What does a creek flood cleanup include, in order?
Recording the flood line, clearing the debris, removing the silt and then setting up the drying, in that order.
The order matters because each step makes the next one possible. Drying a garage floor that still has silt on it seals the silt into the concrete, and clearing a yard that still holds water sends the same water back to the foundation. The crew works from the outside in: the approach and the yard first, then the garage and the entry, then the rooms of the house.
The first visit usually answers a few questions about the water that are needed for the rest of the work. How high it stood, how long it stayed, whether it reached the living space and whether it came in clean or carrying sewage from a septic or a drain line. The answers decide how much of the debris is handled as contaminated.
- Photograph the flood line on the house, the fence and the trees
- Clear the drive, the garage and the yard edge of loose debris
- Remove silt from the slab and the steps while it is still soft
- Clear the drains and yard inlets so the site can drain
- Check the damp finishes and set the drying where it is needed
How is red clay mud different from the silt in other floods?
It is finer, it bonds to surfaces as it dries and it holds water for longer, so it has to be handled while it is still soft.
Piedmont clay is a fine material. A creek carries it in suspension, and when the water recedes the clay settles as a thin film that looks light but holds moisture in the same way wet soil does. Left to dry on concrete it forms a hard, slick crust that bonds to the surface. Brushing it later usually leaves a stain and a cleaner-looking patch of dust, not a clean slab.
The practical result is a race against drying. Silt that is removed while it is still wet comes up with a shovel and a squeegee. The same silt, once it has cracked, needs a scraper, a chemical cleaner and a rinse, and the rinse adds water that the slab then has to dry.
What happens to the debris, and what is kept?
Anything that stood in the flood and is porous goes out, and anything hard and clean can be rinsed and kept.
A creek flood sorts the contents of a yard as much as the water sorts the house. Wood that has been in moving water is taken away, because its grain holds mud that will rot. Metal and hard plastic can usually be rinsed and dried. Garden furniture with cushions goes out. Stored boxes and paper are dealt with as in any other stored-goods loss.
Debris that came from upstream can carry waste from other properties, so it is handled as contaminated material and is not piled for later pick-up on the owner's own property. The crew and the owner agree where it goes before it is moved, and the photographs taken on day one show what was there.
- Remove porous wood and cushioned furniture that stood in moving water
- Rinse and dry metal tools, hard plastic and sealed containers
- Bag and separate debris that may carry waste from upstream
- Photograph each pile before it is hauled away
When can the yard and the outbuildings be used again?
When the silt is gone, the drains run freely and the ground no longer holds water against the foundation.
The yard is not safe to use while the ground is still soft and the drains are blocked. Children and pets are kept off the silt until it has been cleared and the surface has dried enough to walk on. Tools and equipment that were on the floor of a shed are checked for rust and cleaned before they are used.
The site is usable when a test rain runs off rather than pooling. A low spot that holds water after a shower is the next thing to regrade, and that work is planned while the rest of the house is drying. The owner is advised to keep the flood-line photographs with the cleanup record, because the next creek rise will be measured against them.