I am looking for recent (2010-2015) time series of river flow in the Gulf of Mexico (GOM). Although the USGS website provides data for major rivers in the northern part of the Gulf, the contributions of Mexican rivers are harder to find. Alternatively, adjusting a theoretical curve may solve the case... any reference on this approach would be appreciated.

It would also be a plus if the dataset is provided in netcdf format.

I will be using this data to run a 5km resolution numerical simulation of the GOM.