Jeffery (Columbia County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 30°12'34", Longitude 82°41'34"
Period of record: 10 sampling dates; October 23, 1992 to September 12, 1993
Surface area (Shafer et al. 1986): 114 acres / 46 hectacres
Lake Region (Griffith et al. 1997): Northern Peninsula Karst Plains
Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in The water body City Karst subdivision of the Northern Peninsual Slopes division of the Ocala Uplift District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
5.8 |
Sulfate (mg/L) |
0.1 |
|
Total alkalinity (mg/L as CaCO3) |
0.8 |
Calcium (mg/L) |
2.0 |
|
Conductance (µS/cm @ 25 °C) |
39 |
Magnesium (mg/L) |
0.6 |
|
Color (Pt-Co units) |
64 |
Sodium (mg/L) |
4.8 |
|
Chloride (mg/L) |
11.2 |
Potassium (mg/L) |
0.4 |
|
Silicon (mg/L) |
0.2 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 10 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
13 |
15 |
|
Long-term total nitrogen concentrations (µg/L) |
540 |
590 |
660 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.0 |
5.7 |
10.7 |
|
Long-term Secchi depth (ft) |
3.8 |
5.1 |
6.0 |
Florida LAKEWATCH data were not collected in 1999.