 Hello everybody. Welcome in this fourth class of our open course on groundwater modeling using ModFlow and Model Muse with Sol Montoya from Hatari Labs. Last time we have learned how to make our first model and today we are going to make it a bit more complex, even see how we can model a bit more. I'm very curious. I'm not going to hold you up more. Please use the chat if you have questions for Sol. He will regularly look at it and introduce yourself and your country in the chat so we know who is here in the virtual world with us. And enjoy the course. Sol, the floor is yours. Okay, thank you Hans and I will share my screen as well to start working. Okay, so far I think that this is it and let me check the chat. Okay, I hope that you have downloaded the material for today. 21 people online. So yeah, as I told you Hans, it's an exponential pattern. Okay, let's see. Let's go. Okay, so here what we are going to do today is, first we start with the steady model. We are going to do a steady model. Most of the exercise, I mean, what will bring you success on your model is practicing. So you are not required to do it because everything, like, tomorrow you are not. I mean, if you are learning workflow, please keep the idea that if you want to do real modeling, stochastic modeling, machine learning and model modeling or this will come with time. I mean, you have to do a first, good and simple model and then go on with the complexities to order and then you will increase complexities. Be patient. And as I told you, be patient. Be always open minded and it means a lot of work but it will give you a lot of rewards in your life if you really like it and trust in yourself. This is such a, it's really important because you have to deal with the code. You have to deal with the code and then you have to trust on yourself because you are going to face a lot of challenges. Okay, so let's see. So I have here, we are going to do a steady model for today. And, okay, so let's start a model news. Model news. Okay, so let's start a new workflow model. Next. New workflow model. We are going to work with meters and seconds. Okay. Let's see. And here we are going to work with three layers. We are going to work with 11 rows, eight columns, three layers. The column width, it will be 150 and the column, the row width will be 200. Model top zero and bottom elevations will be minus 20, minus 25, minus 35. Okay. And this will be a crucial one. We've got two, we've got three. Okay, so that's it. Eight, eleven, eleven rows. Eight, three layers, one model top zero. Yeah, if you are here with me, please type guess one. Today we have students from Chile, Saudi Arabia, Netherlands, Tanzania, Syria, Sweden, Portugal, India, Congo, Ethiopia, most India, more from India, Nigeria, Kenya, Indonesia. Okay, so I, well it would be my challenging life to know and to visit at least half of the country that I can't mention. Okay, so finish. Okay, so this is our model. And then you will tell me, hey, I don't think nothing, nothing has happened. Why? Because you have to send it. Here it is, you send it. Okay, yeah. Okay, so this is our model, it's a pretty simple model. We are going to review the, the, we are going to work with on a steady state and our time unit will be seconds. So let's go here model, model flow time, model most flow time. And here we have minus one to zero steady state. Okay. So just to review that, because we have to be sure that we are going to work on the steady state and our, our, our model will last just one second and we'll go from minus one to zero. Okay. This is just a review because those are the default parameters. Okay. Okay, great. Okay, yeah. But, okay, what we are going to do now is that we are going to shift. Okay, we are going to shift because this model is on mode flow 2005. Okay. Yeah. You can do that while you're working with the model. I mean, so far it doesn't, your model doesn't break. Okay. But however, yeah. Well, it is intended that you can do it one or maybe two times, but do not. I mean, it's not really a good practice to be like jumping in between my mod, mod flow versions. Okay. So if you go to model selection and then you go to mod flow 2005, automatically the great, this great software will keep with them. We'll keep you with the geometry, but we'll allow you to, to work in both 2005. Okay. So everybody go in model selection mode flow 2005, you won't see any further change, but you have already, you have already changed your version. If you are here with me type yes one, yes two. There is a question that say, what is the dependent what, which is, which are the criteria for the model, for the function, for the, which direction is it has to mean, I told, maybe I told that on this course, it has to mean reasons. The first is to have an adequate resolution on your, on your heads and on your drums. And the second is to have another way not to, not to work with this, with a big amount of sets. Okay. Yeah. Why 2005? That's really a good question because we are going to work with the confinement conditions so much for 2005 for this exercise, because the confinement conditions for most of the six are different. And I told that in another, there's a tutorial on