Top Cities and Towns At Risk of Flooding in Maryland

Maryland Cities and Towns at Risk of Flooding

We’ve sifted through the rainfall information at City-Data to find the top 20 cities in Maryland for the highest average annual rainfall. We’ve chosen only those cities with populations of 6,000 or more. We’ve also excluded districts within cities, covering only the full city listing.

#	Location	Inches
1.	Thurmont	48.5
2.	Robinwood	47.1
3.	Frederick	47.1
4.	Ballenger Creek	46.8
5.	Walkersville	46.8
6.	Hagerstown	46.7
7.	California	46.5
8.	Chesapeake Ranch Estates-Drum Point	46.4
9.	Linganore-Bartonsville	46.4
10.	Lexington Park	46.2
11.	Linganore	46.2
12.	Salisbury	46.0
13.	Four Corners	45.9
14.	Laurel	45.9
15.	Havre de Grace	45.8
16.	Scaggsville	45.8
17.	Burtonsville	45.8
18.	Bel Air North	45.8
19.	Bel Air	45.7
20.	South Laurel	45.6

How Rainy is Baltimore?

The average annual rainfall in Baltimore is 42.9 inches. We’ve also taken a peek at Washington, D.C., which is near our office in Manassas, and seen that they have an average rainfall of 42.7 inches.

Maryland Flooding Protection

We’re fortunate with the extensive protection measures in place around the state. This includes retention ponds and levees that protect 137,000 and 5,000 properties, respectively. On the Atlantic coast, dunes and seawalls protect nearly 1,400 properties. All of this helps to mitigate flooding risk.

Protect Your Own Property from Flooding

Home flooding is a disaster by any measure. But even small amounts of water can lead to major property damage and repair costs. FEMA estimates that just one inch of water in an average 2,500-square-foot home can cause more than $25,000 in damage to the building and personal property.

You can use the FEMA Flood Map Service Center to map your own property to determine flooding risks. This can also help you access the National Flood Insurance Program. Flooding is not typically covered by a homeowner’s insurance policy. You’ll need a separate policy for that type of coverage.

Preparation and Prevention

There’s a lot you can do to prepare your home for a flood. Of course, if you’re facing rising waters and in immediate danger, it’s best to take what you can and evacuate your family at once. Floods are extremely dangerous to property and life. 

• Maintain Your Gutters and Exterior Drainage. Your roof collects quite a bit of rainwater and channels it into the gutters and downspouts. That water must be routed away from the foundation through extensions and landscaping that slopes away from your home. Make sure your gutters and downspouts have adequate capacity and that the water flows well away from the property.
• Install Interior Drainage. Install an interior drainage system in your basement or crawl space, including a sump pump with battery backup for when power fails. This can be very effective in moving water out of your basement or crawl space before it builds up.
• Make Sure Backflow Valves are Installed on Drains. Installing backflow valves on sewer or septic system lines can prevent raw sewage from backing up into your home. This can happen during flooding when the water has nowhere else to go.
• Install a Flood Vent. This device actually allows water into your basement or crawl space, preventing the buildup of hydrostatic pressure that can cause the walls to collapse.
• Invest in Smart Water Sensors. These sensors can be installed in your basement or crawl space and the lower levels of your home. They can then notify you via a smartphone app that flooding is starting so that you can take immediate action and alert family members.
• Elevate Utilities. Once flooding has started it can quickly submerge your basement. Immediately prior to flooding, you can move extension cords and equipment off the floor, placing the equipment on cement blocks to allow at least some clearance above water. Well in advance, you can also rewire your basement to move outlets, etc., well away from the floor. 
• Elevate Possessions. If you have a basement office, it’s best to move your paperwork and other valuable items to a higher floor. Don’t let the water damage or destroy them. 

While we’re concerned about flooding damage to our property and possessions, it can also be a very serious threat to our lives. Do all you can to prepare for flooding well in advance, but when it arrives, the key is to survive. 

We recommend reviewing the Before, During, and After Flooding checklist from the Susquehanna Flood Forecast and Warning System for ideas on how best to prepare and respond to serious flooding.

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Holly Richards-Purpura

Content Writer

Holly is a Content Writer for Groundworks who has written and edited web content for the foundation services industry for over 10 years. With a background in journalism, her passion for the written word runs deep. Holly lives in Columbus, OH, with her husband. Along with educating homeowners, she also has a big heart for the Big Apple.