Cochran (Seminole County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°44'23", Longitude 81°8'21"
Period of record: 3 sampling dates; September 10, 1999 to December 26, 1999
Surface area : No data available.
Lake Region (Griffith et al. 1997): Crescent City/DeLand Ridges
Geologic formation (Brooks 1981):
The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the St. John’s Offset division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 3 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
8 |
12 |
17 |
|
Long-term total nitrogen concentrations (µg/L) |
990 |
1070 |
1180 |
|
Long-term total chlorophyll concentrations (µg/L) |
5.3 |
18.1 |
43.7 |
|
Long-term Secchi depth (ft) |
1.0 |
1.7 |
2.2 |
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 |
|
Sep-10-99 |
8 |
1180 |
43.7 |
1.0 |
|
Nov-06-99 |
11 |
990 |
5.3 |
1.8 |
|
Dec-26-99 |
17 |
1030 |
5.3 |
2.2 |
|
|
|
|
|
|
|
1999 Average |
12 |
1070 |
18.1 |
1.7 |