Martha (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°8'50", Longitude 82°36'1"
Period of record: 4 sampling dates; October 10, 1996 to January 25, 1997
Surface area : No data available.
Lake Region (Griffith et al. 1997): Keystone 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Supplemental, unpublished water chemistry data, University of Florida.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 |
7.1 |
Sulfate (mg/L) |
18.7 |
|
Total alkalinity (mg/L as CaCO3) |
23.7 |
Calcium (mg/L) |
15.3 |
|
Conductance (µS/cm @ 25 °C) |
192 |
Magnesium (mg/L) |
3.1 |
|
Color (Pt-Co units) |
29 |
Sodium (mg/L) |
13.3 |
|
Chloride (mg/L) |
27.6 |
Potassium (mg/L) |
2.4 |
|
Silicon (mg/L) |
0.0 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 4 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
9 |
11 |
13 |
|
Long-term total nitrogen concentrations (µg/L) |
780 |
840 |
940 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.3 |
5.0 |
8.7 |
|
Long-term Secchi depth (ft) |
5.8 |
6.9 |
8.0 |
Florida LAKEWATCH data were not collected in 1999.