White flood how much water

Emergency Management. Survey Manual. In other words, when I have a big storm over my house, just how much rain am I getting? Let's say your house sits on a one-half acre lot. And let's say you get a storm that drops 1 inch of rain. You've just received 13, gallons of water on your yard. A big bath holds about 40 gallons of water, so if you could save that inch of water that fell you could take a daily bath for days!

Along the Nile River in Sudan, floods are not unusual and destructive events have been recorded, for instance in and But, over recent years, the levels of the Nile River have risen considerably. We found that flooding can be destructive in Khartoum because of how the city has grown. With a population of about 5. Opposite Khartoum, on the western side of the Nile, is Omdurman. We found that, over thousands of years, the progressive migration of the Blue Nile river and seasonal floods of the Nile rivers created a fertile plain and continuously provided water for irrigation.

This encouraged people to expand cultivation in the area and settle there. Because of this, greater Khartoum grew without a proper urban plan. As a result, the city lacks an efficient sewer system and the most recent residential and industrial areas grew along the banks of the Nile rivers, which used to be farm land. These areas are the most vulnerable to flooding. Atmospheric rivers are long, narrow conveyor belts of moisture that move through the atmosphere.

Strong atmospheric rivers can deliver enormous amounts of rain and snow in California, the Pacific Northwest and Alaska, especially during the winter months. This can lead to serious flooding and mudslides. The ABI can also determine the amount of total moisture in the atmosphere from the ground all the way to the top of the atmosphere. This provides useful information for weather forecasters to improve predictions for heavy rains and flash flooding and help people stay safe.

After flooding occurs, weather satellites can also be used to spot heavily flooded regions from space. This flood map shows the impact of Hurricane Irma in Florida on Sept. Colors correspond to the fraction of land covered by water, ranging from green less than 30 percent to red more than 90 percent. Water and Ice.

Beaches and dunes work as natural walls to reduce the impact of storm surges. Adding sand to make beaches bigger helps limit coastal erosion and protect communities from flooding. Restoring and building up natural infrastructure such as barrier islands, oyster and coral reefs, mangroves, seagrass, and salt marshes is a cost-effective and eco-friendly way to reduce flood risks.

A changing environment means higher seas, new weather patterns, and stronger storms. As the atmosphere warms, there is more evaporation and more water available when it rains. A warmer atmosphere also means warmer oceans, which can intensify flooding from hurricanes and offshore storms. Sea level rise also increases coastal flood risks, as higher seas mean there's more water available when high tides and coastal storms cause flooding. Learn more about the environmental factors increasing flood risk.

Change in extreme rain events compared to average. Rise in inches, compared to average. Temperatures in degrees Fahrenheit. Increase in comparison to the average.