I just finished a four-month binge-read of the first two Thomas Covenant trilogies, and now that I've finished all six books, I'm left with the feeling that one of the rivers is flowing in the wrong direction. It seems that all west/east rivers would need to lead over Landsdrop and empty out into the Sunbirth Sea.
The White River (logically) flows from Revelstone (Glimmermere, Furl Falls) to merge with the Gray River to become the Soulsease. This flows through the Wightwarrens of Mount Thunder and ultimately (via Landsdrop) becomes the Defiles Course through the Sarangrave Flats to empty into the ocean south of Coercri (The Greaves). In two of the books (the first book of both the first and second series?), Covenant travels upstream to reach Revelstone (by boat and then by raft).
The first instance of this (the boat ride from Andelain to Revelstone with Saltheart Foamfollower) is explained by the special Gildenlode keel of the boat:
Standing there, he grasped the tiller. A surge of power flowed through the keel. ... The boat ran smoothly up against the current as if it were being towed by fish.
The following map is from Lord Foul's Bane (nook eReader version):
However, in The Wounded Land, Sunder builds a raft to take himself, Covenant and Linden to Revelstone (via Crystal Stonedown and Andelain) after they leave Mithil Stonedown.
Sunder looked at him, at Linden. "Are you able to swim?" They both nodded. "Then we will await the rising of the River." Coventant blinked the water out of his eyes. Damnation, he muttered. A raft. The idea was a good one. The current of the Mithil would provide a faster pace than anything they could hope to match be traveling overland. And Sunder's raft would give them something to hold onto so that they did not exhaust themselves.
My impression was that Sunder, Hollian and Linden continued rafting from Andelain to Revelstone after they split from Covenant. It is this point that I am confused on.
The following map is from The Wounded Land, which is identical that from White Gold Wielder (nook eReader version):
Later, in White Gold Wielder, Covenant again thinks about rafting to reach Mount Thunder. However, this would be going in the opposite direction as the earlier rafting trip. This trip would make sense (downstream from Revelstone to Andelain):
"Good!" said Covenant. "Two days of rain, and we'll practically be in Andelain." He turned to the First. "It looks like we're not going to be able to build rafts. Can you and Pitchwife support the four of us when the river starts to run?"
Is this explained somewhere, or did I get the rivers mixed up?