You’re right, it is really cool! The firefall is a natural phenomenon that occurs for a few days in mid to late February each year in Yosemite National Park. When the setting sun hits Horsetail Fall just right, the waterfall glows red and orange, as if it’s made of fire.

This year, though, the fall might not turn fiery. As of Feb. 13, there wasn’t enough water flowing, and there’s no rain in the forecast during the dates when the sun would hit at the right angle.

If you’re still wanting to go see it despite the low chance of the spectacle making an appearance, know that it’ll probably be difficult to manage. Last year, thousands of visitors tried to catch a glimpse of the firefall, and the overcrowding caused some destruction, like trampled plants and eroded riverbanks. Park staff hopes to avoid those issues this year by more tightly controlling access to that part of the park.

Water falls over Hard rock. When it reaches the soft rock, the water starts to wear away the soft rock, this is called erosion. Over hundreds or even thousands of years, the soft rock is slowly eaten away or eroded and the river begins to cut down further into the soft rock. This makes a cliff over which the water can topple. Over time, the cliff becomes steeper as more soft rock is eroded, and deeper as bigger boulders come over the waterfall, and the ground gets beaten with more and more rocks until it creates a plunge pool. Some of the water goes under the waterfall and under cuts the soft rock. More of the hard rock begins to fall away and the waterfall slowly moves upstream.
Water falls are formed when a layer of soft rock is under a layer of hard rock. The soft rock is eroded forming a plunge pool. The hard rock fall in the plunge pool. As this keeps happening both layers stay the same and the water falls to the rivers.

Waterfalls are formed by erosional processes- Hydraulic, corrosion and attrition action. Waterfalls form where rivers meet a less resistant rock, after flowing over more resistant rock. The hard rock eventually collapses into the plunge pool at the bottom and the soft rock is eroded back.
It all starts off on top of a high elevation, such as a mountain, and when it rains the water tumbles down the mountain or hill. Sometimes there is no path for the water to follow so it must fall of the cliff. There is a layer of hard rock underneath the water and soft rock underneath that. The soft rock erodes faster than the hard rock forming a curved ledge underneath the hard rock. A plunge pool would be formed at the bottom once the water had started tumbling down. After some time, the hard rock would erode too, pushing the waterfall upstream over years.
Wherever rain falls the laws of gravity assure that one way or another it will try to reach the ocean. Normally it moves to lower ground by lines of least resistance ie trickle down, first small creeks and streams slowly gathering to meet in a valley to form a river and down to the coast. Sometimes the rainfall on rocky platforms or plateau's can not find a route down hill. This water will gather until there is enough to find the line of least resistance and cascade over the edge of the plateau in a water fall. Over the course of time the rain will gouge out a permanent watercourse at this point

Irrawaddy River

River, Myanmar (Burma). It flows 1,350 mi (2,170 km) across the centre of the country and empties into the Bay of Bengal. The country's most important commercial waterway, it is formed by the confluence of the Nmai and the Mali rivers; in the central dry zone it is joined by its major tributary, the Chindwin River. Chief ports are Mandalay, Chauk, Prome (Py

We go for waterfall model if the requirement of a problem are reasonably well understood for ex In existing employ payroll system ,if the payroll computing mechanism has to be changed we go for waterfall model
cleanroom software engineering implements waterfall model.
online event management system.
Any project for which complete and consistent requirements are available is amenable to the waterfall model. In general, this will tend to be a very small project. The only large projects that are amenable to the waterfall model would be projects of re-engineering an existing system, therefore all the requirements are known before you start the process.

The reason is that the waterfall model only handles requirements in the first phase of development. In the presence of requirements or technical uncertainty you want to have some kind of iterative process in place, i.e. RUP, Agile, RAD, etc. When requirements uncertainty is present you will start coding and then discover that requirements need to be reviewed or rewritten -- in the waterfall model there is no other phase where requirements get revised.
The creation a new website that uses the existing techlnlogy
The creation a new website that uses the existing techlnlogy
we can take real life examples for water fall model like automobile companies make cars and bikes. when they are building a car, the requirments are fixed, predecided. there will be no change in the requirments during the process of building a car. Once we complete a stage, we proceed to the next one. if there is any change in requirments come then we have to go back and make those changes. then we have to change our complete system that requirs extra time and extra money. this is a major disadvantage of water fall model.
Material resource planning in a manufacturing unit

Since we are not sure as to what the asker meant by largest, here are some answers.

• The world's largest waterfall is Victoria Falls located on the border of Zambia and Zimbabwe.
• The world's tallest waterfall is Angel Falls in Venezuela.
• The world's tallest man-made waterfall is Cascata delle Marmore in Italy.
• Niagra Falls is also one of the biggest waterfalls.... located in Canada.