Lake Okeechobee Group 1 Basin/ Southeast District - Verified List (Cycle 1 Revised and Readopted May 2009)

Hydrologic Unit: Lake Okeechobee

May 14, 2009 1 of 6 Florida Department of Environmental Protection

OGC Case 

Number

Planning 

Unit WBID Water Segment Name

Waterbody 

Type

Waterbody 

Class1

1998 303(d) 

Parameters of 

Concern

Parameters 

Assessed Using 

the 2007 Impaired 

Surface Waters 

Rule (IWR)

Concentration 

Causing 

Impairment

Priority for TMDL 

Development2

Comments3

(# Exceedances/# Samples) 

PP = Planning Period

VP = Verified Period

09-2072 CTP Complex 3199A TURKEY SLOUGH STREAM 3F Dissolved Oxygen < 5.0 mg/l Medium

PP = 145 / 148; VP = 91 / 99 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. TN (2.2 mg/L) exceeded the 

threshold of 1.6 mg/L. TP (0.75 mg/L) exceeded the 

threshold of 0.22 mg/L. TN/TP median = 2.8 standard 

deviation of 2.2, range of 1.26 - 12.2, observations 

122. New listing from Cycle 2.

09-2073 CTP Complex 3199B

CHANDLER 

HAMMOCK 

SLOUGH

STREAM 3F Dissolved 

Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP = 39 / 45; VP = 25 / 38 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. TN (3.1 mg/L) exceeded the 

threshold of 1.6 mg/L. TP (1.2 mg/L) exceeded the 

threshold of 0.22. BOD (4.65 mg/L) exceeded the 

threshold of 2.0 mg/L and had 6 observations. TN/TP 

median = 2.3, standard deviation of 2.5, range 1.1 -

12.1, observations 44. A TMDL has already been 

proposed by EPA, 9/30/2006.

09-2074 CTP Complex 3199B

CHANDLER 

HAMMOCK 

SLOUGH

STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 3.10 

mg/L Low

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (60.87 ug/L). TP (1.20 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 2.34, standard deviation of 2.48, range 1.09 

-12.13, observations 44). A TMDL has already been 

proposed by EPA, 9/30/2006.

09-2075 CTP Complex 3205C POPASH SLOUGH STREAM 3F Specific Conductance

Shall not be 

increased above 

1275 umhos/cm

Medium PP=15/41; VP=90/153. New listing from Cycle 2.

09-2076 CTP Complex 3205C POPASH SLOUGH STREAM 3F Dissolved Oxygen < 5.0 mg/l Medium

PP=40/41; VP=116/151 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. TN (1.8 mg/L) exceeded the 

threshold of 1.6 mg/L. TP (0.3 mg/L) exceeded the 

threshold of 0.22mg/L. BOD (2.0 mg/L) did not 

exceed the threshold of 2.0 mg/L and had 22 

observations. TN/TP median = 6.29, standard 

deviation 13.35, range 0.22 - 65.2, observations 34. 

New listing from Cycle 2.

09-2077 CTP Complex 3205C POPASH SLOUGH STREAM 3F Nutrients (Chlorophylla)

Median TN = 1.80 

mg/L Medium

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (28.66 ug/L). TP (0.3 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 6.30, standard deviation 13.36, range 0.22 - 

65.2, observations 34). New listing from Cycle 2.

09-2078 Lake 

Okeechobee

3212A - 

3212I

LAKE 

OKEECHOBEE LAKE 1

Mercury (Based on 

fish consumption 

advisory)

Exceeds DOH 

threshold (>0.3 

mg/kg)

High*

Listed based on 12 large mouth bass tissue samples 

(average Hg = 0.33 mg/kg) from 2005. New listing 

from Cycle 2.
Lake Okeechobee Group 1 Basin/ Southeast District - Verified List (Cycle 1 Revised and Readopted May 2009)

