Model D: An unconfined aquifer that is completely within the territory of one state but that is linked hydraulically to a river flowing across an international border (in such cases, the aquifer is always located in the “downstream” state)

Hydrogeological Approach to Transboundary Ground Water
Resources and International Law

19 Amer. Int'l L.R. 201 (2003), p. 204
Gabriel Eckstein & Yoram Eckstein