Hello,
I am a bit confused on the groundwater interactions in soil Moisture method. depending on the data available i am select specify the GW-SW method to simulate this interaction and i am created catchment nodes with infiltration links to the groundwater node, My question is, should I enter the natural recharge value or it is calculated by the SSM method.

Thanks!
Is it possible to help me? please!

Hello Haya,

In this case, your recharge would already be covered by modeling GW-SW connections. You would not need to enter a natural recharge value.

The natural recharge value is used to represent recharge when you are not modeling GW-SW connections, or to represent recharge that may occur in addition to or from a source other than the groundwater node you are modeling the connection with.

Hope this helps!
-Doug

Thank you for your quick response,can i am please my question explain better
I select specify GW-SW flows but i do not have values about input under the "Groundwater Inflow" and "Groundwater Outflow" tabs in the Inflows and Outflows section for that river or reach, in this case should i select method "Have WEAP model these interactions (deep soil layer of Soil Moisture method catchment)" neither than specify GW-SW flows and connect the groundwater node with catchment only.
Am in these case expressing interactions between surface and groundwater?

Haya,

I believe I understand-

The infiltration and runoff links between your catchment and your river and groundwater represent the inflow to your river and groundwater from the catchment.

These are distinct from model GW-SW connections, which represent the flow between your river and groundwater (which does not directly involve the catchment). Another way to say this is that the runoff/infiltration links from your catchment represent the inflow of water entering your water supply objects, while the GW-SW interactions represent the movement of water between your groundwater and surface water objects. You may use either method of specify flows of model flows- the catchment is not directly involved in this.

-Doug