Hydrologic Unit: Lake Okeechobee

May 14, 2009 2 of 6 Florida Department of Environmental Protection

OGC Case 

Number

Planning 

Unit WBID Water Segment Name

Waterbody 

Type

Waterbody 

Class1

1998 303(d) 

Parameters of 

Concern

Parameters 

Assessed Using 

the 2007 Impaired 

Surface Waters 

Rule (IWR)

Concentration 

Causing 

Impairment

Priority for TMDL 

Development2

Comments3

(# Exceedances/# Samples) 

PP = Planning Period

VP = Verified Period

09-2079 NHLMS 

Complex 3203A NUBBIN SLOUGH STREAM 3F Dissolved Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=929/1171; VP=501/648 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. TN (1.8 mg/L) exceeded the 

threshold of 1.6 mg/L. TP (0.35 mg/L) exceed the 

threshold of 0.22 mg/L. BOD (2.0 mg/L) did not 

exceed the threshold of 2.0 mg/L and had 22 

observations. TN/TP median = 4.6, standard 

deviation 3.9, range 1.85 - 38.8, observations 356. A 

TMDL has been proposed by EPA, 9/30/2006.

09-2080 NHLMS 

Complex 3203A NUBBIN SLOUGH STREAM 3F Fecal Coliform Fecal Coliform >400 colonies/100 

mL Medium PP=2/10; VP=7/29 

09-2081 NHLMS 

Complex 3203A NUBBIN SLOUGH STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 1.80 

mg/L Low

The average annual Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (21.68 ug/L). TP (0.35 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 4.62, standard deviation of 3.96, range of 

1.85 - 38.84, observations 356). A TMDL has been 

proposed by EPA, 9/30/2006.

09-2082 NHLMS 

Complex 3203B MOSQUITO CREEK STREAM 3F Dissolved Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=505/657; VP=343/463 Impaired by the IWR 

threshold and nutrients are found to be the causative 

pollutant. TN (2.2 mg/L) exceeded the threshold of 

1.6 mg/L. TP (0.6 mg/L) exceeded the threshold of 

0.22 mg/L. BOD (2.0 mg/L) did not exceed the 

threshold of 2.0 mg/L and had 36 observations. 

TN/TP median = 4.6, standard deviation of 2.3, range 

of 2.01- 20.2, observations 233. A TMDL has already 

been proposed by EPA, 9/30/2006. 

09-2083 NHLMS 

Complex 3203B MOSQUITO CREEK STREAM 3F Fecal Coliform Fecal Coliform >400 colonies/100 

mL Low PP=2/8; VP=19/33. A TMDL has already been 

established by EPA, 4/01/2004. 

09-2084 NHLMS 

Complex 3213A LETTUCE CREEK STREAM 3F Dissolved Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=168/222; VP=118/155 Impaired by the IWR 

threshold and nutrients are found to be the causative 

pollutant. TN (1.9 mg/L) exceeded the threshold of 

1.6 mg/L. TP (0.44 mg/L) exceeded the threshold of 

0.22 mg/L. BOD (2.0 mg/L) did not exceed the 

threshold of 2.0 mg/L and had 22 observations. 

TN/TP median = 4.4, standard deviation 2.64, range 

1.07 - 21.8, observations 181. A TMDL has already 

been re-proposed by EPA, 9/30/2006.

09-2085 NHLMS 

Complex 3213A LETTUCE CREEK STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 1.91 

mg/L Low

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (21.32 ug/L). TP (0.44 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 4.43, standard deviation 2.64, range, 1.07 - 

21.8, observations 181). A TMDL has already been 

re-proposed by EPA, 9/30/2006.
Lake Okeechobee Group 1 Basin/ Southeast District - Verified List (Cycle 1 Revised and Readopted May 2009)

Hydrologic Unit: Lake Okeechobee

May 14, 2009 3 of 6 Florida Department of Environmental Protection

OGC Case 

Number

Planning 

Unit WBID Water Segment Name

Waterbody 

Type

Waterbody 

Class1

1998 303(d) 

