Seminole (Pasco County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°10'41", Longitude 82°34'29"
Period of record: 96 sampling dates; June 9, 1991 to November 29, 1999
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Supplemental, unpublished water chemistry data, University of Florida.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) |
10.6 |
|
Total alkalinity (mg/L as CaCO3) |
7.6 |
Calcium (mg/L) |
7.9 |
|
Conductance (µS/cm @ 25 °C) |
139 |
Magnesium (mg/L) |
1.9 |
|
Color (Pt-Co units) |
35 |
Sodium (mg/L) |
13.3 |
|
Chloride (mg/L) |
27.4 |
Potassium (mg/L) |
2.3 |
|
Silicon (mg/L) |
0.8 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 96 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
13 |
25 |
49 |
|
Long-term total nitrogen concentrations (µg/L) |
640 |
900 |
1370 |
|
Long-term total chlorophyll concentrations (µg/L) |
8.7 |
22.5 |
40.0 |
|
Long-term Secchi depth (ft) |
2.0 |
3.9 |
5.8 |
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-07-99 |
38 |
800 |
29.7 |
3.0 |
|
Jan-30-99 |
38 |
780 |
27.7 |
3.5 |
|
Mar-04-99 |
38 |
890 |
29.0 |
2.5 |
|
Mar-29-99 |
33 |
850 |
14.3 |
3.0 |
|
Apr-29-99 |
25 |
870 |
16.7 |
3.5 |
|
May-26-99 |
29 |
980 |
20.0 |
3.0 |
|
Jul-01-99 |
25 |
1110 |
36.7 |
2.5 |
|
Jul-27-99 |
23 |
1010 |
29.0 |
2.8 |
|
Aug-30-99 |
21 |
930 |
25.7 |
3.0 |
|
Sep-28-99 |
21 |
1350 |
40.0 |
2.0 |
|
Nov-01-99 |
24 |
1040 |
33.0 |
2.5 |
|
Nov-29-99 |
27 |
1110 |
31.3 |
3.0 |
|
|
|
|
|
|
|
1999 Average |
28 |
980 |
27.7 |
2.9 |