Piru Creek is a major

stream A stream is a continuous body of water, body of surface water Current (stream), flowing within the stream bed, bed and bank (geography), banks of a channel (geography), channel. Depending on its location or certain characteristics, a strea ...

, about long, in northern

Los Angeles County Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the most populous county in the United States, with 9,663,345 residents estimated in 2023. Its population is greater than that of 40 individua ...

and eastern

Ventura County, California Ventura County () is a County (United States), county located in Southern California, the southern part of the U.S. state of California. As of the 2020 United States census, 2020 census, the population was 843,843. The largest city is Oxnard, Ca ...

. It is a tributary of the Santa Clara River, the largest stream system in

Southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural List of regions of California, region that generally comprises the southern portion of the U.S. state of California. Its densely populated coastal reg ...

that is still relatively natural. The creek drains an area of about , making it the Santa Clara River's biggest tributary in terms of watershed size.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
Retrieved 2011-03-16. Most of the creek above

Lake Piru Lake Piru () is a reservoir located in Los Padres National Forest and Topatopa Mountains of Ventura County, California, created by the construction in of the Santa Felicia Dam on Piru Creek, which is a tributary of the Santa Clara River. ...

is located in the

Los Padres National Forest Los Padres National Forest is a United States national forest in Southern California, southern and central California. Administered by the United States Forest Service, Los Padres includes most of the mountainous land along the California coast ...

. There are two major

reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...

s on Piru Creek, Lake Piru and Pyramid Lake, which respectively store water for local irrigation and the

California State Water Project The California State Water Project, commonly known as the SWP, is a state water management project in the U.S. state of California under the supervision of the California Department of Water Resources. The SWP is one of the largest public wat ...

Course

Piru Creek originates as several small springs on the north side of Pine Mountain Ridge in the

Santa Ynez Mountains The Santa Ynez Mountains are a portion of the Transverse Ranges, part of the Pacific Coast Ranges of the west coast of North America. It is the westernmost range in the Transverse Ranges. The range is a large fault block of Cenozoic age created ...

, in the Los Padres National Forest. It flows eastwards through a gentle valley, where it is joined by Cedar Creek from the right. After the Cedar Creek confluence the stream turns northeast, receives Sheep Creek from the left, and Mutau Creek from the right. Piru Creek receives Lockwood Creek from the left at Sunset

campground Campsite, campground, and camping pitch are all related terms regarding a place used for camping (an overnight stay in an outdoor area). The usage differs between British English and American English. In British English, a ''campsite'' is an ...

on Lockwood Flat, and flows east into a canyon where the valley walls pull in and rise steeper and higher above the river. The Smith Fork of Piru Creek, with headwaters in the

San Emigdio Mountains The San Emigdio Mountains are a part of the Transverse Ranges in Southern California, extending from Interstate 5 at Lebec and Gorman on the east to Highway 33–166 on the west. They link the Tehachapis and Temblor Range and form the southe ...

, comes in from the left about south of Gorman. Piru Creek then turns sharply southeast and enters the Pyramid Lake reservoir impounded behind Pyramid Dam, which stores imported water from the West Branch of the

California Aqueduct The Governor Edmund G. Brown California Aqueduct is a system of canals, tunnels, and pipelines that conveys water collected from the Sierra Nevada and valleys of Northern and Central California to Southern California. Named after California Gov ...

for Ventura County and Los Angeles County.

Interstate 5 Interstate 5 (I-5) is the main north–south Interstate Highway System, Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the contiguous U.S. from Mexico to Canada. It travels thro ...

runs almost above the east side of the reservoir/former canyon. Below Pyramid Dam, Piru Creek maintains a relatively constant flow due to releases of reservoir water. It turns south and flows through the

Topatopa Mountains The Topatopa Mountains are a mountain range in Ventura County, California, north of Ojai, Santa Paula, and Fillmore. They are part of the Transverse Ranges of Southern California. Etymology A name for the mountains was first inscribed within t ...

