en·do·rhe·ic 
(ĕn′dō-rēĭk)
(ĕn′dō-rēĭk)adj.
Of or relating to a drainage basin that has no outlet, such as the Great Basin or the Jordan River valley.
[ENDO- + Greek rhein, rhe-, to flow; see sreu- in the Appendix of Indo-European roots + -IC.]
en′do·rhei·cal·ly adv.