a) Raising or blocking up appliances, furniture and other items that
may be damaged by direct contact with the water for an extended time;
b) Installing a false floor over the basement slab. This allows water
to drain under the false floor to a drain or sump.
c) Installing a surface drainage system around the perimeter of the
basement floor. This method channels water from the walls to a drain or
sump for removal.
Relieving water pressure against walls and the floor. Some
form of drainage is necessary when cracks occur because of water
pressure.
a) If the basement or foundation does not already have drain tile
installed, consider an excavation of the home exterior to allow for
waterproofing of the walls and the installation of washed stone (gravel)
and drain tile. Drain tile can divert water away from the house if there
is a slope, or accommodate a sump pump system as noted below.
b) Internal drainage is another option if excavation is not possible
or convenient. Washed stone and drain tile are installed around the
interior perimeter of the basement footing. This requires subfloor
installation and trenching.
c) Sump pumps are a necessary part of the internal drainage system
unless the interior tile can be connected to exterior tile that will
drain away from the house. Similarly, sump pumps may be a necessary part
of external drain tile systems if water does not drain away from the
house naturally.
Filling the basement. This option can eliminate the
groundwater problem, but the trade-off is the loss of a full basement.
If the groundwater level in a basement is only 1 or 2 feet, one option
is to pour a new floor in at a higher level, leaving a crawl space in
the basement. The original floor needs to be broken first, so that water
pressure can be relieved. Fill dirt is brought in and the new floor
poured. Drainage under the new floor also is recommended. In more severe
cases, the basement may have to be completely abandoned.
Rebuilding septic systems and wells. If septic systems and
wells have been compromised, the systems should be rebuilt following
modern guidelines for high groundwater areas. There may be added
expenses related to closing or removing portions of existing systems
that have failed.
Raising or relocating the house. This is the most expensive
option. It is the best long-term solution when the building integrity is
threatened and utilities must be shut off. In some cases, it may be the
only reason-able option to avoid property damages and lower property
values.