via the Piru Gorge and along old route of Hwy 99−Pyramid Dam Road, forming the boundary between Mount Pinos and Saugus Ranger Districts of the

and dropping over Piru Creek Falls. The creek flows south, still along the route of old Hwy 99−Pyramid Dam Road and through Cherry Canyon, to Frenchman's Flat and the confluence with Osito Creek (left). The creek turns sharply to the west entering another gorge, then south through it where it receives from the right Fish Creek of the northeastern Cobblestone Mountain watershed, ephemeral Turtle Creek (right) and Michael Creek (left), and then from the right Agua Blanca Creek of the western and southern Cobblestone Mountain watershed. It crosses the boundary between

and

Ventura County Ventura County () is a county located in the southern part of the U.S. state of California. As of the 2020 census, the population was 843,843. The largest city is Oxnard, and the county seat is the city of Ventura. Ventura County comprises ...

five times before leaving the Los Padres National Forest and being impounded behind Santa Felicia Dam in

, the second reservoir on the creek. Below this point the canyon widens and the creek becomes a wide gravelly

wash Wash or the Wash may refer to: Industry and sanitation * WASH or WaSH, "water, sanitation and hygiene", three related public health issues * Wash (distilling), the liquid produced by the fermentation step in the production of distilled beverages ...

. It reaches the

Santa Clara River Valley The Santa Clara River Valley is a rural, mainly agricultural valley in Ventura County, California Ventura County () is a County (United States), county located in Southern California, the southern part of the U.S. state of California. As of t ...

at the town of Piru, and crosses under State Route 126 to join the Santa Clara River.

History

Thousands of years ago, Native Americans of the Chumash group lived in the area, but by 500 CE, their former territory along Piru Creek had been occupied by the

Tataviam The Tataviam (Kitanemuk: ''people on the south slope'') are a Native American group in Southern California. The ancestral land of the Tataviam people includes northwest present-day Los Angeles County and southern Ventura County, primarily in ...

. It is believed that there were once up to 25 Native American villages on the creek, of which eight have been thoroughly studied. Spanish explorer Don

Gaspar de Portolá Captain Gaspar de Portolá y Rovira (January 1, 1716 – October 10, 1786) was a Spanish Army officer and colonial administrator who served as the first List of governors of California before 1850, governor of the Californias from 1767 to 1770 ...

first traveled up the creek in 1769. In 1839, the

Mexican government The Federal government of Mexico (alternately known as the Government of the Republic or ' or ') is the national government of the United Mexican States, the central government established by its constitution to share sovereignty over the republ ...

granted the

Rancho San Francisco Rancho San Francisco was a land grant in present-day northwestern Los Angeles County and eastern Ventura County, California. It was a grant of by Governor Juan B. Alvarado to Antonio del Valle, a Mexican army officer, in recognition for his se ...

to Antonio del Valle. The

Rancho Camulos Rancho Camulos, now known as Rancho Camulos Museum, is a ranch located in the Santa Clara River Valley east of Piru, California, and just north of the Santa Clara River, in Ventura County, California. It was the home of Ygnacio del Valle, a Ca ...

was created out of Rancho San Francisco land by

Ygnacio del Valle Ygnacio Ramón de Jesus del Valle (July 1, 1808 – 1880) was a Californio ranchero and politician. He owned much of the Santa Clarita Valley and served briefly as Mayor of Los Angeles and as a California State Assemblyman. Early life Del Va ...

in 1853, and included parts of the valleys of Piru Creek and the Santa Clara River. In 1842, traces of

gold Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...

were found on a nearby tributary of the Santa Clara River, Placerita Creek, drawing prospectors to the area. By the late 19th century, prospectors had discovered traces of

calcite Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on ...

on Piru Creek in Lockwood Valley near Frazier Mountain, north of present-day Pyramid Lake. A town called Lexington was platted near the site in 1887 but was never actually developed. In the 1880s

borax The BORAX Experiments were a series of safety experiments on boiling water nuclear reactors conducted by Argonne National Laboratory in the 1950s and 1960s at the National Reactor Testing Station in eastern Idaho.

was also mined in the upper Piru Creek watershed by the Frazier Borate Company. The Frazier Borate Company established the town of Stauffer in the late 1890s. In 1905 the town received its own post office. However, the mines closed soon afterward and the town went into decline, though it was not abandoned completely until 1942. The Russell Borate Mining Company also acquired land in the Piru Creek area in 1907. By 1912, the Russell mine was the only one left in operation. Ultimately, all the mines were abandoned because of competitions from borax operations in

Death Valley Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. It is thought to be the Highest temperature recorded on Earth, hottest place on Earth during summer. Death Valley's Badwat ...

