Twin West (Putnam County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°37'20", Longitude 81°51'31"
Period of record: 10 sampling dates; November 5, 1996 to September 6, 1997
Surface area (Shafer et al. 1986): 110 acres / 45 hectacres
Lake Region (Griffith et al. 1997): Trail Ridge
Geologic formation (Brooks 1981):
The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the St. JohnÕs Offset division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
6.0 |
Sulfate (mg/L) |
5.7 |
|
Total alkalinity (mg/L as CaCO3) |
2.2 |
Calcium (mg/L) |
2.4 |
|
Conductance (µS/cm @ 25 °C) |
63 |
Magnesium (mg/L) |
1.3 |
|
Color (Pt-Co units) |
140 |
Sodium (mg/L) |
6.3 |
|
Chloride (mg/L) |
13.7 |
Potassium (mg/L) |
0.7 |
|
Silicon (mg/L) |
1.6 |
|
|
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) |
17 |
29 |
50 |
|
Long-term total nitrogen concentrations (µg/L) |
430 |
580 |
790 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.0 |
13.8 |
29.7 |
|
Long-term Secchi depth (ft) |
3.0 |
4.2 |
5.5 |
Florida LAKEWATCH data were not collected in 1999.