After I run the SWAT, the result for sediment yield is zero i.e. there is no sediment yield.
what could be the problem and how can I solve this?
I know my project area is sediment prone area and there is prevailing sediment problem.
I have very short time for my project please help me.
Thank you in advance for any help you can provide.
You may need to check the overland and channel sediment. As you know MUSLE is used to calculate the erosion, any zero factor would lead to zero sediment. Without the project files, I couldn’t tell which parameters have problem.
I would suggest focus on one HRU or subbasin. And look into all parameters and outputs.
I’m a graduate student, new SWAT user. I have a question for SWAT calibration. My study area include two hydrological stations in the south central China. In the calibration, the downstream hydrological station has worse results,R^2=0.45 and NSE=-0.15, but the upstream hydrological station has better results, R^2=0.72 and NSE=0.72. I don’t know what happened, and how should I check my model? The result of SWAT check as following.
Groundwater ratio may be low
Lateral flow is greater than groundwater flow, may indicate a problem
Water yield may be excessive
Surface runoff may be excessive
Thanks
Susan
helo Lema i face same problem how did you solve it pls!
My lack of experience in using SWAT leads me to ask every simple questions you can imagine. But still I have to ask because I want to learn. And I hope you will consider my questions.
The sediment problem is solved and thank you for your help. Now I am calibrating SWAT. But the model under estimated the flow. there is low surface flow and high lateral flow. I got the warnings below. I tried to Increase the CN (in .mgt), Sol_AWC(in .sol) and ESCO(in .bsn) but still no significant change/improvement on the ratio.
———————
Surface runoff ratio may be low (< 0.2)
Groundwater ratio may be low
Lateral flow is greater than groundwater flow, may indicate a problem
Water yield may be excessive
Surface runoff may be too low
————————————
The significant under prediction during calibration is for baseflow. The quick flow is more or less sufficiently predicted.
For my area the runoff coefficient is around 20%, so ignore the first warning:)
Check you soil parameters. Increasing CN would definitely increase surface runoff. Also look into KSAT to see if it is too low.
Couldn’t give you more as I’m familiar with your study area. We could talk more with more detailed information.
My Catchment is located in Nepal, South of Kathmandu. I have been assessing the problem regarding the water balance. But, the problem related to lateral flow persists. The lateral flow is very big even much more bigger than surface runoff about six(6) times bigger. I cannot find the solution how to reduce it. I tried to increase the percolation to shallow aquifer and deep percolation as well as increasing the surface runoff but it is still too much. Do you have any idea)
Heard some news about the earthquake in Nepal. Hope you are doing good.
To find solution, it’s better to look into all the model results including all parts of the water balance. What about you send me the project for me to have a look? If it’s not possible, you could also send me the model outputs.
Thank you. by the way I am not from Nepal. But, I have friends from Nepal. I have heard the news about the earthquake and it is really heartbreaking and disturbing. I hope they will recover soon. I am from Ethiopia Studying MSc. in Norway. Below I attached you my project for you to have a look at it. My land use and soil data is not of good quality. I am using online available data any way because I couldn’t get a better data. To include some description; I have only one weather station which records precipitation the temperature data was transferred from the station outside the catchment Many thanks for your. You have been helping me a lot.
Best regards, Lemma MY_SWAT PROJECT.rar
Hi Lemma,
It’s good you are not there.
I’m not sure how you attached the file. I just see the file name but not the file. I don’t think you could actually upload a file in the comment system. If you like, you could send the file through email (hawklorry@gmail.com). I would be happy to look into that for you.
Thanks
Michael
Dear Michael
I am currently working in hydrological model of kabul, afghanistan.
My problem is water balance.
To brief, precipitation occcurs in winter and is stored as snow( it is not printed by SWAT)
which melts during summer and high flow is observed then.more than 75% of the flow is due to snow melt.
At the start of my simulation, the outflow was 5 times that of observed.
I had to increase ET to incur water losses. I put solawc to near 1 and esco to near zero but didnot help me alot so i asssigned snocovmax to 500. only then i could do my calibration.
