A method for determining a plurality of saturation values is provided. The method accessing, by a computing device, data describing a plurality of fluid volume values associated with a reservoir, the plurality of fluid volume values include a plurality of cumulative water volume values and a plurality of cumulative hydrocarbon values, utilizing, by the computing device, the data describing the plurality of fluid volume values to generate ratio values associated with intervals corresponding to depth levels of the reservoir, generating, by the computing device, a fractional flow graphical representation including the ratio values associated with the intervals corresponding to the depth levels of the reservoir, utilizing, by the computing device, the fractional flow graphical representation including the ratio values to determine saturation values associated with the intervals corresponding to the depth levels of the reservoir, and generating a saturation graphical representation including the saturation values.