science

Ohanapecosh River

Ohanapecosh River 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 Ohanapecosh River rather than just read about it. In short: The Ohanapecosh River ( oh-HAN-ə-pi-kosh) (spelled as áwxanapayk-ash in the language of the Yakima Nation and Cowlitz Tribe) is a 16-mile (26 km) river in the U.S. state of Washington. It is the main headwater tributary of the Cowlitz River, which begins at the confluence of the Ohanapecosh River and the Clear Fork Cowlitz River.

Key takeaways

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

Reference excerpt

The Ohanapecosh River ( oh-HAN-ə-pi-kosh) (spelled as áwxanapayk-ash in the language of the Yakima Nation and Cowlitz Tribe) is a 16-mile (26 km) river in the U.S. state of Washington. It is the main headwater tributary of the Cowlitz River, which begins at the confluence of the Ohanapecosh River and the Clear Fork Cowlitz River. The Ohanapecosh originates near Ohanapecosh Glacier on the southeast side of Mount Rainier. Most of the river is within Mount Rainier National Park. Its final reach is in Gifford Pinchot National Forest. Mount Rainier is the source of nine major rivers and their tributaries: the Nisqually, Puyallup, Mowich, Carbon, West Fork White, Huckleberry, White, Ohanapecosh, and Muddy Fork rivers. Of these only the Ohanapecosh and Huckleberry are non-glacial. All of these rivers empty into Puget Sound near Tacoma, Washington, except the Muddy Fork and Ohanapecosh, which flow into the Cowlitz River, a tributary of the Columbia River. The Ohanapecosh River is named for a Taidnapam (Upper Cowlitz) Indian habitation site along the river, meaning "standing at the edge-place". The Washington Place Names database says the name may also mean "clear stream...deep blue...or deep blue holes".

Course

The Ohanapecosh River originates from meltwaters of the lower part of Ohanapecosh Glacier on the southeastern slopes of Mount Rainier. It flows southeast through Indian Bar, a broad, flat area of rocky debris. At approximately Ohanapecosh river mile 15 the Ohanapecosh plunges over Wauhaukaupauken Falls. The Wonderland Trail crosses the river near the falls. North of the river there is an alpine cirque known as Ohanapecosh Park. A similar cirque to the south is called Cowlitz Park. Below Wauhaukaupauken Falls the Ohanapecosh then flows more generally east over more waterfalls. The tributary Boulder Creek joins from the north. Below Boulder Creek the Ohanapecosh flows southeast. At approximately river mile 10.5 the Eastside Trail crosses the river near a waterfall. Then the river is joined by Chinook Creek from the north. The Ohanapecosh turns south and flows through a broad glacial U-shaped valley, which it shares with Washington State Route 123, east of the river, and the Eastside Trail on the west side of the river. Many tributary streams joins the river, including Panther Creek from the east and Olallie Creek from the west. Shortly below Panther Creek the Ohanapecosh exits Pierce County and enters Lewis County. Below Olallie Creek the Ohanapecosh River flows through a broad flat bottomland called Cedar Flats. The river splits into two channels which join at the south end of Cedar Flats. The Grove of the Patriarchs trail crosses the river and loops through the island created by the Ohanapecosh's channels. Just downstream from the rejoining of the two channels the Ohanapecosh flows by the east end of Stevens Canyon Road, which joins State Route 123 near the river. The high ridge west of the Ohanapecosh River north of the Stevens Canyon entrance road is called the Cowlitz Divide. South of the Stevens Canyon entrance the ridge is called Backbone Ridge. Both form a continuous ridgeline separating the watershed of the Ohanapecosh from the Muddy Fork Cowlitz River. The river plunges over Silver Falls near river mile 6, between Stevens Canyon Road and Laughingwater Creek. Just below that the river is joined by Laughingwater Creek from the east. At approximately river mile 5, less than a mile below Laughingwater Creek, the Ohanapecosh flows by Ohanapecosh Hot Springs and the Ohanapecosh Campground, Visitor Center, and Ranger Station. This southeastern part of Mount Rainier National Park is known as the Ohanapecosh area. After flowing through it the river exits the national park and enters Gifford Pinchot National Forest. Continuing south the Ohanapecosh is joined by Carlton Creek and Summit Creek from the east. Near La Wis Wis Campground the Ohanapecosh River joins the Clear Fork Cowlitz River. Below the confluence the stream is called the Cowlitz River. State Route 123 ends near La Wis Wis, joining U.S. Route 12. Route 12 continues to follow the Cowlitz River downstream.

See also La Wis Wis Guard Station No. 1165 List of geographic features in Lewis County, Washington List of rivers of Washington (state) Ohanapecosh Comfort Stations Three Lakes Patrol Cabin

References

External links U.S. Geological Survey Geographic Names Information System: Ohanapecosh Glacier U.S. Geological Survey Geographic Names Information System: Ohanapecosh Park U.S. Geological Survey Geographic Names Information System: Ohanapecosh Hot Springs U.S. Geological Survey Geographic Names Information System: Ohanapecosh Campground U.S. Geological Survey Geographic Names Information System: Ohanapecosh Visitor Center U.S. Geological Survey Geographic Names Information System: Ohanapecosh

Illustrations

Worked examples

Example 1 — a first encounter with Ohanapecosh River

Start with the simplest possible case. Write down what Ohanapecosh River 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 Ohanapecosh River 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 Ohanapecosh River 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 Ohanapecosh River

In research: Ohanapecosh River 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 Ohanapecosh River 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: Ohanapecosh River is common in secondary-school and first-year university syllabi. It links to neighbouring topics Rivers of Lewis County, Washington, Rivers of Pierce County, Washington, Rivers of Washington (state), so understanding it makes those chapters shorter.
In everyday life: Look for Ohanapecosh River 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Ohanapecosh River” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Ohanapecosh River in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ohanapecosh River 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 Ohanapecosh River out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ohanapecosh River in simple terms?

Why does Ohanapecosh River 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 Ohanapecosh River?

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 Ohanapecosh River.