Cooper (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°8'44", Longitude 82°28'18"
Period of record: 34 sampling dates; December 13, 1996 to December 10, 1999
Surface area (Shafer et al. 1986): 82 acres / 33 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Supplemental, unpublished water chemistry data, University of Florida.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 |
7.1 |
Sulfate (mg/L) |
52.0 |
|
Total alkalinity (mg/L as CaCO3) |
9.2 |
Calcium (mg/L) |
15.0 |
|
Conductance (µS/cm @ 25 °C) |
246 |
Magnesium (mg/L) |
4.5 |
|
Color (Pt-Co units) |
10 |
Sodium (mg/L) |
15.0 |
|
Chloride (mg/L) |
32.5 |
Potassium (mg/L) |
6.1 |
|
Silicon (mg/L) |
0.3 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 34 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
7 |
18 |
29 |
|
Long-term total nitrogen concentrations (µg/L) |
400 |
720 |
950 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.0 |
11.0 |
28.3 |
|
Long-term Secchi depth (ft) |
2.8 |
6.3 |
13.0 |
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-14-99 |
20 |
750 |
7.0 |
4.7 |
|
Feb-16-99 |
25 |
780 |
10.3 |
4.2 |
|
Apr-16-99 |
15 |
650 |
5.0 |
5.3 |
|
May-12-99 |
14 |
810 |
5.7 |
6.8 |
|
Jun-12-99 |
16 |
690 |
4.7 |
7.3 |
|
Aug-09-99 |
12 |
700 |
5.3 |
7.5 |
|
Oct-18-99 |
16 |
790 |
22.7 |
5.7 |
|
Nov-15-99 |
15 |
670 |
6.0 |
6.7 |
|
Dec-10-99 |
19 |
700 |
8.0 |
7.5 |
|
|
|
|
|
|
|
1999 Average |
17 |
730 |
8.3 |
6.2 |