Baseflow too low

[Barbara Popczyk]

Dear group,

I calibrated manually WRF-Hydro and I am gaining quite good shape of the hydrograph, by my baseflow is way too small comparing to observations.

 I checked simillar topics on this forum, and increased slope (ChSlp in Route_link.nc file ) and made the last soil layer deeper (-5m in namelist), but it didn't help. 

I will be very grateful for any suggestions how to increase baseflow value.

Best regards!

Here are some settings I am using:

FORC_TYP = 5 (with my own precipitation data)

OVRTSWCRT = 1

CHANRTSWCRT = 1

channel_option = 2

GWBASESWCRT = 0

[Alfred Zhong]

It looks like you've completely disabled baseflow. From the WRF Hydro online documentation about baseflow (https://wrf-hydro.readthedocs.io/en/stable/model-physics.html#conceptual-base-flow-model-description):

The conceptual baseflow model can be turned off (GWBASESWCRT = 0), which means water draining from the soil column in the land surface model will become a sink term (this water will not be returned to the channel and will be a loss from the system). The exponential bucket model can be activated (GWBASESWCRT = 1)