Charles (Volusia County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°2'0", Longitude 81°15'10"
Period of record: 89 sampling dates; December 22, 1991 to December 30, 1999
Surface area (Shafer et al. 1986): 32 acres / 13 hectacres
Lake Region (Griffith et al. 1997): Crescent City/DeLand Ridges
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 St. John’s Offset division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 89 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
3 |
7 |
15 |
|
Long-term total nitrogen concentrations (µg/L) |
170 |
280 |
530 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
3.5 |
11.3 |
|
Long-term Secchi depth (ft) |
6.2 |
12.9 |
17.6 |
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-27-99 |
8 |
300 |
3.7 |
10.8 |
|
Feb-28-99 |
8 |
380 |
3.7 |
9.2 |
|
Apr-01-99 |
9 |
330 |
2.3 |
11.2 |
|
Apr-29-99 |
9 |
340 |
2.0 |
13.3 |
|
Jun-01-99 |
9 |
380 |
4.7 |
10.2 |
|
Jun-29-99 |
9 |
360 |
5.7 |
7.5 |
|
Jul-30-99 |
10 |
380 |
5.0 |
8.7 |
|
Aug-31-99 |
8 |
360 |
7.0 |
10.0 |
|
Sep-28-99 |
8 |
360 |
8.3 |
8.8 |
|
Oct-28-99 |
8 |
390 |
5.7 |
11.3 |
|
Nov-29-99 |
9 |
360 |
6.7 |
9.2 |
|
Dec-30-99 |
8 |
410 |
5.7 |
8.3 |
|
|
|
|
|
|
|
1999 Average |
9 |
360 |
5.0 |
9.9 |