Armistead (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°6'5", Longitude 82°33'36"
Period of record: 63 sampling dates; October 8, 1990 to March 17, 1998
Surface area (Shafer et al. 1986): 35 acres / 14 hectacres
Lake Region (Griffith et al. 1997): Tampa Plain
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Supplemental, unpublished water chemistry data, University of Florida.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 3 months sampled:
|
pH |
6.8 |
Sulfate (mg/L) |
12.9 |
|
Total alkalinity (mg/L as CaCO3) |
8.3 |
Calcium (mg/L) |
7.6 |
|
Conductance (µS/cm @ 25 °C) |
132 |
Magnesium (mg/L) |
2.3 |
|
Color (Pt-Co units) |
87 |
Sodium (mg/L) |
10.7 |
|
Chloride (mg/L) |
25.5 |
Potassium (mg/L) |
3.6 |
|
Silicon (mg/L) |
2.4 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 63 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
9 |
19 |
50 |
|
Long-term total nitrogen concentrations (µg/L) |
400 |
770 |
1060 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
6.7 |
25.7 |
|
Long-term Secchi depth (ft) |
2.5 |
5.5 |
9.3 |
Florida LAKEWATCH data were not collected in 1999.
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