Why did water reach my house from a pond that is not full?
A detention pond can overflow its low point or a drainage path even when most of its capacity is still free. Water takes the route of least resistance across the lot, and a blocked swale or a low corner can send it toward a building while the rest of the pond is still empty.
Ponds are shaped to take water at one or more points, and the rest of the bank may hold it back. When the water rises at the wrong point, it crosses the lot somewhere else. A house downslope of that point can take the flow even though the pond itself looks fine from the road.
The technician looks at the route the water took, not only the pond. That route is what tells the crew which entry needs sealing and which drain needs clearing.
Who looks after the pond and the drainage around it?
Stormwater ponds and their outlets are maintained by the owner of the land, a developer's association or a public authority, depending on the site. This company does not maintain them and cannot change how they work.
If a pond or a drain near your property is blocked, damaged or overflowing, report it to the authority that maintains it and keep a record of the date and the condition. A crew can note the water route and give you that record for the report.
Changes to a pond or to the grade of a lot can need a permit. The City of Champaign's building department answers permit questions for repairs to a building, and the crew will tell you which office to ask about the land.
What should I check in the house after a pond overflow?
Check the lowest rooms, the crawl space and the garage, and look at the walls and the sill for a damp line or swelling. Check the sump if there is one, and listen for any drain that gurgles, since that can mean water is coming back up.
A visible wet line is the first sign, but water can travel up inside a wall and show later. Smell, the feel of a floor and a rise in humidity in a closed room are also useful. Note what you see and when, because the technician will ask.
Do not seal a window well or a vent while water is still moving toward it. Wait until the crew has seen the route, so the sealing does not trap water inside.
How does the crew handle contaminated pond water?
Storm water that has crossed a lot is treated as contaminated from the first step. The crew uses protective equipment, removes silt and debris, and dries the structure only after the water is out and the wet materials that cannot be dried are removed.
Storm water carries sediment, leaves, litter and whatever the lot held. It can also carry contamination from the ground, so it is handled with care and not treated as clean water. Carpet pad, insulation and drywall that have taken it up are removed where they cannot be brought back.
The crew records the material it removed and the readings it took. That log is what shows the work was done to a standard the insurer and the owner can check.
Is the price different for a pond overflow than for a basement leak?
It can be. A pond overflow often involves the outside ground and the route across the lot as well as the building, and it can reach more than one room. The price is set by the scope in the building and is explained and approved before any equipment runs.
The size of the affected area, the number of rooms, the amount of finished material and the access to the wet area all change the scope. A flooded crawl space with insulation to remove is a different job from a wet garage floor.
No figure is given on the phone or on this site, because a number before the crew has seen the water would be a guess. You approve the scope before the equipment is set up.