Hardesty (Putnam County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°36'10", Longitude 81°51'20"
Period of record: 15 sampling dates; April 11, 1990 to August 29, 1991
Surface area (Shafer et al. 1986): 44 acres / 18 hectacres
Lake Region (Griffith et al. 1997): Trail Ridge
Geologic formation (Brooks 1981):
The geology is dominated by quartz sand and quartzite gravel with sandy clay beds of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the St. John’s Offset division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
6.4 |
Sulfate (mg/L) |
3.8 |
|
Total alkalinity (mg/L as CaCO3) |
4.1 |
Calcium (mg/L) |
1.5 |
|
Conductance (µS/cm @ 25 °C) |
57 |
Magnesium (mg/L) |
1.0 |
|
Color (Pt-Co units) |
22 |
Sodium (mg/L) |
6.5 |
|
Chloride (mg/L) |
12.0 |
Potassium (mg/L) |
1.0 |
|
Silicon (mg/L) |
0.8 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 15 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
11 |
15 |
23 |
|
Long-term total nitrogen concentrations (µg/L) |
380 |
540 |
690 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.3 |
7.0 |
15.3 |
|
Long-term Secchi depth (ft) |
3.7 |
4.9 |
6.3 |
Florida LAKEWATCH data were not collected in 1999.