Conclusion

We have introduced basic concepts, theories and methods of inverse problems in groundwater modeling. Both deterministic and stochastic approaches were considered. The basic problem that runs through the whole book is how to overcome or avoid the ill-posedness of inverse solutions. The fundamental way out is to gain sufficient observations, both in quantity and quality, based on predetermined criteria and model applications. It is also important to incorporate all existing geological and hydrogeological information into the inverse solution procedure.