City boundaries were influenced by water and power
Cato Hernández
scours through tons of archives to understand how our region became the way it is today.
Published November 7, 2023 5:00 AM
People at a Los Angeles park with a view of the downtown skyline on Dec. 31, 2021.
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Chris Delmas
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AFP via Getty Images
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Topline:
Just how exactly did we get to the L.A. city and county shape we have today, with 88 cities within L.A. County? We lay out the history. Not surprisingly, much of it began with water.
What does water have to do with it? Everything! In the early 1900s, water was running low. The city of L.A.’s population was growing fast, so they secured water rights to Owens River. The draw of water supply meant many communities sought to be annexed into L.A. city boundaries. When the St. Francis dam failed in 1928, however, other communities decided to become cities themselves.
Why would some place want to be a city? Chalk it up to power, local control and natural resources. Groups will tend to get involved when they want to direct decision making. But L.A. city has commanded a lot of respect in this area, and it’s often been why places have had to make a choice: to either form a city or get sucked up in annexation.
How does Lakewood factor in? When the city formed in 1954, it brought in a new way for communities to operate under cityhood. Instead of building their own services from scratch, they could contract with L.A county to provide them. That model has been successful for many other new cities.
If you’re reading this, there’s a good chance you live in Los Angeles. But do you live in the city of L.A.? An unincorporated area of L.A. County? Or do you actually live in another city entirely, such as Beverly Hills, West Hollywood, Inglewood or Culver City?
There are 88 cities in the county, but not every patch of land under the L.A. County umbrella is a city. Some places have their own police forces. Some don’t. Some have their own fire departments. Some don’t.
Why are things like this? We've been looking into it, and it seems one of the answers is — drum roll — water.
The power of water
More than a hundred years ago, the city of L.A. was already one of the ‘it’ places for development and population growth. Sunshine, open land and a manufacturing boom ruled. Between 1890 and 1900 alone, the city of L.A. more than doubled in size to over 100,000. And it kept doubling in the decades after.
There were other cities around. The city of L.A. was the forerunner, of course, incorporated in 1850, and cities like Pasadena (1886), Santa Monica (1886) and Long Beach (1897) came after. By 1901, there were 12 cities in L.A. County.
But with more people in L.A. came the need for more water. The L.A. River was a reasonably viable water source for the city until about 1900, according to William Deverell, the director of the Huntington-USC Institute on California and the West. To truly become a metropolis, though, city leaders had to get planning.
What you should know
A city is a municipality that has the power to self-govern, meaning they have their own elected leaders, like a mayor and city council. It becomes an incorporated city once a majority of community voters approve it.
For neighborhoods that don’t have locally elected leaders, these areas are unincorporated and under the leadership of the L.A. County Board of Supervisors.
Find out what type of area you live in by putting your address into Mapping L.A.
Civil engineer William Mulholland (yep, that Mulholland), who led the municipal water bureau, was sent to evaluate new and bigger water sources, which is how he came up with the idea of an aqueduct running from Owens Valley in eastern California to Los Angeles.
To do that, L.A. had to secure the rights to the Owens River water, which was a choice that was both fought against and supported. This siphoning, which cost millions of dollars and took years to implement, drained Owens Valley of a vital resource and caused lasting economic and environmental problems.
Panoramic view of the Los Angeles Aqueduct in the Owens Valley near Alabama Hills on November 24, 1928.
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Herald Examiner Collection/Los Angeles Public Library
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The aqueduct exists to this day.
“[It] basically sticks a straw into the Owens River up in the Owens Valley and draws that water 250 miles down to L.A. by gravity,” Deverell said.
But when the aqueduct opened in 1913, it ended not in L.A. but in San Fernando, a fair distance away.
So to get that water to L.A. in an easier way, two years later city leaders annexed most of the San Fernando Valley. This annexation put the aqueduct in incorporated L.A. city boundaries.
Annexation and incorporation
This meant if you lived in the city of L.A, you had access to this water. If you didn’t — well, that was unfortunate. No Owens water for you! And because of a legal provision, officials were not allowed to sell the newly available resource to places outside the city.
So, smaller incorporated cities and unincorporated areas nearby clamored to be annexed by L.A., who were, among many reasons, infatuated by the potential of abundant water access.
The city expanded to include the beach areas, like Venice in 1925, and other areas like Eagle Rock and Hyde Park in 1923. The rush to annex made it seem like the city of L.A. would eventually engulf the entire county.
See annexations in L.A. County
But that came to an end in 1928, when Mullholland’s St. Francis Dam burst, killing nearly 500 people. Annexations pretty much stalled.
