Boulder Flooding

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Boulder Chabad House Flooded as Yom Kippur Looms …

12 September 2013 | 9:18 pm As parts of Boulder, Colorado continue to be overwhelmed by the massive flooding that has already taken the lives of three people, Jewish residents scramble to pump out their basements and keep their valuables on high

Flooding in Colorado Leaves at Least 3 Dead –

12 September 2013 | 7:59 pm Flash floods in Colorado have killed at least three people near Boulder and Estes Park, cutting off mountain towns and washing away homes, bridges and parts of highways.

Flooding in Boulder, Colorado | Home – Emergency Visions

12 September 2013 | 7:14 pm All of the major news outlets have reports today of at least three people dead after flooding near Boulder Colorado. The LA Times reported early this morning.

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11 Responses to Boulder Flooding

  • Leigh says:

    CAN YOUR SCHOOL DISTRICT CLOSE JUST ONE SCHOOL IN YOUR DISTRICT? So my friend and I are at home today because our school cancelled due to flooding (in Boulder Colorado) We aren’t looking forward to going back to school tomorrow and school is cancelled if our school is found with any flooding in it. But we were wondering if any other schools in our district were to have water damage… would they only close that school? or will they close our school as well? PLEASE HELP :)))

    • Curator says:

      Water Erosion

      Water erosion occurs from the chemicals in the water, and the force of the flow of water in the river. There are many chemicals in the water of a river, and those chemicals can break down certain rocks, such as limestone or chalk. This eroded rock is carried down the river. Sometimes, a crack or crevice develops. When the force of the flowing river smashes into that crack, the rock can break away, and again be carried down the river.
      As you can see, erosion creates a load in the river. When rocks, pebbles or even boulders smack the riverbed, or side, this can cause further erosion. Also, if a boulder is stuck in an eddy, it can create a pothole in the riverbed. Rivers can wind around, but that will be looked at in the next section.

      Wind Erosion
      Wind erosion, though it may be small where you live, can take quite a toll on areas of the world covered in desert. Wind erosion is simple… light objects, such as rocks and pebbles are carried by the wind and can hit landforms, eroding materials off them, that are carried off in the wind.

      Glacier Erosion
      Ice erosion, besides that of hail, comes mostly in the form of glacier erosion. Glaciers are giant bodies of ice that can pick up huge pieces of rock, some even as big as houses. A combination of the water, ice, and picked up sediment, create a powerful eroding machine.

      The more sediment that’s picked up, the greater the force of erosion. The erosion can smooth out areas that were once rugged and rocky. Glaciers can carry almost anything, and like sandpaper, the sediment just keeps increasing. Glaciers are such a powerful force that they can carve valleys, deposit moraines, or lead to the creation of landforms such as delta’s

      Sea Erosion
      Erosion in the Sea also occurs. The salts and other chemicals can erode weak rocks on the coast, such as limestone and chalk. The eroded materials are carried up the shore by the means of a longshore drift

      Waves crashing against the shore can create air pressure inside cracked rocks, that can eventually break them. Furthermore, if rocks, pebbles or sediment is carried in the waves, they can smash up against the shore and erode it even more.

      Soil Erosion
      Soil erosion pays the biggest price to farmers. Flooding, wind etc. can carry the topsoil away from farmlands, and make the soil unfertile.

  • Charles says:

    Does Anybody Know About The 1909 California Floods? This flooding caused California’s wettest January on record, with 19 inches in one month. However, I have found very little about this event online, except small experts from websites.

    Would you happen know anything about this event?

    • Curator says:

      The storm extended from Fort Ross on the coast to the Feather River basin. La Porte, in the Feather River basin, had 57.41 inches (1,458 mm) of rain in 20 days, an event with a return period of 12,000 years. The flood episodes of 1907 and 1909 in California resulted in an overhaul of planned statewide flood control designs.

      March 1907 and January 1909 Floods
      Significant flooding on all major rivers in the Sacramento Valley. A record instantaneous flow peak was set one year, the record overall flow volume was set during the other. A total of 300,000 acres were flooded in the Sacramento Valley in 1907.
      – Long-term Strategic Impact: The flood episodes resulted in an overhaul of planned statewide flood control designs. Previous designs were based upon Midwest experience, which relied upon confining rising rivers between levees. The concept of bypasses and overflow weirs had been suggested and rejected. Following the 1907 and 1909 record floods, a new Lead Planning Engineer was selected and the current California flood control design was devised.
      – Calculated Damages: Not available.

      Floods are the Most Common Natural Disaster in California

      But while systems of levees and dams give a sense of protection from floods, in reality many of these areas are threatened by catastrophic flood events. Flooding remains a major problem in California, and there have been several disastrous events since 1850. In January 1862, four weeks of rain produced vast inland seas across most of the Central Valley and in Orange County. Major floods occurred in 1907, 1909, 1937, 1955, 1962, 1964, 1986, 1995 and 1997.

