Why Is My Street Drain Backing up Into My Yard?
Last updated October 25, 2026
The short answer
What Causes the Backup
A street drain backs up when the underground pipe that carries stormwater away cannot handle the volume or is blocked. Heavy rain, especially during intense downpours, can quickly exceed the system's capacity. When the pipe is full, water rises to the surface and flows toward lower ground, which is often your yard.
Debris like leaves, trash, and soil can clog the grate or the pipe itself. Tree roots can invade joints and slowly close off the passage. A collapsed section of pipe, often from age or ground shifting, also stops the flow. Any of these can send water bubbling up through the grate and across your lawn.
- Leaves and twigs blocking the grate
- Tree roots growing into pipe joints
- A collapsed or shifted pipe section
- Heavy rain exceeding pipe capacity
- Grease or sediment buildup in the line
- A downstream blockage forcing water backward
Check Your Own Yard First
Before calling anyone, look at the drain grate near your property. Clear away any leaves, mulch, or trash that might be covering it. If the grate is clear and water still pools, the problem is likely deeper in the system.
Also check your downspouts and yard grading. If your gutters discharge close to the drain or your yard slopes toward the house, water can collect even when the drain works. Make sure your yard slopes away from your foundation to keep water moving toward the street.
- Remove visible debris from the grate
- Check that downspouts drain away from the house
- Confirm yard grading slopes toward the street
- Look for standing water after rain stops
- Note if the backup happens only during heavy storms
- See if neighbors have the same issue
When to Call the City
If the drain is on public property, the city owns the pipe and is responsible for clearing it. Contact your local public works department to report the backup. They can inspect the line and remove blockages that are beyond your property line.
Before you call, take photos of the standing water and note the time and date. This helps the city understand the scope of the problem. If the backup is on your side of the property line, you may need to hire a plumber to clear the line with a drain snake or hydro-jetting.
Protect Your Yard and Home
While you wait for help, move anything valuable out of the flooded area. If water comes close to your foundation, take steps to divert it. You can use sandbags or a temporary berm to push water away from the house.
Do not walk through standing water if it might contain sewage or chemicals. Wear boots and gloves if you must go near it. If the water enters your home, shut off the electricity in the affected area and avoid contact until a professional assesses the situation.
After the Water Recedes
Once the drain clears and water drains away, inspect your yard for damage. Erosion, soggy spots, and dead grass can result from prolonged flooding. You may need to reseed or regrade low areas to prevent future pooling.
If water entered your home or soaked into your walls or floors, you need to dry things out quickly to prevent mold. Open windows and use fans to circulate air. For serious water damage, you may need professional help to extract water and dry the structure. Check your policy to see what is covered. Policies vary, and your insurer decides what is covered.
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Call Now (469) 698-4610Frequently asked questions
Is the city responsible for clearing a street drain?
Usually yes, if the drain is on public property. The city maintains the main stormwater pipes and grates. If the blockage is in the public line, they will clear it. If it is on your property, you are responsible for the repair.
Can I fix a blocked street drain myself?
You can clear debris from the grate, but do not attempt to open the drain or work in the pipe. That is dangerous and may be illegal. Call the city or a plumber for blockages deeper in the line.
What if water backs up into my crawl space or lowest floor?
Act quickly to remove the water and dry the area. Move belongings to a dry spot and use pumps or a wet vacuum if safe. If the flooding is extensive, consider professional water extraction and drying services to prevent mold.