Colusa County
Dense Fog Advisory issued January 18 at 8:34PM PST until January 19 at 12:00PM PST by NWS Sacramento CA
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Carquinez Strait and Delta, Central and Southern Sacramento Valley, and Northern San Joaquin Valley. * WHEN...Until noon PST Monday. * IMPACTS...Low visibility could make driving conditions hazardous.
Stonyford Office Hours Temporary Change
Starting Jan. 19, the Stonyford Office will be open to the public on Thursdays and Fridays only. Our regular Monday-Friday schedule will resume on Feb. 9.
Road conditions
Please be advised that forest roads are NOT plowed or maintained in winter so driving conditions are hazardous, slippery, and may be impassable. Even with good snow tires and four-wheel drive, less than a foot of snow is enough to get a vehicle stuck!
Chico Seed Orchard pedestrian access
The pedestrian gate is broken so access is limited to the drive-through gate. The drive-through gate is accessible Monday - Friday from 7am-3pm, except on federal holidays. The orchard is closed to the public outside of these hours until the pedestrian gate can be restored.
M10 Road Construction
The M10 road will be closed Monday, Nov. 17- 20, 2025. Closure location is above Fouts Springs near Dixie Glade. Main impacts are to the Letts Lake basin on Grindstone Ranger District. Detour to get to Letts Lake is via the M5 and 17N02 Roads, high clearance vehicle recommended.
Trail 34 on Upper Lake District closed due to unsafe conditions
OHV Trail 34 is closed due to trail tread degradation and rutting that runs 300 feet down the trail. The trail is unsafe due to unstable soil, extremely muddy conditions and increased runoff.
Trail 3 on Grindstone closed due to slide
Trail 85303 (Trail 3) on the Grindstone Ranger District closed due to landslide: Trail 85303 is closed between Trail 85304 and M5 Road for public safety and to protect natural resources. Unstable soil, downed trees and a steep drop off make this trail unsafe for users.
Cedar Camp Campground Closure
Cedar Camp Campground is closed for public safety. Closure is in effect through 6/18/26.
Chico Seed Orchard Public Use and Access Closure
Pets must be on a leash. Fall/winter hours are 7 a.m. - 5 p.m. beginning Nov. 1. Spring/summer hours are 7 a.m. - 7 p.m. A closure is in effect outside of these hours.
Overview
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Campgrounds
- Cedar Camp Campground
- Colusa-sacramento River Sra Campground
- Davis Flat
- Dixie Glade Campground
- Fouts
- Gray Pine Group Campground
- Letts Lake Campground
- Little Stony
- Main Letts Campground
- Mill Creek - Mendocino National Forest
- Mill Creek Campground
- Mill Valley Campground
- North Fork - Mendocino National Forest
- North Fork Campground
- Old Mill Campground
- Saddle Camp Loop Campground
- South Fork Campground - Mendocino National Forest
- Spillway Campground
- Stirrup Campground
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