The problem with water balance is that.
water yield is not equal to the sum of lateral flow, ground water and surface in output.sub on monthly basis but when compared at yearly level, only small deviation observed
The water yield however from output.std doesnot match with from output.rch.
the yield shown in output.std is only half of that shown in output.rch.
I would think SWAT has tried its best to keep the water balance. You may also want to look into the HRU outputs. Maybe you could share the result file to look into further. If a bug is there, we should report to SWAT team.
And Sol_AWC close to 1 is too high for me. You may need look into other aspects to lower down the flow.
Please, I am using the SWAT model to simulate stream flow in a catchment around Lake Victoria in Uganda. But, I have encountered some difficulties in inputing the soil map. The user soil names appearing on the program do not match with the soil names on the attribute table of my soil map. I downloaded the soil map from FAO soils website. Please, can you help me to rectify what to do?
I am trying to model a catchment in south china with rubber trees dominated landuse. I am getting too high lateral flow and excessive water yield. I have been changing all groundwater parameters but I didn’t succeed to fix the problem. Do you have any comment on this? I know rubber trees are acting as water pumps but I don’t know how to implement this fact in SWAT.
Try to check the parameter of the rubber tree in crop database. Also check the ET and water uptake. See if there are any stress on temperature, nitrogen and phosphorus.
I checked the HRU output and apparently my forest landuse (FRSE and FRST) is facing excessive nitrogen stress days. However, since this is a forest, I cannot apply fertilizers. Do have any suggestions?
Best regards
Ned
Hi Ned,
It’s reasonable to adjust the initial nitrogen concentration in the soil which could be done in chm files.
Best
Michael
Hello!
I have a problem with P_STRS modeling. This value always = 0 even without any fertilizers. I don’t understand fortan, but for me “!”-character looks strange in npup.f:
….
uapd = up2 – plantp(j)
! uapd = Min(4. * pltpfr(3,icrop) * bioday, uapd)
uapd = 1.5 * uapd !! luxury p uptake
….
I checked 528_code and didn’t find “!”. Is this difference important?
Sorry to respond late. With latest ver637 code, that line commented with !. It should be done on purpose. If P_STRS is always 0, you should consider to lower the available phosphorus.
I am currently working in hydrological model of Land use land cover change
actually prepared the required format for ARcSWAT 2009. But faced the problem with Input files of Weather Genereator parameters.. the display says that No data value are given for one or more parameters. IN,mWriteInputefiles.Ggn.
I haven’t been using ArcSWAT 2009 in recent years. For the error, it seems some data is missing from your input data. As it didn’t give which column is missing, it’s hard to tell. I would suggest to look into your weather data and make sure everything is in the right format. And then redo the process.
When I checked “Create HRU Feature Class”, the model stuck and shows a error message. If I unchecked it, model goes finely. But I need HRU feature map for my analysis. Few information about my model, area = 308188.00 (hec), no of subbasin: 65, and no of HRU: 2365. I am usig arcGIS 10.2.
Thank you for reply. I attach here the error message I found. Error description is in German language. So, I translate that.
Regards Jakirullah
Hi Jakirullah,
Please send the error message through email (hawklorry@gmail.com). It seems it can’t be attached here.
Best,
Zhiqiang
Hello all
I have used swat checker to identify potential problems with my simulations. I have a five year period of warm-up but in the hydrology tab, i get the message that “Water yield may be excessive” and ” Surface runoff may be excessive”. How do i go about this? I am working at a 13 km2 forested watershed.
I have noticed that others encountered problem with only low surface runoff which was easily rectified.
I am currently working in hydrological model and sediment transport in a Peruvian watershed, I want to know if it is possible install the SWAT 10.3 in the ArcMap 10.4. And if it is possible, how can I do it? Could you give me a suggestion ?
Thank you very much and I really appreciate your help
Hi sir,
Actually i am trying to run the swat simulation after the input tables got created. It is giving a error message-forrt1:erroe(73) : floating divide by zero. So, please give me some solution for this problem as fast as possible.
