Channel Button

There are 30 articles on this title. You are reading the article ranked and rated #2 by Helium's members.

Debate_icon

Sciences   >

Water & Oceanography

Get a Widget for this title

Will great rivers die?

Title endorsed in part by:

Results so far:

Yes
57% 303 votes Total: 530 votes
No
43% 227 votes

Nature always finds a way.

This is a saying I have always found fascinating as it Makes me realize just how small human life and our evolution can seem in the grand scale of what this earths been through over time.

We are being told that today we face many global crisis's brought on by the unnatural practices of man which is adversely affecting the planets ability to cope. But is all this Unnatural? Surely everything that has happened on this earth so far can be classified as natural occurrences. We were born of this earth as we are told and we evolved (some say unluckily) into the dominant species. With domination comes development and through this mankind has in some ways altered the earth's appearance.

But on a planet estimated to be over 4 billion years old, this alteration becomes a minor event as the earth continually shifts and evolves its climate, its landscapes, its temperatures and its water management.

We may think we have managed to tame the planets natural resources but in many incidents this has been made to be proven wrong.

In 1927 the Mississippi river flooded nearly the entire length of its course displacing over 700 000 residents. This great river and its tributaries flooded more than 26000 square miles of land over seven states. Heavy rains had persisted since the autumn of 1926 and had by early spring soaked the soils of the surrounding land to a point where excess moisture could do nothing but run off. Unfortunately the snow falls from winter on the northern tiers of America began melting in the early spring of 1927 and that excess melt water drained directly into streams and tributaries feeding the Mississippi. The river at its peak was almost a mile wide at certain locations and almost 32 meters deep. At the time authorities thought that the use of levees would be sufficient to stop a disaster of this magnitude from happening. They were sadly mistaken and measures were taken shortly after for a multifaceted approach to water management. These measures included meander cutoffs, upstream reservoirs and flood outlets.

But yet again in 1993 these measures were not enough and this great river reared its powerful head. In this year 60% of the land affected by the 1927 disaster was hit again. 77% of the Levee's in place failed due to the sheer power the water bombarded these defenses with. Most of these failures occurred south of St Louis. In this incidence the flooding was caused by a crest in the water levels in the June to July summer period.

In


Below are the top articles rated and ranked by Helium members on:

Will great rivers die?

No
  • 1 of 9

    by Aldo Bonincontro

    The global warming of the Earth climate is already causing heavy effects and one of them is surely particularly harmful for

    read more

  • 2 of 9

    by Richard Probert

    Nature always finds a way.

    This is a saying I have always found fascinating as it Makes me realize just how small human life

    read more

Yes

Add your voice

Know something about Will great rivers die??
We want to hear your view. Write_penWrite now!

171200

Featured Partner

Time 4A Change

Time 4A Change (T4AC) is committed to educating citizens about social issues and mobilizing those citizens as partici...more

What is Helium? | Buy Web Content | Contact Us | Privacy | User agreement | DMCA | User Tools | Help | Community | Helium’s Official Blog | Link to Helium

Helium, Inc.
200 Brickstone Square Andover, MA 01810 USA