“It raised the question in a number of people’s minds whether the city had engineering competence and capability to manage such a large project — in spite of the fact that they built the Owens River Aqueduct,” said Samuel Nelson, a general manager and chief engineer of LADWP, in the historical interview Water for Los Angeles.
People examine the damaged road and washed away railroad track, caused by excess water flowing down the Santa Clara River after the failure of the St. Francis Dam in 1928.
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Security Pacific National Bank Collection/Los Angeles Public Library
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Surrounding cities, including Burbank, Pasadena and L.A., formed the Metropolitan Water District, which jointly funded the Colorado River aqueduct.
From then on, being absorbed by the city of L.A. was out of favor. Instead, areas looked instead to become incorporated cities.
Why become a city in the first place?
It wasn't easy. They had to secure support, which generally meant getting authorization from the county and winning a community vote. They also had to show that the city could stay afloat with taxes and budgets, and provide services like police and fire — a big undertaking.
But if places didn’t become cities, they’d stay under the management of L.A. County, governed by the five-member Board of Supervisors, which would mean a small group of elected leaders making decisions for a vast number of diverse areas stretching from the coast to the Eastside.
And that was problematic as many people didn’t want Big Brother to tell them what to do, according to Tom Sitton, retired curator at the L.A. County Museum of Natural History.
“Usually what you have is a group, an organization or just a group of people who… don’t want the county or anybody else having all of the answers for changing things,” he said.
The Lakewood plan
In 1954, when Lakewood incorporated as an independent municipality, it came up with a different plan, which would be a landmark change. Instead of creating vital services from scratch, it would contract them from county agencies. Since then, 41 other cities have followed that model, including Cerritos, Downey, and South El Monte.
A Lakewood plan city, for example, likely doesn’t have its own police department. Instead, it gets that service from the L.A. County Sheriff’s Department. The same goes for road maintenance and libraries — services contracted from the county.
The city of Lakewood’s website describes how the plan helped communities stop having to pick between resources and local control: It “began with the conviction that unincorporated communities didn’t have to choose between annexation by a big city or building a municipal infrastructure from scratch.”
And it keeps evolving. L.A. County’s newest city is Calabasas, incorporated in 1991. It also follows the Lakewood plan.
So if you ever wondered why you might see LAPD, the Sheriff's Department and, say, Santa Monica PD as you drive around the county — well, now you know.
Inglewood officials are working on a full rewrite of the city map for the first time in nearly 40 years, laying out how they want the city to grow and change for the next two decades.
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Isaiah Murtaugh Barish
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The LA Local
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Topline:
Inglewood officials are working on a full rewrite of the city map for the first time in nearly 40 years, laying out how they want the city to grow and change over the next two decades.
Why now: It’s all part of the ongoing process for Inglewood’s new general plan, the foundational guide that governs things like what kind of buildings can be built where in the city and how they need to look. A draft land-use plan will go before the Inglewood City Council on Tuesday, then go into the environmental impact review process. The new update to the general plan could set the city’s direction until 2050.
Mixed use development and housing: Planners hope to change some of the city’s commercial corridors into mixed-use zones that allow for housing and businesses alongside each other or even stacked on top of each other. Planners are aiming to open up room for new housing and to revitalize some of the city’s flagging business corridors, without changing the city’s existing residential blocks or sacrificing the grocery stores, barbershops and local restaurants that make neighborhoods tick.
Inglewood officials are working on a full rewrite of the city map for the first time in nearly 40 years, laying out how they want the city to grow and change for the next two decades.
Along part of Manchester Boulevard, city planners are setting up an option for developers to rebuild rows of small storefronts with a mix of homes and commercial space. On La Brea Avenue, south of Centinela Avenue, they envision the possibility of dense housing and business blocks as high as six stories.
Jerome Johnson, an Inglewood local, said he’s lived through three decades of change in the city. He recalled watching a “raggedy market” at the corner of La Brea and Centinela make way for the two-story shopping center that’s there today. He said the potential developments around the intersection could be a catch-22.
“There’s a shortage of housing,” Johnson said. “But you don’t want it to turn into New York City.”
It’s all part of the ongoing process for Inglewood’s new general plan, the foundational guide that governs things like what kind of buildings can be built where in the city and how they need to look. A draft land-use plan will go before the Inglewood City Council on Tuesday, then go into the environmental impact review process.
“This is really a historic milestone for the city,” Bernard McCrumby, Inglewood development services director, told The LA Local.
McCrumby said planners are aiming to open up room for new housing and to revitalize some of the city’s flagging business corridors, without changing the city’s existing residential blocks or sacrificing the grocery stores, barbershops and local restaurants that make neighborhoods tick.
“The stadiums and arenas are here, they’re not going anywhere,” McCrumby said. “Now we can plan around those.”
