Eustis (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°50'31", Longitude 81°43'27"
Period of record: 81 sampling dates; October 4, 1990 to December 11, 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Supplemental, unpublished water chemistry data, University of Florida.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 |
8.7 |
Sulfate (mg/L) |
14.0 |
|
Total alkalinity (mg/L as CaCO3) |
104.9 |
Calcium (mg/L) |
32.7 |
|
Conductance (µS/cm @ 25 °C) |
293 |
Magnesium (mg/L) |
30.8 |
|
Color (Pt-Co units) |
20 |
Sodium (mg/L) |
13.6 |
|
Chloride (mg/L) |
26.4 |
Potassium (mg/L) |
6.0 |
|
Silicon (mg/L) |
3.1 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 81 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
19 |
39 |
70 |
|
Long-term total nitrogen concentrations (µg/L) |
1140 |
2240 |
3830 |
|
Long-term total chlorophyll concentrations (µg/L) |
10.0 |
76.6 |
143.0 |
|
Long-term Secchi depth (ft) |
1.0 |
2.2 |
8.0 |
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 |
41 |
2240 |
92.0 |
2.0 |
|
Feb-19-99 |
49 |
2760 |
112.3 |
2.0 |
|
Mar-20-99 |
43 |
2380 |
96.7 |
2.0 |
|
Apr-17-99 |
53 |
2840 |
138.0 |
2.0 |
|
May-11-99 |
45 |
2730 |
129.0 |
2.0 |
|
Jun-15-99 |
41 |
2560 |
110.7 |
2.0 |
|
Jul-23-99 |
35 |
2640 |
103.7 |
2.0 |
|
Aug-26-99 |
29 |
2330 |
86.3 |
1.0 |
|
Sep-09-99 |
36 |
2000 |
91.7 |
1.9 |
|
Oct-11-99 |
27 |
1980 |
73.0 |
2.0 |
|
Nov-10-99 |
32 |
1840 |
65.3 |
2.0 |
|
Dec-11-99 |
42 |
1770 |
53.7 |
2.2 |
|
|
|
|
|
|
|
1999 Average |
39 |
2340 |
96.0 |
1.9 |