Twin (Pasco County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°11'17", Longitude 82°25'11"
Period of record: 3 sampling dates; October 20, 1999 to December 11, 1999
Surface area (Shafer et al. 1986): 28 acres / 11 hectacres
Lake Region (Griffith et al. 1997): Land-O-Lakes
Geologic formation (Brooks 1981):
The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation.
Physiographic region (Brooks 1981):
The water body lies in the Land-O-Lakes subdivision of the Tampa Plain 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Supplemental, unpublished water chemistry data, University of Florida.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 |
7.2 |
Sulfate (mg/L) |
28.3 |
|
Total alkalinity (mg/L as CaCO3) |
56.3 |
Calcium (mg/L) |
29.0 |
|
Conductance (µS/cm @ 25 °C) |
248 |
Magnesium (mg/L) |
3.4 |
|
Color (Pt-Co units) |
46 |
Sodium (mg/L) |
7.2 |
|
Chloride (mg/L) |
21.2 |
Potassium (mg/L) |
10.0 |
|
Silicon (mg/L) |
0.5 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 3 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
17 |
22 |
24 |
|
Long-term total nitrogen concentrations (µg/L) |
740 |
770 |
810 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.3 |
3.4 |
5.0 |
|
Long-term Secchi depth (ft) |
6.7 |
7.2 |
7.8 |
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 |
|
Oct-20-99 |
24 |
740 |
5.0 |
6.7 |
|
Nov-27-99 |
23 |
810 |
3.0 |
7.3 |
|
Dec-11-99 |
17 |
760 |
2.3 |
7.8 |
|
|
|
|
|
|
|
1999 Average |
22 |
770 |
3.4 |
7.2 |