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(2005-06-22 14:00:22) 下一個

Niagara Fall

I am sure you had seen pictures of Niagara falls more than once; quite likely, you had also visited the falls in person - after all, the place is teeming with tourists. To get a decent shot there, most of the time you need a good stick more than a good camera (as often as not, a sturdy umbrella is also essential). Since barrel rides are currently illegal on the Canadian side (and are quite difficult to enjoy on the other side of the border due to the nasty boulders you'll have to land on after the 90-feet drop), the best way to get an unobscured view of the falls in summer time is probably to go for a helicopter ride. If you aim your camera very carefully, and just manage to avoid the hideous eyesore of the International Niagara Water Control Project, you might be lucky enough to take a nice picture or two.

This is the Canadian part of the falls - the Horseshoe falls, so named for the obvious reason. Well, mostly Canadian - the left 10% of the Horseshoe, as well as the island there, is US territory. Luckily for the local economy, it is pretty much impossible to get a good view of the falls from that island. The match box in the middle of the horseshoe, just barely visible through the mist, is in fact a fairly sizeable pleasure boat full of tourists, each one prepared to pay good money for being thoroughly soaked in the foul water of the Great Lakes, chock-full with mementos of hundred years of the U.S. heavy industry. Well, to say the truth, it is a fairly enjoyable trip, well worth the money - but, unless you happen to have one of those water-proof cameras, it isn't much of a photo-op.



 

Rainbow falls and Bridal Veil falls (the little strip of water on the right, separated from the main fall by a little island) are much less impressive in the daytime despite being almost ten meters higher than the Horseshoe. The view is not improved by the heap of rubble at the feet of the falls, which is a fairly recent addition, created by a collapse of the waterfall face sometime in fifties. The ugly contraption on the left is the only way US inhabitants can take a peek on their own falls without contributing to the economic well-being of the thriving Canadian community of Niagara Falls.



 

Impressive as they are during the day, the falls become absolutely magnificent, even if slightly cheesy, once the coloured lights are turned on after the nightfall. The picture above is the US part of the Horseshoe.



 

The Horseshoe, seen from the "back". It is hard to believe, but at edge of the fall water is only a meter deep.



 

Rainbow falls get their revenge after in the darkness. If only we could do something about the those ugly buildings in the background ...
 
 
 

This was taken along a walkway overlooking the Horseshoe falls. Millions of gallons of water pour over these falls every hour. The mist stirred up by the fast flowing water is almost blinding. Quite a site to see.

This was taken along a walkway overlooking the Horseshoe falls. Millions of gallons of water pour over these falls every hour. The mist stirred up by the fast flowing water is almost blinding. Quite a site to see.

 

IN FALL

 

Collectively they are called "Niagara Falls"

Categorized by these three names:

American Falls  (between Prospect Point and Luna Island) far left

Bridal Veil Falls (between Luna Island and Goat Island) mid left

Canadian/Horseshoe Falls (between Goat Island and Table Rock) right 

American Falls & Bridal Veil Falls

 photo credit: Al Melhinch

length of brink:  1060 feet

height:  176 feet  (due to rocks at the base actual fall is 70 feet)

volume of water: 150,000 U.S. Gallons per second

Actual amount varies, there are two hydroelectric plants which draw water into their
reservoirs prior to the Falls. Their intake greatly affects the volume of water flowing over
the falls. The amount of water being siphoned away depends on  two variables. The time
of year, and the time of the day.  Flow is greatest in the daytime during peak tourist
season (June, July, and August). In the event of an emergency  the flow can be
somewhat reduced  by the hydroelectric companies increasing their intake.
The Bridal Veil Falls is named for its appearance. It is located next to the American falls,

separated by a small piece of land called Luna Island.

 

Canadian "Horseshoe" Falls

Copy of Horseshoefromskylon.jpg (42857 bytes)

length of brink: 2600 feet

height: 167 feet

volume of water: 600,000 U.S. gallons per second

Interesting fact: According to the U.S.G.S. (United States Geological Survey) of Niagara
Falls, it appears that almost 1/3 of the Canadian Falls lies within US Territory.
 

A Brief History of the Falls
Information below graciously provided courtesy of  Niagara Parks

Ice Age History of the Niagara River and Whirlpool Rapids

The Niagara River, as is the entire Great Lakes Basin of which the river is an integral part, is a legacy of the last Ice Age. 18,000 years ago southern Ontario was covered by ice sheets 2-3 kilometers thick. As they advanced southward the ice sheets gouged out the basins of the Great Lakes. Then as they melted northward for the last time they released vast quantities of meltwater into these basins. Our water is "fossil water"; less than one percent of it is renewable on an annual basis, the rest leftover from the ice sheets.

