It actually was sold as a kit, they didn't make it themselves. czcams.com/video/Vwu_WooEJ68/video.html According to one of the comments made on the CZcams video: Warren County SWCD 1 year ago This is an Envision Groundwater Flow Simulator and can be purchased commercially through a few different vendors.
Its not exactly my thing...........but I'm glad that there are people interested in such things.......all science / knowledge is important ........I'd say this can be classified as superb content !
Thank you so much, It has brought to my attention that Tetra tech employee forgot to show in her video piezometeric line between bores#1, #6 and #8 (Confined aquifer). and I guess she mixed up water table of bores#2 , # 5 and # 7 (Unconfined aquifer)with them. Also , bores # 3 and #4 are showing different heads, cause they are not targeted in Unconfined aquifer. Also, I state my special thanks to them.
Thank yoooou soooo much😩,, I have a report to submit after two weeks and the prof explained this experiment one time and I couldn't get it but now it is very clear thaank thank thaaank you 😘😘😘
You're wrong in the first 20 seconds of the video when you refer to an impermeable layer as aquitard. An aquitard restricts the flow of groundwater but is not impermeable. A completely impermeable layer should be referred to as an aquiclude or aquifuge
The coarser the material the faster the flow, the contaminate will always follow the lane of least resistance along with the water and will typically flow from recharge to drainages, Id imagine it gets a lot more complex when you start dealing with multiple recharges and drainages reacting to different environmental factors and seasons, like a frozen surface
Love the model. Must have taken a long time to build. This is an invaluable tool to teach how ground water moves. I do have an issue with how this is presented. The dye used as a " contaminant " is not used to scale. That is ... you injected over an entire well full of " contaminant" Not once but twice. Also, it was injected with force. If this was a full scale model, a few drops of the dye would equate to hundreds, if not thousands of gallons of a " pure" contaminant. Basically you introduced an epic natural disaster amount of contaminant ( hundreds of thousands of gallons worth, in a forceful way) I just hope the people who are learning from this presentation understand this is not typical , and that the earth and underground water system acts like a filter that dissipates contaminants to parts per billion , instead of simply relocating it, as this model shows. Also, that there many carbon-like deposits ( not just sand and rocks) that absorb and " hold" many contaminants ( think of a water filter on your sink )
These demonstrations make the contamination of groundwater very readily understandable. One can see the plumes of contaminants moving towards the river. The flow is from sources (here: wells) to sinks (here: the river). In principle, one could flush contamination from an aquifer via wells pumping water into -- and withdrawing water from -- the aquifer.
Very thorough presentation, and I appreciate the detail. I might suggest changing the title to How Pollution Affects The Water Table or something like that. I felt misled to believe his was simply going to show me how aquifers work in a live model. Food coloring showing the waters movement would have sufficed with the current title. Please consider changing the title to avoid misleading others, thank you! :)
Hi, can someone clarify something for me. I thought clay was an impermeable layer, meaning that water cannot pass through. How can it be saturated if it's impermeable? Thanks
All geological materials have some value of hydraulic conductivity (the ability for a material to transmit water through that medium). The values of hydraulic conductivity vary between differing geological materials. For instance sand has a typical hydraulic conductivity in the range 1-1,000 ft/day but clay is only .0000001-.0001 ft/day. Both are storing and transmitting water, but, a layer of clay is several orders of magnitude less than that of sand and so for all intents and purposes can be considered impermeable. Hope that helps!
I assume the well screen is located at those little yellow things at the bottom of the wells. When you marked the groundwater table you included well 6. Well 6 is hydraulically separated with the aquitard layer, assuming again where it is screened. If it is screened in a separate aquifer you shouldn't use that well in marking the groundwater table. That is the potentiometric surface from the lower aquifer and can't be used as a water table for the upper unconfined.
wouldn't everything under the clay layer be considered confined since the clay has very low hydraulic conductivity? the only unconfined wells would be 3 and 4. also, the layer labeled "aquitard" looks pretty coarse on the right side
Correct. He conflated two or three different aquifers that cannot be "connected.". The underlying units each have a separate potentiometric surface, not a water table.
