HEC-HMS | T-3 | How to Set up HEC HMS Model

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October 24, 2019

Watch at: 00:00 / 00:00:20hi everyone today I'm gonna show you how to set up a heck SMS model from the beginning so if you have your basin boundary and other informations like precipitation and the necessary information for setting up this model so you can set up this model so this is our basin boundary at the end of this tutorial I'm going to give you the information you can find the folder in the description of this video you will be able to download this information for setting up your model if you want and you can practice this model and in the future video will show how to prepare this basin boundary from de M data using ArcGIS software so let's start at first I'm going to click on the heck SMS shortcut from the desktop so you can click on it it will open the window you are already familiar with this if you have already installed your IKS MS software on your computer right so at first you have to create and first you have to create your project it's a click on the file and then you can click on new or you can click here is also the same right so I'm clicking here and it is asking for the directory or location where you want to save your model so I'm just clicking here and I am going to the directory that I want it is here right say kms and then I'm selecting this folder you can give you the name of the project folder sorry the tutorial tutto we all three right and we have to select your model units so we have a two unit metric which is SI unit where meter is the unit of length and mineral q4 second is the ruler right so I'm not gonna select this one since in USA it is US customary unit so you can select this one yes customary where the flow rate is in CFS so I'm creating my projects yeah this project is here it is tutorial three so if you click on this there is nothing that means you have to specify your model boundary so from the tutorial - we need three types of components right so the first one is the basin model su see if I click on this component what il see I'm seeing here the basin model manager the Metro logic model manager controller specification for running this model we need this three since this is not a graded model that's why I'm not gonna select the grid regime manager right the first click on this basin model manager this asking that we can create new click on new so you can rename it or you can just give the name as it is not changing the name is to create it and then closets to see your basin model is here guessing model but it is empty there is no boundary of the model so I'm gonna give you this boundary because I already have created this boundary using GIS here sir is there you can click on this and then it can copy all the chef files control C and then find the location where you have created your model right so it is there this tutorial 3 and then C maps you can test here it is there now click on View and then map layers so you'll see this window and then click Add and then navigate to this folder map where you have just copied all the shape files it's a mess and the tutorial 3 and then the maps see we have 4 points we have a stream where sub-watershed and we have watershed as well so I'm just selecting one by one so it is there I can add the sub-watershed it is there I can also add streams this right there I can also add for point means when I created this sub-watershed I just created the outlet of is sub-watershed so there are 1 2 3 4 5 sub watershed and this sub watershed has 5 different outlets right so this is our model boundary since this is basin model we have just specify or basin and this is our 5 sub basin so see from the chef's file what we are observing here so this is the stream link this is upstream and this is the downstream so water of this sub basin will be accumulated here and then it will flow through this channel or a stream and it will be accumulated here and then it will be flowing through the channel at the outlet and same thing will happen for this sub base in water will be accumulated here the outlet and then it will just flow through this stream and it will be accumulated here and then it will also flow through this channel and it will be combined with this flow and then it will be there the outlet so let's start I can just start with creating the sub-basin tool so here you can see if you click here it is sub s in creation tool it is a rich creation tool and it is a reasonable creation tool this Junction creation tool it is diverse in creation tool it is source creation tool and finally you have sink equation tool so all of the tool may not be useful here since we have five sub basin I can click on sub basin creation tool if we click here and then if you click here so sub this in one you can rename it or you can just create so did sub base in one so getting this as sub basin - and this is sub basin 3 this is sub basin for and this is sub-basin 5 right so what we'll have to do next we have to connect with rich or extreme so now click on risk creation tool so I'm clicking here so this is connected from the outlet of sub-base in 1 to the outlet of sub basin - right this is rich one and another witch from the outlet of sub basin 3 - the outlet of sub basin or this is rich - and then sub basin five right so I'm just doing another rich from the outlet of sub-basin T to the outlet and C from the outlet of sub-basin for the outlet of the O basing series the same it may combine here or it may combine at the outlet it is the same it will be added the two flows there and it will produce time series so and see at the end of our model we'll see the simulation resolved so now we have already signed our sub-basin and they've already assigned or rich but now what we have to assign