The Niagara Peninsula became free of the ice about 12,500 years ago. As the ice retreated northward, its meltwaters began to flow down through what became Lake Erie, the Niagara River and Lake Ontario, down to the St. Lawrence River, and, finally, down to the sea. There were originally 5 spillways from Lake Erie to Lake Ontario. Eventually these were reduced to one, the original Niagara Falls, at Queenston-Lewiston. From here the Falls began its steady erosion through the bedrock.

However, about 10,500 years ago, through an interplay of geological effects including alternating retreats and re-advances of the ice, and rebounding of the land when released from the intense pressure of the ice (isostatic rebound), this process was interrupted. The glacial meltwaters were rerouted through northern Ontario, bypassing the southern route. For the next 5,000 years Lake Erie remained only half the size of today, the Niagara River was reduced to about 10% of its current flow, and a much-reduced Falls stalled in the area of the Niagara Glen.

About 5,500 years ago the meltwaters were once again routed through southern Ontario, restoring the river and Falls to their full power. Then the Falls reached the Whirlpool.

It was a brief and violent encounter, a geological moment lasting only weeks, maybe even only days. In this moment the Falls of the youthful Niagara River intersected an old riverbed, one that had been buried and sealed during the last Ice Age. The Falls turned into this buried gorge, tore out the glacial debris that filled it, and scoured the old river bottom clean. It was probably not a falls at all now but a huge, churning rapids. When it was all over it left behind a 90-degree turn in the river we know today as the Whirlpool, and North America's largest series of standing waves we know today as the Whirlpool Rapids.

The Falls then re-established at about the area of the Whirlpool Rapids Bridge upriver to our right, and resumed carving its way through solid rock to its present location.

 

Straddling the Canadian-United States International Border and both in the Province of Ontario 

and the State of New York, Niagara Falls attracts some 12 Million tourists to her majestic 

awesome beauty each year.

The Niagara is a fairly young river, only 12,000 years old!, a microsecond in geological time. The
Niagara Escarpment, which was created by erosion is much older. The glaciers pressed down on 

the land during the last ice age and laid down layers of sediment, then the slow process of erosion

of ice and water ate at the surface of the escarpment
.

The mighty river plunges over a cliff of dolostone and shale. Niagara Falls is the second largest 

falls on the globe next to Victoria Falls in southern Africa.

One fifth of all the fresh water in the world lies in the four Upper Great Lakes-Michigan, Huron,

Superior and Erie. All the outflow empties into the Niagara river and eventually cascades over 
the falls.

At the bottom of the falls, the water travels 15 miles over many gorges until it reaches the fifth

Great Lake-Ontario. The land between the lakes does not slope at an even grade, but forms a 
spectacular drop approximately the same height as a 20 story building and this is known as the 
"Niagara Escarpment" Two billion years ago it was buried under a blanket of ice.
As the years past, the process of erosion took place, (and still does) five distinct 'gorges' were
formed-Lewiston Brange Gorge, Old Narrow Gorge, Upper & Lower Great Gorges and the 
Whirlpool Narrow Gorge.

Approximately 500 years ago the river encountered an obstacle that caused it to 'split into two 

channels', thus Goat Island was formed named after John Stedman whose goat herds froze to
death in the winter of 1780). This was the original sediment left from a vanished Lake Tonawanda 
(an Indian name).
On the eastern part of the island, the American Falls took shape, the Horseshoe Falls, is on the 

 western side, where the river angles some 90 degrees.

The water flow on the American side of the falls is much less in strength because of Goat Island, 

whereas Horseshoe Falls has no obstruction to divert it.
It should be noted that a third much narrower falls exists. Over the years these falls have been 

called at different times; Luna Falls, Iris Falls and is currently named Bridal Veil Falls.

Man has not been able to completely control the flow of the water over the falls, even modern 
engineers have tried. Much of the water today is fed through underground channels and pipes to 
nearby hydro electric power stations.

Do the Falls Freeze over in the Winter?

Yes and No...... We'll try to explain

The tremendous volume of water never stops flowing,  However, the falling
water and mist create ice formations along the banks of the falls and river.
This can result in mounds of ice as thick as fifty feet. If the Winter is cold for
long enough, the ice will completely stretch across the river and form what
is known as the "ice bridge".  This ice bridge can extend for several miles
down river until it reaches the area known as the lower rapids.  
Until 1912,visitors were allowed to actually walk out on the ice bridge and 

view the Falls from below. February 24th of 1888 the local newspaper

reported that at least 20,000 people watched or tobogganed on the ice.
Shanties selling liquor, photographs and curiosities abounded. On February
4th 1912 the ice bridge broke up and three tourists lives were lost.

