Grand Lagoon (Bay County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 30°8'35", Longitude 85°44'16"
Period of record: 7 sampling dates; December 21, 1997 to December 12, 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 Delta Plain and the Coastal Strip divisions of the Apalachicola Delta District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 7 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
47 |
60 |
77 |
|
Long-term total nitrogen concentrations (µg/L) |
510 |
690 |
960 |
|
Long-term total chlorophyll concentrations (µg/L) |
12.0 |
26.9 |
62.0 |
|
Long-term Secchi depth (ft) |
1.5 |
2.4 |
3.3 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 2 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 |
|
Jun-13-99 |
55 |
670 |
12.0 |
2.8 |
|
Sep-12-99 |
60 |
680 |
16.5 |
2.2 |
|
Dec-12-99 |
52 |
590 |
34.0 |
2.0 |
|
|
|
|
|
|
|
1999 Average |
56 |
640 |
20.8 |
2.3 |