I am a new SWAT user and currently a researcher at Indian institute of Technology, Bombay. I am facing Some problems with Model, I believe you can help me with following problem.
I want to add soil data into the model. The soil map is at village level. But when I load the shapefile it gives the following error. I am also attaching the screenshots.
Unexpected Program Error Error Call Stack Sequence
CreateOutputFilesDbase LUGridShp.vb Line: 3362
Error Number
5
Description
Value does not fall within the expected range
I am a new SWAT user and currently a researcher at Indian institute of Technology, Bombay. I am facing Some problems with Model, I believe you can help me with following problem.
I want to add soil data into the model. The soil map is at village level. But when I load the shapefile it gives the following error. I am also attaching the screenshots.
Unexpected Program Error Error Call Stack Sequence
CreateOutputFilesDbase LUGridShp.vb Line: 3362
Error Number
5
Description
Value does not fall within the expected range
I am using SWAT for hydrological modelling & sediment in highland agricultural area in malaysia.
Model ran succesfully but the water yield too low,
Streamflow/precip=0.09!
Total area is 179km2, 1 weather stn & 6 rainfall stns.
I tried many things:
– change CN, sol_awc, gw parameters
– i did swat cup but best nse is still -0.3
– it has been going on for almost 8 mths now
Is it because of no weather stn & rainfall stn insufficient??
0.09 is not low to me. Check the water balance using the SWAT_Check. It’s either ET or percolation. For your NSE, compare your flow data with precipitation data and see if the response is reasonable. Use reasonable part for your calibration.
Dear Michael,
I am facing some problems regarding my weather data. I have temperature, precipitation, solar radiation, wind speed and humidity data. Only my temperature and precipitation data work, for the rest of the data I get an error like this “forrtl: severe: input conversion error, unit 137, file F:\Masterarbeit\Projects\Project_26_11_copy\Scenarios\Default\TxtInOut\slr.slr” when running SWAT.
Interestingly, if I only use data from just one station (any station) instead of data from multiple stations, I can also include solar radiation, wind speed and humidity data without any error.
I couldn’t find any useful information on this error online so far, do you have an idea?
It would be great if you can help me out, I would really appreciate it.
All the best,
Johannes
It’s usually caused by the wrong format in the climate file. Try to open slr.slr in a text editor and check if all the lines are in same width. If not, change them to proper format. You could also send me the file (hawklorry@gmail.com).
Hi Michael,
you were right. I changed the format from -0099.000 to -00.99.00 and now it works! Thank you very much for your help, that’s really nice of you. Do you have an idea where this error comes from and how to avoid it?
Best,
Johannes
Hi Johannes,
It would be a bug in the ArcSWAT. For some reason, they use different formats. I have created a video my youtube channel https://youtu.be/J-Q9cY1Cw3E. Feel free to subscribe and give comments.
Cheers,
Michael
Hi Michael,
thank you very much for creating the video.
Cheers,
Johannes
Hi Michael,
I am new to SWAT modelling.
I got the ArcSWAT set up files from Client which is in SWAT2012.exe Revision 591 is packaged with ArcSWAT 2012.10_1.8 version files.
But I have the only free version (QSWAT+QGIS) to use here and latest ArcGIS 10.5 also.
My query is as follows:
1. is it possible to open the relevant files or equivalent ones in QSWAT/QGIS to get the equivalent model set up in QSWAT? I tried to get up to the delineation of the watershed using their DEM and river network. But not possible to use the outlet points. Then stuck up at HRU stage. Not able to use the land use and soil files from their model set up files.
2. Is there ArcSWAT version compatible for 10.5 ArcGIS version available? if not when this is going to be released?
3. If I install 10.4 ArcGIS and corresponding ArcSWAT version, can I able to open the above set up (2012, 10.1 version)? If so, I can look for 10.4 license file with the client.
