Lou (Marion County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°13'55", Longitude 81°51'36"
Period of record: 119 sampling dates; January 31, 1990 to December 23, 1999
Surface area (Shafer et al. 1986): 110 acres / 45 hectacres
Lake Region (Griffith et al. 1997): Central Valley
Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Lynne Karst division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
5.9 |
Sulfate (mg/L) |
2.7 |
|
Total alkalinity (mg/L as CaCO3) |
5.0 |
Calcium (mg/L) |
3.5 |
|
Conductance (µS/cm @ 25 °C) |
41 |
Magnesium (mg/L) |
1.3 |
|
Color (Pt-Co units) |
211 |
Sodium (mg/L) |
3.2 |
|
Chloride (mg/L) |
7.9 |
Potassium (mg/L) |
0.5 |
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 119 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
9 |
18 |
38 |
|
Long-term total nitrogen concentrations (µg/L) |
640 |
960 |
1400 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
9.4 |
28.7 |
|
Long-term Secchi depth (ft) |
2.0 |
4.4 |
8.8 |
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-14-99 |
16 |
1070 |
4.7 |
3.0 |
|
Feb-18-99 |
14 |
920 |
7.0 |
3.0 |
|
Mar-16-99 |
19 |
1150 |
12.0 |
3.0 |
|
Apr-23-99 |
18 |
1070 |
11.0 |
3.2 |
|
May-26-99 |
16 |
1090 |
7.0 |
2.5 |
|
Jun-25-99 |
16 |
1040 |
6.0 |
3.0 |
|
Jul-14-99 |
18 |
990 |
7.0 |
3.3 |
|
Aug-09-99 |
16 |
1080 |
28.7 |
2.5 |
|
Sep-22-99 |
19 |
1140 |
4.0 |
3.0 |
|
Oct-19-99 |
19 |
950 |
11.0 |
2.7 |
|
Nov-16-99 |
13 |
1100 |
9.0 |
2.8 |
|
Dec-23-99 |
15 |
1050 |
3.0 |
3.5 |
|
|
|
|
|
|
|
1999 Average |
17 |
1050 |
9.2 |
3.0 |