1.
headwaters, source of a river
The place where a river begins, the uppermost part of a stream before it joins other waterways.
川の源流を目指す。
To head for the headwaters of the river.
源流の水は冷たくて澄んでいた。
The water at the headwaters was cold and clear.
登山の途中で源流にたどり着いた。
During the mountain climb, we reached the headwaters.
2.
origin, source, root
The original source or foundation from which something developed. Used figuratively for the origins of a culture, tradition, school of thought, or art form.
日本文化の源流をたどる。
To trace the origins of Japanese culture.
この思想の源流は古代ギリシャにある。
The origin of this philosophy lies in ancient Greece.
現代アートの源流をたどると、印象派にたどり着く。
If you trace modern art to its source, you arrive at Impressionism.
USAGE:
The literal sense (headwaters) is used in geography and outdoor activities. The figurative sense (origin) is more common in writing and intellectual discussion, where it describes tracing something back to its roots.
The verb たどる (to trace, to follow) frequently collocates with 源流 in both senses.
COMMON COLLOCATIONS:
- 源流をたどる: to trace to the source/origin
- 源流域: headwater area
- 文化の源流: the origins of a culture
- 源流釣り: headwater fishing