Burnlet

[…] streams often mere burnlets, where a 3-lb. fish has barely room to turn [around].

Source: wiktionary

Loch Katrine was "fed by thousands of tricling rills, meandering burnlets, and scintillant cascades.'" Although it was surrounded by '"thirty-thousand acres of untamed'" territory, the loch was only thirty miles northwest of the swarming and industrializing city of Glasgow.

Source: wiktionary

[...] sky-reflecting pools like tarnished silver buckles, and winding burnlets that wandered down from the hills to join the broad loop of the river that flowed out through Mhoin Mhor to the sea.

Source: wiktionary

[...] water-meadows, of great outcropping rocks as big as houses, and long sweeping grassy aprons scored by burnlets innumerable.

Source: wiktionary