The phrase "ancient streams" is correct and usable in written English.
It can be used when referring to streams that have existed for a long time, often in a historical or geographical context.
Example: "The ancient streams carved through the landscape, shaping the valleys we see today."
Alternatives: "old waterways" or "historic rivers".
It is said the Calanques were formed by ancient streams long dried up.
As the regolith thaws, ancient streams will flow again and life will flourish along their ruddy banks.
A full range of dune heterogeneity is inferred: facies interaction between lake and dune environments, the course of ancient streams, dune field/sand sheet relationships, bounding surface geometry and primary strata type distribution.
Researchers think the rover has found a network of ancient streams.
And in the middle of mid-Wales – straddling the counties of Powys, Ceredigion, and Carmarthenshire – is a place described in Welsh folklore as the Green Desert, thanks to its lack of proper roads or civilisation and its abundance of lush blue-green mountains, sloping valleys and ancient streams.
In the middle of mid-Wales straddling the counties of Powys, Ceredigion, and Carmid-Wales straddlingace described in Welsh folklore as the Green Desert, thanks to its lacountiesofer roads or civilization and its abundance of lush blue-green mountains, sloPowysvalleys and anCeredigionand.
When you enter a Japanese family, you are entering into this ancient stream, for better or worse.
The more common case is the underfit stream, in which valley morphology indicates a larger ancient stream (see figure).
In September 2012 Curiosity took pictures of water-transported gravel, meaning that at one time Gale crater was likely the floor of an ancient stream.
The Qanats are proposed to be located along downtown Amman´s wadi (valley), following the footprint of the ancient stream that flowed across the city in the 1930's.
In "The Gulag Archipelago," Solzhenitsyn tells of a work crew in Kolyma who were doing excavations when they came across a frozen-solid, perfectly preserved ancient stream, complete with prehistoric fish and salamanders.
