The majority of flooding in the US happens along the coastal regions of the East and Southeast. It includes the Eastern interior states, too. In addition, as we progress west, the flood states also include North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Colorado, and Texas. These are the states and areas that experience the majority of flooding in the United States.
The following information is courtesy of the National Weather Service:
The Northeast Floods of January 1996 were the result of very rapid snowmelt punctuated by a short but intense rainfall; 2 to 4 inches of rain. What made this event so unusual was the nature and the intensity of the snowmelt, combined with the intense rainfall for this time of year over such a large geographical area. The flooding was compounded by ice movement and jamming in many of the rivers and streams. The floods were described by some as “flash floods” for main-stem rivers due to the unprecedented rates of rising recorded during this event. Record flooding on Schoharie Creek and significant floods on Mohawk River at Schenectady and on the Hudson at Albany (15.5 feet; greatest since New Year 1949).
A catastrophic ice storm and flood event struck northern New England and northern New York during the first two weeks of January 1998. Heavy rain associated with a warm moist air mass overspread a shallow but dense layer of cold air producing ice accumulations in excess of 3 inches. Heavy rainfall, exceeding 4 inches in some areas, combined with significant runoff from melting snowpack to produce record flooding. National Weather Service Service Assessment.
Tropical Storm Floyd dumped very heavy rains, 3 to almost 12 inches, across the region. National Hurricane Center – Tropical Cyclone Report.
The remnants of Hurricane Ivan dumped heavy rains across the region, up to 6 inches in some locales.
In mid-January, warm, breezy conditions combined with high dew points melted most of the snow across the area. Runoff from the melt combined with runoff from heavy rains causes some flooding and flash flooding. The stage below Stevenson Dam on the Housatonic was the highest since 1960. The stage on the Wappingers Creek at Wappingers Falls was the highest since 1987.
Combination of high pre-storm flows, rain plus snowmelt. A slow-moving storm moved up through the Appalachians and into the northeast, producing an extended period of rainfall on April 2-4th. The heaviest rain and worst flooding occurred in Ulster and Greene Counties. Upslope flow enhanced rainfall amounts in the Catskills, where generally 3 to 6 inches fell. Flood of record occurred on the Esopus Creek (Mount Marion 26.24 feet). USGS estimated it as a 100-year event for the Upper Hudson Basin. Sacandaga Lake and Indian lake were nearly empty and were able to cut half the peak flow off the Hudson. As a result, moderate as opposed to devastating flooding resulted on the Hudson River.
TThunderstorms moving from west to east repeatedly affected the same areas of central Warren County between about 6 pm and 9 pm, with over 6 inches of rain fell at Bolton Landing. Flash flooding washed out a portion of the Northway between Exit 23 and 24.
According to the Drought Monitor of September 27th, 2005, the southern part of the Albany Hydrologic Service Area was in a moderate drought. This changed dramatically in October 2005 as two rain events dumped a total of 1 to 2 feet of rain across the driest areas. In the first event, October 7-9th, the remnants of Tropical Storm Tammy interacted with a cold front; then, a stationary low pressure sat south of Long Island and brought periods of heavy rain to New York and New England the 12th through 14th. The worst flooding occurred in Dutchess County, New York and Litchfield County, Connecticut, where moderate to major flooding was reported..
Widespread flooding in the Mohawk and Hudson river basins and eastern Catskills has occurred. Flooding was most severe along the Mohawk River and its tributaries. On Tuesday, June 27th, a frontal boundary stalled across the region. The boundary extended from southern Quebec across central New York and to Florida. A weak disturbance, tropical in origin, moved along the boundary across southeast New York Wednesday morning, June 28th. A strong low-level jet also developed, which transported more tropical moisture into central and eastern New York. Rainfall amounts from June 26th through the 30th ranged from as little as around an inch up to around a foot in the eastern Catskills.
