Blue (Washington County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 30°44'33", Longitude 85°33'4"
Period of record: 6 sampling dates; September 2, 1997 to November 9, 1998
Surface area (Shafer et al. 1986): 30 acres / 12 hectacres
Lake Region (Griffith et al. 1997): Dougherty/Marianna Plains
Geologic formation (Brooks 1981):
The geology is dominated by thick soils and residual weathered alluvium, mostly over limestone and red in color.
Physiographic region (Brooks 1981):
The water body lies in the Limestone Terrain subdivision of the Marianna Red Lands division of the Dougherty Karst District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
7.1 |
Sulfate (mg/L) |
3.3 |
|
Total alkalinity (mg/L as CaCO3) |
5.4 |
Calcium (mg/L) |
2.1 |
|
Conductance (µS/cm @ 25 °C) |
29 |
Magnesium (mg/L) |
0.5 |
|
Color (Pt-Co units) |
12 |
Sodium (mg/L) |
1.8 |
|
Chloride (mg/L) |
4.8 |
Potassium (mg/L) |
1.4 |
|
Silicon (mg/L) |
1.1 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 6 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
11 |
15 |
21 |
|
Long-term total nitrogen concentrations (µg/L) |
280 |
460 |
680 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.7 |
7.3 |
14.0 |
|
Long-term Secchi depth (ft) |
3.5 |
5.0 |
7.0 |
Florida LAKEWATCH data were not collected in 1999.