The western borders of Yelap and Caokin are actually the rivers (the black didn't show up well so it's drawn a bit wide) so Aserit has access to the river that lines Yelap. There are minor streams that would branch off into Aserit from the river but I didn't want to get too detailed since that kind of taxed my artistic abilities.<br/>The rivers depicted would be major rivers stream and creeks and such would be expected to be found through out Theiri, Aserit, Paclyn Erucya and Caokin. The only place devoid of water (except for the oasis and the eastern border) would be Nydewin.