Parameters of 

Concern

Parameters 

Assessed Using 

the 2007 Impaired 

Surface Waters 

Rule (IWR)

Concentration 

Causing 

Impairment

Priority for TMDL 

Development2

Comments3

(# Exceedances/# Samples) 

PP = Planning Period

VP = Verified Period

09-2086 NHLMS 

Complex 3213B HENRY CREEK STREAM 3F Dissolved Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=185/236; VP=91/110 Impaired by the IWR 

threshold and nutrients are found to be the causative 

pollutant. TN (1.9 mg/L) exceeded the threshold of 

1.6 mg/L. TP (0.46 mg/L) exceeded the threshold of 

0.22 mg/L. BOD (2.0 mg/L) did not exceed the 

threshold of 2.0 mg/L and had 16 observations. 

TN/TP median = 3.8, standard deviation 3.2, range 

1.03 - 23.1, observations 132. A TMDL has already 

been re-proposed by EPA, 9/30/2006.

09-2087 NHLMS 

Complex 3213B HENRY CREEK STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 1.93 

mg/L Low

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (22.77 ug/L). TP (0.46 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 3.79, standard deviation 3.19, range 1.03 - 

23.14, observations 132). A TMDL has already been 

re-proposed by EPA, 9/30/2006.

09-2088 NHLMS 

Complex 3213C S-135 STREAM 3F Dissolved Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=54/148; VP=46/125 Impaired by the IWR 

threshold and BOD was found to be the causative 

pollutant. BOD (2.1 mg/L) exceeded the threshold 

value of 2.0 mg/L. BOD (2.1 mg/L) exceeded the 

threshold of 2.0 mg/L and had 21 observations. 

TN/TP median = 15.6, standard deviation 16.6, range 

4.8- 166.1, observations 124. A TMDL has already 

been re-proposed by EPA, 9/30/2006.

09-2089 NHLMS 

Complex 3213C S-135 STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 1.50 

mg/L

Median TP = 0.09 

mg/L

Low

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (33.01 ug/L). Data 

indicate that the WBID is colimted by nitrogen and 

phosphorous. TN/TP median = 15.61, standard 

deviation 16.65, range 4.85 - 166.1, observations 

124). Impaired but a TMDL has already been reproposed by EPA, 9/30/2006.

09-2090 NHLMS 

Complex 3213D MYRTLE SLOUGH STREAM 3F Dissolved 

Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP = 180 / 206; VP = 81 / 99 Impaired by the IWR 

threshold and nutrients are found to be the causative 

pollutant. TN (1.9 mg/L) exceeded the threshold of 

1.6 mg/L. TP (0.7 mg/L) exceeded the threshold of 

0.22mg/L. BOD (3.05 mg/L) exceeded the threshold 

of 2.0 mg/L and had 12 observations. TN/TP median 

= 5.5, standard deviation 4.07, range 2.46 - 14.3, 

observations 14. A TMDL has already been reproposed by EPA, 9/30/2006.
Lake Okeechobee Group 1 Basin/ Southeast District - Verified List (Cycle 1 Revised and Readopted May 2009)

Hydrologic Unit: Lake Okeechobee

May 14, 2009 4 of 6 Florida Department of Environmental Protection

OGC Case 

Number

Planning 

Unit WBID Water Segment Name

Waterbody 

Type

Waterbody 

Class1

1998 303(d) 

Parameters of 

Concern

Parameters 

Assessed Using 

the 2007 Impaired 

Surface Waters 

Rule (IWR)

Concentration 

Causing 

Impairment

Priority for TMDL 

Development2

Comments3

(# Exceedances/# Samples) 

PP = Planning Period

VP = Verified Period

09-2091 NHLMS 

Complex 3213D MYRTLE SLOUGH STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 1.96 

mg/L Low

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (59.73 ug/L). TP (0.07 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 5.45, standard deviation 4.07, range 2.46 - 

14.36, observations 14). A TMDL has already been 

re-proposed by EPA, 9/30/2006.

