Thanks to everyone for your advice.
I day hiked about 11 miles today in Henry Coe starting from Hunting Hollow. Had a great time, and ran into more people than all my previous trips put together – several groups of 15+ backpacking or hiking together.
Talking to people – this is a very dry winter at Henry Coe. One Park volunteer suggested that many water sources could be dried up by April!
Though I am confused. The new RAWS on Cordoza Ridge in the park shows 17.14 inches of rain since October 1.
http://tinyurl.com/bpagxer
About 13 inches of that fell between November 27 and December 27, and I could see plenty of evidence for high flows this season in Grizzly Gulch and Coyote Creek.
The USGS Coyote Creek gage 2 miles downstream from Hunting Hollow showed 2nd highest peak flow on record December 23, 2012:
http://tinyurl.com/cx3sjnz
but still … I might have to move my trip up into March.
Will call the Park for advice soon.