by Eric Ettlinger
Finally some good news from Lagunitas Creek! Last Friday MMWD biologists conducted surveys to get a baseline salmon count ahead of a three-day increase in stream flows. This was the last “Upstream Migration Flow” of the season, and we wanted to document how many salmon spawned in response to the extra water. We were blown away to see significant numbers of salmon spawning throughout the creek before the flow even started. Apparently the 0.07″ of rain we received on Thursday was enough to encourage coho to finally spawn. In total we observed 118 live coho and 45 new coho redds. So far this season we’ve documented 252 coho and 103 coho redds. On Friday we also saw seven spawning steelhead and seven new steelhead redds. Finally, during a partial survey of Walker Creek (the next salmon stream north of Lagunitas Creek), we found the first coho redd and coho carcass of the season.
The Upstream Migration Flow coincided with 0.8″ of rain on Sunday, and we’ll be documenting the salmon response in Lagunitas and Walker Creeks for the rest of the week. By next week we should have a pretty good idea how many salmon survived the last few months and finally spawned.