Upstream Blanket
Water
An impervious blanket placed on the reservoir floor and abutments upstream of a dam. For an embankment dam, the blanket may be connected to the impermeable element or core.
An impervious layer placed on the reservoir floor upstream of a dam. In the case of an embankment dam, the blanket may be connected to the impermeable element in the dam.
- — Dam Safety - Glossary of Terms retrieved 2014-06-01