# data[].attributes.location_name
Big Break Regional Shoreline, Big Break Road, Oakley, CA, USA

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Big Break Regional Shoreline, Big Break Road, Oakley, CA, USA

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Big Break Regional Shoreline, Big Break Road, Oakley, CA, USA

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Del Valle Regional Park, Del Valle Road, Livermore, CA, USA

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Del Valle Regional Park, Del Valle Road, Livermore, CA, USA

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Del Valle Regional Park, Del Valle Road, Livermore, CA, USA

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Can hike, camp, and get on the water.

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Cosumnes River Preserve, Franklin Boulevard, Galt, CA, USA

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Cosumnes River Preserve, Franklin Boulevard, Galt, CA, USA

# data[].attributes.subject
Cosumnes River Preserve, Franklin Boulevard, Galt, CA, USA

# data[].attributes.location_name
Cosumnes River Preserve, Franklin Boulevard, Galt, CA, USA

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Cosumnes River Preserve, Franklin Boulevard, Galt, CA, USA

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Cosumnes River Preserve, Franklin Boulevard, Galt, CA, USA

# data[].attributes.location_name
Sycamore Grove Park, Wetmore Road, Livermore, CA, USA

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Sycamore Grove Park, Wetmore Road, Livermore, CA, USA

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Sycamore Grove Park, Wetmore Road, Livermore, CA, USA

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History and Nature. Stream, too. Close to wineries, too. (Turtle pond, too.)

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William Land Regional Park, West Land Park Drive, Sacramento, CA, USA

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William Land Regional Park, West Land Park Drive, Sacramento, CA, USA

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William Land Regional Park, West Land Park Drive, Sacramento, CA, USA

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3800 Land Park Drive

This park with 207.34 developed acres includes the following amenities:

Picnic Areas for small events and large events:

MapQuest Link

Park Use Application (PDF)

Park Use Guide (PDF)

Athletic Field Use Application (PDF)

Athletic Field Use Guide (PDF)

Amenity Guide (PDF)

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This park with 207.34 developed acres includes the following amenities: Picnic Areas for small events and large events: MapQuest Link Park Use Application (PDF) Park Use Guide (PDF) Athletic Field Use Application (PDF) Athletic Field Use Guide (PDF) Amenity Guide (PDF)

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Lake Camanche, Camanche Road, Ione, CA, USA

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Lake Camanche, Camanche Road, Ione, CA, USA

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Lake Camanche, Camanche Road, Ione, CA, USA

# data[].attributes.location_name
Woodward Reservoir Regional Park, 26 Mile Road, Oakdale, CA, USA

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Woodward Reservoir Regional Park, 26 Mile Road, Oakdale, CA, USA

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Woodward Reservoir Regional Park, 26 Mile Road, Oakdale, CA, USA

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A nice relaxing place to explore nature

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Wilder Ranch State Park, Coast Road, Santa Cruz, CA, USA

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Wilder Ranch State Park, Coast Road, Santa Cruz, CA, USA

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Wilder Ranch State Park, Coast Road, Santa Cruz, CA, USA

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Beautiful coast hike or mountain terrain for mountain biking.

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Woodward Community Park, East Woodward Avenue, Manteca, CA, USA

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Woodward Community Park, East Woodward Avenue, Manteca, CA, USA

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Woodward Community Park, East Woodward Avenue, Manteca, CA, USA

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Great place to play sports

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Pardee Lake Recreation, Stony Creek Road, Ione, CA, USA

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Pardee Lake Recreation, Stony Creek Road, Ione, CA, USA

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Pardee Lake Recreation, Stony Creek Road, Ione, CA, USA

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swimming, boating, camping

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New Hogan Parkway, Valley Springs, CA, USA

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New Hogan Parkway, Valley Springs, CA, USA

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New Hogan Parkway, Valley Springs, CA, USA

# data[].attributes.location_name
Sly Park Recreation Area, Sly Park Rd, Pollock Pines, CA, USA

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Sly Park Recreation Area, Sly Park Rd, Pollock Pines, CA, USA

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Sly Park Recreation Area, Sly Park Rd, Pollock Pines, CA, USA

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Show/Hide

Protecting Public Health and Safety

Sly Park Recreation area offers something for everyone! The center piece of SPRA is Jenkinson Lake, providing opportunities to swim, fish, water sk i or take part in a variety of paddle sports activities and rentals. No personal watercraft like SeaDoos are allowed on the lake.

The lake is surrounded by over 9 miles of trails that accommodate hikers, bikers and horses. The trail system winds through thick forested areas and open meadows while closely following the lake shore around the entire perimeter. Perhaps relaxing in the shade is your ideal activity, we have you covered there as well. Scattered throughout the park are a variety of day-use areas which are excellent picnic or cookout locations.

