Norbert (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°9'16", Longitude 82°28'42"
Period of record: 9 sampling dates; November 11, 1996 to October 14, 1999
Surface area : No data available.
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Supplemental, unpublished water chemistry data, University of Florida.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 |
7.3 |
Sulfate (mg/L) |
34.3 |
|
Total alkalinity (mg/L as CaCO3) |
24.0 |
Calcium (mg/L) |
19.7 |
|
Conductance (µS/cm @ 25 °C) |
282 |
Magnesium (mg/L) |
2.7 |
|
Color (Pt-Co units) |
19 |
Sodium (mg/L) |
19.7 |
|
Chloride (mg/L) |
38.1 |
Potassium (mg/L) |
5.9 |
|
Silicon (mg/L) |
0.1 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 9 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
14 |
25 |
37 |
|
Long-term total nitrogen concentrations (µg/L) |
680 |
930 |
1230 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.7 |
17.2 |
26.7 |
|
Long-term Secchi depth (ft) |
3.5 |
6.9 |
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 |
|
Mar-26-99 |
23 |
960 |
7.3 |
8.0 |
|
May-13-99 |
29 |
1070 |
20.3 |
3.5 |
|
Jul-15-99 |
. |
. |
26.7 |
. |
|
Aug-15-99 |
28 |
1010 |
16.7 |
5.1 |
|
Oct-14-99 |
24 |
920 |
15.3 |
6.4 |
|
|
|
|
|
|
|
1999 Average |
26 |
990 |
17.3 |
5.8 |