East Rocks (Lee County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 26°26'3", Longitude 82°6'50"
Period of record: 26 sampling dates; May 8, 1991 to August 31, 1999
Surface area : No data available.
Lake Region (Griffith et al. 1997): Southwestern Flatlands
Geologic formation (Brooks 1981):
The geology is dominated by undifferentiated sand, shell, clay, marl, and peat of the Holocene.
Physiographic region (Brooks 1981):
The water body lies in the Barrier Island Coastal Strip division of the Southwestern Flatwoods District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
8.1 |
Total alkalinity (mg/L as CaCO3) |
151.0 |
|
Conductance (µS/cm @ 25 °C) |
1740 |
Color (Pt-Co units) |
40 |
|
Chloride (mg/L) |
600.0 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 26 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
27 |
49 |
100 |
|
Long-term total nitrogen concentrations (µg/L) |
1520 |
2330 |
4000 |
|
Long-term total chlorophyll concentrations (µg/L) |
10.3 |
45.2 |
150.0 |
|
Long-term Secchi depth (ft) |
1.0 |
2.3 |
5.0 |
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-15-99 |
40 |
1580 |
24.3 |
3.2 |
|
Feb-05-99 |
42 |
1650 |
20.3 |
3.0 |
|
Mar-04-99 |
43 |
1730 |
22.0 |
3.2 |
|
Apr-02-99 |
40 |
1610 |
12.7 |
3.0 |
|
May-07-99 |
43 |
1800 |
20.0 |
2.8 |
|
Jun-12-99 |
57 |
2460 |
58.3 |
1.5 |
|
Jul-02-99 |
34 |
2030 |
33.3 |
2.0 |
|
Aug-02-99 |
29 |
1990 |
30.0 |
2.5 |
|
Aug-31-99 |
31 |
1970 |
31.7 |
2.8 |
|
|
|
|
|
|
|
1999 Average |
40 |
1870 |
28.1 |
2.7 |