physics

Los Angeles Department of Water and Power

Los Angeles Department of Water and Power is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Los Angeles Department of Water and Power rather than just read about it. In short: The Los Angeles Department of Water and Power (LADWP) is the largest municipal utility in the United States with 8,100 megawatts of electric generating capacity (2021–2022) and delivering an average of 435 million gallons of water per day (487,000 acre-ft per year) to more than four million residents and local businesses in the City of Los Angeles and several adjacent cities and communities in southwestern Los Angel…

Key takeaways

Los Angeles Department of Water and Power belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Los Angeles Department of Water and Power to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Los Angeles Department of Water and Power from memory before moving on to harder problems.

Reference excerpt

The Los Angeles Department of Water and Power (LADWP) is the largest municipal utility in the United States with 8,100 megawatts of electric generating capacity (2021–2022) and delivering an average of 435 million gallons of water per day (487,000 acre-ft per year) to more than four million residents and local businesses in the City of Los Angeles and several adjacent cities and communities in southwestern Los Angeles County, California. It was founded in 1902 to supply water to residents and businesses in the city of Los Angeles and several of its immediately adjacent communities. In 1917, LADWP began to deliver electricity to portions of the city. It has been involved in a number of controversies, including the 1928 St. Francis Dam failure, and written about in critical media portrayals such as those in the books Water and Power and Cadillac Desert.

History

The Los Angeles Department of Water and Power had six names changes since it was established in 1902.

Private operators By the middle of the 19th century, Los Angeles's rapid population growth magnified problems with the city's water distribution system. At that time, a system of open, often polluted ditches, was supplying water for agricultural production but was not suited to provide water to homes. In 1853, the city council rejected as "excessive" a closed-pipe system that would serve homes directly. As a solution, the city allowed "water carriers with jugs and horse-drawn wagons…to serve the city's domestic [water] needs." By 1857 the council decided that the system needed to be updated, granting William G. Dryden franchise rights to provide homes with water through a system of underground water mains. The initial system served only a few homes using a network of wooden pipes. In December 1861, heavy rains destroyed the system and Dryden gave up his franchise. The city attempted contracting out water distribution rights to others, but none of the systems resulting from these contracts were successful. The city's previous attempts to allow others to develop a water system on its behalf prompted the city council to relinquish its rights to the water in the Los Angeles River in 1868. The city of Los Angeles could no longer benefit from their municipal water distribution business. John S. Griffen, Solomon Lazard, and Prudent Beaudry, created the Los Angeles City Water Company, which violated many of the provisions of its lease on the Los Angeles River, including secretly tunneling under the river to extract 150 times as much water as the lease allowed. As the end of the lease drew near in the mid-1890s, popular support began to build for a return to complete municipal control of the local water supply.

Public control

Fred Eaton proposed that tax revenues would enable Los Angeles to provide water to its residents without charging them for the use of water directly. During Eaton's nine-year term as the superintending engineer of the Los Angeles City Water Company, he headed a large expansion of the company's water system. Eaton left his position in 1886 when he was elected City Engineer. In early 1897, city engineers created plans for an updated water system and the Los Angeles City Water Company's lease was not renewed beyond its expiration date, July 21, 1898. In early 1898, talks between the city and the Los Angeles City Water Company began to take over the company's current water system. During negotiations it was decided that the current senior employees of the Los Angeles City Water Company would keep their jobs in order to ensure that the water system could continue to operate. It was not guaranteed that William Mulholland, who took over as superintending engineer after Eaton, would have a position working with the city-owned water system. Mulholland did not produce records the city officials requested during negotiations. It was discovered that neither the requested records nor a map of the water system existed. Mulholland, who was in charge of the non-existent records, claimed that he memorized all necessary information, including the size of every inch of pipe and the age and location of every valve. Mulholland secured a job with the city when he demonstrated his ability to recall the information. He then intervened with the company's principal stockholder, advising him to accept the city's offer of two million dollars for the system. The LADWP has been a leading actor in the struggle over access to water from the Owens Valley, starting with its initial acquisition of water rights, as well as acquiring farms and governance of Mono Lake and Owens Lake.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Los Angeles Department of Water and Power

Start with the simplest possible case. Write down what Los Angeles Department of Water and Power claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Los Angeles Department of Water and Power before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Los Angeles Department of Water and Power ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Los Angeles Department of Water and Power

In research: Los Angeles Department of Water and Power appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Los Angeles Department of Water and Power in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Los Angeles Department of Water and Power is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1902 establishments in California, 1906 establishments in California, 20th century in Los Angeles, so understanding it makes those chapters shorter.
In everyday life: Look for Los Angeles Department of Water and Power outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Los Angeles Department of Water and Power in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Los Angeles Department of Water and Power means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Los Angeles Department of Water and Power out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Los Angeles Department of Water and Power in simple terms?

Why does Los Angeles Department of Water and Power matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Los Angeles Department of Water and Power?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Los Angeles Department of Water and Power.