1.   At Pevensey, reclamation of the adjacent estuary had reduced tidal scouring, which had previously kept the river mouth open.

2.   On Romney Marsh, silting of river mouths was worsened by the problem of peat shrinkage.

3.   On the other hand, once clear of the river mouth, he could sail a clear reach for Key Canaka.

4.   Trent believed that they were less than two miles from the river mouth.

5.   Visualising the chart, he calculated the distance to the Makaa river mouth at about twelve miles.

6.   ...the narrowness of the river mouth.

7.   As the drought lowered the levels of the Rio Grande, the consequences were noticed even before the river mouth dried up.

8.   But what I remember most of that day was sailing away from the river mouth in late afternoon.

9.   Coho, or silver, salmon begin schooling off the river mouths in late summer, waiting for fresh water to trigger some long-buried desire to procreate.

10.   Low river flows contribute to the buildup of sand bars at the river mouths, blocking salmon migrations.