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Parleys Canyon

Parleys Canyon is a science 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 Parleys Canyon rather than just read about it. In short: Parleys Canyon is a canyon located in the U.S. state of Utah. The canyon provides the route of Interstate 80 (I-80) (and previously the Lincoln Highway, U.S.

Parleys Canyon — main illustration
Parleys Canyon — illustration

Key takeaways

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

Reference excerpt

Parleys Canyon is a canyon located in the U.S. state of Utah. The canyon provides the route of Interstate 80 (I-80) (and previously the Lincoln Highway, U.S. Route 40, and a railroad) up the western slope of the Wasatch Mountains and is a relatively wide, straight canyon other than near its mouth. The mountain pass at the top of the canyon is known as Parleys Summit. With an elevation of 7,120 feet (2,170 m), the pass is the highest point along I-80 in the state of Utah. Both features are named for Parley P. Pratt, an early settler of the Salt Lake Valley and leader of the Church of Jesus Christ of Latter-day Saints who surveyed the area to find a better transportation route through the Wasatch Mountains than the previous route which traversed Emigration Canyon.

Description

Parleys Canyon begins where I-215 merges into I-80 in Salt Lake City and ends at Parleys Summit. The lower part of the canyon is relatively twisty and narrow and had to be dynamited to make way for I-80. Despite this, the interstate remains six or more lanes wide throughout the canyon; it is built over Parleys Creek in many places. Work is also underway to extend the Parleys Trail multi-use path through this segment to improve non-motorized access.

The canyon widens dramatically near Mountain Dell Dam and Utah State Route 65 (SR-65) splits from the freeway (which turns southeast temporarily) to provide access to Morgan County to the northeast. SR-65 also provides a connection to a local road leading over the ridge to Emigration Canyon in the same area where the Mormon trail crossed into that canyon. Little Dell Dam can be seen higher up on the side of Parleys Canyon in this area. As the freeway turns back toward the east, there is also an exit for the road leading up Lambs Canyon (a side canyon of Parleys Canyon).The area around Parleys Summit is part of the Summit Park census-designated place (CDP). However, this area is more commonly referred to as Jeremy Ranch or Parleys Summit. Here the canyon is wide enough to form large communities along the sides of the freeway along the gentle mountain slopes. On the other side of the summit the freeway continues into the Snyderville Basin, which is where the popular resort town of Park City is located. Also within the basin is the ski jump built for the 2002 Winter Olympic Games and the large shopping district at Kimball Junction.

Wildlife crossing A $5m wildlife overpass was completed in December 2018 to allow wildlife to cross I-80 safely. The overpass is 50 feet wide and 320 feet long; animals near that location by exit 140 are funneled onto the overpass with 3.5 miles of fencing.

Climate

History

The canyon receives its name from Parley P. Pratt who was assigned to explore the canyon, called Big Canyon at the time, and to build a toll road, called the Golden Pass Toll Road. Construction on the road started in 1848 and was completed in 1850. The road through Parleys Canyon became the primary route into the Salt Lake Valley, surpassing the original route through Emigration Canyon. Later, in 1881, the canyon was used by a narrow gauge branchline owned by the Denver & Rio Grande Western Railway from Salt Lake to Park City (the Salt Lake and Park City Railway). However, with its steep grades the line struggled to compete with the Union Pacific's line (via Coalville, connecting to the UP main at Echo). The line was eventually rebuilt to standard gauge by the Rio Grande Western who along with their successor the Denver & Rio Grande Western Railroad, operated trains up into the canyon until 1956. Some remnants of the Rio Grande line through Parleys Canyon, namely the cuts for the horseshoe curves, are in use by local roads and visible off the shoulder of the freeway. A lower portion of the same railroad line outside of Parley's Canyon, remains in use in the present day as the right of way for the UTA S-Line streetcar.

References

External links

Articles and history about Parley's Canyon Openstreetmap

Illustrations

Parleys Canyon illustration
Parleys Canyon: View along Interstate 80 eastbound in Parleys Canyon
View along Interstate 80 eastbound in Parleys Canyon
Parleys Canyon: Parleys Canyon, facing Northwest
Parleys Canyon, facing Northwest
Parleys Canyon: Parleys Canyon, from I215 & I-80 to Kimball Junction
Parleys Canyon, from I215 & I-80 to Kimball Junction
Parleys Canyon: Statue of Parley P. Pratt facing Parleys Canyon at dawn
Statue of Parley P. Pratt facing Parleys Canyon at dawn

Worked examples

Example 1 — a first encounter with Parleys Canyon

Start with the simplest possible case. Write down what Parleys Canyon claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Parleys Canyon 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 Parleys Canyon 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 Parleys Canyon

In research
Parleys Canyon appears in science 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 Parleys Canyon 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
Parleys Canyon is common in secondary-school and first-year university syllabi. It links to neighbouring topics Canyons and gorges of Salt Lake County, Utah, Canyons and gorges of Utah, Interstate 80, so understanding it makes those chapters shorter.
In everyday life
Look for Parleys Canyon 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 Parleys Canyon in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Parleys Canyon means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Parleys Canyon out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Parleys Canyon in simple terms?

Parleys Canyon is a canyon located in the U.S. state of Utah. The canyon provides the route of Interstate 80 (I-80) (and previously the Lincoln Highway, U.S.

Why does Parleys Canyon matter?

Because it connects several science 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 Parleys Canyon?

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 Parleys Canyon.

Tags

  • Canyons and gorges of Salt Lake County, Utah
  • Canyons and gorges of Utah
  • Interstate 80
  • Landforms of Summit County, Utah
  • Lincoln Highway
  • Mountain passes of Utah
  • U.S. Route 40
  • Wasatch Range

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