Del Norters will have a chance to see coho salmon spawn in the Mill Creek Watershed this weekend and next.

The Redwood Parks Conservancy and Redwood National and State Parks are offering free guided trips to view the annual fall migration and salmon spawning this Sunday and on Dec. 16.

The Mill Creek Watershed is regarded as one of California’s most ecologically sensitive areas and a top productive stream for coho salmon, according to a Redwood Parks Conservancy press release. The National Parks Service and California State Parks have been working on several watershed restoration projects for more than 30 years. As habitat conditions improve, more salmon are able to return to the streams of their birth to reproduce, according to the press release.

Under the guidance of Redwood Parks Conservancy volunteer Rick Hiser, participants will carpool in their own vehicles on gravel roads to special viewing locations. Walking over uneven ground for short distances may be required, according to a press release from the nonprofit. Wet weather gear and sturdy hiking shoes are recommended. Polarized glasses and binoculars are suggested, but not required, for best fish viewing. The program will be canceled if it rains or if water clarity is otherwise altered.

The outings are 12:30 p.m.-4 p.m. Dec. 9 and Dec. 16. Space is limited and pre-registration is required. To pre-register, call Hiser at 707-465-6191.