All Day Use Areas are in close proximity to the lake and have access to picnic tables, restrooms and drinking water.

EID Board Declares Free Day Use at Sly Park on Earth Day
EID Board recognizes Sly Park Recreation Area as a valuable resource to our customers, El Dorado County residents, and wider community. Beginning in 2021, Earth Day will be free for day-use access. Camping fees remain in effect, along with all other policies and procedures, and regulations.

4/8/2021 9:45:00 AM

Fuels Reduction Work to Begin at Sly Park Recreation Area/Jenkinson Lake
Starting March 24, work will begin at the park for fuels reduction. The work will include removal of trees to create shaded fuel breaks in the areas where mastication and thinning work has already been completed. The work will benefit the watershed and increase forest health and resilience.

3/23/2021 4:10:00 PM

Looking for a Great Summer Job?
EID's recreation division is hiring seasonal positions for maintenance/groundskeepers, gatehouse, and rangers.

3/11/2021 3:45:00 PM

More News

How many vehicles can I have in my campsite?

How many people can I have in my campsite?

More FAQs

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Sly Park Recreation Area (SPRA) / Jenkinson Lake

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Show/Hide Protecting Public Health and Safety Sly Park Recreation area offers something for everyone! The center piece of SPRA is Jenkinson Lake, providing opportunities to swim, fish, water sk i or take part in a variety of paddle sports activities and rentals. No personal watercraft like SeaDoos are allowed on the lake.

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Lake Camanche, Camanche Road, Ione, CA, USA

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Lake Camanche, Camanche Road, Ione, CA, USA

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Lake Camanche, Camanche Road, Ione, CA, USA

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Getting out on the Delta- any portion of the Delta

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Great for Hiking

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A lot farther than I thought...sorry.  Great beautiful place for quiet, paddle boarding, and music.

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Oak Grove Regional Park, West Eight Mile Road, Stockton, CA, USA

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Oak Grove Regional Park, West Eight Mile Road, Stockton, CA, USA

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Oak Grove Regional Park, West Eight Mile Road, Stockton, CA, USA

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Beautiful paths and lots of geese, easy walk and not too long of a walk, can be tailored to your needs

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Lodi Lake, West Turner Road, Lodi, CA, USA

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Lodi Lake, West Turner Road, Lodi, CA, USA

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Lodi Lake, West Turner Road, Lodi, CA, USA

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Kayaking, Walk on the nature trail

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Durham Ferry Outdoor Education Center, Airport Way, Manteca, CA, USA

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Durham Ferry Outdoor Education Center, Airport Way, Manteca, CA, USA

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Durham Ferry Outdoor Education Center, Airport Way, Manteca, CA, USA

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Great place to see lots of birds!

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Knights Ferry Recreation Area, Covered Bridge Road, Oakdale, CA, USA

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Knights Ferry Recreation Area, Covered Bridge Road, Oakdale, CA, USA

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Knights Ferry Recreation Area, Covered Bridge Road, Oakdale, CA, USA

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Round Valley Regional Preserve Parking Lot, Marsh Creek Road, Brentwood, CA, USA

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Round Valley Regional Preserve Parking Lot, Marsh Creek Road, Brentwood, CA, USA

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Round Valley Regional Preserve Parking Lot, Marsh Creek Road, Brentwood, CA, USA

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Good spot for a hike with hills. Lissa

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About The Park

The area that is now Round Valley Regional Preserve was once home to California Indians. It was probably a boundary between several different tribal groups, an area where members of East Bay and San Joaquin Valley groups met periodically to trade and socialize. Evidence of Native American use has been uncovered at several archaeological sites within the valley.

Wildflower Photo Guide

The land was purchased in 1873 by Thomas Murphy, an Irish immigrant who established a ranching and farming operation. Murphy's grandson, Jim Murphy, sold the core 700 acres of Round Valley to the East Bay Regional Park District in 1988. It was his wish that the land be preserved in open space for public enjoyment, rather than used for residential development, or, as was once proposed, a refuse disposal site. A few old pieces of farm equipment in the preserve date to the late nineteenth century or early twentieth. Remember that all archaeologic and historic objects in the preserve are protected by law; please leave them undisturbed for others to see.

Park Features

Vegetation

The 2191-acre preserve contains non-native grassland, oak woodland/savannah, shrubland and riparian woodland plant communities. The grassland occurs interspersed with extensive stands of blue oak woodland/savannah. Round Valley itself is primarily annual grassland with valley oak lining the intermittent drainages. Non-native grasses, inadvertently introduced to California by early settlers, comprise the annual grassland flora. The dominant grasses are annual ryegrass, wild oats, soft chess, and ripgut brome, with wild barley, foxtail chess, red brome, silver hairgrass, and annual bluegrass occurring in lesser amounts. Native and non-native wildflowers occur in spring.