The last time the city did a full update of its general plan was 1987, when horses were still racing at Hollywood Park and the “Showtime” Lakers were winning championships at the Forum. Edward Vincent Jr., the city’s first Black mayor, had only been in office for four years.
The city has made intermittent updates to its planning guidelines since then — notably remapping a band of Inglewood along the Metro K line before it opened — but city documents indicate planners spent the past couple years working on a comprehensive rewrite.
Planners hope to change some of the city’s commercial corridors into mixed-use zones that allow for housing and businesses alongside each other or even stacked on top of each other.
Those zones could go in place along Century Boulevard and Arbor Vitae Street as well as Manchester, Centinela and La Brea.
The rest of the update, McCrumby said, is aimed at lining the city’s zoning regulations up with state law and the city’s current reality on the ground.
City staff held several community meetings over the last year as they put together the draft and still aren’t done gathering feedback.
The next year will see at least one more community meeting and a 45-day public review period, according to city documents. McCrumby said that, with the anchor of the land-use map in place, planners will continue to work on the rest of the general plan, targeting final City Council approval of the plan and accompanying environmental impact report next spring.
You can get all the details on the general plan at nextlevelinglewood.com and attend the City Council meeting at 2 p.m. on Tuesday to give a public comment.
We also want to know what you think of the proposed changes. Email isaiah@thelalocal.org with your questions or thoughts.
Mariana Dale
explores and explains the forces that shape how and what kids learn from kindergarten to high school.
Published July 21, 2026 2:50 PM
The Marshall High School Jazz Band opened the 2026 Los Angeles Unified Opening of Schools event.
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Mariana Dale
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LAist
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Topline:
Los Angeles Unified students showed improvements on the state’s reading, math and science standardized tests for a third consecutive year.
Why now: Superintendent Andrés Chait announced the preliminary results at the annual opening-of-schools address at East L.A.’s Garfield High School— his first as the district’s leader since the board appointed him to the job in June.
“ These are not just numbers on a page,” Chait said to an audience that included about 1,000 principals, administrators and district supporters. “They are the result of your passion, your persistence, your belief in what students can achieve.”
Why it matters: Student achievement, as measured by test scores, plummeted during the pandemic. Los Angeles Unified’s growth in 2025 outpaced the state as test scores exceeded pre-pandemic levels. This year the percentage of students in all grades who met or exceeded the standard are 39.7% for math, 48.3% for English and 32.1% for science.
It’s unclear how this compares to students statewide because those results have yet to be released.
Read on ... for more information from the address. This story will be updated.
Students within the Los Angeles Unified School District showed improvements on state reading, math and science standardized tests for a third consecutive year, district authorities announced Tuesday.
Superintendent Andrés Chait revealed the preliminary results at the annual opening-of-schools address at East L.A.’s Garfield High School— his first as the district’s leader since the board appointed him to the job in June.
“ These are not just numbers on a page,” Chait said to an audience that included about 1,000 principals, administrators and district supporters. “They are the result of your passion, your persistence, your belief in what students can achieve. These are collective accomplishments.
"They reflect the dedication, skill, and commitment of our entire community,” he said.
Jai Gant-Leau, principal of Eagle Tree Continuation High School, said the “back-to-basics” focus of Chait’s speech was a welcome departure from the tone of recent opening addresses.
“We will continue to rise for the outcomes and expectations for the success of our students. That's the message I got,” Gant-Leau said. “Very different than the others where it was a lot of… bells and whistles.”
This year the percentage of students in all grades who met or exceeded the standard are 39.7% for math, 48.3% for English and 32.1% for science. It’s unclear how this compares to students statewide because those results have yet to be released.
“The decisions will be hard, but we cannot lose sight of what defines us,” Chait said. “We are the system that lifts students to opportunity, turns potential into achievement, creates spaces of belonging, healing, growth.”
This is a developing story and will be updated.
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Cato Hernández
covers important issues that affect the everyday lives of Southern Californians.
Published July 21, 2026 2:41 PM
The program will focus on homes that survived the Eaton Fire.
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Mario Tama
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Getty Images
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Topline:
Altadena residents with homes that survived the Eaton Fire will soon have a chance at getting their soil cleaned up. The L.A. County Board of Supervisors voted unanimously Tuesday to approve a new remediation program focused on lead contamination.
Didn’t this already happen? The federal government previously remediated properties where homes burned, although that thoroughness has been scrutinized. Helen Chavez Garcia, a spokesperson for Supervisor Kathryn Barger, said the county’s new program will be for properties that are still-standing, to help residents facing insurance obstacles.
What we know: The program will use $3 million of state and county funds for administrative and remediation costs. It will prioritize applicants who live with pregnant women or children under 6 years old. These groups face serious health risks with lead exposure.