there to assign our junction junction creation tool so here we have one Junction right and then this will be our junction - and here this will be our junction 3 this will be a junction four and at the outlet we have Junction five so why we have added this junction because if you just want to combine the basin flow with the other basins flow then you need a junction right that's why we need a junction creation tool so the thing is that now these are not connected the sub-basin was is not connected to B Junction and the junction is not connected with the rich so the next step is what we have to connect all this sub basin links and the streams together so let's see how can we create our link see if you just expand your sub basin because all the her the elements are listed there by this time you see we have sub this in one to five we have reached 1 to 4 and we have Junction 1 through 5 but the Junction 5 I'm just renaming it you can right-click and then we name it as the outlet since it is the outlet of this watershed I'm just giving the name as outlet it is outlet so when you click on this sub base in one to see you can see the the properties of sub basin you read the area you have to choose different methods they cannot be in a third we have dynamic canopy graded simple canopy and simple canopy so for gradient model you need definitely they do it simple canopy but for this case since our model is lumped model and it is for the first model I am NOT going to select any one and for the surface method we have the same gridded simple surface or simple surface if your model is ingredient you have to select Gradius simple simple surface otherwise you have to select simple surface so I'm not going to select any one of this for this marble and for the loss method because I have discussed all these things in the tutorial 2 they have to select a loss method there are different loss method deficit and constant exponential green and amped right and the graded version of these methods and there are SCS method so I almost accounting and I already discussed that if the simulation time is longer or several years we have to select this soil motion accounting or for lumped model and if you want to just model for a specific storm event then your model is given based model so since I'm going to model the how you can Harvey occurred in 2017 it is at the end of the mountain a ghost over the Houston Texas here in USA so that's why this model is even best model I'll run the model for one week so I'm going to select the SCS curve number yes and then the transformation method because we will use the depth of precipitation as centimeter or incest and then it will convert this depth into discharge or flow rate that's why we need a transformation method so I'm selecting here the Clark unit hydrograph so you can see the theory in the hydrology book or more information and for the base flow method I'm not going to select anything but see there are several method bounded recession constant monthly linear reservoir the linear reservoir method is the most popular method you can select it or the recession in the letter models when I'll set up more complex model than this one so I'll select all this method and I'll show how to run the model if you select all these things on how to estimate the parameters for every methods that we are going to select so I'm not going to select any method for this realization for the base flow so what I have to do I have to know the area of this sub basin so if you use GIS for preparing this basin boundary so you can easily calculate your basin boundary right so I have already calculated this and you will see all the information if you click the download the download link that you can find in the description okay so for connecting this sub basin with the junction one so here you can see I'm just selecting sub-basin one that's why I'm seeing these so what is the downstream HUD logic element so at the downstream of sub-base in one I have Junction 1 if I click here and if I just click anywhere it will be just see it is now connected and if you click on Junction 1 so we are seeing the property of Junction 1 so which one is located at the downstream of Junction wanna quickly here it is the rich one right in to select the rich one that means now the submission one is connected with Junction 1 and the Junction 1 is connected with which one so you have to do this for the rest of the logic elements so now click on the rich one which one is at the downstream it is Junction to select it right and now click on Junction 2 and at the downstream of Junction 2 we have the rich right so this is rich one this is rich to if there is 3 then this is race for so the rich 3 is the downstream of Junction 2 right so if you just click here this one you see the most interesting thing these are not connected these are separate you can just put it here if you put it here even if you just put it here no problem when you just select which one is located at the downstream what will happen see it is automatically connected right so you have to do the same thing for the sub-basin Chi sub base into so the downstream has a logic element is Junction to select Junction to this connected sub-basin 5 or sub basin 3 which one is it located at the downstream it is Junction 3 this connect 8 and 4 sub-basin for the junction four is located at the downstream it is connected or sub-basin 5 the outlet is located at the downstream so this outlet right these are connected and let's connect the other junction and the rich for this side so the junction 3 is connected weed rich - it is connected there is 2 should be connected with Junction for this one it is connected injunction for should be connected beat rich or it is connected the Wyss 4 should be connected with the outlet right see that