that. Okay. Ready. Okay. Great. So let's go where we are going. Let's go here to model and then not to model and then later groups, model later groups. And here on layer groups, because we are in one for 2005, we can set this to convertible while the aquifer two and the aquifer three will be confined. Okay. So with that, we are going to work with convertible and this and this will be confined. Okay. Great. If you are here with me type yes three. Okay. Great. Great. So yes type. Okay. Okay. And let's go follow the tutorial. Okay. So we have to use algorithmic activities. So we have different horizontal and vertical algorithmic activities. Okay. So we can do it by objects. Okay. But we can do as well, we can do it by, we can do it with objects or we can do it with a case layer for our case. It will be faster with that case layer. Okay. Data data sets or let's do it by objects because in order to show you the procedure and follow the content of the tutorial. Okay. So we are going to be in the first, for example, this is the first layer, second layer of the layer. So let's go to the first layer and here by default is two because it will means that it has two formulas for the set up for the set for the elevation. Okay. So these two are here on the first layer and let's create a rectangle that covers the whole, the whole extension of our area. Okay. So this will cover the whole extension of our model. Okay. I will drop as this. Okay. And here we are going to see K for a prefer one that is alluvial and it will be from one to a prefer one bottom. Set value of recloses. We can change the color. Okay. And if you are here with me tight. Yes. Which number? Yes, four. And say, can we say, can we select layer one as no simulated? I mean, really, you can select as the type of model that you want. I mean, really up to you. It depends as well on what you want to know. Okay. How do you conceptualize the, the groundwater system? Okay. Okay. So what we are going to do next is we are going to data sets and they are here required. Okay. X instead of being wanted to the minus form, it will be 5.8 e to the minus five. Okay. And K Y will be K X divided by five. Okay. So K, K Y will be K X divided by five. So you have K X of five point 78 e to the minus five. Okay. Why would be K X divided by five? You are here with me. Yes. Five. Okay. You are doing a maze. Okay. So we have K X five point 78 e to the minus five and the K Y is K X divided by 10. And the K D. Yeah. In the vertical direction, it will be 1.16 e to the minus five. Okay. Into the minus five. Okay. Okay. So it will be 1.16 e to the minus five. Okay. Into the minus one. Okay. So this is the last 1.16 and e to the minus one. Okay. If you are, okay. So we are going to hide this one because why we are going to hide this one because somehow it will prevent us from doing or for selecting or for working with another with other rectangles that also call the area of study that for the second layer. So how we hide this? We do just click and then you will hide selected objects. So here we just have to do right click and type hide selected objects. Okay. And then we go to the second layer. Okay. So I can do whatever I said. So I do right click, hide, select the target and go to the second layer where I do another polygon. Another rectangle. Where I do another rectangle. And this rectangle will be K of a prefer tool. This case will be confined and it will be from a prefer one bottom to a prefer tool. You can change the color. You can change the color. And then, okay. So K2 because we are in the second layer. We are in the second layer. Here we are in the second layer. So that's why K2 and it goes from a prefer one bottom to a prefer two bottom. Okay. And also appears here in the cross section. And here on the data sets require Kx. And here on Kx it is 1.16 into the minus 6. Kx divided by 0.1. And the Kv is 5. 5.78 into the minus 6. Okay. So just a little bit. Kx is 1.16 into the minus 6. Ky is Kx divided by 0.1. And Kz is 5.78 into the minus 7. Okay. Are very similar to the values that are on the manual. So please follow them as well. And if you are here with me, type yes. If you are here with me, type yes 6. Please, if you are here with me, type yes 6. Okay. Once again, are the values. And once again, we hide this. Why we hide it? Because it will prevent us from doing another number. So hide selected object, hide selected objects. Okay. And then we go back to the bottom. And once we are on the bottom, we also select this. Okay. We are in the bottom layer. Please note that here we are on the bottom layer. And we select this. We select this. And here it will be K over aquifer 3 confining. And it will be from aquifer 2 bottom to aquifer 3 bottom. And as well, we have another color, any color. Okay. So, okay. So please follow me here. And then let's go to model features. No, to datasets required. And then we say KX will be, it will be 0.000115. Okay. KZ will be KX divided by 10. And KZ will be 115 into the minus 5. Okay. Once again, KX will be 1.15 into the minus 5. KY will be KX divided by 10. And KZ will be K1.15 into the minus 5. Okay. If we are here, we need type JS7. Here we have 37 listeners to this mission on the fourth class. Seems to