Griffin (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°51'33", Longitude 81°50'52"
Period of record: 68 sampling dates; May 8, 1990 to October 19, 1999
Surface area (Shafer et al. 1986): No data available.
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 Central Lakes division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 5 months sampled:
|
pH |
8.6 |
Sulfate (mg/L) |
16.6 |
|
Total alkalinity (mg/L as CaCO3) |
100.9 |
Calcium (mg/L) |
31.2 |
|
Conductance (µS/cm @ 25 °C) |
292 |
Magnesium (mg/L) |
30.2 |
|
Color (Pt-Co units) |
22 |
Sodium (mg/L) |
14.8 |
|
Chloride (mg/L) |
26.8 |
Potassium (mg/L) |
5.5 |
|
Silicon (mg/L) |
2.5 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 68 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
40 |
74 |
127 |
|
Long-term total nitrogen concentrations (µg/L) |
2100 |
3200 |
5460 |
|
Long-term total chlorophyll concentrations (µg/L) |
11.0 |
158.6 |
384.0 |
|
Long-term Secchi depth (ft) |
0.5 |
1.4 |
4.3 |
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-12-99 |
102 |
3700 |
254.0 |
0.8 |
|
Mar-06-99 |
110 |
4550 |
297.3 |
0.8 |
|
Apr-04-99 |
110 |
4760 |
345.0 |
0.8 |
|
Jun-14-99 |
102 |
5460 |
384.0 |
0.5 |
|
Jul-05-99 |
91 |
4690 |
371.7 |
0.8 |
|
Aug-11-99 |
78 |
4820 |
314.7 |
0.8 |
|
Sep-12-99 |
70 |
5130 |
258.0 |
0.8 |
|
Oct-19-99 |
75 |
3900 |
241.7 |
0.8 |
|
|
|
|
|
|
|
1999 Average |
92 |
4630 |
308.3 |
0.8 |