means all the links are now connected so the model is now continuous there is no link that is not connected with other hydrologic elements okay so for the simplicity I'm just removing the streams here so that you can see clearly yeah right so the next step is to provide the input data for ease of this our logic elements right we already have selected the method for sub-basin one right cannot be method none surface method none the loss method is SES curb number transformation method is clark in cairo graph and base flow metal is man so I already have the area and other information for the area of sub-basin is fourteen point two zero six eight square mile it is there see if you just click on the lost method here so he's asking for initial abstraction in inches carbon number and what is the impervious area impervious area means the percentage of the whole area which is not purpose so for calculating this impervious area you need your swell information you need the land cover information so I will show all that steps in the letter tutorials so that I can easily calculate all these things using GIS and how can you download all the informations from different websites okay so for initial abstraction it is 0.5 and the kerb number is 95 if percentage of impervious is 15% and if you click on the next tab this is the transformation they're asking for the time of concentration you know what is the time of concentration with the time required for any drop of rainfall or precipitation from the remote point of any sub-basin right to flow to the outlet that is the time of concentration and there is storage coefficient it best it depends on the soil information so for this case the time of concentration is 12 hours and storage coefficient is 2 point 2 8 so we are done for the sub-basin 1 so click on the sub-basin to write so you have to select the same method curve number and Clark and try to go up and the Bass Pro method the area for the sub-basin 2 is larger it is thirty seven point two zero two square mile and for the lost method it has initial obstruction 0.5 same for all the sub bases and the curb number is 90 and percentage impervious is 15% so the transformation I have the time for the sub-basin as 14.51 the storage coefficient is 0.2 right we're done it done with this sub-basin and let's do this for sub-basin 3 you have to select the same methods sales curb number clerk in Telegraph and display method has none the area is five point seven four eight last method is same for the initial obstruction 84 curb number and 10 for the impervious you know what about the transformation the time concentration is 5.10 and the storage coefficient is three point nine zero and four sub-basin for select the same method SCS and none for base flow the area is four point eight four four and the loss method is initial apart from 0.5 the curb number is 80 percent is impervious is 15 transformation we have three point seven one and storage coefficient is 3 our for the sub-basin 5 that is draining into the outlet directly select the method SES curve number transformation s Clark in a telegraph base flow as none and then put the value of area which is seventeen point eight zero square law square mile loss method same initial obstruction is 0.5 the curb number is 80 and the percentage in profit is 15 for the transformation method we have done a concentration as nine point five eight and that story's coefficient is seven point one zero so done with all the sub basins we have already put all this sub basin information so the remaining things that we have this rich for each one you click on the rich one it will show the properties of rich one you see the routing method for the rich one we have to select any routing method that they have discussed in the tutorial to so what is a routing so when the water will be accumulated at the outlet of sub-base in one so I have to route this water to the downstream side right so how can I do this I have to route this flow so there are several method since it is hard logic model we have to select hard logic a routing method so lag method is another hurdle achieve routing their kinetic wave their modified puls Muskingum asking them Coons normal Dave's and these are the methods but for simplicity well use Muskingum method because it has only two unknown criteria and for the loss or gain method I am selecting naught and if you click on the routing it's asking for the K value and the X belly but this time you know the x-value renders from 0 to 0.5 so you can find this value from the excel file right so now let me show you where you can find C this is rainfall Harvey XLS if I open this you can find it here the basin model all the information are here and for the rich creation you have all this K and expertise for the for Ritz erasers right okay so there's a pen okay again it's for the rich one the math Kingdom K it is the travel time that means how much time it will take the water from the outlet of sub-base in one to the outlet of sub-base until right it depends on the length of the channel difference or the slope of the channel and other properties so I will show how to calculate this K rather than the X so for any River we just use the average value ranges from 0.3 to 0.4 and then we can take this while calibrating the model so for the rich one the K value is three hour and the Muskingum K is zero point chill for this rich - we have to select the same for Muskingum method and then click on routing it will ask for must become K which is 1 + 4 X is 0.4 and for the this three select the same Muskingum method click on the routing parameter to our 4k in 0.2 or the Muskingum X and the last one but it is not the least risk for choose the most in the method click on routing to for travel time K and 0.2 or the X see I can save the model here