In this section
Blueberry Spring main view
photo by T. Roberts, FGS
Blueberry Spring is a fifth-magnitude spring that discharges from a small sand boil in the hillside. The circular pool is about 5 feet in diameter, with organic debris and white sulfur-reducing bacteria covering the pool bottom. Several more sand boils are present in the run further down the hillside. The spring runs toward the east to Black Water Creek.
Blueberry Spring close-up view
The only discharge measurement of 0.07 cubic feet per second was measured by the U.S. Geological Survey in 1997.
Blueberry Spring was sampled by Lake County in April and September 2004. Summary statistics of the water quality data for selected variables are shown in the table below.
Summary statistics of water quality and discharge at Blueberry Spring
|Alkalinity, total, mg/L as CaCO3||115.0||115.4||115.4||115.8||2||2004|
|Calcium, total, mg/L as Ca||116.3||118.2||118.2||120.0||2||2004|
|Chloride, total, mg/L as Cl||397.9||420.5||420.5||443.0||2||2004|
|Magnesium, total, mg/L as Mg||41.7||44.0||44.0||46.3||2||2004|
|Nitrate + nitrite, total, mg/L as N||0.03||0.03||0.03||0.03||1||2004|
|Potassium, total, mg/L as K||7.5||7.6||7.6||7.7||2||2004|
|Sodium, total, mg/L as Na||204.0||204.0||204.0||204.0||1||2004|
|Specific conductance, field, µmhos/cm at 25°C||2031||2046||2046||2060||2||2004|
|Specific conductance, lab, µmhos/cm at 25°C||1898||1898||1898||1898||1||1997|
|Sulfate, total, mg/L as SO4||279.5||279.5||279.5||279.5||1||2004|
|Total dissolved solids, mg/L||1099||1120||1120||1140||2||2004|
|Water temperature, °C||23.2||23.7||23.7||24.0||4||1997−2005|
mg/L = milligrams per liter
cfs = cubic feet per second