by Eric Ettlinger
January has arrived and both rainfall and coho salmon numbers remain far below normal in the Lagunitas Creek watershed (see chart). In the last two weeks MMWD biologists counted 15 new redds in the main stem of Lagunitas Creek. On Tuesday a school of 35 adult coho were seen in the “Swimming Hole,” a deep pool in Samuel P. Taylor State Park. That brings the season total to just shy of 100 coho (some of these were likely counted multiple times), which is far below the 400 fish typically seen by early January.
Yesterday MMWD began releasing extra water to provide an “upstream migration flow” for coho salmon. Salmon generally prefer storm runoff for migrating upstream, but on occasion we’ve seen coho increase their spawning activity in response to these water releases. If the extra water doesn’t encourage a surge in coho spawning, there is some light rain in the forecast for late next week that might do the trick. We’ve seen spawning activity spike as late as the last week of January, but hopefully we won’t have to wait that long.