be a steady rate of followers. Okay. So, okay. So here we have already, we have a different value for KX. We have a different value for KY. We have a different value of KZ for every layer. Okay. Let's try it. Okay. And then let's go here to edit. No. To date that, edit datasets. Data, edit datasets. And here we will go to hydrology, mob flow initial head. And because, okay. And this is something that I have to remember. Okay. Because before we have worked with these ones, okay. And these are the default values. But you have created one rectangle for every layer of your model. And you have already assigned another value. Okay. So this has a, this has a, this has a logic. Okay. These are the default values. But if you define an object that defines a value, this value will over, I mean, will superimpose these default values. Okay. So as long as you have an object that will apply one value, the model will interpret the parameter defined on the object. Okay. Have you understood this? Please, if you have understood this. Yes. Eight. Otherwise I can repeat it. Okay. So, okay. So that's why all of these values are no longer applied to the model because we have already objects that define the values. That is why these values. Okay. So, but the model is okay. We have to be more low model top, model top. That's two. Model top. That's two. I mean, you are being such a great group. I mean, it's a pleasure to give a course to you because your advance is great. I mean, it's really aimed to do more complex things because some of the challenges that we encounter when we leave courses is that we cannot achieve a same level of the people of the students in order to develop complex topics. Okay. So here we have model top plus two. Okay. And it's modeled up with capital D and underscore. I mean, if you are going to type it in another way, that won't work. Okay. Okay. Yeah. Okay. So we have already model top plus two. And then apply and then close. Apply and close. Apply and close. Then go model. Then go to mode flow package and programs. Then let's, okay. Which is the next step? We are going to define our boundary conditions. So here in model, let's go to package and programs. Let's go to model package and programs. And here let's open our boundary conditions that we are going to work with the CHD, with the recharge and with the world. Okay. CHD, recharge and well. And here on well, we have to define that the recharge is in the top active cell. And what does it mean the top active cell? And this is in the documentation. If you have infiltration and if you what the level or your first, if you have infiltration and the water layer is in your second layer. So that means that the first layer is dry. But if you put, I mean, if you work with the top layer and then if you have level charge and by some, by somehow or the first layer is dry and the, and the first weathered layer will be the second, the third or fourth. Actually it won't apply recharge. Okay. Because the first layer, as you say, the top layer is dry and once it's dry, that it won't allow you to be recharged. That is why you can use the top active cell. And what is the top of the cell? It means that if you have a charge and if your first layer is dry and then if your second layer is dry, it will look for the first weathered layer and it will apply recharge to that. Okay. So in this case, we are going to type the active cell and then type, okay. Okay. So constant head recharge and well and here recharge top active cell. If you are here with me, type yes nine and please tell me moist, which is the, the nine and tell me, tell me if you are moist, tell me what it is. Yeah. Okay. So once again, we are going, I'm going to hide these ones. I'm going to hide this one. And then we are going to give our weather conditions. So here we are going to create a line that goes from this part to this part. Okay. And this, this, this is here. Okay. CHD naught. Okay. Let's change color. And then, and this will be one. And it will be on model top because it will be applied here. Okay. So CHD naught, we change color and then we change the set formula to one and this type model top here. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. Okay. So it will be one to zero and here it will be, and the starting and the ending is the same because it will be model top plus two. And this one will be model top plus two. Okay. Okay. So here we are. Okay. Here we are, okay. And then there is a question of what can they say? You have bottom active, bottom layer active. Is that what you should be? Yes, the bottom active layer should be this. So this will be on the top last two. So as you say, here is our boundary condition. Then we are going to do a similar boundary condition here on the last row. Here on the last row, we are going to do a similar boundary condition that will be CHD South. South, it will be from this, and it will be as well for model top, model top. Okay, so it's the same as we have said before. However, here, all model features on the CHD will be minus one to zero, and it will be model top minus two, and here it will be model top minus two. So the boundary conditions are related to the model top. So you will have a boundary condition that