However, the Nooksack River system has low instream flows at certain times of the year, making the system inhospitable for fish, and scientists monitoring the Middle Fork have observed redds (salmon nests) being dewatered when the diversion was turned on.
(the Nooksack River system; has; low instream flows at certain times of the year) (the diversion; was turned on; ) (scientists monitoring the Middle Fork; have observed; redds (salmon nests) being dewatered) Context(scientists monitoring the Middle Fork have observed,List([133, 184))):(scientists; monitoring; the Middle Fork) (redds; being dewatered; T:when the diversion was turned on)
scientists monitoring the Middle Fork have observed,List([133, 184))
the Nooksack River system the diversion scientists monitoring the Middle Fork scientists redds
has was turned on have observed monitoring being dewatered
low instream flows at certain times of the year
redds (salmon nests) being dewatered
the Middle Fork
T:when the diversion was turned on