The storm made tertiary landfall near New York City and moved north northeast over Vermont. It produced widespread, devastating flooding in Vermont, New Hampshire, New York, and New Jersey. The observed sudden and tremendous increases in river stages in a 2–3 hour timeframe were more characteristic of flash flooding in small streams than expected behavior from main stem rivers. A rainfall maximum of over 18 inches was recorded in the Catskills. In addition to the widespread and significant flooding, tropical-storm-force winds took down many trees and resulted in nearly one million people without power, some for up to a week. Several towns in Vermont and in the Catskill Mountains in southeast New York were entirely isolated and eventually received airlifted disaster supplies until roadways were made passable again. Interstate 88 in New York was closed from Exit 22 to 24 from August 28th, 2011 through August 31st, 2011 due to flooding concerns, including evaluation of a bridge affected by high water (later deemed to be safe). Portions of Interstate 87 southbound (New York State Thruway) were closed on August 28th, 2011, for flooding as well as for downed trees and power lines.
On June 14th, showers and thunderstorms moved (trained) over areas that had received significant rainfall over the past several weeks from convection. Flash flooding occurred with the town of Middleburgh in Schoharie County; the hardest hit as small creeks and tributaries (surprisingly not the Schoharie Creek itself) (combined with elevation influences) resulted in much of the town experiencing flash flooding. Flash flooding was also reported in Sharon Springs, Schoharie, Richmondville, and Cobleskill. A group of elementary students at a school in Middleburgh was sheltered in place during the flooding since there was no way to get into Middleburgh during the height of the flooding.
On June 23, slow-moving thunderstorms moved over the same areas (trained) of southern Herkimer County, which was already saturated from previous rainfall events over the last several weeks. Flash flooding occurred with the towns of Middleville and Herkimer hardest hit with several road washouts, reports of debris in roadways, and homes being flooded. Little fall also experienced flash flooding, with roads being washed out. Homes in Kast Bridge were flooded as well as roads being closed. Multiple roads were also washed out in Fairfield. West Canada Creek at Kast Bridge and Mohawk River at Little Falls.
After several weeks of very wet weather, the ground across the region was already quite saturated due to recent flooding making the region susceptible to flooding. On June 28, heavy rainfall occurred across the Mohawk Valley and western Adirondacks, with rainfall fell at rates of nearly one inch per hour at times with a total rainfall of three to five inches. This led to significant flash flooding across both the Mohawk Valley and Adirondacks. Many roads were washed out and closed, including a portion of the New York State Thruway between exits 29 (Canajoharie) and 29A (Little Falls). In addition, urbanized areas along the Mohawk River experienced dangerous amounts of flooding. The entire town of Fort Plain was underwater, and many swift-water rescues had to take place. The West Canada Creek at Kast Bridge and the Mohawk River at Little Falls both experienced major flooding.
Several rounds of thunderstorms moved across the area, mainly along and north of Interstate 90. The storms resulted in torrential rainfall and flash flooding in portions of Herkimer, Fulton, Warren, Washington, and Rensselaer Counties. It was the second straight day of heavy rainfall for some of these areas. The village of Hoosick Falls was hit particularly hard by flash flooding, with many residences experiencing basement and first-floor flooding and several roads washed out as Woods Brook overwhelmed its flood protection system and coursed through the town. A state of emergency was declared for the village, where an estimated $300,000 in damage occurred. Across Rensselaer County, flooding resulted in an estimated $3.6 million in damage. Rainfall amounts up to 4 inches were recorded in Washington County, where several roads were washed out. Neighboring Warren County estimated $1 million in flood damage. In Herkimer County, a mudslide closed a state highway, and people had to be evacuated from locations in the villages of Herkimer and Frankfort due to rising water. Several area rivers reached minor and moderate flood stages, including the Mettawee River at Granville and West Canada Creek at Kast Bridge which crested just below the major flood stage.
The dire need is to get yourself home inventory software for flooding to make sure that you are staying safe and doing adequate measures for disaster management.