The Yuriba River begins on the northern part of the island, with the mouth bubbling up somewhere in the hills between the mountains Engetsu-san and Inishie-san. Flowing southwards, it runs between Spruce Lane and East Cherry Lane through the Yuriba Forest, where a few homes and businesses abut its banks on one side of the other, most notably, the Sleepyfox Bakery which makes use of the water to power the mill there. Persistent rumors insist that somewhere in the woods is an excellent swimming hole on the river. As it winds southward, the Yuriba River flows betwixt White Lily Road and Sand Lily Road in the village proper, just east of the Village Center and many other businesses.
The Yuriba River is one of the primary sources of fresh water on the island and a popular spot for relaxation and fishing. While the bakery is the largest watermill, there are others along the banks for grinding grain or pumping water for irrigation. Multiple bridges cross over the waters at various points along the river, allowing for east-west egress across it. In the far southern reaches of the isle, the Yuriba River empties into the ocean after passing through a delta filled with Yuriban Mangroves. The delta angles somewhat south-east, with small cliffs abutting the western side where it wore down harder rock. The village is primarily north of the delta, although the Lighthouse is located near where it flows into the waves.
The river is navigable for most of the lower stretches, where it widens and slows slightly, with wetlands and small inlets increasing in number until eventually, at the river delta, tall grasses and waterfowl are commonplace. Canoes and kayaks are most commonly seen; while occasionally a barge may be found, generally speaking most of the river is not wide enough to allow for serious transportation of goods, and suggestions for a system of canals are routinely rebuffed. Approximately in the area of the Fire Station, the river takes a northwest turn, and becomes both narrower and swifter. There are a couple of rapids stretches to the north, though there are no elevation changes worthy of being called cascades. Thrillseekers are generally disappointed, though it is enough of a test for novice kayakers. While heavy spring rains have been known to cause slight increases in the water level, there have not been any major floods in recent village history. However, given the number of residential and commercial properties abutting the river, levels are closely watched during the rainy season, and here and a series of flood stage markers are widely spaced along the river's lower runs to track its progress.