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Flood
Floods are one of the most common hazards in the United States. Flood effects can be local, impacting a neighborhood or community, or very large, affecting entire river basins and multiple states.
However, all floods are not alike. Some floods develop slowly, sometimes over a period of days. But flash floods can develop quickly, sometimes in just a few minutes and without any visible signs of rain. Flash floods often have a dangerous wall of roaring water that carries rocks, mud, and other debris and can sweep away most things in its path. Overland flooding occurs outside a defined river or stream, such as when a levee is breached, but still can be destructive. Flooding can also occur when a dam breaks, producing effects similar to flash floods.
Be aware of flood hazards no matter where you live, but especially if you live in a low-lying area, near water or downstream from a dam. Even very small streams, gullies, creeks, culverts, dry streambeds, or low-lying ground that appear harmless in dry weather can flood. Every state is at risk from this hazard. (Source: FEMA)
FEMA Flood Maps, Insurance, and Information (click here).
Tips to Reduce Flooding
Warmer temperatures and resulting snow melt can produce large amounts of runoff in a short period of time, as each cubic foot of compacted snow contains gallons of water. During the early spring, frozen land prevents melting snow or rainfall from seeping into the ground. The water then runs off the surface and flows into lakes, streams, and rivers, causing excess water to spill over their banks. Add seasonal storms to the mix, and the result is often severe spring flooding.
Heavy Rains
Several areas of the country are at heightened risk for flooding due to heavy rains. This excessive amount of rainfall can happen throughout the year, putting your property at risk.
Storms over the Pacific Ocean bring heavy rains to the western United States between the months of November and April. Cresting rivers, backed-up storm drains or saturated ground can cause significant floods across the region during this time.
Ice Jams
Long cold spells can cause the surface of rivers to freeze, leading to ice jams. When a rise in the water level or a thaw breaks the ice into large chunks, these chunks can become jammed at man-made and natural obstructions, resulting in severe flooding.
Visit Floodsmart.gov for more information.
However, all floods are not alike. Some floods develop slowly, sometimes over a period of days. But flash floods can develop quickly, sometimes in just a few minutes and without any visible signs of rain. Flash floods often have a dangerous wall of roaring water that carries rocks, mud, and other debris and can sweep away most things in its path. Overland flooding occurs outside a defined river or stream, such as when a levee is breached, but still can be destructive. Flooding can also occur when a dam breaks, producing effects similar to flash floods.
Be aware of flood hazards no matter where you live, but especially if you live in a low-lying area, near water or downstream from a dam. Even very small streams, gullies, creeks, culverts, dry streambeds, or low-lying ground that appear harmless in dry weather can flood. Every state is at risk from this hazard. (Source: FEMA)
FEMA Flood Maps, Insurance, and Information (click here).
Tips to Reduce Flooding
- Check and test your sump pump according to the manufacturer instructions.
- Check your window wells.
- Clean the gutters and drainage downspouts.
- Direct flows from downspouts away from your foundation.
- Water is a common cause of unstable slopes, mudslides and erosion. Check your property for signs of earth movement, such as leaning trees, or cracks in the soil or sidewalks. If you have a problem, contact an engineer to evaluate the situation.
Warmer temperatures and resulting snow melt can produce large amounts of runoff in a short period of time, as each cubic foot of compacted snow contains gallons of water. During the early spring, frozen land prevents melting snow or rainfall from seeping into the ground. The water then runs off the surface and flows into lakes, streams, and rivers, causing excess water to spill over their banks. Add seasonal storms to the mix, and the result is often severe spring flooding.
Heavy Rains
Several areas of the country are at heightened risk for flooding due to heavy rains. This excessive amount of rainfall can happen throughout the year, putting your property at risk.
Storms over the Pacific Ocean bring heavy rains to the western United States between the months of November and April. Cresting rivers, backed-up storm drains or saturated ground can cause significant floods across the region during this time.
Ice Jams
Long cold spells can cause the surface of rivers to freeze, leading to ice jams. When a rise in the water level or a thaw breaks the ice into large chunks, these chunks can become jammed at man-made and natural obstructions, resulting in severe flooding.
Visit Floodsmart.gov for more information.