is two meters above surface, and then here that is two meters below surface. Okay, if you are here with me, type yes. So it's like, okay, so you will have a regional flow that's going from here to here, and the difference on heads will be four meters, because this is plus two, and this is minus two. Okay, right? So let's continue. Then we are going to locate, then we are going to locate in the heart, in the middle layer, in the second layer, okay? And then we are going to go to, I don't know, to the third layer, third layer, okay? You are going to go to third layer, and then you are going to locate yourself in row five, row five, column six, row five, column six, here. So let's go to the third layer, here go to the third layer, and then let's go to row five, column six, okay? Great. Yes. And here, let's do a click here. Let's do a click here. And, okay, so here this will be called well. It will be called from upper two bottom to upper three bottom, yeah? We can change color as well, okay? It is in our third layer, okay? I'm here on more flow videos. Let's go to, well, because this is a well, it goes from minus one to zero, this one goes into pumping rate, and since it's pumping, it's minus 0.001 with eight, 0.001 with eight. If you are here with me, type yes 11. If you are here with me, please type yes 11. So it is on the upper two to the upper three, we change color with naming well, and minus one to zero, and this is the pumping rate, and this is direct. If you are here with me, please type yes 11. Oh, you're doing a nice type, okay? Let's go here to model a more flow partition programs because, let's go to model more flow partition programs because I have to check something. We, okay. Okay, following this manual, we are not going to work with recharge. We are going to work with the river package, okay? So, okay, so we have already find the CHD, the CHD as well, but according to the manual, here in one flow partition programs, please change the recharge to the river because we are going to work with the river. Okay, so if you have done this, please type yes 12. If you have done this, please type yes 12 because what we are going to set is the recharge, okay? Great, so what we are going to do is we are going to create a river, so from here, let's go from this one, let's go from this one to this set, okay, from the, remember that you only work on the second set. Let's go from here to here. Yeah, and this will be called river, let's change color. And this goes from, this goes on the surface of the model top. So, let's go here to more flow features. And on the river package, we are going to type minus one to zero. And on the river stage, we are going to type this thing that we'll see, and this is the right, right here, okay? And say, say, say, okay, let's go here to the F formula, let's go to the F, okay? Because we are going to type this. You can look from this into the function because we are going to interpolate, and then here on GIS, prior of object length, that will go from model top plus two, and here will be at a distance of 0.0, one, two, five or minus two distance of one. Okay, what is this? What is this? Okay, okay, something that allows, this is from all of us, not from one flow, is that you can create formulas, okay? And these formulas can be pretty complex, but they can be also very powerful. What they say, these ones, is that's an interpolation, and interpolates from different points along the path of the line, okay? Because you have defined the line from this vertex to this vertex, so this will be your zero, and this will be your one, and say, okay, here in the fraction 0.015, it will be model top plus two, and this is true because you can have a constant head of model top plus two, and here where the line ends, it will be, or I mean at one, it will be model top minus two, and that is true as well because here is the constant head of minus top minus one, okay? So these, I mean, you will find this option in object and interpolate here in same map, and since I don't want you to get lost, I will put that on the chat, and they say, it is possible to have model top plus two in layer three, yes, it's possible that you can define your boundary conditions on the layer three, but it really depends on what you are doing, okay? If you are doing with me, yes, it's working. It really, I mean, you're not, and I said to you, you are not constrained, you are not constrained by the software, because the software can do a lot of things, you're constrained mostly of your knowledge of the ground quadruple system, okay? Okay, who else is here with me, the formulas on the chat so you can copy paste, and then if you copy paste, it will appears here and this is combined, okay? I will put it for you. Well, for people who said that, fine. Okay, so, and then the conductance will be 0.015, and the river bottom is closely the same but is two meters below, so that means that here it will be minus four, and here it will be model top, okay? So this is the formula for the river bottom, because I mean, the river bottom is at the bottom, so and then we say that it has a water height of two meters, so it will be model top at the first at this fraction, and it will be model top