Question

Use the drop-down menus to identify the labeled groundwater features.



Label A

Label B

Label C

Answer 1

I don’t see the diagram — could you upload the image or describe what each label is pointing at (e.g., “a horizontal wavy line near the top of the soil,” “a band of darker soil above bedrock,” “a cone-shaped depression around a well”)? Once I can see or read the labels I’ll pick the correct names.

While you get that to me, here are the most common groundwater features and how to recognize them so you can match them to the labels yourself:

- Water table (surface of groundwater): a wavy line separating the saturated zone below from the unsaturated zone above.
- Zone of saturation (phreatic zone): below the water table where pore spaces are filled with water.
- Zone of aeration (vadose zone): above the water table where pore spaces contain air and water.
- Capillary fringe: thin zone just above the water table where water is drawn up slightly by capillary action.
- Aquifer: a permeable rock or sediment layer that stores and transmits groundwater (usually shown as a thicker, permeable layer containing water).
- Aquitard / aquiclude: a low-permeability layer (clay, shale, unfractured rock) that restricts flow (often shown as a darker or solid layer).
- Confined aquifer: a saturated layer trapped between two aquitards, often shown under a confining layer; may show artesian pressure.
- Perched water table: a localized saturated zone above the regional water table resting on an impermeable layer.
- Well and water level: a vertical shaft showing the water level relative to the water table; pumping may show a cone of depression.
- Spring: where groundwater naturally flows out at the ground surface (often at slope breaks where impermeable layer meets surface).
- Recharge area: land surface where water infiltrates down to replenish an aquifer (usually upslope or at outcrops of permeable material).
- Discharge area: where groundwater exits to surface water (springs, baseflow to streams, wetlands).

Send the image or describe what each labeled arrow points to and I’ll give the exact names for A, B and C.