Twin East (Seminole County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°47'20", Longitude 81°20'10"
Period of record: 5 sampling dates; December 11, 1997 to April 27, 1998
Surface area (Shafer et al. 1986): 52 acres / 21 hectacres
Lake Region (Griffith et al. 1997): Crescent City/DeLand Ridges
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 Casselberry-Oviedo-Geneva-Chuluota Hills 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Supplemental, unpublished water chemistry data, University of Florida.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 |
7.1 |
Total alkalinity (mg/L as CaCO3) |
14.0 |
|
Calcium (mg/L) |
6.0 |
Potassium (mg/L) |
7.0 |
|
Conductance (µS/cm @ 25 °C) |
165 |
Magnesium (mg/L) |
6.5 |
|
Color (Pt-Co units) |
25 |
Sodium (mg/L) |
7.4 |
|
Chloride (mg/L) |
20.0 |
|
|
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) |
21 |
23 |
24 |
|
Long-term total nitrogen concentrations (µg/L) |
1040 |
1260 |
1500 |
|
Long-term total chlorophyll concentrations (µg/L) |
6.0 |
8.7 |
11.3 |
|
Long-term Secchi depth (ft) |
4.7 |
5.4 |
5.8 |
Florida LAKEWATCH data were not collected in 1999.