4. Is there any conversion tool available to convert the ArcSWAT set up into QSWAT version?
1. I think the answer is yes. I’d suggest you to contact the author of QSWAT Chris George .
2. It seems there is no ArcSWAT for ArcGIS 10.5. The SWAT team will shift to QSWAT in the future as it’s fee and easier to maintain.
3. I’d think so. They may upgrade your database to a latest version.
4. I don’t think so. Please contact the author of QSWAT Chris George .
Hi Micheal,
I am calibrating a basin in Nepal. I wanted to check my water balance considering snowfall. How would I do that in Swat. Also swat check shows my surface run off is low and water yield may be excessive. I have tried solving this problem but while i tried solving this issue my Nash-Sutcliffe and R2 decreases. What should i do with this issue.
Precipitation 525.4mm
Snow fall 114.87mm
Snow melt 54.93mm
Sublimation 27.84mm
Surface Run off 2.63mm
Lateral Soil 150.79mm
Ground Water (Shallow AQ) 180.78mm
REVAP 23.87mm
Deep AQ recharge 96.09m
Total AQ recharge 300.93mm
Total water yield 334.20mm
Percolation out of soil 300.93mm
Actual evapotranspiration 101.3mm
Potential evapotranspiration 265.2mm
Transmission losses 0mm
hi iam ashenafi nigusie from Ethiopia
I use swat for investigation of LULC Change impact of river flow using Swat model, but when run simulation for swat model ,the set up swat run is not say database/schema_full.ini file doesn’t exist how i can solve it.
Hi,
I’m a graduate student. I’m trying to compile SWAT-670 source code in Linux base. But, I am getting fatal error message as “Fatal Error: Can’t open module file ‘parm.mod’ for reading at (1): No such file or directory
compilation terminated.”
Do I have basic error?, have anyone guide me on this?
I am using gfortran.
I have found the mistake. Thanks
Hi Sir,
I’m currently a graduate student and a new QSWAT user. I have encountered a problem with creating my HRUs. I got a message saying “There is no crop or soil data for the upslape of channel 346 in Subbasin 1 (and perhaps others)”. Could you kindly assist me?
Michael Yu 
Hello Dear,
I face these problems while working on SWAT2012.
After I run the SWAT, the result for sediment yield is zero i.e. there is no sediment yield.
what could be the problem and how can I solve this?
I know my project area is sediment prone area and there is prevailing sediment problem.
I have very short time for my project please help me.
Thank you in advance for any help you can provide.
Best regards,
Lemma
Hi Lemma,
You may need to check the overland and channel sediment. As you know MUSLE is used to calculate the erosion, any zero factor would lead to zero sediment. Without the project files, I couldn’t tell which parameters have problem.
I would suggest focus on one HRU or subbasin. And look into all parameters and outputs.
Good Luck
Michael
Hi zhiqiangyu,
I’m a graduate student, new SWAT user. I have a question for SWAT calibration. My study area include two hydrological stations in the south central China. In the calibration, the downstream hydrological station has worse results,R^2=0.45 and NSE=-0.15, but the upstream hydrological station has better results, R^2=0.72 and NSE=0.72. I don’t know what happened, and how should I check my model? The result of SWAT check as following.
Groundwater ratio may be low
Lateral flow is greater than groundwater flow, may indicate a problem
Water yield may be excessive
Surface runoff may be excessive
Thanks
Susan
helo Lema i face same problem how did you solve it pls!
Hi Michael Yu,
My lack of experience in using SWAT leads me to ask every simple questions you can imagine. But still I have to ask because I want to learn. And I hope you will consider my questions.
The sediment problem is solved and thank you for your help. Now I am calibrating SWAT. But the model under estimated the flow. there is low surface flow and high lateral flow. I got the warnings below. I tried to Increase the CN (in .mgt), Sol_AWC(in .sol) and ESCO(in .bsn) but still no significant change/improvement on the ratio.
———————
Surface runoff ratio may be low (< 0.2)
Groundwater ratio may be low
Lateral flow is greater than groundwater flow, may indicate a problem
Water yield may be excessive
Surface runoff may be too low
————————————
The significant under prediction during calibration is for baseflow. The quick flow is more or less sufficiently predicted.
