As a result back currents in the river bring intrusions of brackish water into the lake.

Variability in these figures as well as wind and back currents cause expansion and contraction of the lake over wide areas.

A few yards farther, he reached the submerged slope of a natural levee formed by the sediments and back currents of past floods.

When there is a strong wind blowing to the south the bay can be a meter or so higher than the lake, which causes back currents in the river.

No Turning Back Currents of History Those on both sides of the issue agree that there is no turning back the stream of women into the work force.

Backing Current Controllers "Although the F.A.A. needs to fill only a very limited number of jobs, it is appropriate that former controllers be eligible to fill some of these vacancies," the statement said.