Great video, i just have to say though I don't fully understand why you seem to switch from teaching high school/college grade stuff, to then asking like, 1st grade stuff. like,. "calculate the velocity of the plume contaminate through the permeable layers of sentiment" then right after "which way is the water flowing, from recharge to discharge, or discharge to recharge, you may have to think about that for a bit"
It's been my personal experience that to do the math becomes easy as you become more fluent in mathematics, but grooming intuition is harder. The deeper you get into a subject, the more intuition becomes hazy.
This a great demostration and an absolutely awesome work, very effective to show how groundwater movement works. Congratulations on the results. I would like to contribute though by precising a small but important point regarding the line drawn between wells #1, #2 and #3. The water column inside monitoring wells #1, #2 and #3 represent heads and not the "water surface" or "water table" in the upper rigth corner of the groudwater system model (in fact this is true for all wells). Therefore, drawing a continuous line between those wells can be misleading. That line is actually the energy line between the points monitored by wells #1, #2, and #3 (i.e., the bottom of each well). If there were a short well just adjacent to #1 (for instance to its right, let's say well #1*), and of the same length as that of well #3, this one would show a water column slighly higher than #3 (maybe not even noticeable), demonstrating that there some general flow pattern (gradient) from right to left, and therefore between #1* and #3. At most the difference would be zero, indicating that flow there is purely vertical. That said, the difference in water columns in #1, #2, and #3 demonstrate that the model has a downward vertical gradient in the right side. Hope this contributes to clarify the difference between energy heads, and aquifer water levels or water table.
What we learn from this is that we want the most dirty water to go as deep into the ground as possible, so that the other sources of water are not affected.
really good model, but there is one thing wrong. you said the water can not pass the aquitard. in the definition is an aquitard a layer, that can be passed very bad from water, but it can pass. i think what you mean is an aquiclud.
Very thorough presentation, and I appreciate the detail. I might suggest changing the title to How Pollution Affects The Water Table or something like that. I felt misled to believe his was simply going to show me how aquifers work in a live model. Food coloring showing the waters movement would have sufficed with the current title. Please consider changing the title to avoid misleading others, thank you!
This demonstration provides a very thorough explanation of how groundwater behaves. It is possible to share how to construct this kind of physical model setup?
(from the manufacturer) It is concentrated food coloring. Pretty close to water. Slightly heavier. In this particular demo, the trainer doesn't have a strong recharge flow from the right side. So, the dye appears to sink down to the semi-confining layer. With a stronger recharge flow, it would move with the water in a more horizontal or laminar flow through the central part of the unconfined aquifer. Dissolving table salt in the dye can simulate a higher specific gravity and simulate a "sinker" contaminant that will flow lower in the respective aquifer. But, you must thoroughly rinse out the demonstration model afterwards.
I didn't know I was interested in groundwater till I watched this fascinating model in action. thanks. should sell it as a kit.
i didn't know i was interested in groundwater until my house's only source of water dried up :(
Max Juba so interesting what you said
I have to say that's interesting but it's hard to find a job in many countries
It actually was sold as a kit, they didn't make it themselves.
czcams.com/video/Vwu_WooEJ68/video.html
According to one of the comments made on the CZcams video:
Warren County SWCD
1 year ago
This is an Envision Groundwater Flow Simulator and can be purchased commercially through a few different vendors.
Its not exactly my thing...........but I'm glad that there are people interested in such things.......all science / knowledge is important ........I'd say this can be classified as superb content !
Teaching groundwater to my high school earth science students. This is perfect.
Thank you so much, It has brought to my attention that Tetra tech employee forgot to show in her video piezometeric line between bores#1, #6 and #8 (Confined aquifer). and I guess she mixed up water table of bores#2 , # 5 and # 7 (Unconfined aquifer)with them. Also , bores # 3 and #4 are showing different heads, cause they are not targeted in Unconfined aquifer. Also, I state my special thanks to them.
Thank yoooou soooo much😩,, I have a report to submit after two weeks and the prof explained this experiment one time and I couldn't get it but now it is very clear thaank thank thaaank you 😘😘😘
You should'nt use the deep well levels for drawing the water table, only the shallow well levels.
You're wrong in the first 20 seconds of the video when you refer to an impermeable layer as aquitard. An aquitard restricts the flow of groundwater but is not impermeable. A completely impermeable layer should be referred to as an aquiclude or aquifuge
7:31 "DRAINAGE!!! _I_ _DRINK_ _YOUR_ *_MILKSHAKE!!!!!_* I drink it ALLLLLLLLLLLL UP!"
