unnavigable

But within two years the lake level was such that the river became unnavigable.

Many black holes at once can mean that space becomes unnavigable.

The unnavigable river is used for power production and irrigation.

Waters may be unnavigable because of ice, particularly in winter.

By 1948 the canal was completely unnavigable but it did remain in water.

He said it was unnavigable, being filled with ice.

This creek was deep and clear, but it was absolutely unnavigable.

They saw the savage turbulence of the unnavigable rapids below.

The lake has a reputation for periodically powerful, unnavigable storms.

The Price is a small, shallow river and is normally unnavigable.

In 1856, after the river became unnavigable to larger vessels a new township and port were established.

The channel is becoming increasingly unnavigable due to shallow water depths.

When the one chair in the room was at its usual place before the table, the canal was unnavigable.

Public transportation nearly ground to a halt, and at night the visibility was so poor that some parts of London became unnavigable.

Their violence when they are full makes them difficult to control, and they are unnavigable.

Today, the canals are mostly derelict, unnavigable, or used for irrigation.

When the river became unnavigable the buildings usefulness waned and was eventually abandoned.

Another unnamed and unnavigable canal cuts through the northern portion of the island.

Over the centuries sand and silt deposits made the port unnavigable.

High water speed may make a channel unnavigable.

However, the river is extensively used for irrigation and during low water years is wholly unnavigable.

Many were never heard from again; others were presumed lost as vast regions of space became unnavigable.

The remaining six river locks are disused and unnavigable.

In 1967 a trip to the lock showed it unnavigable, but in reasonable condition.

Generally unnavigable, the rivers obstruct rather than encourage movement within the alpine region.