minus four at this fraction. This is also on the chat, so you don't have to worry too much, but if you can do it, okay? So this is the river bottom, and then this is the interpolated fraction, yeah? So, and then you just type, okay? Okay, I will give you one minute to save your project and run your project, okay? So if you are able to save your project and run your project, type yes14, because this, and then after one minute, I will do it by my own. I mean, we are going to do all together, okay? So if you can do it, save your project and run your project, just type yes14, otherwise in one minute we can do it all together. If you can do it by your own, yes14, otherwise you have to keep getting more seconds to do it. Almost surprised me, give me hope nobody else can save your project and run your project. Come on, come on, 10 more seconds. Type yes14 if you have done it. Okay, great. So we have to save, find, save. Where we are going to save? We are on day four and then we create our app. It's always recommended exercise one and then it's always recommended to create a folder, okay? Because most of them will create a lot of files in this folder, so. And these will be model one, exercise one, model one, okay? So we have day four, exercise one, model one. Run our project, don't change the name of the num file, save. And then you will have this, then this is the kernel. These are some warnings, yes, some different data. And this is your model monitor that says that so far the person is going to see everything was all right. So if we close this, we are going to the latest part of this because here it says the water balance. If you are here with me, please type yes15. If for by some, you have followed a tutorial to install Modflow six, but here you will need Modflow 2005 install as well. Where is Modflow 2005 installed? You have to go to model, run our rotation if you have any problem and then you need Modflow 2005 here installed, you need to have this as well as you have the Modflow six in Y, you need to have Modflow 2005 in Y, otherwise it won't run. Okay, yeah, you can download it here and do the process. It's really similar of the set demo process. Okay, so here we are and this is our water balance. Okay, so I'm here in our water balance, okay, yes. Yes, follow us and while later on you can, you can install your Modflow 2005. Yeah, in our water balance, we have that the cost and head brings 18, 11 liters per second. And now in our case, 10, one liter per second. Yeah, the wells do not take anything and the river brings a two liter, 1.28 liters per second and from that, the wells takes most of that, takes like 90% of that and just almost one liter per second goes to the, no, it takes almost 60% of that and one liter, almost one liter per second goes out of the system, okay? And the percentage of the currency is really low and then you have to reach the, you have to reach the convergence, the convergence. And then what we are going to show you is the water heads, okay? Okay, so we close this and with this one, with this one, with this one, we are going to open the BHP, okay? We are going to open the BHP, that are the head distribution, but as a binary file, as a control unit. And this is our, you can do more, okay? I will repeat it, I will repeat everything from the file, but I will just to show you just, please follow me because I will repeat, I can do this and I can change the color scale and then you can have this where you have your pumping, you have your river and then you have your river flow, okay? Okay? So, and then I vote, okay? Let's do all together, with that, I delete all my resources and then I can import it again. So, let's go, import and display more results. Let's open the BHP, let's open as a control unit, you have only one stress period, so the control unit is tight, okay? So you have this, okay? Maybe you have it in another course, okay? I want more control layer because this is every meter, but I want more, so I can go here to data visualization and here on data visualization, here on color data, the control interval will be 0.2 and then I can change it from brown to blue, any color scheme. Okay, and that's it. If you are here with me, tight, yes, 16, otherwise, I can repeat, okay? If you are here with me, tight, yes, 16, otherwise I can repeat. Okay, yeah, I mean, if you have any problem here, just install, and this is mostly the work that you would do when you do the make a model. I mean, you have to be always looking at the story, working, depending on it, okay? Anybody else? Anybody else? Okay, anybody else? Any questions? Okay. Well, Hans, are you there? Yes, I'm here. Yeah, because there is a next step, there is an exercise on this class, and the next exercise is to import a digital elevation model into a model geometry, yeah? But this will take 20 minutes. Will we be all right for the organization of this course? Yeah, or do we have more time next time to do it? So, what do you do with the material? What I can do is I can show the procedure, and then they will have the video. I think that's a good idea, yeah? Just show it, and then if there are questions that people can ask next time. Yeah, okay, and then we'll have the video in here. Okay, so