Recreation

Hiking A hike is a long, vigorous walk, usually on trails or footpaths in the countryside. Walking for pleasure developed in Europe during the eighteenth century. Long hikes as part of a religious pilgrimage have existed for a much longer time. "Hi ...

camping Camping is a form of outdoor recreation or outdoor education involving overnight stays with a basic temporary shelter such as a tent. Camping can also include a recreational vehicle, sheltered cabins, a permanent tent, a shelter such as a Bivy bag ...

off-roading Off-roading is the act of driving or riding in a vehicle on unpaved surfaces such as sand, dirt, gravel, riverbeds, mud, snow, rocks, or other natural terrain. Off-roading ranges from casual drives with regular vehicles to competitive events w ...

and

rock climbing Rock climbing is a climbing sports discipline that involves ascending climbing routes, routes consisting of natural rock in an outdoor environment, or on artificial resin climbing walls in a mostly indoor environment. Routes are documented in c ...

are some of the recreational opportunities in the Los Padres National Forest that surrounds much of the Piru's course. One well-known trail follows Piru Creek through the lower part of Piru Gorge from Frenchman's Flat to the confluence with Fish Creek, and it is possible to continue all the way south from there to Lake Piru with much scrambling and wading. The entire hike can require more than two days to complete, and flooding from Piru Creek is a potential danger. In the spring, the stretches of Piru Creek from Pyramid Lake to Lake Piru and from Santa Felicia Dam to the mouth are actually possible to raft and kayak. The first stretch has rapids up to Class IV and includes the challenging section known as Falls Gorge, while the calmer second reach has Class I-II rapids only. Controlled water releases from the two dams provide some regulation of the flow although an effort is made to simulate natural discharges. As a result, the section is usually only runnable after rainfall. From downstream of Pyramid Dam to the Los Angeles-Ventura County line, Piru Creek in various sections is designated a

National Wild and Scenic River The National Wild and Scenic Rivers System was created by the Wild and Scenic Rivers Act of 1968 (Public Law 90-542), enacted by the U.S. Congress to preserve certain rivers with outstanding natural, cultural, and recreational values in a free-f ...

Fishing

At one time

fishing Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment (Freshwater ecosystem, freshwater or Marine ecosystem, marine), but may also be caught from Fish stocking, stocked Body of water, ...

along Piru Creek was a year-round activity. In the present day, the uppermost limit of natural fish spawning in the creek is below Pyramid Dam, where a cement culvert adjoining the remains of Highway 99 creates a

waterfall A waterfall is any point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in seve ...

. Piru Creek was once a popular spot for both

fly fishing Fly fishing is an angling technique that uses an ultra-lightweight lure called an artificial fly, which typically mimics small invertebrates such as flying and aquatic insects to attract and catch fish. Because the mass of the fly lure is in ...

and bait-casting anglers as it contained both wild and hatchery-raised

rainbow trout The rainbow trout (''Oncorhynchus mykiss'') is a species of trout native to cold-water tributary, tributaries of the Pacific Ocean in North America and Asia. The steelhead (sometimes called steelhead trout) is an Fish migration#Classification, ...

, along with

largemouth bass The largemouth bass (''Micropterus nigricans'') is a carnivorous, freshwater fish, freshwater, ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern United States, eastern and central United States, southeastern Canada an ...

. The creek is no longer stocked with trout by the

California Department of Fish and Game The California Department of Fish and Wildlife (CDFW), formerly known as the California Department of Fish and Game (CDFG), is an American state agency under the California Natural Resources Agency. The Department of Fish and Wildlife manages ...

and, due to lack of enforcement from the California Department of Fish and Game, frequent poaching of fish from the creek has reduced both the trout and bass population. Certain spots, posted as "

catch and release Catch and release is a practice within recreational fishing where after capture the fish is Fish hook, unhooked and returned live to the water. Originally adopted in the United Kingdom by Coarse fishing, coarse fishermen to Overfishing, preser ...

" areas and restricted to fishing with barbless, artificial lures, are still somewhat active along a three-mile stretch of the creek from Pyramid Dam to Frenchman's Flat with the best conditions for fishing from January to April (limit of 5 fish per angler). The reach from Pyramid Dam to a small bridge downstream is closed to any fishing.

References

External links