Do you have suggestion)
Thank you.
Lemma
Hi Lemma,
For my area the runoff coefficient is around 20%, so ignore the first warning:)
Check you soil parameters. Increasing CN would definitely increase surface runoff. Also look into KSAT to see if it is too low.
Couldn’t give you more as I’m familiar with your study area. We could talk more with more detailed information.
Good Luck!
Michael
Hi Mr YU, where I can download the SWAT OUTPUT VIEWER software?
Hi friend, the software could be downloaded at my post at https://zhiqiangyu.wordpress.com/2016/04/09/an-interface-to-quickly-view-swat-ouputs/. Hope you find it’s helpful for your research. Best.
Hi Lema,
I am facing following errors in my SWAT model, Please help me solve these.
Surface runoff ratio may be high (> 0.8)
Groundwater ratio may be low
Lateral flow is greater than groundwater flow, may indicate a problem
Hi Michael Yu,
My Catchment is located in Nepal, South of Kathmandu. I have been assessing the problem regarding the water balance. But, the problem related to lateral flow persists. The lateral flow is very big even much more bigger than surface runoff about six(6) times bigger. I cannot find the solution how to reduce it. I tried to increase the percolation to shallow aquifer and deep percolation as well as increasing the surface runoff but it is still too much. Do you have any idea)
Thank you.
Lemma
Hi Lemma,
Heard some news about the earthquake in Nepal. Hope you are doing good.
To find solution, it’s better to look into all the model results including all parts of the water balance. What about you send me the project for me to have a look? If it’s not possible, you could also send me the model outputs.
Thanks
Michael
Hi Michael,
Thank you. by the way I am not from Nepal. But, I have friends from Nepal. I have heard the news about the earthquake and it is really heartbreaking and disturbing. I hope they will recover soon. I am from Ethiopia Studying MSc. in Norway. Below I attached you my project for you to have a look at it. My land use and soil data is not of good quality. I am using online available data any way because I couldn’t get a better data. To include some description; I have only one weather station which records precipitation the temperature data was transferred from the station outside the catchment Many thanks for your. You have been helping me a lot.
Best regards, Lemma MY_SWAT PROJECT.rar
Hi Lemma,
It’s good you are not there.
I’m not sure how you attached the file. I just see the file name but not the file. I don’t think you could actually upload a file in the comment system. If you like, you could send the file through email (hawklorry@gmail.com). I would be happy to look into that for you.
Thanks
Michael
Dear Michael
I am currently working in hydrological model of kabul, afghanistan.
My problem is water balance.
To brief, precipitation occcurs in winter and is stored as snow( it is not printed by SWAT)
which melts during summer and high flow is observed then.more than 75% of the flow is due to snow melt.
At the start of my simulation, the outflow was 5 times that of observed.
I had to increase ET to incur water losses. I put solawc to near 1 and esco to near zero but didnot help me alot so i asssigned snocovmax to 500. only then i could do my calibration.
The problem with water balance is that.
water yield is not equal to the sum of lateral flow, ground water and surface in output.sub on monthly basis but when compared at yearly level, only small deviation observed
The water yield however from output.std doesnot match with from output.rch.
the yield shown in output.std is only half of that shown in output.rch.
Thanks
Shiva
Hi Shiva,
I would think SWAT has tried its best to keep the water balance. You may also want to look into the HRU outputs. Maybe you could share the result file to look into further. If a bug is there, we should report to SWAT team.
And Sol_AWC close to 1 is too high for me. You may need look into other aspects to lower down the flow.
Thanks
Shiva
Dear Michael
Is it not amazing why SWAT wont print Snowpack and sublimation?
How would one check water balance in a snowfed catchment?
I want to share my result files.
How may i do that
Thanks
Shiva
Dear Michael
The only way could lower flow so far as i know
1. ET for which i had to increase sol_awc ,decrease esco
2. I have to increase snocovmx which increased ET as sublimation
I used hargreaves as method of ET
My ppt 512 mm
Yield – 200 mm
area – 67500 km2
Hello,
Good day to you.