I just go here. Okay, okay, what we are going to do, I will going to show you to do it more quickly the next exercise of the course. I will do it explaining all the details. However, for you, you will have the video, and then you have all the steps, and then you can reproduce by your own, and then you can drop your questions. I will drop my, you can drop all your questions through the chat next time, yep, to give you a score. Okay, so I can save this, but I prefer to save it to delete the results and save my project, okay? Okay, I think that many people struggle here. I strongly recommend to re-watch the video again. Okay, let's open, let's do this one, that is the build groundwater model, okay? I will do my my own, so just relax, just stay, just watch the video because this is entirely work by my own, and then you will see somehow which is the speed of people, of a person that do this usually, I mean, production escape, yep. Let's go here, let's go to model news, and then here we can do, we are going to work with modflow, next, I don't need to, next, and here we go, we work with modflow, NWT, okay? You need, you need on model, run allocations, modflow, NWT already installed, I mean, has to appear in white, it's the same procedure as the other ones, I mean, I have found that some of you say, okay, I couldn't find it, but this is not because I want this course to be incomplete, and this, and I don't want to raise some question and say, hey, the teacher didn't, didn't haven't teach me that, it's mostly for to share the philosophy of dealing with this type of requirements, I mean, you, I mean, if you are going to do a successful career in modern modeling, or you want to do successful searching in modern modeling, you have to be, you have to discover things by your own, I mean, half of the things, because there is also this course, okay? So let's go modflow, NWT, 10.3, upper aquifer, so this is the same, yeah, the same 100, 100, 20. Ah, no, normally, let's go to normally, okay? So, and this, this is my node read, and then what I will do, I will open this from active some check-file, so file import check-file, file import check-file, and here on the data, on the day four, okay, because I have not loaded the data from the course material, I have not loaded the data from the course material that I have extracted here, so, okay, so here's the data, how's the active some, some cross-files and check-file, so here on data, I have active some, and what it, what it tells me is that say it says value from close sales, and it goes from two, and this one goes from three to six, require the initial to model, though, and then to the end of the model that is lower aquifer bottom, okay, that's amazing, yes, okay, nothing happens, and then let's go to model, let's go to workflow layer groups, okay, and since we are working in workflow to end the routine, to have as well this, your first layer could be convertible, your second layer could be convertible, okay, and your third layer will be confined, okay, however here in the first layer, the discretization will be five because we are going to divide the first aquifer into five layers, okay, and the third layer will have also a discretization of three, the first, the upper and the lower aquifer will be split in three, this one in three when the rest will have a value of one, okay, nothing will happen again because you cannot see the model because actually you have not generated your grid, so let's go again, so here let's go show our height objects, here let's go to unusual objects, double click here to bring back the dialog box, this one, and then you will use to set itself size of 15, okay, this will be a 15, okay, and here on datasets we define that inside this everything is true, so everything is active, okay, if I type okay, and I type close, and then if I generate my, this is my study area, but I, okay, so this is my study area, and inside this everything is active, but I have some inactive parts, okay, but the inactive parts in this case will come on a chair file, so how do that? File import chair file, and then let's go to inactive, and then let's go here separate the close cells, it will be true, and then it will be called from model top, okay, to the end of the model, and then here, see that's it, okay, and this part is inactive, I think you can see here, this is this part, you can also select here on my user kit because you have imported, but you don't have applied to anything, so let's put double click to bring back again the dialog box, you can check column or not, and then here on datasets require an ideology, active false because this part is inactive, false on this side, okay, okay, so and then if we change this to show active, you will see that the cells that are in this column won't be shown, okay, and we are going to import a digital elevation model, okay, so here, you will see that we have three layers on the first layer and three layers on the third layer, okay, but let's apply a server, raster file, so file import server grid file, so in GIS this is the GRD file, so and then on data we find the dem.grd, okay, and then we apply these nearest points, cells by interpolation, and then we apply directly to