Questions tagged [underground-water]

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How are aquifers found and traced?

Recently a line from a news article about an aquifer in the path of a tunnel boring machine for Metro networks caught my attention: Ahead of tunnelling, the builders conduct hydrogeology, a study ...
7
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1answer
36 views

Would the subsurface event leading to tree death at West Tern Lake in Yellowstone be visible in thermal imaging?

The New York Times article It’s Warm and Stealthy, and It Killed Yellowstone Trees and Turned Soil Pale describes an even that took place over the past few decades where a small and well-defined ...
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1answer
55 views

How acidic waters make rocks disappear?

I was working on this science project. I was on step 11, day. 4. Since day 2, I found out that my pH and the mass of the rock (limestone) stopped changing. This project should proves acidic water ...
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1answer
139 views

What is the cause of temporary smell and black color of underground water?

We have a well (about 1200KM away from sea and 60 meter deep), the water when taken out has slightly dark color and has smell. But strangely in about 12 hours the smell and black color vanishes and ...
5
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3answers
89 views

Transferring water using underground channel

I heard in tv show, there are water channels in underground like rivers or small channels! So I just wondered why don't we use such underground water channels to recharge the underground water of one ...
1
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0answers
60 views

Easiest way to find the water table under my feet

I had burnt my finger by digging an empty well and spending my hard-earned money in vain. I then started to study about the resistivity method for finding underground details. But I have many doubts ...
4
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2answers
2k views

At what depth does the underground begin to warm up?

Spring water comes out colder from being underground. But if you get deeper the temperature goes up. At what depth does the underground stop getting colder and begins getting warmer? Is there a map ...
7
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2answers
157 views

How is ground water mapped?

This is probably a very easy question to answer but how are the USGS maps showing ground water locations mapped? Is it a guy going around taking core samples? Or is it done using satellites and ...
2
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0answers
70 views

Best material for Piezometer tube in water well

I have a 150M deep borehole. We want to measure ground water level using a pressure sensor. I believe that it is best practice to make use of a Piezometer tube ...
12
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1answer
6k views

How are giant sinkholes filled up?

There are a few impressive photographs of giant sinkholes that appeared in cities, such as this one: However, followup information (e.g. Guatemalan sinkhole) or photographs on how these kind of ...
10
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1answer
112 views

What are the most similar Earth analogues to Mars' seasonally recurring slope linea?

Recurring Slope Lineae (RSL) on Mars are suggested to be water that seasonally melts from underground ice and sublimates through the sand and dust to darken the surface. Slowly flowing downhill to ...
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1answer
82 views

Formation of petrified trees

In my book, I came across this question: Give reason why formation of petrified tress is considered as a degradation and a sedimentation action of the underground water. My book explains that ...