glossary of terms

Conservation Capacity
The capacity of a reservoir's conservation pool; if the reservoir is shared with another state or country then conservation capacity refers only to the portion that belongs to Texas.
Conservation Pool
Conservation pool refers to water in a reservoir that lies above the dead pool and below the flood pool. When a reservoir's conservation pool is full, the reservoir is considered full.
Conservation Storage
The amount of water present within a reservoir's conservation pool; if the reservoir is shared with another state or country then conservation storage refers only to the portion that belongs to Texas.
Dead Pool
Dead pool refers to water in a reservoir that cannot be drained by gravity through a dam's outlet works. Water that is in the dead pool is not considered part of conservation pool.
Elevation-Area-Capacity Table
A table that relates water surface elevations with volumes and surface areas for a reservoir. These relationships are obtained from either from original design documents or from a hydrographic survey of the reservoir. A single reservoir may have multiple tables that reflect changes in reservoir conditions due to processes like sedimentation.
Flood Pool
Flood pool refers to water that lies above the conservation pool. A reservoir's flood pool is used to regulate floodwaters. Some reservoirs have seasonally-varying flood pools.
Height Above Conservation Pool
The vertical distance between a reservoir's water surface elevation and the top of the conservation pool. Negative numbers indicate how far below 'full' the reservoir is, while positive numbers indicate how far into the flood pool the reservoir is.
Percent Full
The ratio of conservation storage to conservation capacity expressed as a percentage.
Reservoir Capacity
The total amount of water that a reservoir can safely hold. It is the sum of dead pool, conservation pool and flood pool.
Reservoir Storage
The amount of water present in a reservoir.
Sediment Reserve
Part of reservoir capacity that is allocated for storage of sediment that is expected to be deposited over a certain period of time. Sediment reserve and dead pool storage are not mutually exclusive.
Surface Area
The area of the top surface of a reservoir's body of water.
Water Surface Elevation
The elevation of the top surface of a reservoir's body of water.