model top, we can apply directly to model top and we can point closest to cell center, okay, this is a type of filter, okay, and this actually brings the, this brings the raster and apply directly to the server, okay, so if we type this and then we go to data to edit data sets, here on the model top we put interpolation fitted surface, you will find this, okay, you will find this, okay, okay, so let's work with the different layers, so let's go to data, delete global variables, okay, no, edit data sets, data, edit data sets, and here we're required on the other thing, or on the upper button, this will be model top, model top minus 37.5, okay, so the layer, the first layer will have a constant thickness of 37 meters, 37 meters, okay, and this will be model top, model top minus 45, okay, and the last one will be model top minus 200, okay, so this will be minus 32, 37.5, minus 45, minus 200, okay, and the mode flow initial hit is model top minus 10, okay, and then on kx is 001, on k set is kx divided by 2, and then as I applied, and then you will see, and then you have a lot of vertical accelerations on interview, vertical accelerations, and then you have a lot of vertical accelerations, so in your view, vertical acceleration, just type it five, okay, so in your view, on your vertical acceleration, just type five, and then you will see this procedure, and then you can see, you can watch which are the, okay, you can watch with us a color grid, how are the elevations, the important elevations in your model, so you can see how it goes, the distance required, the definition point top, and then you can see, and this is the, then file already inserted in the geometry of a groundwater flow model, and that's it, this was the second exercise of this class, and on Monday we are going to have our final class, for Monday please go, please be sure that on Kieron-Clarna locations you have all the executable, both flow six, both flow 2005, and both flow WT, because as long as I know, there is no panorama when you are going to have one version that will oversee the other version, so I think that you will have environment of three models, three versions or more flow working over to there, okay, that was everything by me Hans. Yes, Sol, we also want to see you back, so maybe you can switch on your camera, so we can close it off, I think this was a great session where we learned more about making our own models, and as Sol said, I think one of the important takeaways is that you really need to practice, we keep on repeating that, building your experience, and don't take these tutorials as a recipe to push certain buttons to get a fixed result that is applicable everywhere. Here is where your groundwater knowledge comes in, and you need to translate it to a model, and you see how many possibilities you have, how many choices you have in this tool, and that's all your choice. Furthermore, it was nice to see in the second half how to import GIS data sets, you see that ModFlow supports a few formats, and some of them are probably GDAL supported formats, so there is on our OpenCourseWare website, where you also find this course, there is also courses on GIS, and one of the things that you really need to learn is to use GDAL, where you can convert between different formats and projections. The shortcut to go to that course is GISopenCourseWare.org, I will put it in the chat, and there you can find a tab on using Command Line and GDAL, and that is very important if you want to preprocess data for your models and for a lot of other things. So I'll keep it short, and I'm really thankful for good participation and for Sol for his clear explanation. The last part went fast, but the recording will be up there as soon as possible, so you can watch it back and repeat it. It's always good to repeat these things at your own pace, and I'm very curious about our last session on Monday, so I wish you all a very good weekend. Sol, some last words from you? Okay, yeah, so as I told you, most come from practice, and then you have to repeat. You have the video to repeat, and then I think that the challenge is on, it's learning by the video, so that is much more better than learning by the manual. I mean, I have learned from the manual, and I can tell you from the video. Yes, something really short. I have, in our in-learning platform, we have a new event, and this is something new, that we have a new event on feeling missing precipitation data with machine learning in Python and scikit-learn. We are going to develop this the next Friday, no, next Thursday, the 20th, we are going to develop this webinar, and that this webinar is open source software that has a cost of $15, and just to remind that this, the payments is in order to support our research. Sometimes our webinars are free, and sometimes we charge for that. We hope you can participate as well. That sounds really useful, so I can recommend to do that. You need to treat your data before you can use it in a model, so this is also part of that knowledge that you can gain. Thanks for the tip. So very nice weekend, everybody. Have a good dinner, breakfast, lunch, wherever you are in the world, and see you back on Monday. Have a great weekend, bye-bye.