siltation

The principal reasons for this were water quality and siltation.

Siltation from human activities has been slowly filling in the lake.

The excessive siltation of the river is an ongoing problem.

When the lake was constructed, steps were taken to prevent siltation.

Again, siltation plays a vital role in whether or not this species will reproduce.

Some populations are in decline where siltation pollution is evident.

The practice accelerates siltation and the rivers will eventually dry up.

Further studies were done to model water quality, siltation, climate effects and change in land quality.

Rapid siltation at Aswan is also a major ongoing problem.

Threats to its habitat include siltation of the freshwater streams.

Active siltation and burial of the vessel remains at the site is visible.

This type of streambed is easily influenced by an increase in siltation.

The idea is to avoid siltation, or build-up of soil and other solid material.

"The forests were cut here, and that causes siltation in streams.

Boaters have noticed the increasing effect of siltation on navigation since 1998.

The lake has become shallow due to siltation and accumulation of plant debris.

These numbers are likely to drastically decrease unless a solution is created to stop the siltation problem.

The main reasons for the decline of N. gladiator are siltation and cover loss.

There is no siltation and loss of reservoir capacity.

There is some siltation and mild to extreme bank erosion in areas due to agriculture.

An essential aspect of survival includes reducing siltation in known habitats.

Siltation now provides a major challenge for the impounded sections of the river in the valley.

However when this is done, extreme amounts of siltation and habitat destruction occurs.

The lake is now shrinking rapidly due to siltation and lack of inflow.

Increases in the amount of stream siltation are also believed to have negative impacts on the species.