The coarser the material the faster the flow, the contaminate will always follow the lane of least resistance along with the water and will typically flow from recharge to drainages, Id imagine it gets a lot more complex when you start dealing with multiple recharges and drainages reacting to different environmental factors and seasons, like a frozen surface
She said "Do Do"
Model is awesome!
you beat me to it!!!!! noooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!
I always wanted to use this model style
To show how proper vs improper well seals work also
Love the model. Must have taken a long time to build. This is an invaluable tool to teach how ground water moves. I do have an issue with how this is presented. The dye used as a " contaminant " is not used to scale. That is ... you injected over an entire well full of " contaminant" Not once but twice. Also, it was injected with force. If this was a full scale model, a few drops of the dye would equate to hundreds, if not thousands of gallons of a " pure" contaminant. Basically you introduced an epic natural disaster amount of contaminant ( hundreds of thousands of gallons worth, in a forceful way) I just hope the people who are learning from this presentation understand this is not typical , and that the earth and underground water system acts like a filter that dissipates contaminants to parts per billion , instead of simply relocating it, as this model shows. Also, that there many carbon-like deposits ( not just sand and rocks) that absorb and " hold" many contaminants ( think of a water filter on your sink )
But the purpose was to clearly show you that no matter the amount of contaminant, it does move around underground and ends up somewhere else.
dude, it's a sand tank demonstration, not a calibrated finite element simulation
These demonstrations make the contamination of groundwater very readily understandable. One can see the plumes of contaminants moving towards the river. The flow is from sources (here: wells) to sinks (here: the river). In principle, one could flush contamination from an aquifer via wells pumping water into -- and withdrawing water from -- the aquifer.
I like the cows.
Very thorough presentation, and I appreciate the detail. I might suggest changing the title to How Pollution Affects The Water Table or something like that. I felt misled to believe his was simply going to show me how aquifers work in a live model. Food coloring showing the waters movement would have sufficed with the current title. Please consider changing the title to avoid misleading others, thank you! :)
I don't know why you're asking me, I'm just a camera.
this was cool thanks
sangat mengesankan
Hi, can someone clarify something for me. I thought clay was an impermeable layer, meaning that water cannot pass through. How can it be saturated if it's impermeable?
Thanks
All geological materials have some value of hydraulic conductivity (the ability for a material to transmit water through that medium). The values of hydraulic conductivity vary between differing geological materials. For instance sand has a typical hydraulic conductivity in the range 1-1,000 ft/day but clay is only .0000001-.0001 ft/day. Both are storing and transmitting water, but, a layer of clay is several orders of magnitude less than that of sand and so for all intents and purposes can be considered impermeable. Hope that helps!
Justin Howlett great explanation, thank you.
Really informative
hi, clay is permeable but at a low rate. it absorbs water but release it slowly due to high mineral contents, so it become saturated.
this is very use full for civil engineering students
Bacott
Where did you get this model from? I would love to get this for my classroom!
It is an Envision It! Groundwater Flow Simulator. I have one for work
I assume the well screen is located at those little yellow things at the bottom of the wells. When you marked the groundwater table you included well 6. Well 6 is hydraulically separated with the aquitard layer, assuming again where it is screened. If it is screened in a separate aquifer you shouldn't use that well in marking the groundwater table. That is the potentiometric surface from the lower aquifer and can't be used as a water table for the upper unconfined.
wouldn't everything under the clay layer be considered confined since the clay has very low hydraulic conductivity? the only unconfined wells would be 3 and 4. also, the layer labeled "aquitard" looks pretty coarse on the right side
Correct. He conflated two or three different aquifers that cannot be "connected.". The underlying units each have a separate potentiometric surface, not a water table.
Great video, i just have to say though I don't fully understand why you seem to switch from teaching high school/college grade stuff, to then asking like, 1st grade stuff. like,. "calculate the velocity of the plume contaminate through the permeable layers of sentiment" then right after "which way is the water flowing, from recharge to discharge, or discharge to recharge, you may have to think about that for a bit"
It's been my personal experience that to do the math becomes easy as you become more fluent in mathematics, but grooming intuition is harder. The deeper you get into a subject, the more intuition becomes hazy.
