters. Seasonal changes cause temporal differences in hydraulic head but this does not cause flow since water flows in space and not in time.
What is able to permeate the filter of the piezometer
What are HG3 and LG3?
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