I've been checking out some of the visual material taken of yesterday's massive flooding in Duluth and thought this one was pretty interesting. The video of the raging Miller Creek in Lincoln Park was taken while it was still raining and you see can visible change in the water level by the end of it.
Courtesy Mark RynThe recent floods in Duluth and other communities in northern Minnesota illustrate the incredible erosive power of running water. I was living in Duluth in 1972 when floods then ripped up the entire length of 6th Avenue East from top to bottom. This go-round appears to be even more devastating. I was particularly saddened to hear that the Swinging Bridge at Jay Cooke State Park has been destroyed by the force of the St. Louis River. The Lake Superior Zoo was inundated with water killing several of animals there. Several animals escaped, including the polar bear which was quickly tranquilized, recaptured, and sent to Como Zoo in St. Paul. One seal was more successful in its escape and made it out of the zoo compound to Grand Avenue where it stopped traffic. Recovery from all the damage is going take a while.
Since July 2011, heavy monsoon rains in southeast Asia have resulted in catastrophic flooding. In Thailand, about one third of all provinces are affected. On Oct. 23, 2011, when this image from ASTER, the Advanced Spaceborne Thermal Emission and Reflection Radiometer instrument on NASA's Terra spacecraft was acquired, flood waters were approaching the capital city of Bangkok as the Ayutthaya River overflowed its banks. In this image, vegetation is displayed in red, and flooded areas are black and dark blue. Brighter blue shows sediment-laden water, and gray areas are houses, buildings and roads. The image covers an area of 35.2 by 66.3 miles (56.7 by 106.9 kilometers) and is located at 14.5 degrees north latitude, 100.5 degrees east longitude.
With its 14 spectral bands from the visible to the thermal infrared wavelength region and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER images Earth to map and monitor the changing surface of our planet. ASTER is one of five Earth-observing instruments launched Dec. 18, 1999, on Terra. The instrument was built by Japan's Ministry of Economy, Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and data products. The broad spectral coverage and high spectral resolution of ASTER provides scientists in numerous disciplines with critical information for surface mapping and monitoring of dynamic conditions and temporal change.
Courtesy Azure BevingtonYou might have heard about the terrible flooding that is occurring all along the Mighty Mississippi. As I write this I am sitting in Baton Rouge, Louisiana hoping the levees will hold. Normally the river in Baton Rouge is far below the tops of the levees. Flood stage, which is the water level at which the river would begin to flood surrounding areas without the levees acting as barriers, is 35 ft. Right now the water level is 42.8 ft and has risen 8 ft in just the last week. It is projected to crest at 47.5 ft and remain at that level for 8 to 10 days; this is higher than the previous record set in May 1927 of 47.28 ft. The tops of the levees that protect Baton Rouge are between 47 and 50 ft, they are currently sandbagging in areas less than 48 ft. Besides the possibility of overtopping there are also other problems that we need to look out for. When the river level remains high for an extended period of time the water can seep in and begin to saturate the soil, this can possibly weaken the levee structure. There is also the possibility of water going under the levee; this can result in sand boils, where the water bubbles up through the soil. It is very unlikely that this will happen, as the levees are strong and well constructed, but we need to be on the lookout for any problems.
Here in Baton Rouge we are much better off than many who live in communities within the Atchafalaya Basin, where the expected opening of the Morganza spillway could cause flooding of over 3 million acres (Click here to see a map of projected flooding in the basin) Many of these folks have already begun to sandbag their homes and to prepare to leave the area. The Morganza spillway is a large controlled gated structure that will divert water from the Mississippi River into the Atchafalaya Basin. The Atchafalaya Basin is a low lying cypress swamp that normally receives 30% of the flow of the Mississippi River through the Old River Control structure through the Atchafalaya River that winds its way through the swamp. This flood is projected to be larger than the 1973 flood and possibly even larger than the 1927 flood that devastated communities along the river, and brought about the passage of Flood Control Act of 1928. The magnitude of this year’s flood has already resulted in the opening of the Bonnet Carré spillway which diverts water into Lake Pontchartrain, this reduces the water levels as the River flows past New Orleans.
Stay tuned for updates on the flooding in Louisiana.
Have any of you been affected by the flood waters?
Sometime tonight the US Army Corps of Engineers will blow up a levee at the confluence of the Mississippi and Ohio Rivers.
All that rain that fell in April has both rivers swollen WAY past flood stage. (Water levels outside Cairo, Illinois, were at 61.4' this afternoon; "flood stage" begins at 40'.)
Major General Michael Walsh, head of the Mississippi River Commission,
"...ordered the intentional breach to alleviate pressure in the river system and to protect Cairo, even though it may lead to the flooding of 130,000 acres of mostly farmland in Missouri."
The river level here at downtown St. Paul has been going down since the crest on 3/30 at 19.1'. We're holding now at about 17.3', and the National Weather Service predicts that the trend will bottom out tonight at around 17.2' before the river starts rising again. We're expecting a second crest at about 19.5' on the evening of 4/10, but that prediction doesn't take into account any rain we might get later on this week. Stay tuned...
Last week, National Geographic published some stinkin' fantastic photos of trees cocooned in spider webs. Apparently high flood waters in Pakistan caused the web-spinning critters to scurry to high, dry land -- namely these trees.
Here are some fun points from the article:
"The giant spider webs in Sindh, Pakistan, sometimes stretched from tree to tree..."
"...scientists determined that dozens of spider species were spinning the communal webs."
"The huge webs ultimately killed many of the trees they covered, perhaps by reducing the amount of sunlight reaching their leaves. But for a while, the webs also seemed to help trap more mosquitoes in the region, thereby reducing the risk of malaria..."
"While unusual, trees cocooned in spider webs are not unprecedented. Scientists have reported similar webs in other parts of the world, the tropics in particular."
The Mississippi River at downtown St. Paul crested this morning around 10:00 at 19.1 feet, making this year's flood the 8th highest flood of record. So far.
Courtesy City of St. Paul
You see, we're not out of the woods yet. There's a good possibility that we may see a second crest, and the extent of that flooding will be determined by how quickly temperatures warm up (and stay warm) and whether or not we get any big rainstorms.
The Mississippi River @ downtown St. Paul is at "action stage" right now - 12.63' - headed to "flood stage" by midnight. Yesterday, it was rising about an inch an hour, but the cold has slowed things down just a bit. And the continued cold means that the river should crest (the first time, anyway) quite a bit lower than earlier predictions. Visit the Hydrological Prediction Service for details, or follow the whole flood saga on Science Buzz.
Courtesy National Weather Service
A new gigapan is up. It is a very snowy version with much higher water. What a difference two days makes...
BTW: pay special attention to the lack of a really long train that didn't pass by. :)