Please, I am using the SWAT model to simulate stream flow in a catchment around Lake Victoria in Uganda. But, I have encountered some difficulties in inputing the soil map. The user soil names appearing on the program do not match with the soil names on the attribute table of my soil map. I downloaded the soil map from FAO soils website. Please, can you help me to rectify what to do?
Thank you!
Listowel
Dear Listowel,
If you have your own soil map, you could add the names to the SWAT database. We could talk more on that.
Regards
Michael
Hi Michael,
I am trying to model a catchment in south china with rubber trees dominated landuse. I am getting too high lateral flow and excessive water yield. I have been changing all groundwater parameters but I didn’t succeed to fix the problem. Do you have any comment on this? I know rubber trees are acting as water pumps but I don’t know how to implement this fact in SWAT.
Thanks
Ned
Hi Ned,
Try to check the parameter of the rubber tree in crop database. Also check the ET and water uptake. See if there are any stress on temperature, nitrogen and phosphorus.
Best
Michael
from SWAT output.std :
WATER STRESS DAYS = 14.15
TEMPERATURE STRESS DAYS = 3.05
NITROGEN STRESS DAYS = 49.80
PHOSPHORUS STRESS DAYS = 0.10
So what can I do know about it?
Regards
Ned
Hi Neds,
Apparently the nitrogen is the limiting factor. See if it’s possible to increase the fertilizer.
Best
Michael
Hey Michael,
I checked the HRU output and apparently my forest landuse (FRSE and FRST) is facing excessive nitrogen stress days. However, since this is a forest, I cannot apply fertilizers. Do have any suggestions?
Best regards
Ned
Hi Ned,
It’s reasonable to adjust the initial nitrogen concentration in the soil which could be done in chm files.
Best
Michael
Hello!
I have a problem with P_STRS modeling. This value always = 0 even without any fertilizers. I don’t understand fortan, but for me “!”-character looks strange in npup.f:
….
uapd = up2 – plantp(j)
! uapd = Min(4. * pltpfr(3,icrop) * bioday, uapd)
uapd = 1.5 * uapd !! luxury p uptake
….
I checked 528_code and didn’t find “!”. Is this difference important?
Thank you!
Valeriy
Hi Valeriy,
Sorry to respond late. With latest ver637 code, that line commented with !. It should be done on purpose. If P_STRS is always 0, you should consider to lower the available phosphorus.
Best
Michael
Helloo zhiqiangyu
I am currently working in hydrological model of Land use land cover change
actually prepared the required format for ARcSWAT 2009. But faced the problem with Input files of Weather Genereator parameters.. the display says that No data value are given for one or more parameters. IN,mWriteInputefiles.Ggn.
Would you give me a=help on this
Thanks
Tesfahun
Hi Tesfahun,
I haven’t been using ArcSWAT 2009 in recent years. For the error, it seems some data is missing from your input data. As it didn’t give which column is missing, it’s hard to tell. I would suggest to look into your weather data and make sure everything is in the right format. And then redo the process.
Best
Michael
Hello Zhiqiangyu,
When I checked “Create HRU Feature Class”, the model stuck and shows a error message. If I unchecked it, model goes finely. But I need HRU feature map for my analysis. Few information about my model, area = 308188.00 (hec), no of subbasin: 65, and no of HRU: 2365. I am usig arcGIS 10.2.
Do you know is there any solution of it.
Thanks.
Jakirullah.
Hi Jakirullah,
Useful error message may be given for this error. If you could send the screenshot, I may be able to find some clues.
Best,
Zhiqiang
Hello Zhiqiang,
Thank you for reply. I attach here the error message I found. Error description is in German language. So, I translate that.
Regards Jakirullah
Hi Jakirullah,
Please send the error message through email (hawklorry@gmail.com). It seems it can’t be attached here.
Best,
Zhiqiang
Hello all
I have used swat checker to identify potential problems with my simulations. I have a five year period of warm-up but in the hydrology tab, i get the message that “Water yield may be excessive” and ” Surface runoff may be excessive”. How do i go about this? I am working at a 13 km2 forested watershed.
