I live in Colombia South American and I have a very small company that drills water wells, I really don't know what I'm doing but your videos help a lot.
This is so simple and so good that I have downloaded it. Thanks. If you had touched briefly on why the water mass would be under pressure, it would have been perfect.
Great video! I live on a barrier island with an unconfined aquifer, just a big sand bar. North Padre Island, Corpus Christi, TX. I have washed in several wells and use this for irrigation. I just found you today. I have just put in some monitoring wells and am trying to study the drawdown and cone of depression. My goal is to utilize this resource responsibly and help educate others. I haven't seen all of your videos yet, I do enjoy the way you present the information. Thank you!
Amazing explanation! It was like a lightbulb lit up in my head when you explained that the aquitard puts pressure on the confined aquifier. So the potentiometric surface is the level the confined aquifier water wants to be at
I stumbled upon this whilst doing a hydrology quiz. And yes this video is 7 years old and probs not that appropriate.. But you have an attractive voice and could use that weapon to teach literally any topic for high school and college female students haha.
I wish you could have clarified what confined and unconfined aquifer is in the very beginning, though it is clear that sandstone is sedimentary rock. But it cleared very well piezometer 😊
if the layer is homogenous can we assume it is permeable due to a greater chance of connected pores. and for heterogenous layer it would be impermeable
Homogeneity only means the layer has a constant permeability throughout the unit. In other words, the whole unit could be relatively permeable or impermeable, but its the same permeability everywhere within that unit. Heterogeneity means permeability varies throughout the unit spatially.
Is there any relation between the thickness of shale layer and the amount of pressure buildup in the water table, hence the height of potentiometric surface?
I've never heard that term, but it works for artesian aquifers (which are always confined aquifers). You have to be careful though, because a potentiometric surface can also refer to the water table in an unconfined aquifer (which is NOT an artesian aquifer).
Hello sir..... First thank you for all information I really hapy because I understand these concepts from you thank you..... Can I contact with you Dr I have some question about these if you have wathsapp or email
Good question, a semi-confined aquifer could mean an aquifer that is only partially confined. In other words, there may be some "leakage" into the semi-confined aquifer from overlying aquifers.
I made that clear in the video. the potentiometric surface is the level to which water will rise in an aquifer, which is the same as the water table in an unconfined aquifer.
Firstly I want to say that I did not want my comments to be harsh, I am really sorry my friend, I have to say that your videos are great, smart and helpful! Secondly, at the start of the video, you said that the water table is the water level in the aquifer, which is only partly true, it is the water level in the unconfined aquifer. at 4:27 min, you said that the water table in the confined aquifer is .... the fact is that there is no water table for confined aquifers.. I hope this makes sense?
I have been struggling to tie this concept together the entire day. Thank you again!
I live in Colombia South American and I have a very small company that drills water wells, I really don't know what I'm doing but your videos help a lot.
Nice
honest person you're, i like that
This is so simple and so good that I have downloaded it. Thanks. If you had touched briefly on why the water mass would be under pressure, it would have been perfect.
Very simple and very helpful video with great explanations. Thank you!
Great video! I live on a barrier island with an unconfined aquifer, just a big sand bar. North Padre Island, Corpus Christi, TX. I have washed in several wells and use this for irrigation. I just found you today. I have just put in some monitoring wells and am trying to study the drawdown and cone of depression. My goal is to utilize this resource responsibly and help educate others.
I haven't seen all of your videos yet, I do enjoy the way you present the information. Thank you!
i study environmental science and for my hydrology course this video was really helpful.. keep up the good work
ohh me too
Amazing explanation! It was like a lightbulb lit up in my head when you explained that the aquitard puts pressure on the confined aquifier. So the potentiometric surface is the level the confined aquifier water wants to be at
Great explanation! I am reviewing for my water resources final tonight... thanks so much for the help!
I stumbled upon this whilst doing a hydrology quiz. And yes this video is 7 years old and probs not that appropriate.. But you have an attractive voice and could use that weapon to teach literally any topic for high school and college female students haha.
Love the video. Studying water engineering and this was very helpful in terms of understanding the concepts. Thanks
Thank you sir!
Thanks for the best explanation 🙏
Such an amazing video. Thank you so much sir for making concepts so crystal clear.
thank you!
Great, I understand now. Thanks..
I wish you could have clarified what confined and unconfined aquifer is in the very beginning, though it is clear that sandstone is sedimentary rock. But it cleared very well piezometer 😊
very good videos. love em.
Well explained ....really very amazing
thank you dear , it was helpfull
Thank you sir
Well explained.
the water level in a well (piezometer) indicates the water table for unconfined aquifers and the potentiometric surface of confined aquifers.
Isn't that exactly what I say in this video?
Thanx
good video! so helpful
çok teşekkür ederim beyfendi.
if the layer is homogenous can we assume it is permeable due to a greater chance of connected pores. and for heterogenous layer it would be impermeable
Homogeneity only means the layer has a constant permeability throughout the unit. In other words, the whole unit could be relatively permeable or impermeable, but its the same permeability everywhere within that unit. Heterogeneity means permeability varies throughout the unit spatially.
thankkk youuuuuu
Is there any relation between the thickness of shale layer and the amount of pressure buildup in the water table, hence the height of potentiometric surface?
Can u make a video about pumping!!
thank you
amazing video!!! lets make another ons
6 people disliked this video who failed at their hydrogeology exams.
10 people as of 1 Feb 2020
Why you stopped uploading videos
Super busy w/ other things but i have been meaning to get back to it!
In my geology 2301 class they call the potieometric Surface an Artesian Pressure Surface
I've never heard that term, but it works for artesian aquifers (which are always confined aquifers). You have to be careful though, because a potentiometric surface can also refer to the water table in an unconfined aquifer (which is NOT an artesian aquifer).
Hello sir..... First thank you for all information I really hapy because I understand these concepts from you thank you..... Can I contact with you Dr I have some question about these if you have wathsapp or email
What is semi confined aquifer?
Good question, a semi-confined aquifer could mean an aquifer that is only partially confined. In other words, there may be some "leakage" into the semi-confined aquifer from overlying aquifers.
who is still watching this video in 2019??
2020
the water table is the potentiometric surface for an unconfind aquifer, there is NO water table for confined aquifers
I made that clear in the video. the potentiometric surface is the level to which water will rise in an aquifer, which is the same as the water table in an unconfined aquifer.
Firstly I want to say that I did not want my comments to be harsh, I am really sorry my friend, I have to say that your videos are great, smart and helpful! Secondly, at the start of the video, you said that the water table is the water level in the aquifer, which is only partly true, it is the water level in the unconfined aquifer. at 4:27 min, you said that the water table in the confined aquifer is .... the fact is that there is no water table for confined aquifers.. I hope this makes sense?
No worries, I see your point now. Yes, it would be called the potentiometric surface for a confined aquifer and not the water table.
@@SSSISIable i think you're wrong -_-