so we're done with this so our basing model is perfect so we need two more model what is that the methodological model so click and component and just click on match logic model manager and click new you can change the name I'm not changing here just create so we have methodological model here see you click here it is showing this thing unit is US customary shortwave so if you use any evapotranspiration method like Penman wanted metal so you have to provide the information like shortwave long wave solar angle then the location of your meridian and other things so i'll show all the information on the stet in the complex model so if you are able to run this model and if you're happy team what if you are able to calibrate your model then I'll show you the most complex model so for this case I'm not selecting any local transportation model for this case so I'm selecting only the precipitation hydrograph and for local transportation is non snowmelt mom and si replacing missing value if your precipitation time series has any missing value so the model will be aborted but what you have to do F which is the set to default that means if you have any missing information in your precipitation in the model we'll just assume that your data value is zero then the module will not be aborted so it will continue to run some selecting set to default so if you click on the hydrograph right there is nothing because we haven't created any precipitation gates so what we have to do we have to create a precipitation time series second click on component and then click on time series and Data Manager to click on this see you can create time series for precipitation time series for these chairs it stays temperature radiation wind speed air pressure humidity and all other things sunshine hour so we'll see in the letter tutorials when I use the word transpiration module for but for this case I'm selecting the precipitation click new it is gays one okay time series click here just expand it click on gays one it is asking for the information what type of information since it is not a greater modeling done to provide your latitude or longitude just the data source is minimal entry and what is the unit so for this case I'm using the yes customary there's why it will be incremental inches and what is the data in role that I have so let me check the data fast here if you click on the rainfall tab you will see the rainfall rainfall started here from August 25th right at first hour that means 0 0 or means it is the middle of the night 12:00 a.m. and 1:00 means it is 1 a.m. and we have the one-hour delay interval and that data has limited up to 30th August 2017 after the zero zero hour that means 12 a.m. and you can see this is the graph of the precipitation basically this precipitation is for the horican Harvey right so in this the rain column shows the rainfall in inches so I'm just going to select this rainfall and I'm just copying it so what is the date it is 25th of August 2017 and the running time is one right and the ending time is that it goes 2017 and any time is zero zero hour and I'm just changing the time interval there's one hour and now expand this gaze click here so you have to provide your starting time there is 25th August 2017 the starting our is one hour and the ending time is 30th August 2017 and the ending time is zero zero right if you click on the table it will automatically create the table for you right it is there and if you just here and if you press ctrl T it is there you click graph it will show the graph here this is the hydrograph this is our input forcing it is the precipitation for hiking Harvey that occurred over the Houston area it was like demonstration in spotting was there so now click on this specified hydrograph did you see anything no click on the Met model is there so now you have to click on the basin see it's a basin model miss there include sub basins it is now no if you click on yes then let's see what just happened now click on a specified hydrograph see it included all the five sub basins so if you click here you have to specify the gaze one for sub basin one if you have different gages for different sub basins you have to create different time series so i will also show this type of thing in the letter s' tutorials so for this case i'm assuming that since the basin total base in area the model area is not too large just so i can use the one precipitation gaze for every sub basin seasoning that the precipitation is uniform over this basin sums selecting the same gaze for all the sub water shade right so now my model is almost ready i have my sub basin i have already provided all the sub basin parameters then i already created my time series and i have the met model now based on this input data you have to create another component which is the control specification right it is the controller specification where we have to specify your simulation time starting time date and ending date and time you can rename it or um this thing it as it is so it is their contrast specification click here click on control it is asking for the date and time since I have the precipitation ended up from 25th of August so I'm giving the same date fill if he fails 2017 and it is this one over and then any times 31st 2017 any time is zero zero right it's a time interval so you can easily run your model or five minutes ten minutes anytime you want that you can also run your model or one hour interval so let's see I have the given interval it cannot select any other interval other than this so from one minute to one day you can select any time if you select one minute your model take time if you select the longer time period then it will take less time for this case I'm selecting 15 minutes because I have one hour precipitation data rate analysis