Crustacean zooplankton density and biomass and rotifer density for Beaverdam Reservoir, Carvins Cove Reservoir, Gatewood Reservoir, and Spring Hollow Reservoir in southwestern Virginia, USA 2014-2016

Crustacean zooplankton density and biomass and rotifer density were
measured from 2014 to 2016 in four drinking water reservoirs in
southwestern Virginia, USA. These reservoirs are: Beaverdam Reservoir
(Vinton, Virginia), Carvins Cove Reservoir (Roanoke, Virginia),
Gatewood Reservoir (Pulaski, Virginia), and Spring Hollow Reservoir
(Salem, Virginia). Beaverdam, Carvins Cove and Spring Hollow
Reservoirs are owned and operated by the Western Virginia Water
Authority as primary or secondary drinking water sources for Roanoke,
Virginia, and Gatewood Reservoir is a drinking water source for the
Town of Pulaski, Virginia. The dataset consists of both integrated
vertical tow samples from the whole water column, just the epilimnion,
and just the hypolimnion (as the difference between the full water
column and epilimnion tows), as well as discrete depth measurements
collected with a Schindler trap. All samples were collected at the
deepest site of each reservoir adjacent to the dam. The samples were
collected approximately fortnightly in the spring, summer, and autumn
months and there are also data from 24-hour sampling campaigns.