What method would you recommend me to carry out a rainfall-runoff analysis with "limited" data (Monthly rainfall [series of 71 years], soil map, LULC map, DEM)? I wanted to use the SCS-CN method but I don't have daily precipitation data.
I recommend you to use The Spatial Processes in Hydrology (SPHY) model as this model has more applicability in hydrological process on flexible scales, under various physiographical and hydroclimatic conditions, by integrating key components from existing and well-tested models: SRM, VIC, HydroS, SWAT, PCR-GLOBWB, SWAP, and HimSim.
For more details, Go through the links: https://pdfs.semanticscholar.org/8c45/6539aaf1f68040a06e1a682dea5cee7315ac.pdf https://www.sphy.nl/tutorials/
You can use TRMM or GPM datasets in case of limited datasets available in your region. Also the following articles may be useful to you for rainfall-runoff analysis:
https://mssanz.org.au/modsim2019/K14/kumari2.pdf
Article Multi-Model Approach to Assess the Dynamics of Hydrologic Co...
Not knowing the purpose of your modeling, and given that you have long term rainfall and other data, I would think a physically-based hydrological model is your best bet.