Upcoming Event

  • SAVE THE DATE! Saturday, April 27, 2024, 10am to 2pm
    Chatsworth Nature Preserve Open House

    The event is free!

    Location and Parking: To join the celebration, enter the chain-link fence gate on Valley Circle Blvd., just southwest of the curve where Plummer St. turns into Valley Circle Blvd. Parking is available near the gate along the street's shoulder.
    No bikes, pets, dogs or horses are allowed inside the nature preserve. Do wear tennis shoes or hiking boots, hats, and bring sunscreen and refillable water bottles.

Working Together to Save a Crucial Wildlife Habitat in Los Angeles-San Fernando Valley


We are pledged to preserve the largest remaining natural area in the northwestern San Fernando Valley region of the City of Los Angeles, with an Ecology Pond, seasonal wetlands and vernal pools, grasslands, oak woodlands and savanna, and riparian areas. We are working together to preserve all wildlife, and cultural and archaeological assets.


The CNP Coalition has formed to protect this precious open space as a nature preserve for wildlife and to prevent any development or modifications that will negatively impact the habitat. The long-term vision is to incorporate the CNP within a larger network of wildlife corridors and protected open space.


The Chatsworth Nature Preserve (CNP) is a major City of Los Angeles open space preserve teeming with wildlife. More than 200 species of Birds are on site including, Residents: Greater Roadrunner, California Quail, woodpeckers, herons and egrets; Migrants: Canada Goose, Western Meadowlark, Tricolored Blackbird, and sapsuckers as well as a variety of ducks and shorebirds; Raptors: Ferruginous Hawk, Red-tailed Hawk, Prairie Falcon, Long-eared Owl, and many others. There are notable Amphibians and Reptiles: western spadefoot toad, slender salamander, western skink, ring-necked snake, red racer and much more. The fauna includes large and small Mammals: desert cottontail rabbit, gray fox, coyote, raccoon, and occasional visits of bobcat, cougar and mule deer. Habitats include oak woodlands and savanna, riparian areas, chaparral, grassland, and an Ecology Pond. The seasonal wetlands, and vernal pools, as well as portions of the grasslands and riparian areas are now under threat by a poorly conceived modification project.

Extended list of birds in the CNP
List of amphibians and reptiles in the CNP
Survey of vegetation in the CNP
Los Angeles Times photographs of the CNP

Ringed neck snake, great egret, black headed snake.
Photos by Sophia Wong


Recent History
Former Los Angeles City Councilman Hal Bernson, other community leaders and environmental organizations, worked together to create the "Chatsworth Nature Preserve". In 1994 all 1325 acres became protected under L.A. City Ordinance No. 169723, with limited uses to a Nature Preserve and related scientific studies and education.

DWP 1974 letter regarding ecology pond

Film and TV
Like other picturesque parts of Chatsworth, the Chatsworth Nature Preserve --formerly Chatsworth Lake-- was a popular filming location for movies and TV. The rugged beauty of the regions' rock outcroppings, boulders, canyons, majestic oak trees, grasslands and lake became the cinema backdrop for "B" Westerns or "oaters". Movies filmed on CNP land included The Ten Commandments, Donovan's Brain, The Palomino, Susanna Pass, Sioux City Sue, Man from Rainbow Valley, Out California Way, Home on the Range, Hell's Angels, Tess of the Storm Country, and Three Word Brand. Television filming included The Adventures of Rin Tin Tin and Rin Tin Tin II, as well as the Dukes of Hazard.


CNPC Comments on Santa Susana Trails Master Plan Phase II
December 15, 2017
Expresses support for Trails Master Plan, and offers suggestions for improvement.

CNPC Statement to LA City Planning Opposing Andora Estates
September 20, 2016
Advises LA City Planners that Andora Estates proposed development would destroy CNP's protected wildlife corridor, and warns of faulty EIR biological assessments.

CNPC Statement to LA City Planning Opposing Andora Estates
September 19, 2016
Advises LA City Planners that Andora Estates proposed development would destroy CNP's protected wildlife corridor.

CNPC Letter to DWP Regarding Ecology Pond
July 12, 2016
Asks DWP to keep their commitments regarding the Ecology Pond and related wildlife, addressed to DWP General Manager Marci Edwards.

Tribute to Helen Treend (February 5, 1932 – July 10, 2015)
April, 2016
Honoring the life and passionate environmental activism of Helen Treend who helped lead the fight that saved the nature preserve's lands from development.

DEIR Comment Letter against Andora Estates Proposed Development
April 18, 2016
Addresses detrimental impact of proposed luxury housing development on the Chatsworth Nature Preserve and its wildlife corridor

Statement and call for action against proposed Hidden Creeks Estates housing development.
December 24, 2015

Ecology Pond Essay, Importance of the Chatsworth Nature Preserve Ecology Pond and Proposal for its Preservation
July 30, 2015

Letter to Marcie Edwards, General Manager DWP
July 09, 2015
Addresses DWP's management practices of CNP Ecology Pond and CNP in general

Letter to Anne Dove, Project Manager, National Park Service
June 30, 2015
Rim of the Valley Corridor Draft Special Resource Study (ROV): Comments on Draft Report

Letter to Ronald Nichols, General Manager, Los Angeles Department of Water and Power
August 20, 2013
Addresses issues raised by DWP's proposed modifications to the CNP Ecology Pond

Letter to Los Angeles Country Supervisors Regarding Woolsey Canyon Estates
September 03, 2013
Addresses detrimental environmental impact to CNP and adjacent open areas from proposed residential housing development in nearby Simi Hills

CNP Coalition Delegate and Advisor Affiliations:

Simi Hills Wildlife Observatory, Southwestern Herpetologists Society, California State Parks, California Native Plant Society, Lake Manor Residents, USGS/Western Ecological Research Center, National Park Service.