I have noticed that others encountered problem with only low surface runoff which was easily rectified.
Any help would be deeply appreciated. Thanks
Hello Zhiqiang,
I am currently working in hydrological model and sediment transport in a Peruvian watershed, I want to know if it is possible install the SWAT 10.3 in the ArcMap 10.4. And if it is possible, how can I do it? Could you give me a suggestion ?
Thank you very much and I really appreciate your help
Regard,
Miluska
Hi Miluska,
Based on previous experience, it should be possible. I’d suggest to read my post at https://zhiqiangyu.wordpress.com/2014/01/20/manually-install-arcswat/. Try to use same method to install ArcSWAT 10.3.
Best,
Zhiqiang
Hi sir,
Actually i am trying to run the swat simulation after the input tables got created. It is giving a error message-forrt1:erroe(73) : floating divide by zero. So, please give me some solution for this problem as fast as possible.
Dear Michael,
I am a new SWAT user and currently a researcher at Indian institute of Technology, Bombay. I am facing Some problems with Model, I believe you can help me with following problem.
I want to add soil data into the model. The soil map is at village level. But when I load the shapefile it gives the following error. I am also attaching the screenshots.
Unexpected Program Error Error Call Stack Sequence
CreateOutputFilesDbase LUGridShp.vb Line: 3362
Error Number
5
Description
Value does not fall within the expected range
Regards
Parth Gupta
I am having the similar problem too. I hope we will find the solution.
I am also facing the same problem. Pls help, appreciate that!!!
Did you manage to solve this? If yes pls help me, appreciate that so much.
What problem? Could you send more details?
hello Ian
Have solve the problem please?
Dear Zhiqiang
I am a new SWAT user and currently a researcher at Indian institute of Technology, Bombay. I am facing Some problems with Model, I believe you can help me with following problem.
I want to add soil data into the model. The soil map is at village level. But when I load the shapefile it gives the following error. I am also attaching the screenshots.
Unexpected Program Error Error Call Stack Sequence
CreateOutputFilesDbase LUGridShp.vb Line: 3362
Error Number
5
Description
Value does not fall within the expected range
Regards
Asrat Shanka
Hi Michael,
I am using SWAT for hydrological modelling & sediment in highland agricultural area in malaysia.
Model ran succesfully but the water yield too low,
Streamflow/precip=0.09!
Total area is 179km2, 1 weather stn & 6 rainfall stns.
I tried many things:
– change CN, sol_awc, gw parameters
– i did swat cup but best nse is still -0.3
– it has been going on for almost 8 mths now
Is it because of no weather stn & rainfall stn insufficient??
Thanks
HI Azwin,
0.09 is not low to me. Check the water balance using the SWAT_Check. It’s either ET or percolation. For your NSE, compare your flow data with precipitation data and see if the response is reasonable. Use reasonable part for your calibration.
Hope this helps.
Best,
Michael
Dear Michael,
I am facing some problems regarding my weather data. I have temperature, precipitation, solar radiation, wind speed and humidity data. Only my temperature and precipitation data work, for the rest of the data I get an error like this “forrtl: severe: input conversion error, unit 137, file F:\Masterarbeit\Projects\Project_26_11_copy\Scenarios\Default\TxtInOut\slr.slr” when running SWAT.
Interestingly, if I only use data from just one station (any station) instead of data from multiple stations, I can also include solar radiation, wind speed and humidity data without any error.
I couldn’t find any useful information on this error online so far, do you have an idea?
It would be great if you can help me out, I would really appreciate it.
All the best,
Johannes
Hi Johannes,
It’s usually caused by the wrong format in the climate file. Try to open slr.slr in a text editor and check if all the lines are in same width. If not, change them to proper format. You could also send me the file (hawklorry@gmail.com).
Best,
Michael
Hi Johannes,
To add to previous reply, the empty value -99 should be format as -0099.00 rather than -0099.000. If you see -0099.000, replace them to -0099.00.