Hello, Could you provide a link to order one of these models please
This a great demostration and an absolutely awesome work, very effective to show how groundwater movement works. Congratulations on the results. I would like to contribute though by precising a small but important point regarding the line drawn between wells #1, #2 and #3.
The water column inside monitoring wells #1, #2 and #3 represent heads and not the "water surface" or "water table" in the upper rigth corner of the groudwater system model (in fact this is true for all wells). Therefore, drawing a continuous line between those wells can be misleading. That line is actually the energy line between the points monitored by wells #1, #2, and #3 (i.e., the bottom of each well). If there were a short well just adjacent to #1 (for instance to its right, let's say well #1*), and of the same length as that of well #3, this one would show a water column slighly higher than #3 (maybe not even noticeable), demonstrating that there some general flow pattern (gradient) from right to left, and therefore between #1* and #3. At most the difference would be zero, indicating that flow there is purely vertical.
That said, the difference in water columns in #1, #2, and #3 demonstrate that the model has a downward vertical gradient in the right side.
Hope this contributes to clarify the difference between energy heads, and aquifer water levels or water table.
(from the model manufacturer): Thanks for pointing that out. You are correct. The right side is a recharge area based on the design.
I owe you my life bro
There is any chance to share how the model was make. Tnx
These models are made by EnVision, a division of Creative Labworks, Inc.
What we learn from this is that we want the most dirty water to go as deep into the ground as possible, so that the other sources of water are not affected.
Nice job!
about 7 seconds after the contamination spill, the lake is already changing color.
either that or I'm seeing through to the holding tank
Thank you for sharing this very well performed demonstration and description!
What is the function of the dye?
great setup. similar to the one i used at Purdue.
really good model, but there is one thing wrong. you said the water can not pass the aquitard. in the definition is an aquitard a layer, that can be passed very bad from water, but it can pass. i think what you mean is an aquiclud.
I thought water level stays leveled?
Edit: ok got it. Water is continously added at recharge
How much cost it comes?
This was quite useful. Thanks for posting.
Thank you so much
Is that model is made by you ? Or you bought from somewhere ?
(from the manufacturer) Sold by Creative Labworks, Inc.
you gotta listen to adds before you listen to fire baby
this video proves that I have a one track mind.
hey dont mind me asking but how much does it cost to build one of these
The model shown is commercially available from Creative Labworks, Inc.
Good Work
Could you please tell me how long underwater depth is available on earth.
Very thorough presentation, and I appreciate the detail. I might suggest changing the title to How Pollution Affects The Water Table or something like that. I felt misled to believe his was simply going to show me how aquifers work in a live model. Food coloring showing the waters movement would have sufficed with the current title. Please consider changing the title to avoid misleading others, thank you!
dope!
This demonstration provides a very thorough explanation of how groundwater behaves. It is possible to share how to construct this kind of physical model setup?
👍👍👍
Fun
What does "UST" mean?
underground storage tank
Thanks Brian
Please how can I get this model and other sort?
(from the manufacturer) Sold by Creative Labworks, Inc
I want this I want this now
go build one.
Apaaan sih lo
so basically if you have a well, drill it DEEP
do do. lol!
this is a realy cool model i asked how much it cost to build because i might build me one
Did you end up finding any information?
They bought this from us at Creative Labworks, Inc. (they Envision label on the front is a division of our company)
whats the sg of the dye?
(from the manufacturer) It is concentrated food coloring. Pretty close to water. Slightly heavier. In this particular demo, the trainer doesn't have a strong recharge flow from the right side. So, the dye appears to sink down to the semi-confining layer. With a stronger recharge flow, it would move with the water in a more horizontal or laminar flow through the central part of the unconfined aquifer.
Dissolving table salt in the dye can simulate a higher specific gravity and simulate a "sinker" contaminant that will flow lower in the respective aquifer. But, you must thoroughly rinse out the demonstration model afterwards.
great video
ÄR DET DU MAYA?
Very nice think you
omg doubt ad
the cows,,,,
Is this for preschoolers or what?
Hmm. CZcams recommendation algorithm needs work.
@5:04
I hate this video. I HATE groundwater.
Wer sagt, die Wissen nicht Vermessung...........können ?
Bei jedes Bagaben Kinder. Lachen Sie uns danach......... !