Josephine (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°6'36", Longitude 82°33'43"
Period of record: 24 sampling dates; January 7, 1998 to December 12, 1999
Surface area (Shafer et al. 1986): 51 acres / 21 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Supplemental, unpublished water chemistry data, University of Florida.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 1 month sampled:
|
pH |
6.8 |
Sulfate (mg/L) |
8.4 |
|
Total alkalinity (mg/L as CaCO3) |
9.4 |
Calcium (mg/L) |
6.8 |
|
Conductance (µS/cm @ 25 °C) |
116 |
Magnesium (mg/L) |
1.6 |
|
Color (Pt-Co units) |
95 |
Sodium (mg/L) |
11.0 |
|
Chloride (mg/L) |
25.0 |
Potassium (mg/L) |
3.3 |
|
Silicon (mg/L) |
1.0 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 24 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
16 |
37 |
85 |
|
Long-term total nitrogen concentrations (µg/L) |
520 |
810 |
1160 |
|
Long-term total chlorophyll concentrations (µg/L) |
4.7 |
12.5 |
31.3 |
|
Long-term Secchi depth (ft) |
2.1 |
4.0 |
7.0 |
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 |
|
Jan-09-99 |
30 |
810 |
7.7 |
3.6 |
|
Feb-06-99 |
26 |
690 |
11.3 |
4.0 |
|
Mar-02-99 |
21 |
600 |
9.7 |
4.1 |
|
Apr-06-99 |
22 |
810 |
5.0 |
4.7 |
|
May-09-99 |
25 |
650 |
6.0 |
5.0 |
|
Jun-12-99 |
28 |
640 |
7.3 |
5.7 |
|
Jul-10-99 |
26 |
730 |
9.7 |
6.5 |
|
Aug-07-99 |
21 |
630 |
15.3 |
6.4 |
|
Sep-04-99 |
16 |
520 |
6.3 |
7.0 |
|
Oct-09-99 |
40 |
1080 |
10.3 |
3.3 |
|
Nov-07-99 |
42 |
1160 |
9.7 |
2.6 |
|
Dec-12-99 |
36 |
1060 |
26.3 |
2.8 |
|
|
|
|
|
|
|
1999 Average |
28 |
780 |
10.4 |
4.6 |