Island Ford (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°9'10", Longitude 82°36'4"
Period of record: 14 sampling dates; February 5, 1997 to December 12, 1999
Surface area (Shafer et al. 1986): 96 acres / 39 hectacres
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Supplemental, unpublished water chemistry data, University of Florida.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 2 months sampled:
|
pH |
6.4 |
Sulfate (mg/L) |
19.5 |
|
Total alkalinity (mg/L as CaCO3) |
1.9 |
Calcium (mg/L) |
6.0 |
|
Conductance (µS/cm @ 25 °C) |
117 |
Magnesium (mg/L) |
2.1 |
|
Color (Pt-Co units) |
21 |
Sodium (mg/L) |
9.1 |
|
Chloride (mg/L) |
21.6 |
Potassium (mg/L) |
2.4 |
|
Silicon (mg/L) |
0.1 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 14 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
7 |
12 |
17 |
|
Long-term total nitrogen concentrations (µg/L) |
370 |
470 |
560 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.0 |
5.2 |
8.0 |
|
Long-term Secchi depth (ft) |
4.7 |
7.6 |
11.3 |
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-18-99 |
10 |
430 |
6.0 |
7.0 |
|
Mar-06-99 |
13 |
550 |
4.7 |
6.7 |
|
May-22-99 |
16 |
510 |
4.0 |
7.0 |
|
Jul-11-99 |
9 |
370 |
4.0 |
8.3 |
|
Sep-11-99 |
12 |
480 |
4.7 |
9.3 |
|
Oct-03-99 |
12 |
510 |
8.0 |
8.0 |
|
Nov-07-99 |
7 |
370 |
4.0 |
11.0 |
|
Dec-12-99 |
8 |
410 |
2.0 |
11.3 |
|
|
|
|
|
|
|
1999 Average |
11 |
450 |
4.7 |
8.6 |