The Raging River is a river in Daventry making up a portion of the River Fools.
Background
Graham discovered some pebbles on a beach near a bend in the river.
Sometime following Graham's coronation the Raging River had dried up or was filled in, and the Town of Daventry grew into once had been the Gnome's Isle. Rumplestiltskin built his Gnome's House across the dry river bed outside the town.
Almost two decades later, following earthquakes, droughts, and other disasters that affected daventry, the house had become a rickety shack, outside the crumbling town of Daventry.[1][2]
Still its known that the following year, portions of the Raging River continued to flow or began to flow again. Some who want to vacation in Daventry are known to spend their time suntanning on the castle wall, or swimming in the Raging River![3] The latter is not recommended as many people have lost their lives in its dangerous currents. Which in the past had led to the full river system being known as the River Fools.
Behind the scenes
The Raging River appears specifically the name a portion of river within KQ1AGI. In KQ1SCI the river's name is not mentioned, although it is referred to as being a raging river, a rough river, among other descriptions. The KQ2 Hintbook calls another section where pebbles were found in the Raging River, the 'Dangerous River'.
In the map in the official KQ1 Hintbook, the section known as the raging river passes from the screen with the mushroom, south to the "Dangerous River" section, east to the 'Boulder in Raging River', and south to the 'Bend in Raging River'.
In the original KQ1 on the screen with the mushroom on the island, it is possible to cross the river, by walking across the lower edge of the screen (if Graham's boots are just off the edge of the screen). This is an alternative way to cross over to the island without catching a ride on the condor (but you miss points).
The Raging River is mentioned in Hoyle I, see Hoyle I quotes.