There can also be a great deal of  "mini-icebergs" which flow down the 

Niagara River from frozen Lake Erie. The flow of ice has been reduced 
considerably by the yearly installation of the "ice-boom" on Lake Erie. The 
ice-boom is a long floating chain (2miles- 3.2 KM) of steel floats strung across 
the Niagara River from Buffalo New York to Fort Erie Ontario.
It is set in place during the month of December and  removed during the 
month of March or April. It is maintained by the New York State Power 
 Authority. The ice boom helps prevent the ice from clogging the river and most
 importantly the hydroelectric companies water intakes.

Ice_flow_under_Grand_Island_Bridge.jpg (85596 bytes)

Spring Ice flowing underneath the North Grand Island Bridge

HOWEVER.... The flow of water was stopped completely over both falls 
on March 29th 1848 due to an ice jam in the upper river for several hours. This 
is the only known time to have occurred. The Falls did not actually freeze 
over, but the flow was stopped to the point where people actually walked out 
and recovered artifacts from the riverbed! 

The "Ice Bridge" underneath the Rainbow Bridge. 1997 

Interesting facts about Niagara Falls

The flow over the American Falls was stopped completely for several months 
in 1969. The idea was to determine the feasibility of removing the large 
amount of loose rock from the base of the falls to enhance it's appearance.  
In the end the final decision was that the expense would be too great.

photo credit: Lindsay News & Photo 
The word "Niagara" is derived from the Iroquois Indian word "Onguiaahra"  
meaning "the strait"
There is an international boundary between the United States and Canada.
Before the invention of film, tourists would sketch pictures of the Falls.
The flow was also halted over both falls on March 30th 1848 due to an ice jam 
in the upper river.

The movies Niagara and Superman were filmed in part at the Falls.

In the past ten years, two daredevils lost their lives trying to conquer Niagara. 

In the evenings, intense spotlights bathe the falls with different shades of color.

 

The first  person to go over the Falls in a barrel and survive was a  63 year old  
female schoolteacher.
High wire tightrope acts used to be performed across the river. Most notably 
was "Blondin" who once actually carried his manager across on his back, 
stopping midway to rest !
The Falls make a tremendous sound as the water goes over and lands at the 
bottom.
Twenty percent of the worlds freshwater lies in the Great Lakes, and most flows 

over Niagara Falls.

 

A notable part of the international boundary between the United States and Canada.

NIAGARA RIVER FLOWS FIFTEEN MILES FROM LAKE ERIE INTO LAKE ONTARIO
GOAT ISLAND DIVIDES THE CANADIAN FALLS FROM THE US FALLS

The word "Niagara" is derived from the Iroquois Indian word
"Onguiaahra" meaning "the strait"

Niagara Falls is actually three falls.'The Canadian Falls are a Horseshoe shape 158 ft (48 m) high and 3010 ft (917 m) at the crest. The American Falls and Bridal Veil Falls are 167 ft (51 m) high and 1060 ft (323 m) wide. Cities on each side of the falls have over 70,000 population and tourism is the mainstay of both cities. The view from either side is spectacular. Take a tour on a boat that goes into the mist at the base of the falls or hoof it on the walks from parking lots. The land north of the Great Lakes was lost to England in the French-Indian War of 1812. No great loss said the French about the vast acres of ice the fur trappers called Ontario.

Photos by Michael Sherer 2004


A view of Niagara river from above American Falls


From the park one can see one of the old power plants
that line the Niagara gorge below the falls.


This is the American Falls with Bridal Veil Falls in foreground
and oberservation tower in upper left background


See the water fall into the great gorge of the Niagara river
and feel the sound of the the roaring noise


Elaborate platforms have been anchored into the ancient
granite rocks to allow viewing at the base of Bridal Veil .
The mist is penetrating but slickers are provided.


History lives in the statue of a great Iroquois Chief with wampum.
Algonquin, a French word used in 1666, literally means real adders.
Iroquois was a name used in 1888 for the Confederacy which included
Cherokee, Erie, Cayuga, Mohawk, Oneida, Onondaga, Seneca, and Tuscarora peoples.


Aerial view of the International boundary between the USA and Canada
On the left are the American Falls and Bridal Veil Falls
On the right is the Canadian Horseshoe Falls
Photo from niagarafallslive.com see the water fall over the brink


 

 

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