Winyah (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°34'40", Longitude 81°22'4"
Period of record: 72 sampling dates; January 23, 1991 to December 7, 1999
Surface area (Shafer et al. 1986): 17 acres / 7 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.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
8.5 |
Sulfate (mg/L) |
11.8 |
|
Total alkalinity (mg/L as CaCO3) |
48.0 |
Calcium (mg/L) |
19.3 |
|
Conductance (µS/cm @ 25 °C) |
163 |
Magnesium (mg/L) |
2.5 |
|
Color (Pt-Co units) |
26 |
Sodium (mg/L) |
7.8 |
|
Chloride (mg/L) |
14.5 |
Potassium (mg/L) |
2.0 |
|
Silicon (mg/L) |
0.9 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 72 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
22 |
65 |
115 |
|
Long-term total nitrogen concentrations (µg/L) |
480 |
860 |
2530 |
|
Long-term total chlorophyll concentrations (µg/L) |
8.3 |
45.8 |
117.3 |
|
Long-term Secchi depth (ft) |
1.8 |
2.9 |
5.8 |
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-19-99 |
38 |
480 |
22.7 |
4.0 |
|
Feb-09-99 |
44 |
640 |
35.3 |
3.0 |
|
May-04-99 |
22 |
650 |
21.7 |
2.0 |
|
Aug-31-99 |
67 |
730 |
40.3 |
2.3 |
|
Sep-23-99 |
85 |
860 |
44.3 |
3.4 |
|
Oct-05-99 |
74 |
800 |
59.3 |
2.5 |
|
Nov-09-99 |
60 |
710 |
43.3 |
3.0 |
|
Dec-07-99 |
46 |
650 |
35.7 |
3.2 |
|
|
|
|
|
|
|
1999 Average |
55 |
690 |
37.8 |
2.9 |