Crescent (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°30'20", Longitude 81°46'26"
Period of record: 21 sampling dates; May 9, 1990 to June 11, 1999
Surface area (Shafer et al. 1986): 20 acres / 8 hectacres
Lake Region (Griffith et al. 1997): Clermont Uplands
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 Groveland Karst division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 3 months sampled:
|
pH |
6.4 |
Sulfate (mg/L) |
12.6 |
|
Total alkalinity (mg/L as CaCO3) |
4.4 |
Calcium (mg/L) |
4.4 |
|
Conductance (µS/cm @ 25 °C) |
81 |
Magnesium (mg/L) |
8.9 |
|
Color (Pt-Co units) |
15 |
Sodium (mg/L) |
7.7 |
|
Chloride (mg/L) |
14.2 |
Potassium (mg/L) |
1.7 |
|
Silicon (mg/L) |
0.3 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 21 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
4 |
9 |
11 |
|
Long-term total nitrogen concentrations (µg/L) |
450 |
600 |
750 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.7 |
2.5 |
4.0 |
|
Long-term Secchi depth (ft) |
7.0 |
9.7 |
12.5 |
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-13-99 |
6 |
610 |
2.0 |
10.0 |
|
Feb-18-99 |
11 |
600 |
1.7 |
7.5 |
|
Apr-09-99 |
11 |
740 |
2.0 |
7.0 |
|
May-04-99 |
11 |
600 |
2.0 |
8.0 |
|
Jun-11-99 |
10 |
750 |
3.0 |
9.0 |
|
|
|
|
|
|
|
1999 Average |
10 |
660 |
2.1 |
8.3 |