The steep, northeastern-facing slopes in the southwestern portion of the preserve support mixed oak woodland and chamise/black sage/manzanita chaparral. Riparian and wetland vegetation consisting of moisture-dependent grasses, rushes, herbs, shrubs, and/or trees occur along Round Valley Creek, which is a tributary of Marsh Creek originating in the uplands surrounding Round Valley.

The southwest corner of the preserve supports mixed oak woodland containing blue, valley, coast live, interior live, and black oak; California buckeye; and California bay laurel.

Riparian vegetation occurs primarily along Round Valley Creek, which the Miwok Trail parallels beginning about one-half mile from the staging area. The creek flows until late spring or early summer, after which the water pools at intervals along the streamcourse. Tree cover along the banks is sparse; vegetation includes spikerush, sedge, rabbitsfoot grass, watercress, curly dock, monkey flower, and willow.

Wildlife

Round Valley Regional Preserve is habitat for a wide variety of wildlife typical of that found in the East Bay Area and also some species more common to the Central Valley. As with all California valley and foothill environments, several species in this area have evolved to survive with only seasonal supplies of water and green vegetation.

Mammals in Round Valley include the California ground squirrel, San Joaquin pocket mouse, Audubon's or desert cottontails, and the endangered San Joaquin kit fox. Round Valley is one of the northern extremes of the kit fox range in California. This shy fox, which is on the Federal and State endangered species lists, lives in the sheltered valley but is subject to isolation and resulting local extinction due to elimination of viable corridors and lack of genetic diversity among the small local population. The kit fox is prey to coyotes and red foxes, and dogs can be a disease vector to the kit fox. Like other scavengers, it is susceptible to secondary poisoning. The challenges faced by the kit fox and its future in the East Bay is one of the primary subjects of the ongoing Alameda-Contra Costa Biodiversity Study, and the Park District is playing a major role in protecting the fox by protecting its habitat in Round Valley.

The preserve is also home to nesting golden eagles, which are protected by State and Federal law. The golden eagles feed on ground squirrels, and with the local burrowing owls, are a state "Species of Special Concern." Burrowing owls nest in ground squirrel burrows and feed on mice and insects.

Ponds and streams in Round Valley support the federally threatened California red-legged frog, western toads, western pond turtles and Pacific tree frogs. These species breed with the onset of winter rains, and burrow into the mud or use rodent holes for hibernation during the dry summer months.

Geology

The bedrock geology of the preserve is Cretaceous Panoche shale and sandstone with deposits of recent alluvium on the surface in valleys and creek drainages. The preserve has small amounts of high-quality soils, located mainly in the level areas along Marsh Creek and in the valley proper. Most of the soil, however, is of a lower quality suitable only for range, wildlife and watershed uses. The Marsh Creek (Mount Diablo) Fault is located about two miles southwest of the preserve. This fault has produced small earthquakes; two recent significant earthquakes (magnitude 5.5 and 5.6) occurred in 1980.

Park Activities

The preserve is open for hiking, horseback riding and bicycling (with some restrictions). The climate at the preserve is arid and temperatures commonly exceed 100 degrees Fahrenheit in the summer months. Be prepared for the summer heat: use sunscreen, wear a hat and loose-fitting clothing, wear good hiking shoes. Drinking water is available at the staging area. Be sure to carry plenty of water with you during your hike.

Camping

One group camping site; 25-person maximum. Camping reservations must be made at least five (5) days in advance. Non-potable water available at the site. There are leveled tent spaces, picnic tables, and a disabled accessible restroom. It's a 3.6-mile walk from the Marsh Creek staging area. Dependent upon weather and trail conditions, two cars can go to the site to carry materials; no shuttling, campers must walk from the staging area. When not in use as a Group Camp, the site is available to the general public for backpacking.

Dogs

Due to the sensitive nature of the wildlife habitat at Round Valley, dogs are not allowed in the park.

Park Accessibility

The restrooms and drinking fountain in the parking lot are wheelchair accessible.

To Reach The Park

From Walnut Creek:
From I-680, exit at Ygnacio Valley Road. Proceed on Ygnacio Valley Road to Clayton Road in Concord and turn right (east). Clayton Road becomes Marsh Creek Road in Clayton. Proceed east on Marsh Creek Road, past Deer Valley Road, until you reach the preserve staging area on your right.

From Brentwood:
Take Walnut Blvd. south to Marsh Creek Road and turn right. When Marsh Creek Road intersects with Camino Diablo Road, bear right and stay on Marsh Creek Road. You will reach the preserve staging area on the left.

Trail Map

Click the map image below to see an enlarged version.

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The area that is now Round Valley Regional Preserve was once home to California Indians. It was probably a boundary between several different tribal groups, an area where members of East Bay and San Joaquin Valley groups met periodically to trade and socialize.