Answer:
1. the site where two rivers meet - convergence
2. constant, nonstop effects as in a noise or illness - chronic
3. to change the direction of something, e.g., a government or a river - divert
4. sediment (mud, rocks, soil) deposited by flowing rivers or streams - alluvium
5. something found beneath or living under an ocean or sea - submarine
6. a broad, triangular shaped land area at the mouth of a river - delta
Hope this help!!!