| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cuyuni River |  | 80,000,000,000 | Essequibo River | 618,000 | 6.3833333333 | -58.6833333333 | Map | ||||
| Konawaruk River | Essequibo River | 5.3000000000 | -58.9166666667 | Map | |||||||
| Mazaruni River | Essequibo River | 560,000 | 6.4166666667 | -58.6333333333 | Map | ||||||
| Rewa River (Guyana) | | Essequibo River | 3.8833333300 | -58.8000000000 | Map | ||||||
| Rupununi |  | Essequibo River | 400,000 | 3.4093366000 | -59.3087991000 | Map |