My brain tells me that the east and west river segments ruins the islands premise, but if you consider two swamps, the Mistmarsh and Gnatmarsh border these river systems, then one well placed flood can make this island even more noticeable! Crazy Zendrelda the fortune teller may be onto something. Those southern cliffs don't seem to sport any ports unlike the bustling port of Hardby up the coast. The Bright Desert (formerly Sulm) with the Brass Hills in the center is likely the highest elevation on average in this hypothetical island. The Duchy is largely plain of course save a section of highland Celadon Forest. Greyhawk seems more like a low land swampy domain nestled in its NW portion shielded by a range of highlands that runs the length of the islands from the Cairn Hill through the mountainous Abbor Alz middle that encircles the desert third. Running with this island idea though, it's fun how the geopolitical nature of this area is unchanged for the most part. I hope someone can explain me wrong about this, because without researching it, I'm sure there can't be a real life instance of an island bordering a lake, a sea and one or more rivers at the same time.
![powerscore expedition to the demonweb pits powerscore expedition to the demonweb pits](https://d1vzi28wh99zvq.cloudfront.net/images/44/17077-thumb140.jpg)
This island encompasses the "port city" of Greyhawk, the Duchy of Urnst and the Bright Desert/BrightLands. Look it at! The Nyr Dyv and Midbay area is the north coast, the meandering Nesser River is the east coast, the Woolly Bay is the south-south west coast and the short Selintan River is the west coast.