09-2092 NHLMS 

Complex 3219 S-153 STREAM 3F Dissolved Oxygen < 5.0 mg/l Medium

PP = 10 / 10; VP = 21 / 29 Impaired by the IWR 

threshold and nutrients are found to be the causative 

pollutant. TN (2.13 mg/L) exceeded the threshold of 

1.6 mg/L. TP (0.3 mg/L) exceeded the threshold of 

0.22mg/L. BOD (3.3 mg/L) exceeded the threshold of 

2.0 mg/L and had 19 observations. TN/TP median = 

7.84, standard deviation of 3.5, range, 2.16 - 16.3, 

observations 27. New listing from Cycle 2.

09-2093 NHLMS 

Complex 3219 S-153 STREAM 3F Nutrients (Chlorophylla)

Median TN = 2.13 

mg/L Medium

The annual average Chla value exceeded the IWR 

threshold of 20 ug/L in 2006 (67.31 ug/L). TP (0.03 

mg/L) exceeded the threshold of 0.22 mg/L. Data 

indicate that the WBID is nitrogen limited (TN/TP 

median = 7.84, standard deviation of 3.49, range, 

2.16 - 16.28, observations 27). New listing from 

Cycle 2.

09-2094 TOL Complex 3203C L63 CANAL STREAM 3F Specific Conductance

Shall not be 

increased above 

1275 umhos/cm

Medium PP=3/214; VP=18/117. New listing from Cycle 2.

09-2095 TOL Complex 3203C L63 CANAL STREAM 3F Dissolved Oxygen < 5.0 mg/l Medium

PP=11/13; VP=32/51 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. The annual average chla value 

exceeded the threshold in 2006 (23.9 ug/L). BOD (2.0 

mg/L) did not exceed the threshold of 2.0 mg/L and 

had 35 observations. TN/TP median = 68.8, standard 

deviation of 66.9, range 2.4 - 225.7, observations 

122. New listing from Cycle 2.
Lake Okeechobee Group 1 Basin/ Southeast District - Verified List (Cycle 1 Revised and Readopted May 2009)

Hydrologic Unit: Lake Okeechobee

May 14, 2009 5 of 6 Florida Department of Environmental Protection

OGC Case 

Number

Planning 

Unit WBID Water Segment Name

Waterbody 

Type

Waterbody 

Class1

1998 303(d) 

Parameters of 

Concern

Parameters 

Assessed Using 

the 2007 Impaired 

Surface Waters 

Rule (IWR)

Concentration 

Causing 

Impairment

Priority for TMDL 

Development2

Comments3

(# Exceedances/# Samples) 

PP = Planning Period

VP = Verified Period

09-2096 TOL Complex 3203C L63 CANAL STREAM 3F Nutrients (Chlorophylla)

Median TP = 0.01 

mg/L Medium

The annual average Chla value exceeded the 

threshold of 20.0 ug/L in 2006 (23.92 ug/L). TN (0.67 

mg/L) did not exceed the threshold of 1.6 mg/L. Data 

indicate that the WBID is phosphorous limited. TN/TP 

median = 68.75, standard deviation of 66.96, range 

2.42 - 225.7, observations 122. New listing from 

Cycle 2. Nutrient concentrations are very low. 

Therefore, elevated chlorophyll may be due to 

standing water behind the flow-way to the lake.

09-2097 TOL Complex 3205 TAYLOR CREEK STREAM 3F Dissolved 

Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=370/578; VP=402/686 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. TN (1.8 mg/L) exceeded the 

threshold of 1.6 mg/L. TP (0.37 mg/L) exceeded the 

threshold of 0.22 mg/L. BOD (3.6 mg/L) exceeded the 

threshold of 2.0 mg/L and had 34 observations. 

