Data requirements for XPRafts are commensurate with the data availability and output requirements. The model is particularly flexible in its requirements and able to produce satisfactory results with minimum data input.
It would be prudent to state that provided access to a suitable micro-computer was favourable then it would be appropriate to employ XPRafts even for the most straight forward runoff estimate. The input data requirements and run time would be no more intensive than hand computations applying say the Rational Formula.
As more data is collected or becomes available on a catchment, input data can be upgraded to produce more appropriate results taking into account parameters such as gauged rainfall and runoff data, soil infiltration data, hydraulic characteristics, retention basin parameters, dynamic flood routing floodway and pipe systems, separate impervious and pervious overland flow routing etc.