North Blue (Polk)

Location: Latitude 27°51'20", Longitude 81°34'52"

Period of record: 94 sampling dates; February 13, 1991 to November 30, 1998

Surface area : No data available.

Lake Region (Griffith et al. 1997): Northern Lake Wales Ridge

Geologic formation (Brooks 1981):

The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene.

Physiographic region (Brooks 1981):

The lake lies in the Iron Mountains subdivision of the Lake Wales Ridge division of the Central Lake District.

Other LAKEWATCH data available: Supplemental water chemistry

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 94 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
1
4
9
Long-term total nitrogen concentrations (µg/L)
2360
4020
6010
Long-term total chlorophyll concentrations (µg/L)
0.3
1.7
5.0
Long-term Secchi depth (ft)
9.7
24.0
38.5

1998 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, µg/L),
total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1998:

Date
TP (µg/L)
TN (µg/L)
CHL (µg/L)
SECCHI (ft)
Jan-07-98
5
3510
1.0
25.0
Feb-09-98
4
3530
4.0
18.3
Mar-04-98
6
3590
2.0
19.3
Apr-02-98
8
3860
2.7
14.7
May-02-98
7
3570
3.0
12.7
Jun-03-98
7
3940
3.7
9.7
Jul-02-98
5
3600
3.7
14.2
Aug-02-98
6
3570
1.7
17.3
Sep-01-98
7
2890
4.0
15.7
Oct-08-98
5
2990
3.0
15.7
Nov-10-98
6
2360
2.0
13.0
Nov-30-98
6
2580
2.0
18.0
         
1998 Average
6
3330
2.7
16.1