Best,
Michael
Hi Michael,
you were right. I changed the format from -0099.000 to -00.99.00 and now it works! Thank you very much for your help, that’s really nice of you. Do you have an idea where this error comes from and how to avoid it?
Best,
Johannes
Hi Johannes,
It would be a bug in the ArcSWAT. For some reason, they use different formats. I have created a video my youtube channel https://youtu.be/J-Q9cY1Cw3E. Feel free to subscribe and give comments.
Cheers,
Michael
Hi Michael,
thank you very much for creating the video.
Cheers,
Johannes
Hi Michael,
I am new to SWAT modelling.
I got the ArcSWAT set up files from Client which is in SWAT2012.exe Revision 591 is packaged with ArcSWAT 2012.10_1.8 version files.
But I have the only free version (QSWAT+QGIS) to use here and latest ArcGIS 10.5 also.
My query is as follows:
1. is it possible to open the relevant files or equivalent ones in QSWAT/QGIS to get the equivalent model set up in QSWAT? I tried to get up to the delineation of the watershed using their DEM and river network. But not possible to use the outlet points. Then stuck up at HRU stage. Not able to use the land use and soil files from their model set up files.
2. Is there ArcSWAT version compatible for 10.5 ArcGIS version available? if not when this is going to be released?
3. If I install 10.4 ArcGIS and corresponding ArcSWAT version, can I able to open the above set up (2012, 10.1 version)? If so, I can look for 10.4 license file with the client.
4. Is there any conversion tool available to convert the ArcSWAT set up into QSWAT version?
Thanks in advance,
Suresh
Hi Suresh,
Thanks for reaching out. For your query:
1. I think the answer is yes. I’d suggest you to contact the author of QSWAT Chris George .
2. It seems there is no ArcSWAT for ArcGIS 10.5. The SWAT team will shift to QSWAT in the future as it’s fee and easier to maintain.
3. I’d think so. They may upgrade your database to a latest version.
4. I don’t think so. Please contact the author of QSWAT Chris George .
Cheers,
Michael
Thanks, Michael.
Hi Micheal,
I am calibrating a basin in Nepal. I wanted to check my water balance considering snowfall. How would I do that in Swat. Also swat check shows my surface run off is low and water yield may be excessive. I have tried solving this problem but while i tried solving this issue my Nash-Sutcliffe and R2 decreases. What should i do with this issue.
Precipitation 525.4mm
Snow fall 114.87mm
Snow melt 54.93mm
Sublimation 27.84mm
Surface Run off 2.63mm
Lateral Soil 150.79mm
Ground Water (Shallow AQ) 180.78mm
REVAP 23.87mm
Deep AQ recharge 96.09m
Total AQ recharge 300.93mm
Total water yield 334.20mm
Percolation out of soil 300.93mm
Actual evapotranspiration 101.3mm
Potential evapotranspiration 265.2mm
Transmission losses 0mm
hi iam ashenafi nigusie from Ethiopia
I use swat for investigation of LULC Change impact of river flow using Swat model, but when run simulation for swat model ,the set up swat run is not say database/schema_full.ini file doesn’t exist how i can solve it.
Hi,
I’m a graduate student. I’m trying to compile SWAT-670 source code in Linux base. But, I am getting fatal error message as “Fatal Error: Can’t open module file ‘parm.mod’ for reading at (1): No such file or directory
compilation terminated.”
Do I have basic error?, have anyone guide me on this?
Which compiler are you using?
I am using gfortran.
I have found the mistake. Thanks
Hi Sir,
I’m currently a graduate student and a new QSWAT user. I have encountered a problem with creating my HRUs. I got a message saying “There is no crop or soil data for the upslape of channel 346 in Subbasin 1 (and perhaps others)”. Could you kindly assist me?
I am also getting the same problem while using SWAT+. Anybody with a solution?
Hi Lemma Tufa,Am glad to see you here on this group.may you send me your address for communication regarding norway .
Thnaks
Alemayehu from Ethiopia