      About 90 percent of the disasters in California have been floods. Since 1950 each of California’s 58 counties have been flood disaster areas at least three times. Most of the flooding is in the floodplains along rivers, but there are also problems with coastal flooding and the potential for catastrophic flooding of southern California alluvial fans, where fast moving water is mixed with rocks and large boulders.

  • Colin says:

    If I Bury A Box In The Sand About 50ft From The Coast Line In The Sance In Between 2 Boulders Will It Be Fine? Im leaving for 3 months and I have “stuff” that I cant not bring with me and i don’t want people finding out i have “stuff” I was thinking about putting these item in a small tackle box and burring it about 50ft from the coastline of lake Michigan. How deep shold i bury it and how much will it shift while i’m gone for 3 months.

    • Curator says:

      The only real concern would be water. Wrap it in a few layers of zip-lock bags to keep it dry and the tackle box to offer mechanical protection to the zip-lock bags. There months is nothing as far as shifting goes.

      As far as depth, you know the degree of erosion better that anyone. If the area has been stable for the last few years it should be stable for the next few years. But if it’s an area where the sand washes in and out then you’ll want to bury it deeper. I could bury it on the beach at the end of my road about 4″ deep and it would be safe so long as my stuff isn’t made out of raccoon treats.

      Add stones to the box so it won’t “float” out of the ground if it floods.


  • Kiera says:

    Fluvial Erosion Processes? I’m not entirely sure about the types of sediments that get eroded.
    You know like how for transportation processes, solution is for sediments like limestone, traction is for boulders & saltation is for pebbles, sand & gravel etc. right?

    So I’m wondering what about for hydraulic action, abrasion and attrition? What kind of sediments do they erode? Like does silt get eroded via the process of attrition or something?

    Also, what are unconsolidated sediments? Examples?

    Urgently needs an answer. Thanks so much!

    • Curator says:

      Abrasion process is due to the collision and friction between the grains of sand are carried by river currents (or carried by the beach current or carried by the wind in the desert) and the materials (rocks) in its path.
      Abrasion process produce the finer grain as silt.

      If you visit the swamp area or a new area of ​​the flood receded, then you will get sediment in the form of sand or clay or silt or mix tends soft because it has not yet consolidated and its inter-granular uncemented.

  • Brandon says:

    What Are Several Landforms/features Caused By Glaciers In The United States? What landmarks or significant/famous places/features in the US are caused by glaciers? I know yellowstone is in someway caused by it. Anything else?

    • Curator says:

      Famous glaciated landforms in America:
      Cape Cod, was formed by a recessional moraine, much of which has eroded away
      Nantucket and Martha’s Vinyard are both the result of a heavily eroded terminal moraine
      Long Island is formed by both a terminal and recessional moraine
      Yosemite is a U shaped valley
      Kenai Fjords Alaska
      the Fjords of Acadia National park
      Boston’s Harbor Islands are a field of drumlins
      most of Minnesota’s 10,000 lakes are kettle ponds
      Tuckerman Ravine in NH is a cirque
      The Finger Lakes in upstate New York were carved out by a glacier
      Glacier National Park in Montana has numerous cirques, arrettes, tarns and U shaped valleys
      The Columbia river gorge is formed by the massive floods caused the breaking of ice dams
      the great lakes are largely formed by the glacier as well

      Yellowstone is not formed by glaciers but by volcanic activity, you may have that confused with Yosemite

      Since I live in New England I am very familiar with glaciated landforms:

      till: a material deposited by the glacier which is an unsorted mix of sediment. It contains sediments of various sizes from very fine clay to giant boulders
      outwash: sediment deposited by runoff from melting glaciers, is usually a mix of sand, silt and gravel with a few cobbles thrown in

      now for various landforms:
      drumlins: a streamlined hill made almost entirely of till, the cause of thier formation is not fully understood

      esker: a long ridge made of outwash, formed by a stream running beneath the glacier depositing the material along the way

      erratic: any stone deposited by the glacier that does not match the surrounding bedrock

      keg/kettle: a depression in outwash formed by a chunk of ice that broke off the glacier had sediment deposited around it and eventually melted, as it melted it left a depression. If it filled with water it is a kettle, if it is dry, it is called a keg

      rouche montanee: a hill or mountain in which a glacier passed over, one side being very steep and the other side being very steep. The smooth side is the one in which the glacier came from, and the steep is where the glacier plucked rock from and repents the direction in which the glacier was going

      moraine: a ridge of till marking an advance of the glacier
      there are different types of moraines
      terminal moraine, marks the furthest advance of a glacier
      recessional moraine: marks an advance of the glacier, but not the furthest one
      lateral moraine: one that forms along the edge of an alpine glacier

      cirque: a round depression in solid rock carved out by a glacier

      tarn: a cirque filled with water

      arrette: a ridge that has cirques on either side

      horn: a mountain that is a steep peak that has 3 or more cirques, one on each slope of the mountain

      U shaped valley: a valley carved out by an alpine glacier

      fjord, an inlet where a U shaped valley meets the ocean

      kame delta:layers of outwash that either formed a delta or partially eroded by stream action

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