Sarah (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°35'7", Longitude 81°24'9"
Period of record: 109 sampling dates; November 13, 1990 to December 14, 1999
Surface area (Shafer et al. 1986): 13 acres / 5 hectacres
Lake Region (Griffith et al. 1997): Orlando Ridge
Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Orlando Promontory division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 109 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
11 |
26 |
88 |
|
Long-term total nitrogen concentrations (µg/L) |
460 |
740 |
1580 |
|
Long-term total chlorophyll concentrations (µg/L) |
4.0 |
18.7 |
59.0 |
|
Long-term Secchi depth (ft) |
2.0 |
4.2 |
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-18-99 |
26 |
660 |
17.3 |
. |
|
Feb-18-99 |
24 |
660 |
14.3 |
4.0 |
|
Mar-25-99 |
26 |
670 |
9.7 |
4.0 |
|
Apr-27-99 |
17 |
600 |
5.0 |
4.0 |
|
May-18-99 |
20 |
580 |
13.0 |
4.0 |
|
Jul-03-99 |
21 |
610 |
15.3 |
4.0 |
|
Jul-18-99 |
20 |
580 |
9.7 |
4.0 |
|
Aug-18-99 |
22 |
590 |
20.0 |
4.0 |
|
Sep-18-99 |
21 |
610 |
21.7 |
4.0 |
|
Oct-18-99 |
20 |
460 |
19.0 |
4.0 |
|
Nov-16-99 |
28 |
730 |
19.7 |
. |
|
Dec-14-99 |
25 |
770 |
18.7 |
4.0 |
|
|
|
|
|
|
|
1999 Average |
22 |
630 |
15.3 |
4.0 |