The Caonillas River (Spanish: Río Caonillas) is a river of Utuado, Puerto Rico.
| Caonillas River | |
|---|---|
 View of the Caonillas Lake, a reservoir of the Caonillas River. | |
| Etymology | From Spanish "caonillas", plural diminutive of the Taíno word "caona" meaning 'gold'. |
| Native name | Río Caonillas (Spanish) |
| Location | |
| Commonwealth | Puerto Rico |
| Municipality | Utuado |
| Physical characteristics | |
| Source | |
| • location | Meeting of the Jauca and Jayuya Rivers in Paso Palma, Utuado |
| Mouth | |
• location | Dos Bocas Lake |