What’s next: The program structure is being figured out, but it will be under the L.A. County Development Authority. A cohort of community organizations and researchers are helping design it. That's expected to launch this fall.
Lucas Brady Woods
covers the weather and disasters, among other climate and science topics.
Published July 21, 2026 2:37 PM
A beach vendor takes a break under the Santa Monica Pier last week. More heat is in store for Southern California this week and into next.
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Mario Tama
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Getty Images
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Topline:
A heat advisory is in place for much of Southern California from 10 a.m. Wednesday through Monday.
The heat: Temperatures are expected to climb steadily this week. Inland valleys in L.A., Riverside and San Bernardino counties will see highs between the mid-90s and about 105 degrees. Areas closer to the coast, including downtown Los Angeles and most of Orange County, will hit the 90s, while beaches hover mostly in the upper 70s. Humidity also continues to add to the discomfort, making it harder to cool down.
Fire risk: Despite higher-than-normal humidity, a combination of dry brush and wind will also increase the likelihood of fires sparking in some places. The risk will be concentrated in places prone to high winds, including parts of the 5 Freeway corridor in northern L.A. County, especially around the Grapevine, and southern Santa Barbara County.
Beach conditions: Forecasters expect dangerously large waves and strong rip currents to persist through the weekend along the Southern California coast.
Read on … to learn more about what’s driving these uncomfortable conditions.
We hope you’ve gotten used to the hot weather, because it’s going to be here for a while.
The National Weather Service has issued yet another heat advisory for much of Southern California, less than a week after other high-temperature warnings were lifted.
This week’s advisory will be in place from 10 a.m. Wednesday through Monday. Forecasters expect temperatures to climb steadily over the course of Wednesday and Thursday.
The San Fernando Valley, San Gabriel Valley and other inland areas in L.A., as well as Riverside and San Bernardino counties, will likely see highs ranging from the mid-90s to about 105 degrees. Areas closer to the coast, including downtown Los Angeles and much of Orange County, will hit the 90s. Beaches will hover mostly in the upper 70s.
Humidity will also add to the discomfort. Even though it’s decreasing slightly, it makes cooling down harder, especially at night.
People who work outdoors or do not have air conditioning are especially at risk from the heat and humidity, along with people over 65, young children and other sensitive populations.
Making sense of heat forecasts
Southern Californians are no strangers to hot weather in the summer, but heat waves are getting hotter, longer and more frequent as the climate changes.
So you should know the words forecasters use to describe these weather events — and the risks they pose.
Heat advisory: Advisories are issued when temperatures are expected to be hot enough to cause discomfort and potentially lead to heat-related illnesses, especially for more vulnerable populations like young children and the elderly.
Extreme heat watch: Watches are essentially forecasts for upcoming periods of extreme heat. Forecasters say heat watches often cover wide areas and will be revised into more focused warnings and advisories as conditions become clearer over time. Watches are a good time to prepare for extreme heat.
Extreme heat warning: Warnings are issued when heat levels are or will likely become extremely dangerous. Under extreme heat warnings, it's a good idea to avoid strenuous outdoor activity, stay hydrated and help loved ones and pets stay cool.
Forecasters are warning that conditions are ripe for fires, driven by a combination of wind and dry vegetation.
Southern California hasn’t seen much rain recently, despite the humidity, leaving plants with little moisture and turning them into the perfect fuel.
“Even though the air feels kind of moist, we're in the time of season where it doesn't matter. The fuels are dry and they're ready to go,” said NWS meteorologist Ryan Kittell.
Kittel said people should take extra care with anything that could create a spark, and residents in fire-prone areas should remain aware of their surroundings in case a fire starts.
The fire risk is likely to be concentrated in a few specific areas that will experience higher winds than others, including parts of the 5 Freeway corridor in northern L.A. County, especially around the Grapevine, and in southern Santa Barbara County.
For most of the region, though, winds should stay fairly mild.
Dangerous beach conditions
Southern Californians also have to contend with some ocean-specific risks this week.
Forecasters expect dangerously large waves and strong rip currents to hit the coastline at a time when the heat may drive more people to the beach. The conditions are expected to persist through the weekend.
If you decide to head to the beach, it’s a good idea to ask a lifeguard for advice on the conditions before entering the water. It’s also recommended to swim only near occupied lifeguard stands, stay off of rock jetties and avoid turning your back to the waves.
South-facing stretches of coastline will bear the brunt of the swell, which is being driven by two tropical storms churning hundreds of miles away in the Pacific Ocean.
“Those two systems generated the winds and the waves locally that are pushing towards us, and so that's creating elevated surf and some stronger currents than normal,” Kittel said.
The swell is not expected to cause significant coastal flooding as high tides remain relatively low.