okay right so this is my controller specification and I'm just setting the model now if you want to run the model what you have to do you have to click on compute and let's see if tutorial 3 there is nothing now I'll just click this button here compute and then simulation one manager click new so I'm just creating a simulation model right so this is a run one or I can this rename it as test run you can create different combination of France so for test run clicking next it is asking for sub basing so since I I have only one sub basin I'm selecting one if you have different sub basins and if you want to create different combination of rums you can select different one so for this case since I have only one I'm selecting this one and it is also asking for the math model if you have different math model you can say the different one and you can create different combinations of your run right so I'm selecting the control one because my controller specification already specified from good I was 25th - I was 30 right okay finish so now I'll see if we have complete take this step it will have this thing activated so now you want to run it you can right click here and click on compute or it is also there you can click on this bomb button if you click here it will start running so I'm just clicking see with checking and then say since it is only for 5 days the run is completed because I have the 16 gigabyte of RAM the laptop is pretty fast there's my text a fraction of seconds for running this model so if your model simulation is completed successfully you will see here a close button and you can also see here finished computing simulation run so I'm just closing this and for watching your result click on this result tab and then the simulation and click the test one so you can see the global summary you click on the global summary it will just show you the list of all the hydraulic elements here and all the areas are there you can see only the peak discharge in CFS and the time of discharge for every our logic elements and you can see also the volume in inches closing it and if you click on sub-base in one right you can see the grass graph of what behalf of the runoff at the outlet of sub-basin one here see so the upper part of the graph is showing the hydrograph and the lower one is showing the runoff at the outlet of sub-base in one so see the peak flow is around is 9,000 9,000 CFS right so at the outlet of sub-base into let's see what happens click on sub-basin till series higher than this it is more than 20,000 that means the flow has been accumulated at the outlet of sub-base in - it is a combination of flow sub-basin 1 and sub-basin - you can also click on the sub-basin 3 you will see and the curb since the basin area is very low is like 3500 CFS the peak discharge or sub basin for you can see it is almost same and what will happen at the outlet of the all sub basins that means the outlet so click on outlet you can see several graphs see so this one see if you click on result click on graph properties you can see all the a logic elements that that are draining into the outlet or listed here you can delete all other things the risk for is draining into the outlet I'm deleting it right the sub that's in five is directly draining into the outlet and removing it and also the waste three is also draining into the outlet you can also change the color you can change the color also here you can also change the type or the width of the line click on apply right there refresh it so it is there so this is how you can run a case in this model and you can set off any case in this model from the beginning so this is the most simplest model that I have shown you today and if you are interested in this modeling software you can download this practice basin boundary and the basin information and you can practice this model first and then in the lateral videos I'd show how to download the observe streamflow data from the website and then how to create time series and how to calibrate model and if you have any difficulties while running this model or if you have any trouble with running this model you can just let me know you can put your comments or you can just directly ask me caution if you have any opportunity so I will be happy to answer all of your questions good for running this module so it looks like a very simple model but when I will show you the more complex model then you need to know the previous steps that's why you have to buffer all these things and you can use this type of model for your research so I'm just ending my tutorial here for today and I'll upload different videos later on when I'll make another video I'll let you know so until then thank you very muchWatch at: 00:20 / 00:40 Watch at: 00:40 / 01:00 Watch at: 01:00 / 01:20 Watch at: 01:20 / 01:40 Watch at: 01:40 / 02:00 Watch at: 02:00 / 02:20 Watch at: 02:20 / 02:40 Watch at: 02:40 / 03:00 Watch at: 03:00 / 03:20 Watch at: 03:20 / 03:40 Watch at: 03:40 / 04:00 Watch at: 04:00 / 04:20 Watch at: 04:20 / 04:40 Watch at: 04:40 / 05:00 Watch at: 05:00 / 05:20 Watch at: 05:20 / 05:40 Watch at: 05:40 / 06:00 Watch at: 06:00 / 06:20 Watch at: 06:20 / 06:40 Watch at: 06:40 / 07:00 Watch at: 07:00 / 07:20 Watch at: 07:20 / 07:40 Watch at: 07:40 / 08:00 Watch at: 08:00 / 08:20 Watch at: 08:20 / 08:40 Watch at: 08:40 / 09:00 Watch at: 09:00 / 09:20 Watch at: 09:20 / 09:40 Watch at: 09:40 / 10:00 Watch at: 10:00 / 10:20 Watch at: 10:20 / 10:40 Watch at: 10:40 / 11:00 Watch at: 11:00 / 11:20 Watch at: 11:20 / 11:40 Watch at: 11:40 / 12:00 Watch at: 12:00 / 12:20 Watch at: 12:20 / 12:40 Watch at: 12:40 / 13:00 Watch at: 13:00 / 13:20 Watch at: 13:20 / 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About The Author

Md Arifur Rahmahn

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