specific storage

I have a model and very few data and I need to input the specific storage. I realise it is the compressibility so, due to lack of data I have to rely on average values in the literature. My problem is, the literature gives values in several distinc units but not in FEFLOW units 1/m. I have a free water body and several mudflats in my model. Can you please give me the link wheere I can find values on FEFLOW units for these ones?

 

Specific storage (compressibility) follows the standard definitions in hydrogeology.&nbsp;Specific storage describes the change in volumetric water content in an aquifer induced per unit change in hydraulic head under saturated conditions. Along with specific yield, specific storage describes the storage properties of an aquifer. As in unconfined layers specific yield typically exceeds specific storage by far, the influence of this parameter in aquifers with phreatic surfaces is usually negligible.<br> You can find all the parameters described in the online help:<br> http://www.feflow.info/html/help75/feflow/09_Parameters/Material_Properties/flow_parameters.html