The Quality of Water and Bottom Material in Lunga Reservoir, Virginia, September 2004 through August 2005

Abstract

Concentrations of (A) alkalinity, (B) dissolved bromide, (C) dissolved calcium, (D) dissolved chloride, (E) dissolved fluoride, (F) dissolved magnesium, (G) dissolved potassium, (H) dissolved silica, (I) dissolved sodium, (J) dissolved sulfate, and (K) specific conductance at 1.

Quality of water and bottom material in Breckenridge Reservoir, Virginia, September 2008 through August 2009

“…The mean nitrite-plus-nitrate concentration determined for samples collected at 1.0-ft depth at all the three reservoir sites (0.020 mg/L) was lower than the mean nitrite-plus-nitrate concentration determined for samples collected from Lunga Reservoir (0.026 mg/L; Lotspeich, 2007). The mean nitriteplus-nitrate concentration determined for samples from the Pea Hill Arm of Lake Gaston Reservoir was also higher at 0.066 mg/L (Woodside, 1994).…”

“…Although no thermocline was observed in Breckenridge Reservoir, a thermocline was observed in Lunga Reservoir during the summer and early fall between depths of 10 to 20 ft where the water temperature dropped nearly 20 °C, dissolved oxygen reached near-zero concentration, and specific conductance more than doubled near the bottom (Lotspeich, 2007).…”

“…(Lotspeich, 2007). In the Pea Hill Arm of Lake Gaston Reservoir, pH values ranged from 6.8 to 8.2 standard units from 1988 to 1990 (Woodside, 1994).…”

“…No turbidity data were collected in May 2009 due to a malfunctioning turbidity probe. (Lotspeich, 2007), and a mean specific conductance of 90 µS/cm was measured in the Pea Hill Arm of Lake Gaston Reservoir from 1988 to 1990 (Woodside, 1994). In addition, mean specific conductance values of 118, 81, and 117 µS/cm were measured in the Chickahominy, Diascund Creek, and Little Creek Reservoirs , respectively, from 1983 to 1986 (Lynch, 1992).…”

“…Chickahominy, Diascund Creek, and Little Creek Reservoirs, located mainly in the Coastal Plain Physiographic Province with some of the Chickahominy Reservoir watershed located in the Piedmont, were studied between 1983 and 1986 (Lynch, 1992). In addition, Lunga Reservoir, also located on the USMC Base within 5 miles (mi) of Breckenridge Reservoir, was studied by the USGS in 2004and 2005(Lotspeich, 2007. These reservoirs are all much larger than Breckenridge Reservoir and serve as water-supply sources for the residents of southeastern Virginia.…”