open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear T2D Community, i recently to do some heavy rainfall simulations based on prec radar data of real events (2012-2024) like Broich et al. (2019) [www.researchgate.net/publication/3372237...g_of_Rainfall-Runoff]. For that I use the SCS-CN Method and try to meet measured data at the end of a very urbanized area. I am not able to calibrate anything before every culvert, retentions basin and some pumping stations are integrated into the modle. For that I am looking for some examples to do 3 things in a coherent way: 1) I want to give over the discharge of one sub-catchment area to another (if I am not meeting the measured discharge curve I use them instead) into another. Reason for that is, that study area is very large (~500 lkm²) so I decided to do it in parts and merge them together afterwards. I deepdived into the examples and Forum posts, but i cannot reach my goal coherently (see attached files) What do I need to do, to hand over a unsteady discharge curve. 2) Another topic is the integration of water-level dependend Retention basins. I know the operation scheme for retention basins and pumping stations, but I dont have any clue how to integrate it into the model. Do you have any idea how to integrate both reffering to a distinct water level. I first thought about culverts to define a specific discharge amount, but its not working well. I attached everything with further explanation and hope you can help

Data downloadable: rwth-aachen.sciebo.de/s/DT2CUqv4P6EwVLD

Hi
You probably should have a deep dive into the code to be able to do what you want.
Retention basin management with pumping station could be seen as sources and sink with a variable discharge depending of the water level at one point. This is not already implemented in telemac (because too specific) but not too complex to program if you're familiar with fortran.
For the successive catchment, it's also possible with programming by managing the liquid boundaries but once again there is nothing already available...

Regards

Thanks for the reply c.coulet :)
I have solved 1) by inducing some water near the BC upstream (so they are not dry for the hotstart), then this will be saved as a RESTART File. With this RESTART FILE I am able to introduce a prescribed flowrate (just a small amout of water) for some time to create a dry weather scenario without using CONSTANT ELEVATION (this fills up areas elsewhere in addition and not only in the Riverbed..). The Result illustrates the RESTART File for the heavy rain scenario. Additionally, I could use a Discharge Curve from a 1D hydrological model for the upstream Discharge curve by using a Quasi-steady Hydrograph (inflow.liq-File; just a txt. file) with the Keywords STAGE-DISCHARGE CURVES : 0;1 and LIQUID BOUNDARIES FILE : inflows.liq. Its described here:https://hydro-informatics.com/numerics/telemac/telemac2d-unsteady.html

Now i am facing your suggested approach for the retention basin. I will keep you updated

Have a great day everyone !

Best Regards
Jens