James (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°7'5", Longitude 82°34'30"
Period of record: 51 sampling dates; October 14, 1994 to December 31, 1999
Surface area (Shafer et al. 1986): 16 acres / 6 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.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 51 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
24 |
168 |
|
Long-term total nitrogen concentrations (µg/L) |
590 |
800 |
2410 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.3 |
16.7 |
150.7 |
|
Long-term Secchi depth (ft) |
3.5 |
7.0 |
11.2 |
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 |
20 |
790 |
20.0 |
5.4 |
|
Feb-14-99 |
26 |
810 |
14.0 |
5.9 |
|
Mar-28-99 |
23 |
820 |
4.3 |
7.1 |
|
Apr-30-99 |
26 |
630 |
9.7 |
6.0 |
|
May-31-99 |
25 |
820 |
13.7 |
5.5 |
|
Jun-27-99 |
23 |
780 |
15.3 |
4.7 |
|
Jul-18-99 |
22 |
680 |
15.7 |
4.8 |
|
Aug-21-99 |
21 |
720 |
13.7 |
5.2 |
|
Sep-26-99 |
26 |
870 |
30.3 |
3.9 |
|
Oct-31-99 |
35 |
880 |
51.0 |
3.9 |
|
Nov-26-99 |
28 |
760 |
22.0 |
4.5 |
|
Dec-31-99 |
31 |
930 |
29.3 |
3.7 |
|
|
|
|
|
|
|
1999 Average |
26 |
790 |
19.9 |
5.0 |