TN/TP median = 4.6, standard deviation of 3.4, range 

1.8 - 36.2, observations 514. A TMDL has already 

been proposed by EPA, 9/30/2006.

09-2098 TOL Complex 3205 TAYLOR CREEK STREAM 3F Fecal Coliform >400 colonies/100 

mL Low PP=5/16; VP=24/48. New listing from Cycle 2.

09-2099 TOL Complex 3205 TAYLOR CREEK STREAM 3F Nutrients Nutrients (Chlorophylla)

Median TN = 1.84 

mg/L Low

The annual average Chla value exceeded the IWR 

threshold value of 20 ug/L in 2006 (34.66 ug/L). TP 

(0.37 mg/L) exceeded the threshold of 0.22 mg/L. 

Data indicate that the WBID is nitrogen limited (TN/TP 

median = 4.67, standard deviation of 3.40, range 1.81 

- 36.25, observations 514). A TMDL has already 

been proposed by EPA, 9/30/2006.

09-2100 TOL Complex 3205D OTTER CREEK STREAM 3F Dissolved 

Oxygen Dissolved Oxygen < 5.0 mg/l Low

PP=457/574; VP=402/503 Impaired by the IWR 

threshold and nutrients were found to be the 

causative pollutant. TN (1.9 mg/L) exceeded the 

threshold of 1.6 mg/L. TP (0.54mg/L) exceeded the 

threshold of 0.22. BOD (2.0 mg/L) exceeded the 

threshold of 2.0 mg/L and had 51 observations. 

TN/TP median = 4.1, standard deviation of 8.02, 

range of 0.66 - 138.7, observations 412. A TMDL 

has been proposed by EPA, 9/30/2006.

09-2010 TOL Complex 3205D OTTER CREEK STREAM 3F Fecal Coliform >400 colonies/100 

mL Low PP=No data; VP=11/27. New listing from Cycle 2.

1

 Florida's waterbody classifications are defined as: 1 - Potable water supplies, 2 - Shellfish propagation or harvesting, 3F - Recreation, propagation, and maintenance of a healthy, well-balanced in fresh water, 

3M - Recreation, propagation, and maintenance of a healthy, well-balanced population of fish and wildlife in marine water, 4 - Agricultural water supplies, population of fish and wildlife, 5 - Navigation, utility, and industrial use.

 Where a parameter was only identified as impaired under the IWR, a priority of “medium” was assigned. Exceptions are waters where the impairment poses a threat to potable water or 

 human health, which have been assigned a “high” priority, and fecal coliform impairments, which have been assigned a “low” priority. All other listings as of this cycle are prioritized based

 on the following: it is the Department's intent that listings with a "High" priority be addressed within the next 5 years, listings with a "Medium" priority be addressed within 5-10 years as resources allow,

*A statewide TMDL for mercury, that will address this waterbody, is scheduled to be completed in 2012.

2

 Where a parameter was 1998 303(d) listed, the priority for TMDL development is the year provided and is assigned based on the consent decree schedule.
Lake Okeechobee Group 1 Basin/ Southeast District - Verified List (Cycle 1 Revised and Readopted May 2009)

Hydrologic Unit: Lake Okeechobee

May 14, 2009 6 of 6 Florida Department of Environmental Protection

OGC Case 

Number

Planning 

Unit WBID Water Segment Name

Waterbody 

Type

Waterbody 

Class1

1998 303(d) 

Parameters of 

Concern

Parameters 

Assessed Using 

the 2007 Impaired 

Surface Waters 

Rule (IWR)

Concentration 

Causing 

Impairment

Priority for TMDL 

Development2

Comments3

(# Exceedances/# Samples) 

PP = Planning Period

VP = Verified Period

 and listings with a "Low" priority be addressed within the next 10 years.

3 PP - Planning Period (January 1, 1994 through December 31, 2003); VP - Verified Period (January 1, 1999 through June 30, 2006)

The Verified list was created using Run 31 of the IWR Analysis.