Grayton (Walton County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 30°19'52", Longitude 86°9'47"
Period of record: 6 sampling dates; July 17, 1999 to December 17, 1999
Surface area : No data available.
Lake Region (Griffith et al. 1997): Gulf Coast Lowlands
Geologic formation (Brooks 1981):
The geology is dominated by beach and dune sand with silty sand, silt, and clay of the Biloxi Formation.
Physiographic region (Brooks 1981):
The water body lies in the Coastal Strip division of the Apalachicola Delta District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
7.5 |
Total alkalinity (mg/L as CaCO3) |
45.0 |
|
Conductance (µS/cm @ 25 °C) |
16810 |
Color (Pt-Co units) |
49 |
|
Chloride (mg/L) |
5435.0 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 6 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
7 |
14 |
20 |
|
Long-term total nitrogen concentrations (µg/L) |
250 |
270 |
340 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.0 |
4.1 |
6.3 |
|
Long-term Secchi depth (ft) |
4.7 |
5.1 |
6.0 |
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 |
|
Jul-17-99 |
11 |
260 |
3.3 |
5.3 |
|
Aug-19-99 |
20 |
340 |
6.3 |
4.7 |
|
Sep-15-99 |
19 |
260 |
4.3 |
4.7 |
|
Oct-18-99 |
17 |
270 |
5.7 |
5.0 |
|
Nov-16-99 |
10 |
250 |
3.0 |
6.0 |
|
Dec-17-99 |
7 |
250 |
2.0 |
. |
|
|
|
|
|
|
|
1999 Average |
14 |
270 |
4.1 |
5.1 |