Giles (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°31'49", Longitude 81°20'4"
Period of record: 114 sampling dates; February 19, 1990 to December 9, 1999
Surface area (Shafer et al. 1986): 37 acres / 15 hectacres
Lake Region (Griffith et al. 1997): Orlando Ridge
Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Orlando Promontory division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
8.4 |
Sulfate (mg/L) |
24.8 |
|
Total alkalinity (mg/L as CaCO3) |
33.7 |
Calcium (mg/L) |
20.7 |
|
Conductance (µS/cm @ 25 °C) |
195 |
Magnesium (mg/L) |
3.0 |
|
Color (Pt-Co units) |
14 |
Sodium (mg/L) |
8.0 |
|
Chloride (mg/L) |
19.3 |
Potassium (mg/L) |
3.5 |
|
Silicon (mg/L) |
0.4 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 114 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
17 |
34 |
77 |
|
Long-term total nitrogen concentrations (µg/L) |
360 |
900 |
2060 |
|
Long-term total chlorophyll concentrations (µg/L) |
4.3 |
30.3 |
125.3 |
|
Long-term Secchi depth (ft) |
1.2 |
3.8 |
8.0 |
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-16-99 |
36 |
1260 |
44.0 |
2.1 |
|
Feb-20-99 |
44 |
1320 |
38.3 |
2.3 |
|
Mar-20-99 |
44 |
1120 |
38.7 |
2.3 |
|
Apr-20-99 |
48 |
1410 |
59.0 |
1.8 |
|
May-24-99 |
34 |
940 |
22.7 |
3.0 |
|
Jun-20-99 |
31 |
630 |
19.7 |
4.5 |
|
Jul-15-99 |
30 |
880 |
25.0 |
3.3 |
|
Aug-15-99 |
35 |
720 |
17.7 |
4.0 |
|
Sep-27-99 |
27 |
510 |
18.7 |
5.5 |
|
Oct-19-99 |
26 |
650 |
29.3 |
4.3 |
|
Nov-14-99 |
42 |
860 |
19.7 |
5.0 |
|
Dec-09-99 |
40 |
900 |
22.3 |
4.0 |
|
|
|
|
|
|
|
1999 Average |
36 |
930 |
29.6 |
3.5 |