Green Man's Pond (Putnam County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°33'18", Longitude 82°2'10"
Period of record: 5 sampling dates; January 21, 1997 to July 22, 1999
Surface area (Shafer et al. 1986): 32 acres / 13 hectacres
Lake Region (Griffith et al. 1997): Trail Ridge
Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand 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Supplemental, unpublished water chemistry data, University of Florida.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 3 months sampled:
|
pH |
5.7 |
Sulfate (mg/L) |
4.0 |
|
Total alkalinity (mg/L as CaCO3) |
0.2 |
Calcium (mg/L) |
0.7 |
|
Conductance (µS/cm @ 25 °C) |
42 |
Magnesium (mg/L) |
0.7 |
|
Color (Pt-Co units) |
3 |
Sodium (mg/L) |
4.8 |
|
Chloride (mg/L) |
10.2 |
Potassium (mg/L) |
0.2 |
|
Silicon (mg/L) |
0.2 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 5 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
4 |
5 |
8 |
|
Long-term total nitrogen concentrations (µg/L) |
80 |
100 |
110 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
1.1 |
1.3 |
|
Long-term Secchi depth (ft) |
15.2 |
19.1 |
23.0 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 3 stations for total phosphorus (TP, µg/L), total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1999:
|
Date |
TP (µg/L) |
TN (µg/L) |
CHL (µg/L) |
SECCHI (ft |
|
Jul-22-99 |
6 |
110 |
1.3 |
20.8 |
|
|
|
|
|
|
|
1999 Average |
6 |
110 |
1.3 |
20.8 |