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If the water level is actually below the confining layer, the water is no longer "confined." Generally, I would describe this as an unconfined aquifer. I am fairly sure this is correct. I would give this answer to my students taking a course in this topic at the university.

Paul1997 wrote:If the water level is actually below the confining layer, the water is no longer "confined." Generally, I would describe this as an unconfined aquifer. I am fairly sure this is correct. I would give this answer to my students taking a course in this topic at the university.

Wow, really!!! It's a good thing I read that because I always thought it would be a confined aquifer! But what I don.t understand is why, because it has an unsaturated zone above the water table like all aquifers, but with a confing layer on top, so doesn't that mean it is a confined aquifer? In other words, what is the def of a confined aqufier and an unconfined aquifer.

Okay thank you for your input Paul1997. So any aquifer that is in between two confining layers but has a water table is confined? What if the vadose zone was only a couple inches? Where do you draw the line?

CAn some one tell me the vocabulary I need to learn

Check the wiki

We made it to state! barely though, we only placed in four events, but I was in all four! it was cool! witchita here we come!

kittybug65 wrote:We made it to state! barely though, we only placed in four events, but I was in all four! it was cool! witchita here we come!

Nice.

Anyway, I have a question. I'm pretty sure I've seen this on here before, but in which state are all aquifers contaminated? I have seen it on 2 tests this year...I'm thinking either New York or New Jersey, although one of the other options was Texas.

According to this site, yes, it is Texas: http://www.texascenter.org/almanac/QUALITYCH2P7.HTML

Edit: Or, it may be Texas.

AlphaTauri wrote:According to this site, yes, it is Texas: http://www.texascenter.org/almanac/QUALITYCH2P7.HTML

That's probably exactly the link someone used to put that question on a test. Wish people would be more careful, though. The quote at that link is:

"all nine major aquifers and 20 minor aquifers have experienced some form of contamination"

which DOESN'T necessarily mean all aquifers in the state experienced contamination (maybe they have, but you can't tell it from THAT quote). If you read in the paper that "all major mob bosses and 20 minor mob bosses were arrested", you'd be pretty sure there were still minor mob bosses at large. Further, to put the stated question on a test, you'd have to be sure that NO OTHER STATE had all aquifers contaminated.

We all need to be careful with the arcane details when writing tests. Lots of misinformation and poorly stated info out there! (This is totally not @ AlphaTauri, who was just providing the link, I'm just voicing frustration at the things I see presented as "fact" on various tests!)

How are you supposed to know what the event supervisor is specifically looking for in a presentation concept? For example, on the sheet that we were given at a competition, it said "Demonstrate Non-Point and Point Source Pollution." This is what we did, but apparently they were looking for remediation of both, although they did not specifically say so. We ended up losing a lot of points on that one problem.

Also, how are you supposed to demonstrate a flowing artesian well? The pressure in the model isn't high enough for the water to flow out, and therefor we just end up explaining what it is and showing a well tapping into a confined aquifer...