Norris (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°56'2", Longitude 81°33'15"
Period of record: 10 sampling dates; March 25, 1998 to December 14, 1999
Surface area (Shafer et al. 1986): No data available.
Lake Region (Griffith et al. 1997): Eastern Flatlands
Geologic formation (Brooks 1981):
The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation.
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 10 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
22 |
38 |
59 |
|
Long-term total nitrogen concentrations (µg/L) |
1220 |
1420 |
1550 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
1.8 |
3.3 |
|
Long-term Secchi depth (ft) |
1.0 |
1.4 |
1.7 |
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-26-99 |
30 |
1470 |
. |
1.7 |
|
Feb-24-99 |
33 |
1530 |
. |
1.3 |
|
Mar-25-99 |
37 |
1420 |
. |
1.2 |
|
Sep-28-99 |
33 |
1520 |
3.3 |
1.6 |
|
Nov-03-99 |
29 |
1290 |
1.0 |
1.5 |
|
Dec-14-99 |
22 |
1460 |
1.0 |
1.3 |
|
|
|
|
|
|
|
1999 Average |
31 |
1450 |
1.8 |
1.4 |