Secret (Seminole County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°40'26", Longitude 81°19'42"
Period of record: 28 sampling dates; May 30, 1996 to November 9, 1999
Surface area (Shafer et al. 1986): 5 acres / 2 hectacres
Lake Region (Griffith et al. 1997): Orlando Ridge
Geologic formation (Brooks 1981):
The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the Casselberry-Oviedo-Geneva-Chuluota Hills division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 28 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
19 |
28 |
43 |
|
Long-term total nitrogen concentrations (µg/L) |
400 |
610 |
1000 |
|
Long-term total chlorophyll concentrations (µg/L) |
4.3 |
19.2 |
35.3 |
|
Long-term Secchi depth (ft) |
2.5 |
4.4 |
7.0 |
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-21-99 |
26 |
710 |
11.3 |
3.8 |
|
Feb-25-99 |
24 |
570 |
12.0 |
6.0 |
|
Mar-25-99 |
20 |
550 |
4.3 |
7.0 |
|
Apr-30-99 |
19 |
630 |
15.0 |
4.0 |
|
May-31-99 |
34 |
1000 |
28.7 |
2.5 |
|
Jun-29-99 |
43 |
760 |
32.7 |
3.0 |
|
Jul-22-99 |
31 |
610 |
12.7 |
4.3 |
|
Aug-10-99 |
32 |
590 |
19.7 |
3.2 |
|
Sep-17-99 |
35 |
700 |
16.7 |
4.0 |
|
Oct-25-99 |
27 |
610 |
18.7 |
4.0 |
|
Nov-09-99 |
24 |
560 |
16.7 |
5.0 |
|
|
|
|
|
|
|
1999 Average |
29 |
660 |
17.1 |
4.3 |