| 释义 |
- See also
- References
{{Infobox river
| name = Calvas River
| image =
| image_size =
| image_caption =
| source1_location =
| mouth_location =
| subdivision_type1 = Country
| subdivision_name1 = Ecuador
| length =
| source1_elevation =
| mouth_elevation =
| discharge1_avg =
| basin_size =
}}The Calvas River is a river of Ecuador. See also- List of rivers of Ecuador
References- Rand McNally, The New International Atlas, 1993.
- GEOnet Names Server
- [https://web.archive.org/web/20110716153138/http://www.sam.usace.army.mil/en/wra/Ecuador/Ecuador%20WRA%20English.pdf Water Resources Assessment of Ecuador]
{{coord missing|Ecuador}}{{Ecuador-river-stub}} 1 : Rivers of Ecuador |