The amount of water it would take to cover one acre of land with one foot of water, which equals 325,581 gallons.

The calculated sediment accumulation in a reservoir that is the volume difference between the most recent and original bathymetric surveys divided by the period of time since the stream was diverted through the dam.

The measurement of the bottom contours of a reservoir.

The volume of water in the identified pool when the most recent survey was completed.

The number of years the sediment reserve volume is designed to accumulate sediment before being filled with sediment. The period of time during which a reservoir can provide 100% of all authorized purposes.

The amount of storage anticipated to be available at the design life of the reservoir.

Expected sedimentation rate at time of construction.

Entities that withdraw raw water directly from rivers downstream of federal reservoirs that held water rights prior to the lake being constructed.

The volume of water in the identified pool projected to the present (see date at bottom of fact sheet) calculated as the original volume minus the actual sedimentation rate times the amount of time since the stream was first diverted through the dam.

The amount of water, usually in mgd, the water supply pool can continuously provide during a 2% drought. Due to sedimentation, the yield will decline over time. When computed, yields are estimated forty years into the future from the date of the yield analysis.

An excess of mineral and organic nutrients that promote the prolific growth of plant life, especially algae, in reservoirs and ponds.

The purposes for which the Corps of Engineers or Bureau reservoir was authorized by Congress. These purposes may include flood control, water supply, recreation, water quality, hydropower, navigation, fish and wildlife, or other purposes.

Date gates were closed and storage began.

A calculated time value (usually shown in years) that relates the volume of a reservoir to the average net rate of inflow. Smaller values indicate relatively large inflows compared to the reservoir volume. Larger values indicate relatively small inflows compared to the reservoir volume. The hydraulic residence time does not indicate that all of the reservoir water is “replaced” at this average interval. The flow of water through a reservoir is often a complex system that ranges from in-lake currents to still waters, and these flow conditions are affected by inflow, rainfall, evaporation, wind, air and water temperatures, and other factors.

A way of numerically identifying all drainage basins in a nested arrangement from largest to smallest. The more numbers in a HUC, the smaller is the drainage basin.

The amount of storage lost to sediment since the stream was first diverted through the dam.

The year the most recent reservoir survey was completed.

Also called the Conservation Pool, this is the normal operating pool level of the reservoir that is used for recreation, water supply, low flow augmentation, and other beneficial uses, excluding flood control.

The as-built multipurpose and flood control capacity of the reservoir before any sediment accumulation, including the reserved sediment pool.

The original survey at construction completion before the reservoir was filled with water. The original bottom contours at time of construction. The original survey represents the capacity prior to any accumulation of sediment or water. That year is the year the stream was first diverted through the dam.

The volume of storage anticipated to accumulate sediment during the design life of the reservoir.

The uses for which the Kansas Department of Health and Environment establishes water quality standards.

The maximum amount of a pollutant from both point and non-point sources that cannot be exceeded within a given body of water without exceeding water quality standards.

A drought having a statistical chance of occurring once every 50 years, on the average. The drought which has a two percent chance of occurrence in any one year is assumed to lie within the continuous drought of record during the years 1952 through 1957.

A legal right to withdraw a specific amount of water during a year.

The amount of storage in the reservoir that has been purchased by a Water Assurance District. Releases from this storage are made to meet the District’s members’ downstream needs.

The amount of storage in the reservoir that is contracted for from the Corps of Engineers and paid for by water marketing customers.

The amount of water (acre-feet) the state has contracted for with the Corps of Engineers.

A legal entity formed to construct and operate flood control structures.

The land area within a watershed that directly contributes runoff to the reservoir. This area only includes the land between two federal reservoirs.

The average annual volume of sediment load transported by the river into the reservoir.

At actual sedimentation rate the year the volume of storage will equal the design life storage.