"extend downstream" is correct and usable in written English.
You can use it to talk about a movement or direction of something, typically a river or a stream, along its course: for example, "The river extended downstream for seven kilometers before finally reaching the ocean."
According to logs characteristics and river morphology, drift accumulations can either extend downstream the bridge pier or they can accumulate totally upstream.
In the time-domain analysis performed to this end, the wake behind the oscillating cantilevered plate is assumed to issue tangentially from the free trailing edge and extend downstream with an undulating form.
The binding would have to extend downstream to far distant pairs, and it is unclear how it would do so in a linear manner irrespective of the time differentials being provided.
The progressive downstream approach also overlaps with temporal comparison because impacts such as sediment depletion may extend downstream over time.
Here, we extend downstream leptin-mediated signal dysregulation, illustrating a decrease in post-SCI POMC protein expression within the ARC, and a substantial increase in NPY expression in the PVN.
Although such 5-end CpG islands commonly extend downstream of the promoter into the transcription unit [ 34], this does not appear to be the case for any of the GABAA subunit genes.
Putative 3'-terminal exons from these genomic projections were extended downstream into intronic or intergenic regions if there was EST evidence of extended UTRs in PACdb [26].
A crag and tail is distinguished from a roche moutonnée by the presence of an elongate, tapered ridge of till extending downstream.
The first wave occurs above the mountain that causes it, with a series of waves of equal horizontal wavelength extending downstream.
This scheme, opposed by residents of the range's western slope, is the first in a series of projects extending downstream in the Colorado River system that may eventually utilize the entire flow of the river.
Wave location suggests a fan-shaped region of ion pickup extending downstream from Io.
